Krell Industries KCT User's Manual
Contents
1. 15 or key 41 to exit the menu mode INPUT TRIGGER SETUP This option allows you to configure which zone is activated by the 12 VDC 12 Volt trigger input 1 2 3 Press the menu button 15 or key 41 to access the main menu Use the level control knob 14 or level keys 44 to select INPUT TRIGGER SETUP Press the enter button 16 or key 42 The front panel display 13 shows TURN ON BOTH the default Use the level control knob 14 or level keys 44 to select the preferred input trigger setup option TURN ON BOTH INACTIVE TURN ON ZONE 1 TURN ON ZONE 2 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode Krell Current Tunnel 31 SETUP MEMORY This option allows you to save or recall new settings or reset all settings to the factory defaults Remember to exit the setup memory without altering the settings select exit and press the enter button 16 or key 42 You return to the main menu 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select SETUP MEMORY 3 Press the enter button 16 or key 42 The front panel display 13 shows SAVE ALL SETTINGS the default 4 Use the level control knob 14 or level keys 44 to select the preferred setup memory SAVE ALL SETTINGS RECALL ALL SETTINGS FACTORY SETTINGS 5 Press the enter but2. KRELL KCT appears in the front panel display 13 indicating that the preamplifier is initializing After initializing is complete the KCT is in the stand by mode The red stand by LED 2 illuminates 18 Krell Current Tunnel Krell Link Connections and Operation Krell Link in out connectors on the KCT back panel allow you to synchronize remote control operation for systems that include multiple amplifiers and associated components When the Krell Link in out connectors are used the remote capabilities of the linked components are controlled from one amplifier or preamplifier called the control component The linked components respond to stand by and operational mode commands from the control component via MIDI cables See Krell Link on page 32 for menu options to customize Krell Link operation Note Krell Link uses standard five pin MIDI communication cables sometimes called MIDI Plus cables MIDI cables can be purchased from your authorized distributor or dealer or from an audio supply store Connecting Components through Krell Link 1 Turn all components off This ensures all components are synchronized when the MIDI cable is connected 2 Select the component to be the control component The control component must be in plain view for proper remote control operation 3 Connect one end of the MIDI cable to the Krell Link out connector 26 on the control component back panel 4 Connect the other end of a MIDI cable
3. 2 Carefully remove the unit and accessories from the box Remove the foam end caps and protective plastic wrap from the unit Notes If any of these items are not included please contact your authorized Krell dealer distributor or Krell immediately for assistance Save all packing materials If you must ship your preamplifier in the future repack the unit in its original packaging to prevent transit damage See Return Authorization Procedure on page 36 Placement Before you install the KCT preamplifier into your system review the following guidelines to select the location for your component This will facilitate a clean trouble free installation The KCT does not require a special rack or cabinet for installation See Specifications on page 37 for the dimensions of the KCT The KCT requires at least two inches 5 cm of clearance on each side and at least two inches 5 cm of clearance above the component to provide adequate ventilation Installations inside cabinetry may need extra ventilation AC POWER GUIDELINES The KCT has superb regulation and does not require a dedicated AC circuit Avoid connections through extension cords or multiple AC adapters High quality 15 amp grounded AC strips are acceptable High quality AC line conditioners or filters can be used if they are grounded and meet or exceed the unit s power supply rating of 100 VA Krell Current Tunnel 5 Quick Start To access the full array of availab
4. has a limited warranty of five years for parts and labor on circuitry Should this product fail to perform at any time during the warranty Krell will repair it at no cost to the owner except as set forth in this warranty The warranty does not apply to damage caused by acts of God or nature The warranty on this page shall be in lieu of any other warranty expressed or implied includ ing but not limited to any implied warranty of merchantability or fitness for a particular purpose There are no warranties which exceed beyond those described in this document If this product does not perform as warranted herein the owner s sole remedy shall be repair In no event will Krell be liable for incidental or consequential damages arising from purchase use or inability to use this product even if Krell has been advised of the possibility of such damages Proof of purchase in the form of a bill of sale or receipted invoice substantiating that the unit is within the warranty period must be presented to obtain warranty service The warranty begins on the date of the original retail purchase as noted on the bill of sale or receipted invoice from an authorized Krell dealer or distributor Previously owned equipment when repurchased from an authorized Krell dealer or distributor has the balance of the original warranty based on the original date of manufacture The warranty for Krell products is valid only in the country to which they were originally
5. knob 14 on the front panel to balance output levels The front panel display 13 shows balance status for three seconds 44 Level Keys Use these keys to increase or decrease system volume level or with the balance key 43 to adjust balance The level keys are also used to select menu options to customize the KCT See Customizing the KCT Preamplifier on page 26 16 Krell Current Tunnel Compact Disc Functions The compact disc keys on the KCT remote control are functional with all Krell compact disc players 45 Pause Key Use this key to temporarily suspend playing the current compact disc track To resume playing the track at the point pause was engaged press pause again or press the play key 47 46 Stop Key Use this key to end compact disc playback 47 Play Key Use this key to begin compact disc playback 48 Track Forward and Back Keys Use these keys to select and begin playing the track that follows or precedes the current track 49 Search Forward and Back Keys Press and hold these keys to scroll forward or backward through the current track Note For information on track programming functions refer to the owner s reference manual for your Krell compact disc player Krell Current Tunnel 17 Connecting the KCT Preamplifier to Your System See Figure 2 on page 11 INPUT AND OUTPUT CONNECTIONS Krell recommends using its proprietary Krell CAST system for unparalleled sonic performance between the KC
6. rS eS Ss LLL nor THE LEADER IN AUDIO ENGINEERING Krell Current Tunnel CAST Preamplifier Instructions for Use Owner s Reference KCT Krell Industries Inc 45 Connair Road Krell Current Tunnel Orange CT 06477 3650 USA CAST Preamplifier v 01 0 TEL 203 799 9954 FAX 203 891 2028 E MAIL krell krellonline com WEBSITE http www krellonline com C This product complies with the EMC directive 89 336 EEC and the low voltage directive 73 23 EEC WARNINGS The preamplifier must be placed on a firm level surface where it is not exposed to dripping or splashing The ventilation grids on the top of the preamplifier and the space underneath the preamplifier must be unobstructed at all times during operation Do not place flammable material above or beneath the preampli fier Before making connections to the preamplifier ensure that the power is off and other components are in mute or stand by mode Make sure all cable terminations are of the highest quality free from frayed ends short cir cuits or cold solder joints Do not connect an RS 232 cable to the phono power port Output from the phono power port could seriously damage your computer Do not connect the cable from a Krell KPE phono stage to the RS 232 port THERE ARE NO USER SERVICEABLE PARTS INSIDE THE PREAMPLIFIER Please contact your authorized Krell dealer distributor or Krell if you have any questions not addressed in this manual This product is ma
