Dual Mono Integrated Amplifier User guide
Contents
1. Overview CD player functions amp A B mu B Q Repeat one all Q Program CD 1 only pus mM Qo Display dim ns i 3 Remain CD 1 only T es Q Direct track selection 1 10 10 Q Previous track Q Fast forward Q Fast backwards Amplifier functions Q Volume up t Volun Bown Q Next source toggle 2 Previous source toggle Q Mute 0060060 00000 0600060660606 Buttons present but not in use Q Standby Q Phase Functions Volume up By pushing this button the volume control knob will turn and the blue level indicator dot will rotate clockwise Holding the button down will eventually make the knob turn all around to maximum level Volume Down This button will do the exact opposite of the volume up button Push the Entton down until a pleasant level is reached Next source toggle By pressing the arrow up button the next input source will be selected ac amn to the following order Bal 1 Bal 2 CD Tuner Tape HTH When it reaches the last source HTH it will start over again by selecting the Bal 1 input Source toggle previous The arrow down button will switch the previous input source as follows HTH Tape Tuner CD Bal 2 Bal 1 When reaching the first source Bal 1 it will then start over again by selecting the HTH input i i j i iii nd Ow d UD Ug Mute To enable Mute push the mute button once Push it again and the function is is now di2. Rm Gamul Science amp Passion DI 150 Dual Mono Integrated Amplifier User guide i LOE Content of the DI 150 box 3 safety instructions e EE m ee tcd 4 WW e Tm er 4 Never e 4 Always 0 00 o AMAMAMhMhMhMhMuMhmmReAnMHRmnmnmRTR 4 About the GamuT DI 150 ne 5 Design considerations 000000000 0 S 5 Electrical circuits considerations 0 0 5 Unpacking eel eee TE E Ig 5 Placement s ma 6 Connecting to mains ttn ee ms 6 Connecting to other equipment ate UMP Lio emp 6 INPU S RN NL se d rl LE PET 6i Qut puts mmm mmm e e T m ccm LS A Howtooperate HH HH HH HH 8 i Selecting a source 0 Adjusting the listening level 00 000000000 8 Mute function 1 S anam mm 8 HTH Difect mmmummmmmmmmmmmmmmmm m mm m m m m m mm mmmm mrmrmrmrmrmrmrmrmmmmma 9 Recording from an input source eee 9 The remote control d 10 Overview dte et ol sl gh ireann 10 FUNCH OIS 4 pt re oe t o al Aa 11 Burn in and warm Up s 12 Burn ing NN A a E 12 A o a E ian 12 Maintenance s MENU Ce 12 Service esses edd d ctt tdm tette 12 The protection circuitry a second of silence 2 s 13 Technical quality s 14 POPE CPP errr Pree r tere eter eee eee eee ee ee eee eee ee ee eee eee eee eee eee eee eee eee eee eee eee ee eee ee ee eee eee ee eee eee eee eee eee ee ee eee eee eee ee eee eee ee eee eee
3. f du od M i I gg WW DON oot DO a i I i a i i i j I f 1 i iil IH a Mternational A S EEEEEENM NEN 4 23 4 esterled 28 LUI Bygning A DK 4300 Holbaek Denmark Y dus Telephone no 45 70 20 22 68 Fax no 45 59 43 97 26 WWW gamutaudio com LLL ZL IT P Warning e To prevent fire or shock hazard do not expose this appliance to rain or moisture No user serviceable parts inside Refer servicing to a qualified technician Never remove the cover unless qualified to do so This unit contains dangerous voltages Never Let children or erownups push anything into holes or slots in the case this could result in harmful electrical shock and could cause damage of the equipment Guess or take chances with electrical equipment of any kind it is always better to be safe than sorry Obstruct the necessary all around ventilation especially DO NOT place the set close to curtains or on soft furnishing such as carpets Overheating can cause unnecessary damage and shorten the lifespan of the equipment Always Read the user manual and familiarize yourself with the functions before you attempt to use this equipment Ensure that all electrical connections including the mains plug extension leads and intercon nections between pieces of equipment are properly inserted and set in accordance with the manufacturer s instructions Check that t
4. eee ee eee eee eee eT eee ee ee eee ee ee eee eee eee eee eee eee eee ee eee eee eee eee ee ee eee eee ee ee ee ee eee ree I LI e One GamuT DI 150 integrated amplifier i e One mains cord with plug for either 115VAC or 230VAC 7 e One GamuT RC1 amplifier CD player remote control unit e Two AAA batteries 4 J I a i 1 d A i f i 4 i I i d i i 1 i i i 4 E I i i i 1 1 I i I m i wg ou i i I i i i f 1 h i i I i TL 3 047411 i d 1 i i 1 i I 1 i i ij I i i I 1 i i A i I i i d i i h I i I j i i f i i 4 1 I 3 i i j if gm gg I IM 5 1 i i i I i i i i i i 4 i i i J i i i i 7 i 5 i L l I i E HN wg Wy Wy W id 0 NM NM NN FP B Wt Ww oa a 1 i l i f i J J I a 1 i i i i i i i i t i I 4 i H l I WoW Wo NW iW M i i Bl Si rank au 44 i i I I i N i i i i i Wo i l p f j j I i j i i i i i d EO M I FO M T M d d i l BN 0 3 a a EE i I I wg HW M M j l l i i I wi i 1 i 1 i i l i I i i i l i I i i I iW I Id 9 43 d a og Wi 1 l i I J i I I I i i uw mW M i
5. the DI 150 front panel you will find the large volume control knob On the outside parameter of the knob a small blue dot lights up to indicate the level setting Turn the knob by hand to the desired level The scale goes from approx 8 o clock minimum level to approx 4 o clock as maximum output level The output level can also be adjusted by the remote control please refer to the section remote control N Bal 1 Tuner Bal 2 Tape e e CD HTH Dim Mule a E C D e Ball Tuner e e Bal2 Tape e CD Diect HTH e e Dim Mule e L J Please note We have selected an expensive ALPS dual logarithmic potentiometer for setting the listening level To reduce noise we have chosen a 1kOhm version Such a potentiometer cannot make the sound disappear completely even when you turn it down to the lowest setting If complete si lence is required enable the Mute function described below Mute function The DI 150 features a mute function that will efficiently mute the selected signal Push the mute button to activate the Mute function The blue dot indicating the selected source is now replaced by a dot indicating the mute function is enabled as shown below Push the Mute button again to disable the mute function and return to the previously selected source and level For your comfort and the safety of your equipment please ensure before hand that the volume knob has not accidentally been adjusted further tow