7. sonic presentation of the entire system CAST A New Approach CAST circuitry recognizes signal transmitted in the current domain instead of the voltage domain between each component CAST transmission unifies individual components and their interconnects into an electrically linked whole The sonic presentation of the entire system remains intact CAST Basics Here s how a CAST audio system works Internally each CAST source transfers or amplifies current using Krell Current Mode circuitry This current signal is then output using CAST circuitry When the signal is received by a CAST input Krell Current Mode circuitry again takes over until the signal reaches the loudspeaker By maintaining the musical signal in the current domain from beginning to end an entire CAST system behaves as if it is one component With CAST anomalies of signal transmission between components are eliminated Cable impedances and their effects on the transmitted signal are non existent How CAST and Krell Current Mode Interact While CAST is a new method of transferring the musical signal between components its origin stems from Krell Current Mode the technology developed to transfer the musical signal within a component CAST combined with Krell Current Mode takes circuitry signal transmission to the next evolutionary level In essence Krell Current Mode maintains the integrity of the signal within the component and CAST preserves the transmitted signal betwee
8. tape source When TAPE is activated the front panel display 13 shows the zone that is the pathway for the tape output See Tape Output Menu on page 30 8 Mute Button Use this button to mute the preamplifier output To unmute press the mute button again To customize mute button operation see Mute Menu on page 29 Krell Current Tunnel 9 9 Phase Button Use this key to invert the absolute polarity of the variable output 180 degrees for the selected input The front panel display 13 shows INVERT for the negative phase the display remains blank for the positive phase 10 Zone Button Use this button to select the main zone the main listening or viewing area or zone 2 another listening area 11 Main Zone LED The red main zone LED illuminates when the main zone is activated Zone status is also shown in the front panel display 13 12 Zone 2 LED The green zone 2 LED illuminates when zone 2 is activated Zone status is also shown in the front panel display 13 Display 13 Front Panel Display The front panel display provides preamplifier status messages including input and zone selection tape output status volume and balance level and menu selections Level Control 14 Level Control Knob Use this knob to increase or decrease system volume level or with the balance key to adjust balance The level control knob is also used to select menu options to customize the KCT See Customizing the KCT Preamplifier on pag
9. the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select THEATER MODE 3 Press the enter button 16 or key 42 The front panel display 13 shows THEATER MODE and S 1 4 Use the level control knob 14 or level keys 44 to select the input to be placed in Theater Throughput mode 5 Press the enter button 16 or key 42 The front panel display 13 shows OFF the default 6 Use the level control knob 14 or level keys 44 to select whether Theater Throughput mode is off or on 7 To select or disengage Theater Throughput for another input press the enter button 16 or key 42 to return to the theater mode menu 28 Krell Current Tunnel 8 Repeat steps 4 through 6 9 Press the menu button 15 or key 41 to exit the menu mode BRIGHTNESS This option allows you to adjust the front panel display brightness 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select BRIGHTNESS 3 Press the enter button 16 or key 42 The front panel display 13 shows HIGH the default 4 Use the level control knob 14 or level keys 44 to select the desired brightness option HIGH FULL BRIGHTNESS OFF LOW AND MEDIUM The front panel display 13 illustrates each level of brightness 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button
10. to the Krell Link in connector 26 on the back panel of the next component 5 To link another component connect another MIDI cable to the Krell Link out connector on the back panel of the second component Connect the remaining end of the MIDI cable to the Krell Link in connector on the back panel of a third component 6 Link additional components if desired The components are now ready for operation with Krell Link Krell Link Operation 1 When all components are connected as described above place each component in the stand by mode This ensures all components are synchronized when signals from the control component are sent to linked components 2 Switch the control component to the operational mode from the component s front panel power button or through the power key on the remote control The linked components simultaneously switch to the operational mode An individual linked component can be switched between the stand by and the operational modes from its front panel Switching a linked component temporarily breaks the chain of linked components To re establish linked operation return all components to the stand by mode Krell Current Tunnel 19 Tape Input and Output The KCT preamplifier has a discrete tape input and output The tape output is used to channel a signal from a C 1 C 2 B 1 B 2 S 1 S 2 or S 3 input to a recording device or processor You can use the tape feature in two ways 1 Use the t
11. volume control so you can play music from one input device at the desired volume through the main zone and play a second device through zone 2 at a different volume You can also play an input device through one zone and record through the other zone again at separate volume levels See Main Zone and Zone 2 Operation on page 22 Remember that you ll need one amplifier to drive your loudspeakers in the main zone and a second amplifier for the loudspeakers in zone 2 Q When select the B 1 input on the KCT one channel seems to have less gain than the other does Is something wrong A First check the balance level using the balance and level keys See Remote Control Description on page 15 If balance level is correct check that the balanced input or output internal cable terminations are properly connected Locate the channel that appears to have less gain Switch that channel s input cables If the problem now appears in the other channel the cable is defective If the problem remains in the original channel check the output cables using the same procedure If the balance settings or cables are not causing the difference in gain contact your authorized Krell dealer distributor or Krell 34 Krell Current Tunnel Warranty To register your product for warranty benefits please complete and return the Warranty Registration Card enclosed in the shipping box within 15 days of purchase Thank you This Krell product
12. 1 to exit the menu mode To adjust the fixed offset for zone 2 1 Press the menu button 15 or key 41 to select the main menu 2 Use the level control knob 14 or level keys 44 to select Z2 BALANCE 3 Repeat steps 4 and 5 above INPUT NAME MENU This option allows you to assign names to all inputs for easy identification 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select INPUT NAME MENU 3 Press the enter button 16 or key 42 The front panel display 13 shows INPUT NAMES and S 1 the default 26 Krell Current Tunnel Use the level control knob 14 or level keys 44 to select the desired input from the list S 1 B 1 C 1 tape etc 5 Press the enter button 16 or key 42 to access the submenu Use the level control knob 14 or level keys 44 to scroll through the list of naming options phono aux etc The front panel display 13 will show the new input name when you exit the menu TOname another input press the enter button 16 or key 42 to return to the input name menu 8 Repeat steps 4 through 6 Press the menu button 15 or key 41 to exit the menu mode INPUT LEVEL TRIM This option allows you to add a fixed positive or negative volume offset to compensate for input devices with significantly different output levels After adjusting input level trim you can switch between these input
13. 1 L N Front Panel Description See Figure 1 on page 8 The KCT preamplifier front panel provides power on input and zone selection level control menu functions and status display Front panel features and their descriptions follow Power 1 Power Button Use this button to switch the KCT between the stand by and the operational modes 2 Stand by LED The red stand by LED illuminates when the KCT is plugged into a standard AC wall receptacle indicating that the KCT is ready to be switched to the operational mode 3 Power LED The blue power LED illuminates when the KCT is in the operational mode and flashes when remote control signals are received Remote Control Functions 4 Infrared Sensor The infrared sensor receives commands from the KCT remote control For proper remote control operation make sure the infrared sensor is not covered or obstructed 5 Infrared Transmitter LED The infrared transmitter LED flashes when the KCT sends infrared signals to another remote control See Program Remote Menu on page 31 Preamplifier Functions 6 Input Select Buttons Use these buttons to select the corresponding rear panel input that is connected to a CAST C 1 C 2 balanced B 1 B 2 or single ended S 1 S 2 S 3 analog source The front panel display 13 shows the active zone the selected input and volume level 7 Tape Button Use this button to select the corresponding rear panel input that is connected to a analog
14. 15 or key 41 to exit the menu mode Note If you choose oFF the front panel display will remain on until you exit the menu mode Press menu again to display the main menu MUTE MENU This option allows you to customize mute button or mute key to operate in either the main zone or zone 2 only in the zone that is currently active or in both zones 1 Press the menu button 15 or key 41 2 Use the level control knob 14 or level keys 44 to select MUTE MENU 3 Press the enter button 16 or key 42 The front panel display 13 shows MUTE ACTIVE ZONE the default 4 Use the level control knob 14 or level keys 44 to highlight the mute options MUTE ZONE 1 MUTE ZONE 2 MUTE BOTH ZONES MUTE ACTIVE ZONE 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode OUTPUT TRIGGER SETUP This option allows you to configure the activation of three 12 VDC 12 Volt trigger outputs to be always off or on or to activate only with selected zones 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select OUTPUT TRIGGER SETUP 3 Press the enter button 16 or key 42 The front panel display 13 shows TRIGGER 1 Krell Current Tunnel 29 4 Use the level control knob 14 or level keys 44 to select the desired trigger 1 2 or 3 5 Press the enter button 16 or k
15. 8c 9c 0c 6L 8l LL jaued 422g LOM PUL Z enBi4 Back Panel Description See Figure 2 on page 11 The KCT preamplifier back panel provides all input and output connections remote control inputs and outputs and power connection Back panel features and their descriptions follow Inputs 17 B 1 and B 2 Left and Right Balanced Inputs The KCT is equipped with two pairs of balanced analog source inputs with XLR connectors 18 S 1 S 2 and S 3 Left and Right Single ended Inputs The KCT is equipped with three pairs of single ended analog source inputs with RCA connectors 19 Tape Left and Right Inputs The KCT is equipped with one pair of single ended tape source inputs with RCA connectors 20 C 1 and C 2 Left and Right CAST Inputs The KCT is equipped with two pairs of CAST inputs with 4 pin bayonet connectors for use with Krell CAST equipped input devices Tape Output 21 Tape Left and Right Outputs The KCT is equipped with one pair of tape outputs with RCA connectors Main Zone Outputs The following outputs are for the main zone 22 Preamp Left and Right Outputs The KCT is equipped with two pairs of preamplifier outputs one pair of balanced outputs with XLR connectors and one pair of single ended outputs with RCA connectors 23 CAST Preamp Outputs The KCT is equipped with two pairs of CAST preamplifier outputs with 4 pin bayonet connectors for use with Krell CAST equipped amplifiers Zone 2 Outputs The fol
16. INSTALLATION AND REMOVAL The KCT remote control uses two AAA size 1 5 Volt batteries Batteries are included with the shipment To install the batteries 1 Remove the remote control backplate using the supplied T 10 Torx wrench 2 Install the batteries following the battery position diagram on the plastic battery receptacle 3 Replace and secure the backplate Replace batteries when remote control function becomes intermittent Remove batteries if the remote control is not used for a long period of time Battery leakage can damage the remote control The remote control provides power on input and zone selections level and balance control menu and compact disc functions Remote control keys and their descriptions follow Power 32 Power Key Use this key to switch the KCT between the stand by and the operational modes Amplifier Functions 33 Amp Pwr Key Use this key to activate Krell amplifiers connected to your system The amp pwr key also activates the control component for amplifiers connected by Krell Link 34 Amp Sel ect Key Use this key to switch between CAST and balanced inputs on a Krell Full Power Balanced amplifier connected to your system The red center LED illuminates when the CAST output is active Preamplifier Functions 35 Mute Key Use this key to mute the preamplifier output To unmute press the mute key again To customize mute key operation see Mute Menu on page 29 36 Phase Key Use this ke
17. T and other CAST equipped components The KCT also offers conventional balanced operation The circuitry and connections associated with balanced operation not only can minimize sonic loss but also are immune to induced noise especially for installations using long cables The XLR pin configuration is described below Pin 1 Ground Pin 2 Non inverting 0 Pin 3 Inverting 180 Inputs and outputs are located on the KCT back panel Maintain the correct left right orientation IMPORTANT Connecting non CAST components to CAST inputs or outputs can damage your equipment and void your warranty Do not attempt to alter CAST cable ends or CAST inputs or outputs It is electrically impossible to convert CAST input output chassis mount connectors for balanced or single ended operation Follow these steps to connect the KCT preamplifier to your system 1 Neatly arrange and organize the wiring to and from the KCT and all components Separate AC wires from audio cables to prevent hum or other unwanted noise from being introduced into the system 2 Connect the outputs of your source equipment to the appropriate CAST 20 balanced 17 single ended 18 or tape 19 inputs on the KCT back panel 3 Connect the appropriate main 22 or 23 and zone 2 24 or 25 outputs on the KCT back panel to your amplifier s 4 Connect the KCT to AC power Connect the AC power cord to the IEC power connector 31 then plug the AC power cord into the wall
18. ape input to compare the output signal of a three head analog tape recorder to the output signal of an audio source when making a recording To activate this function select an audio source for recording using either the C 1 C 2 B 1 B 2 S 1 S 2 or S 3 input select buttons 6 or keys 39 Press the tape button 7 or tape key 40 to switch between the tape recorder output and the input source 2 Use the tape output to create a processor loop when the KCT is connected to a graphic equalizer or other ancillary equipment To activate this function connect the equipment to the KCT tape outputs 21 as described in the equipment manu facturer s manual Press the tape button 7 or tape key 40 to switch between the processor output and the input source For both tape features the KCT front panel display 13 shows TAPEOUT ZONE 1 or TAPEOUT ZONE 2 indicating the zone that is the pathway for the tape output The display changes to TAPE MONITOR after three seconds You can also configure the tape output to record music from an input device through zone 2 while you listen to music from another input device through the main zone You can also record through the main zone and listen through zone 2 To select a zone for tape output see Tape Output Menu on page 30 20 Krell Current Tunnel Operating the KCT Preamplifier The KCT preamplifier is easy to install and operate Instructions follow for on off and stand by operation and z
19. ary Krell circuit topology in which the audio gain stages of a component operate in the current rather than voltage domain This unique technology provides the component with exceptional speed and a wide bandwidth Krell Sustained Plateau Bias Il A proprietary Krell digital circuit that continually monitors the input signal and speaker impedance and adjusts the bias accordingly to ensure Class A operation Sustained Plateau Bias II provides the enormous sonic benefits of continuous Class A operation while minimizing the heat generation and power consumption normally associated with Class A designs 2 Krell Current Tunnel Revolutionary Krell CAST Technology Current Audio Signal Transmission termed CAST is a revolutionary method of connecting analog audio components for unparalleled sonic performance Innovative engineering combines the new Krell CAST circuitry with existing Krell Current Mode technology to create entire CAST systems that reproduce music with incredible range tonality and precision Voltage Signal Transmission and the Traditional Audio System Traditionally signal is transmitted in the voltage domain between two components In an audio system each component is a discrete entity with unique characteristics that act upon the musical signal independently Each component is unaware of the other components in the system The cables that connect the components also have their own electrical characteristics which affect the
20. balanced connections have 6 dB more gain than single ended connections and allow the use of long interconnect cables Balanced connections are completely immune to induced noise from the system or the environment Krell Current Audio Signal Transmission CAST A proprietary Krell circuit technology for connecting analog components in which the audio waveform is transmitted between components in the current rather than voltage domain The speed and bandwidth provided by Krell CAST yields accurate realistic music reproduction Krell components connected via CAST perform as if they are all part of a single circuit Single ended A two wire input or output circuit Use care when using single ended connections as the ground connection is made last and broken first Turn the system off prior to making or breaking single ended connections Single ended connections are not recommended for connections requiring long cable runs OPERATION Off When the power button on the front panel is pressed and the blue power LED turns off the component is off Operational Mode When the power button on the front panel is pressed and the blue power LED illuminates the component is in the operational mode and ready to play music Stand by Mode A low power consumption status that keeps the audio and regulator circuits at idle Krell recommends leaving the component in the stand by mode when it is not playing music TECHNOLOGY Krell Current Mode A propriet
21. cord through zone 2 Begin playing the device 11 Press the tape button 7 or key 40 The front panel display shows TAPEOUT ZONE2 The input will begin recording through zone 2 The front panel display shows TAPE MONITOR after three seconds While you are recording through zone 2 you can also press the zone button 10 or main zone key 37 to check playback through the main zone without interrupting the recording through zone 2 Krell Current Tunnel 23 To stop recording 1 Press the zone button 10 or Z2 key 38 to select zone 2 2 Press the tape button 7 or key 40 24 Krell Current Tunnel Troubleshooting System Noise When you mix and match high performance audio components each with its own ground potential a low frequency hum may occur in one or both loudspeakers If this happens when you place the KCT preamplifier into your system follow these simple troubleshooting steps 1 Check that all input and output connections are of sound construction 2 With the preamplifier off remove the interconnect cables then turn the preamplifier on If the hum disappears turn the preamplifier off and reinsert one of the interconnect cables Turn the amplifier back on Repeat this process for each cable 3 If the hum reappears with one or both interconnect cables reinserted the cable needs to be replaced 4 If the interconnect cables are sound you may be experiencing a ground loop Please contact your autho
22. dB Zone 2 THD Noise lt 0 005 20 Hz 20 kHz Balanced or Single ended lt 0 004 20 Hz 20 kHz CAST Residual Noise lt 95 dB wideband unweighted lt 109 dB A weighted AC Mains Requirements 100 120 200 220 or 240 V AC 50 or 60 Hz 60 W Dimensions 19w x 4 5h x 14 5d in 48w x 11 5h x 36 5d cm Weight Shipping 23 Ib 10 5 kg Unit Only 19 Ib 8 6 kg 38 Krell Current Tunnel Krell Industries Inc KCT 45 Connair Road Orange CT 06477 3650 USA Krell Current Tunnel CAST Preamplifier TEL 203 799 9954 FAX 203 891 2028 E MAIL krell krellonline com v 01 0 WEBSITE http www krellonline com
23. devices without major changes in volume 1 2 3 Press the menu button 15 or key 41 to access the main menu Use the level control knob 14 or level keys 44 to select INPUT LEVEL TRIM Press the enter button 16 or key 42 The front panel display 13 shows INPUT LEVEL TRIMS and S1 the default Use the level control knob 14 or level keys 44 to select the desired input from the list S 1 B 1 tape etc Press the enter button 16 or key 42 The front panel display 13 shows the existing volume Use the level control knob 14 or level keys 44 to scroll through the available volume settings from 6 to 6 dB in 5 dB increments To adjust level trim for another input press the enter button 16 or key 42 to return to the input level trim menu Repeat steps 4 through 6 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode INPUT BALANCE TRIM This option allows you to add different left and right balance offsets for different inputs 1 2 Press the menu button 15 or key 41 to access the main menu Use the level control knob 14 or level keys 44 to select INPUT BALANCE TRIM Krell Current Tunnel 27 3 Press the enter button 16 or key 42 The front panel display 13 shows INPUT BALANCE TRIM and S 1 the default 4 Use the level control knob 14 or level keys 44 to select t
24. e property of Krell No expressed or implied warranty is made for any Krell product damaged by accident abuse misuse natural or personal disaster or unauthorized modification Any unauthorized voltage conversion disassembly component replacement perfora tion of chassis updates or modifications performed to the unit will void the warranty The operating voltage of this unit is determined by the factory and can only be changed by an authorized Krell distributor or at the factory The voltage for this product in the U S A cannot be changed until six months from the original purchase date In the event that Krell receives a product for warranty service that has been modified in any way without Krell authorization all warranties on that product will be void The product will be returned to original factory layout specifications at the owner s expense before it is repaired All repairs required after the product has been returned to original factory specifications will be charged to the customer at current parts and labor rates All operational features functions and specifications and policies are subject to change without notification Krell Current Tunnel 35 Return Authorization Procedure HOW TO EXPEDITE SERVICE HOW TO RETURN A PRODUCT If you believe there is a problem with your component please con tact your dealer distributor or the Krell factory to discuss the problem before you return the component
25. e 26 Menu Functions 15 Menu Button Use the menu button to access menu options for customizing the KCT The front panel display shows MAIN MENU and submenu name See Customizing the KCT Preamplifier on page 26 16 Enter Button Use this key to access submenu selections 10 Krell Current Tunnel 1012euuo JOMOd 23l LE J9MOd Jewog ououg OF J012euuo ef ejs ououd c c SH 6c Ul S Ou 8c INC pue ul OGA ZL Zg INO pue ul Ur 9 4 9c sinding pue s ndu Jonuo5 louu ti Jaued yg sindino 1u6tH pue ye pepue ejButs sz sindino 1uBiti pue ye peouejeg vc sinding z euoz sindino dweeld 1SVO Z sindino 1uBit pue yo dureejg ze sinding uoz ulen indino ede Iz indino ede sindu 1SVO 1uBitH pue 381 Z O pue L 9 02 sinduj 1uBrg pue ye ede 61 sindu pepue ejBurs 1uBiti pue 497 S pue Z S L S 8l sindu peouejeg 1uBit pue 381 z g pue g Z4 sindu LE 6c o Sc vc venwisavw ONIGNad iva 1evo SOISNI S1uva SEVIONAHSS usen ON t Ee Oe OOO t t gg sta HEMOd ONOHd Hold t e O O o P E P Savi z o o advL eS s vs L diNN3Hd 4 zH OS OS 60000 7 O NOOO T T NI ELNO SLNO LLNO NI aai ANT e o as S 1nO TE NI 1svo _ d ao is engi ey 2 T CTOHINOO 3lO0wWa3H eiNv3ud l Jai duuesug LDH SLNdLNO amp INOZ ISLNALNO NIYIN SLNdNI ZR
26. ey 42 again The front panel display 13 shows ALWAYS OFF the default 6 Use the level control knob 14 or level keys 44 to select the desired trigger option ALWAYS OFF ON FOR ZONE 1 ON FOR ZONE 2 ON FOR BOTH ZONES ALWAYS ON 7 To configure another trigger press the enter button 16 or key 42 to return to the output trigger setup menu 8 Repeat steps 4 through 6 9 Press the menu button 15 or key 41 to exit the menu mode TAPE OUTPUT MENU This option allows you to choose the zone through which the tape output receives its signal With this option you can record music from one input device through one zone while listening to music from another device through the other zone 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select TAPE OUTPUT 3 Press the enter button 16 or key 42 The front panel display 13 shows OUTPUT FROM ZONE1 the default 4 Use the level control knob 14 or level keys 44 to select the desired output OUTPUT FROM ZONE1 OUTPUT FROM ZONE2 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode AC MAINS MENU This option allows the KCT to go directly from off to the operational mode and bypass the stand by mode 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level
27. for repair To expedite service you may wish to complete and e mail the Service Request Form in the Service section of our website at http www krellonline com To contact the Krell Service Department TEL 203 799 9954 Monday Friday 9 00 am to 5 00 pm EST FAX 203 799 9796 E MAIL service krellonline com WEB SITE _http Avww krellonline com To return a product to Krell please follow this procedure so that we may serve you better 1 Obtain a Return Authorization Number R A number and ship ping address from the Krell Service Department 2 Insure and accept all liability for loss or damage to the product during shipment to the Krell factory and ensure all freight ship ping charges are prepaid The product may also be hand delivered if arrangements with the Service Department have been made in advance Proof of purchase will be required for warranty validation at the time of hand delivery IMPORTANT HOW TO PURCHASE ADDITIONAL PACKING SERIAL NUMBER Use the original packaging to ensure the safe transit of the product to the factory dealer or distributor Krell may at its discretion return a product in new packaging and bill the owner for such packaging if the product received by Krell was boxed in nonstandard packaging or if the original packaging was so damaged that it was unusable If Krell determines that new packaging is required the owner will be notified before the product is returned To purchase addi
28. he desired input S 1 B 1 tape etc 5 Press the enter button 16 or key 42 The front panel display 13 shows the current balance of the selected input 6 Use the level control knob 14 or level keys 44 to scroll through the list of available balance offsets from 0 to 6 dB right and left in 5 dB increments 7 To set the balance trim for another input press the enter button 16 or key 42 to return to the input balance trim menu 8 Repeat steps 4 through 6 9 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode THEATER THROUGHPUT MODE This option allows you to simplify the integration of an audio video surround sound processor into your system by setting the CAST balanced or single ended inputs to operate as a unity gain stage Krell calls this configuration Theater Throughput When you configure a KCT input for Theater Throughput the KCT volume and balance controls are transferred to the audio video surround sound processor for integrated volume and balance management and ease of operation As long as the KCT input is configured for Theater Throughput and connected to the audio video surround sound processor s main outputs all system volume and balance adjustments are made through the surround sound processor When you disengage the KCT input from Theater Throughput the volume and balance controls revert to the KCT 1 Press
29. inued Page AC Mains Menu 30 Program Remote Menu 31 Input Trigger Setup 31 Setup Memory 32 Krell Link 32 Trigger Delay Setup 33 Exit Menu 33 QUESTIONS AND ANSWERS 34 WARRANTY 35 RETURN AUTHORIZATION PROCEDURE 36 SPECIFICATIONS 37 List of Illustrations Figure 1 The KCT Front Panel 8 Figure 2 The KCT Back Panel 11 Figure 3 The KCT Remote Control 14 iv Krell Current Tunnel Introduction Thank you for your purchase of the Krell Current Tunnel KCT CAST Preamplifier The KCT features Krell Current Tunnel topology and Krell CAST technology which work together to reproduce music with unparalleled sound quality The KCT has dual zone capability for listening to music from different input devices at the same time or listening to one input device while recording another Each zone has its own volume and balance control Step by step menu options allow you to customize the KCT for ease of use and seamless integration into your system Remote control features include a handheld remote control which accesses all preamplifier functions as well as the compact disc functions on Krell compact disc players The KCT also features Krell Link RS 232 and 12 VDC 12 Volt trigger remote control inputs for a variety of system control options A menu driven program remote option allows you to send KCT operating commands to a learning or programmable remote control A front panel display provides feedback on input and zone status menu functio
30. k to the stand by mode Note When you press the power button 1 or key 32 to return to the operational mode the KCT is in the main zone Play and Record This option allows you to play an input device through the main zone while sending output from another device through zone 2 for recording You can also record through the main zone and listen through zone 2 1 Press the power button 1 or key 32 to switch the KCT from the stand by to the operational mode The front panel display shows the main zone is active the currently selected input and main zone volume level 2 Press the input select button 6 or key 39 to select the input device that you want to play through the main zone 3 Begin playing the device Use the level control knob 14 or level keys 44 to adjust the main zone volume to the desired listening level 4 Press the menu button 15 or key 41 to select the main menu The front panel display 13 shows MENU 5 Use the level control knob 14 or level keys 44 to select the TAPE OUTPUT MENU 6 Press the enter button 16 or key 42 to access the submenu The front panel display shows OUTPUT FROM ZONE1 7 Use the level control knob 14 or level keys 44 to select OUTPUT FROM ZONE2 8 Press the menu button or key to exit the main menu 9 Press the zone button 10 or Z2 key 38 to select zone 2 10 Press the input select button 6 or key 39 to select the input device that you want to re
31. keys 44 to select ACMAINS MENU 3 Press the enter button 16 or key 42 The front panel display 13 shows ACMAINS OFF the default 4 Use the level control knob 14 or level keys 44 to select ACMAINS OFF Or ACMAINS ON 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode 30 Krell Current Tunnel PROGRAM REMOTE MENU This option allows the KCT to send its remote control commands to a learning or programmable remote control Note You must place the programmable remote in front of the KCT infrared sensor to send remote control commands 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select PROGRAM REMOTE MENU 3 Press the enter button 16 or key 42 The front panel display 13 shows S1 SELECT the default Use the level control knob 14 or level keys 44 to scroll through all the remote control command options Press the enter button 16 or key 42 The front panel display 13 shows TRANSMITTING To select additional commands press the enter button 16 or key 42 to return to the program remote menu 7 Repeat steps 4 and 5 to select and transmit additional commands 8 The last command on the submenu is EXIT Select EXIT and press the enter button 9 16 or key 42 to return to the main menu Press the menu button
32. le features for the KCT preamplifier please read the entire owner s reference manual The abbreviated procedures in this Quick Start section will allow you to connect and operate the KCT quickly and enjoy its basic features before you read the entire manual Numbers in parentheses refer to Figure 1 on page 8 Figure 2 on page 11 and Figure 3 on page 14 Connecting the KCT Preamplifier 1 Neatly organize the wiring between the KCT and all system components Separate AC wires from audio cables to prevent hum or other unwanted noise from being introduced into the system 2 Connect the CAST cables from the left and right Krell CAST 4 pin inputs 20 on the KCT back panel to the CAST equipped output of your source equipment For balanced or single ended operation connect the interconnect cables from either the left and right balanced 17 single ended 18 or tape 19 inputs to the balanced single ended or tape output of your source equipment Important Connecting non CAST components to CAST inputs or outputs can damage your equipment and void your warranty Do not attempt to alter CAST cable ends or CAST inputs or outputs It is electrically impossible to convert CAST input output chassis mount connectors for balanced or single ended operation Please read the Warranty on page 35 to understand the warranty limitations of the KCT 3 Connect the CAST 23 balanced or single ended 22 main zone outputs on the KCT back panel to your am
33. lowing outputs are for zone 2 24 Balanced Left and Right Outputs The KCT is equipped with one pair of balanced outputs with XLR connectors 12 Krell Current Tunnel 25 Single ended Left and Right Outputs The KCT is equipped with one pair of single ended outputs with RCA connectors Back Panel Remote Connections 26 Krell Link In and Out The KCT is equipped with a Krell Link communications input and output data port Krell Link allows synchronized remote power on and off of other components connected with Krell Link See Krell Link Connections and Operation on page 19 27 12 VDC In and Out The KCT is equipped with three outputs that send and one input that receives 12 VDC power on off 12 V trigger signals to and from other Krell components and other devices that incorporate a 12 V trigger This allows you to turn other components on or off or to and from stand by through the remote control When the KCT is switched to the operational mode and is connected to other components through the 12 V trigger it sends a signal that will switch other components allowing whole systems or parts of systems to be easily coordinated Notes The 12 VDC output power is limited to 30 ma Consult the owner s reference manual of the components used in a custom installation to take full advantage of the remote capabilities of the KCT 28 RC 5 In The KCT is equipped with an RC 5 input that makes custom installation easy and secure by accepti
34. n and selection and all preamplifier operations This owner s reference manual contains important information on the placement installation and operation of your KCT preamplifier Please read this information carefully A thorough understanding of these details will help ensure satisfactory operation and long life for your KCT and related system components Definition of Terms Following are the definitions of key terms used in your owner s reference manual CONFIGURATIONS Krell Link A method of synchronizing remote control operation for Krell systems that include multiple preamplifiers amplifiers and associated components When Krell Link in out connections are used the remote capabilities of the linked components are controlled from one component called the control component The linked components respond to stand by and operational mode commands from the control component via MIDI cables Theater Throughput Theater Throughput is a Krell configuration option that allows the signal from a surround preamp processor to pass through a Krell preamplifier or integrated amplifier with no gain for integrated volume and balance management of Krell home theater systems Krell Current Tunnel 1 INPUT AND OUTPUT CONNECTIONS Balanced A symmetrical input or output circuit that has equal impedance from both input terminals to a common ground reference point The industry standard for professional and sound recording installations
35. n components Together CAST and Krell Current Mode technologies unify separate Krell components into a single global circuit CAST Cable Construction A CAST system uses cables manufactured by Krell and other manufacturers specially licensed by Krell Thin and flexible CAST cables are constructed with the same build quality as other Krell components and are aesthetically matched to the components that Krell manufactures An all metal body and locking connectors with gold contacts are part of the standard no compromise specification developed for every CAST cable made Krell Current Tunnel 3 The Best Musical Performance When you operate a CAST system you will hear significant improvements in every performance area speed precision dynamic range depth and width of the sound stage transient impact tonal balance harmonic distortion and more The goal for CAST is the same company goal used for all Krell products Krell strives for the delivery of the best performance of a musical event for you using the full expression of technology to date 4 Krell Current Tunnel Unpacking 1 Open the box and remove the top layer of foam You see these items 1 Krell Current Tunnel KCT CAST Preamplifier 1 power cord 1 12 VDC 12 Volt trigger cable 1 remote control 2 batteries for remote control 1 T 10 Torx wrench for remote control 1 packet of information containing the Owner s Reference and the Warranty Registration Card
36. ng baseband RC 5 input commands from hardwired remote controllers 29 RS 232 The KCT is equipped with an RS 232 port that receives messages from a computer based control system providing integrated control of all preamplifier functions See the KCT developer s reference RS 232 Port Sending Commands and Interpreting Data for more information Phono Stage Connector 30 Phono Power The KCT is equipped with a phono power port for connecting the KCT with a Krell KPE phono stage Power 31 IEC Power Connector The IEC power connector is for use with the provided IEC standard 15 amp AC power cord Krell Current Tunnel 13 Figure 3 The KCT Remote Control 32 35 r ZONE MUTE PHASE MAIN za 36 2 OC gt 43 45 48 INPUTS m TRACK r SEARCH D K COCO Jt Power 32 Power Key Amplifier Functions 33 Amp Pwr Key 34 Amp Sel ect Key Preamplifier Functions 35 Mute Key 36 Phase Key 37 Main Zone Key 38 Z2 Key 39 Input Select Keys 40 Tape Key Menu Functions 41 Menu Key 42 Enter Key Level Control 43 Bal ance Key 44 Level Keys Compact Disc Functions 45 Pause Key 46 Stop Key 47 Play Key 48 Track Forward and Back Keys 49 Search Forward and Back Keys Krell Current Tunnel Remote Control Description See Figure 3 on page 14 BATTERY
37. nufactured in the United States of America Krell is a registered trademark of Krell Industries Inc and is restricted for use by Krell Industries Inc its subsidiaries and authorized agents Sustained Plateau Bias III is a trademark of Krell Industries Inc and is a Krell technology based on U S Patent No 5 331 291 CAST CAST II Krell Current Mode Krell Link and Theater Throughput are trademarks of Krell Industries Inc All other trademarks and tradenames are registered to their respective companies 2000 by Krell Industries Inc All rights reserved P N 304373 Contents INTRODUCTION DEFINITION OF TERMS REVOLUTIONARY KRELL CAST TECHNOLOGY UNPACKING PLACEMENT AC Power Guidelines QUICK START FRONT PANEL DESCRIPTION BACK PANEL DESCRIPTION REMOTE CONTROL DESCRIPTION Battery Installation and Removal CONNECTING THE KCT PREAMPLIFIER TO YOUR SYSTEM Input and Output Connections KRELL LINK CONNECTIONS AND OPERATION TAPE INPUT AND OUTPUT OPERATING THE KCT PREAMPLIFIER On Off and Stand by Operation Main Zone and Zone 2 Operation TROUBLESHOOTING SYSTEM NOISE CUSTOMIZING THE KCT PREAMPLIFIER Z1 and Z2 Balance Input Name Menu Input Level Trim Input Balance Trim Theater Throughput Mode Brightness Mute Menu Output Trigger Setup Tape Output Menu Page O O O ao 15 15 18 18 19 20 21 21 22 25 26 26 26 27 27 28 29 29 29 30 Krell Current Tunnel Contents cont
38. onal mode and power off when you turn the KCT off 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode 32 Krell Current Tunnel TRIGGER DELAY SETUP This option allows you to customize the number of seconds from 0 to 5 before a trigger activates 1 Press the menu button 15 or key 41 to access the main menu WO N o2 Use the level control knob 14 or level keys 44 to select TRIGGER DELAY SETUP Press the enter button 16 or key 42 The front panel display 13 shows TRIGGER 1 Use the level control knob 14 or level keys 44 to select the trigger 1 2 or 3 that you wish to configure Press the enter button 16 or key 42 Use the level control knob 14 or level keys 44 to select the trigger delay time from 0 to 5 seconds To configure the delay for another trigger press the enter button 16 or key 42 to return to the trigger delay setup menu 8 Repeat steps 4 through 6 9 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 41 to exit the menu mode EXIT MENU This option allows you to exit the menu mode after you have set all preferred configuration options Exit also allows you to exit any menu or submenu without changing the settings 1 2 3 Press the menu button 15 or key 41 to access the main menu Use the level cont
39. one operating options IMPORTANT Always mute or fully attenuate the preamplifier level when switching between active sources such as a CD player tape monitor or VCR Do not change the input connections to the preamplifier while the preamplifier is on Use care when setting high playback levels Always lower the volume level at the first sign of loudspeaker distress ON OFF AND STAND BY OPERATION 1 With the KCT plugged into the AC power source and in the stand by mode red stand by LED 2 illuminated switch to the operational mode by pressing the front panel power button 1 or power key 32 on the remote control The blue power LED 3 illuminates and there is an audible click The KCT is ready for operation 2 With the preamplifier output muted or the volume fully attenuated select a source manually through the front panel input select buttons 6 or through the input select keys 39 on the remote control Start playing the source Use the level control knob 14 or level keys 44 to set the volume to a comfortable listening level Note The KCT automatically plays through the main zone until you select zone 2 operation 3 To return the KCT to the stand by mode press the power button 1 or power key 32 Krell recommends leaving the KCT in the stand by mode when it is not playing music If you wish to turn your system off Turn your system off if it will not be used for a long period of time 1 Place the amplifier
40. plifier s 4 Connect the balanced 24 or single ended 25 zone 2 outputs on the KCT back panel to your amplifier s 5 To power on connect the AC power cord to the IEC power connector 31 then plug the AC power cord into the wall KRELL KCT appears in the front panel display 13 indicating that the preamplifier is initializing After initializing is complete the KCT is in the stand by mode The red stand by LED 2 illuminates Operating the KCT Preamplifier After the KCT is connected to your system and to AC power you can begin operation Steps for basic operation follow IMPORTANT Always mute or fully attenuate the preamplifier level when switching between active sources such as a CD player tape monitor or VCR Do not change the input connections to the preamplifier while the preamplifier is on 6 Krell Current Tunnel Use care when setting high playback levels Always lower the volume level at the first sign of loudspeaker distress 1 With the KCT preamplifier in the stand by mode red stand by LED 2 illuminated switch to the operational mode by pressing the front panel power button 1 or power key 32 on the remote control The blue power LED 3 illuminates and there is an audible click The KCT is ready for operation 2 With the preamplifier output muted or the volume fully attenuated select a source manually through the front panel input select buttons 6 or through the input select keys 39 on
41. r level keys 44 to adjust zone 2 volume to the desired level To turn off this option 1 Press the Z2 key 38 to select zone 2 2 Press the power button 1 or power key 32 once This turns off zone 2 and Switches you to the main zone 3 Press the power button or key again to turn off the main zone and return to the stand by mode Play Either Zone This option allows you to play an input device in either the main zone or zone 2 Main Zone Only 1 Press the power button 1 or power key 32 to switch the KCT from the stand by to the operational mode The front panel display shows the main zone is active the currently selected input and the main zone volume level 2 Press the input select button 6 or key 39 to select the device you wish to play in the main zone 3 Begin playing the device Use the level control knob 14 or level keys 44 to adjust the main zone volume to the desired level 4 Press the main zone key 37 again The preamplifier returns to the stand by mode 22 Krell Current Tunnel Zone 2 Only 1 With the KCT in the stand by mode press the zone button 10 or Z2 key 38 The front panel display 13 shows zone 2 is active 2 Press the input select key 39 to select the device you wish to play in zone 2 The KCT will switch to the operational mode and the device will play in zone 2 only 3 Press the zone button 10 or Z2 key 38 again Zone 2 stops playing and the KCT switches bac
42. rized Krell dealer distributor or Krell for suggestions on how to eliminate it Krell Current Tunnel 25 Customizing the KCT Preamplifier The KCT preamplifiers easy to use menu options allow you to select and set preferred operating options for balance inputs trims Theater Throughput mode display brightness mute trigger setup and delay tape output AC mains remote programming setup memory and Krell Link The instructions below follow the menu order on your KCT IMPORTANT You do not need to press enter to set a selection The last selection chosen is the one entered in the system If at any time you wish to exit the menu without changing the settings select EXIT MENU the last menu option and press the enter button or key Z1 AND Z2 BALANCE This option allows you to add a fixed positive offset to the main zone and zone 2 balance With this feature you can set the balance that is unique to your system s configuration 1 Press the menu button 15 or key 41 to access the main menu 2 The front panel display 13 reads Z1 BALANCE the default 3 Press the enter button 16 or key 42 The front panel display shows ZONE 1 BALANCE and the current balance setting 4 Use the level control knob 14 or level keys 44 to adjust the balance to the desired setting from 0 to 6 dB in 5 dB increments 5 Press the enter button 16 or key 42 to return to the main menu or press the menu button 15 or key 4
43. rol knob 14 or level keys 44 to select EXIT MENU Press the enter button 16 or key 42 You exit the menu mode Krell Current Tunnel 33 Questions and Answers Q Should leave my KCT on at all times A Yes Krell recommends that you leave your KCT preamplifier in the stand by mode when it is not playing music Turn your system off only if it will not be used for a long period of time Q When turn on the KCT there is a loud hum through the loudspeakers What should do A When a new component is introduced into your system a low frequency hum may occur in one or both loudspeakers Check all input and output connections and cables making sure they are of sound construction see Troubleshooting System Noise on page 25 If the interconnects and cables are sound you may be experiencing a ground loop which can often be easily eliminated Please contact your authorized dealer distributor or Krell for suggestions Q Can use the KCT CAST inputs or outputs with other manufacturers components A No Only CAST equipped components can be connected to CAST inputs or outputs Connecting non CAST components to these inputs or outputs can damage your equipment and void your warranty See Connecting the KCT Preamplifier to your System on page 18 Q want my CD player to play through the main zone and the radio to play through zone 2 Can play one louder than the other A Yes Each zone on the KCT has independent
44. s in the stand by mode 2 Press the power button 1 or power key 32 to switch the KCT to the stand by mode 3 Turn off the amplifiers using the power switch or unplug the AC power cord 4 Disconnect the KCT from AC power by unplugging the AC power cord from the wall Krell Current Tunnel 21 MAIN ZONE AND ZONE 2 OPERATION The KCT preamplifiers two zone operation offers a number of listening options Play Both Zones This option allows you to play one input device through both zones or play a different device through each zone simultaneously and adjust volume levels for each zone 1 Press the power button 1 or power key 32 to switch the KCT from the stand by to the operational mode The front panel display 13 shows the main zone is active the currently selected input and main zone volume level 2 Press the input select button 6 or key 39 to select the device you wish to play in the main zone 3 Begin playing the device Use the level control knob 14 or level keys 44 to adjust main zone volume to the desired level 4 Press the zone button 10 or Z2 key 38 to select zone 2 The front panel display shows zone 2 is active the currently selected input and zone 2 volume level 5 Press the input select button 6 or key 39 to choose another device to play in zone 2 You can choose the same input device to play in both zones if you wish 6 Begin playing the device Use the level control knob 14 o
45. shipped through the authorized Krell distributor for that country and at the factory There may be restric tions on or changes to Krell s warranty because of regulations within a specific country Please check with your distributor for a complete understanding of the warranty in your country If a unit is serviced by a distributor who did not import the unit there may be a charge for ser vice even if the product is within the warranty period Freight to the factory is your responsibility Return freight within the United States U S A is included in the warranty If you have purchased your Krell product outside the U S A and wish to have it serviced at the factory all freight and associated charges to the factory are your responsibility Krell will pay return freight to the U S A based freight forwarder of your choice Freight and other charges to ship the unit from the freight forwarder to you are also your responsibility Krell is not responsible for any damage incurred in transit Krell will file claims for damages as necessary for units damaged in transit to the factory You are responsible for filing claims for shipping damages during the return shipment Krell does not supply replacement parts and or products to the owner of the unit Replacement parts and or products will be furnished only to the distributor performing service on this unit on an exchange basis only any parts and or products returned to Krell for exchange become th
46. the remote control Start playing the source Use the level control knob 14 or level keys 44 to set the volume to a comfortable listening level Note The KCT automatically plays through the main zone until you select zone 2 operation 3 To return the KCT to the stand by mode press the power button 1 or power key 32 Krell recommends leaving the KCT in the stand by mode when it is not playing music If you wish to turn your system off Turn your system off if it will not be used for a long period of time 1 Place the amplifiers in the stand by mode 2 Press the power button 1 or power key 32 to switch the KCT to the stand by mode 3 Turn off the amplifiers using the back panel power switch or by disconnecting them from AC power 4 Disconnect the KCT from AC power by unplugging the AC power cord from the wall Krell Current Tunnel uong 491ud 9L uong nu l GL suonounJ nu lN qouy 01u02 9497 rL 041002 I A91 Aeldsig jeueg 10044 L aqq z eucz c Q31 eucz ure LL uong eucz 04 uong eseud 6 uopng sin 8 uonng ede 7 suonng 158 S 1ndu 9 C31 49niuusue4ul peJeJju S Josues peJeJju SsuornoungJ JO1JUOD 9j oul9H Q31 49 0d q31 a pueis z uonng 1 MOd L Ae dsiq suonoung J iiduie iq JOMOd 9k S SL cL IL OL Z v 4 L SS 5 j DINSIA JeuUNL aueuunc S2 INOZ H3M0d ue 9 gR OF O O O O Mii LT nas ani i om LO vi el 6 8 9 JGUEg 1UO44 LOM U
47. tional packaging please contact your authorized Krell dealer distributor or the Krell Service Department for assis tance Your KCT product serial number is 36 Krell Current Tunnel Specifications Inputs Main Outputs Zone 2 Outputs Tape Loop Control Inputs Control Outputs Power Inputs Power Outputs Voltage Gain Current Gain Volume Controls Input Overload Output Overload 2 pr CAST Lemo 2 pr Balanced XLR 3 pr Single ended RCA 2 pr CAST Lemo 1 pr Balanced XLR 1 pr Single ended RCA 1 pr Balanced XLR 1 pr Single ended RCA 1 pr Single ended Inputs RCA 1 pr Single ended Record Outputs RCA Buffered with Programmable Zone 1 RS 232 Input 9 pin D subminiature Connector 1 RC 5 Input 1 4 inch Coaxial Connector 1 12V Trigger Input 8 5mm Connector 3 Individually Programmable 12V Triggers 3 5mm Connector 1 Krell Remote Link 5 pin DIN Connector 1 IEC AC Mains Receptacle 1 20V DC for KPE 9 pin D subminiature Connector 12 dB Balanced Output 6 dB Single ended Output 12 dB CAST Output 16 bit Discrete R 2R Ladder Main Zone 16 bit Multiplying DAC Zone 2 12 mA RMS CAST 12 V RMS Balanced or Single ended 7 V RMS Single ended 14 V RMS Balanced 14 mA RMS CAST Krell Current Tunnel 37 Frequency Response 0 4 Hz 220 kHz 0 1 dB Main Zone 0 1 Hz 1 5 MHz 3 dB Main Zone 0 9 Hz 100 kHz 0 1 dB Zone 2 0 4 Hz 400 kHz 3
48. ton 16 or key 42 The front panel display 13 shows PLEASE WAIT The KCT switches into the stand by mode and reinitializes The front panel display shows KRELL KCT 6 Press the power button 1 or key 32 to return the KCT to the operational mode The settings you selected are stored KRELL LINK This option allows you to customize the operation of the KCT and Krell amplifiers connected with Krell Link See Krell Link Connections and Operation on page 19 1 Press the menu button 15 or key 41 to access the main menu 2 Use the level control knob 14 or level keys 44 to select KRELL LINK 3 Press the enter button 16 or key 42 The front panel display 13 shows DISABLED the default 4 Use the level control knob 14 or level keys 44 to select the preferred Krell Link option DISABLED ENABLED AUTO ON Following are the definition of terms used with Krell Link Disabled The amplifiers connected through Krell Link remain off when the KCT is switched to the operational mode for example if you wish to record without listening to music The amplifiers can not be powered on when this option is engaged Enabled The amplifiers connected through Krell Link remain off when the KCT is switched to the operational mode To turn the amplifiers on and off use the amp pwr key 33 on the KCT remote control Auto On The amplifiers connected through Krell Link automatically power on when you switch the KCT to the operati
49. y to invert the absolute polarity of the variable output 180 degrees for the selected input The front panel display 13 shows INVERT for the negative phase the display remains blank for the positive phase Krell Current Tunnel 15 37 Main Zone Key Use this key to select the main zone the main listening or viewing area The red main zone LED 11 on the front panel illuminates when the main zone is activated 38 Z2 Key Use this key to select zone 2 The green zone 2 LED 12 illuminates when zone 2 is activated Note Both zones can play simultaneously 39 Input Select Keys Use these keys to select the corresponding rear panel input that is connected to a CAST C 1 C 2 balanced B 1 B 2 or single ended S 1 S 2 S 3 analog source The front panel display 13 shows the selected input the active zone and volume level 40 Tape Key Use this key to select the corresponding rear panel input that is connected to a tape analog source When TAPE is activated the front panel display 13 shows the zone that is the pathway for the tape output See Tape Output Menu on page 30 Menu Functions 41 Menu Key Use this key to access the menu options for customizing the KCT The front panel display 13 shows MAIN MENU and submenu name See Customizing the KCT Preamplifier on page 26 42 Enter Key Use this key to access submenu selections Level Control 43 Bal ance Key Use this key along with level keys 44 or level
Download Pdf Manuals
Related Search