6. GamuT cannot accept responsibility for damage incurred due to improper usage connection or manufacture of other cables than the enclosed The mains switch is located underneath the amplifier s front right corner When the amplifier is switched on the display will light up and you will hear two small clicks from inside the amplifier LLL ng Jt rA L 44 JOM I The GamuT DI 150 features six signal level inputs and three available outputs Inputs Four unbalanced inputs e CD e Tuner e Tape e HTH bypass option Two Balanced inputs e Bal 1 e Bal 2 Please note that all connectors of the DI 150 are gold plated This is done to ensure long lasting and Stable connections Do only use cable and connectors either gold or silver plated All of the inputs are line level inputs If a turntable is to be connected a separate RIAA amplifier must used in between the turntable and the DI 150 You can use any of the inputs you like The HTH input also features a direct function Please refer to the section how to operate The DI 150 also features two set of balanced inputs We follov the international IEC standard for the balanced connections please ensure that the connected equipment complies with the following Pin connection of the XLR 1 Ground 2 Positive 3 Negative Some other brands have Pin 2 and 3 reversed They will work but the absolute phase will be reversed You can solve this by reversing the wires in the ma
7. ards the maximum out put setting before you disable the mute button C N Bal 1 Tuner Bal 2 Tape eo CD HTH Dim Mule e E The Mute function can also be enabled and disabled by the remote control please refer to the section remote control HTH Direct zu 1 L TAPE OUT OUT R OUT L OUT HTH This function is intended for cases where the DI 150 is connected toa surround preamplifier or processor Enable the 66 2 direct function by EP pushing the small switch a EE sc situated at the left side AA cssc IA of the HTH input termi Made in Denmark by GamuT International A S nals on the backside of the amplifier MAINS Small characters at the HTH display now indicate direct The direct function of this input will bypass the volume control and lead the signal directly the output stage of the DI 150 This converts the DI 150 into a power amplifier driving your front left and right loudspeakers in a sutrauid setup While the HTH direct is enabled and the HTH gt input is selected the remote controlled volume will be disabled to avoid conflict with gen remote control systems I Recording from an input source I E E E E ATH You can always record from the actual source selected using the Tape Out Please note that the out put level will match the input level due to the internal buffer in GamuT DI 150 Buan PEN
8. d the loudspeakers will survive severe faults that normally would lead to critical damage to either or both units Unpacking Carefully cut open the box with a knife Remove the cables from the carton and lift up the DI 150 from inside the box Remove the protective plastic enclosing the amplifier Please be careful not to place the amplifier on the front panel or bend the various terminals on the backside when doing so Please keep the packaging material in a safe place as it might come in handy later Placement The DI 150 will get hot during use It is important that it has free space all around the amplifier espe cially sides and the top a li e um Onnec Ing iO mains Your DI 150 has been especially made for the country to which it has been shipped Any attempt to change the voltage or other types of modifications should be considered unsafe and may cause dam age to both the amplifier and any connected equipment Warranty is annulled by any form of modifi cation performed by any person not authorized by GamulT Connect the DI 150 to the mains supply with the supplied IEC mains cable For further improvements to the level of sound quality various types of mains cable type may be tested Like the importance of any other cable in the system the quality and refinement of the mains cable has influence on the total balance of he sound Please feel free to experiment with the various brands available in your country Please note that
9. he GamuT DI 150 mains fuse rating is set correctly for your local mains voltage Please see backside label at mains inlet About the GamuL DI 150 The DI 150 arises from the wish to melt two high end audio components into one while compromising neither the quality of design nor the electrical circuits Our overall goal was to create the best sounding integrated amplifier available Design considerations The cabinet is a rigid construction with use of massive and genuine high grade materials such as alu minium and stainless steel This does not only contribute to the touch and feel factor but is essential for a long lasting life even in a tough environment A GamuT product is built to be used daily and we expect our products to be in the field for many years to come Under normal circumstances the DI150 should not need inspection or service for quite a while The capacitors for instance have a promised lifespan of 10 years without degrading Electrical circuitry considerations All components used in the DI 150 are of the highest quality and have been selected through intensive listing sessions from the PCB itself over the non magnetic chassis to the WBT output terminals The DI 150 is based on following GamuT specialties e Dual FET hybrid input buffer e Single power MOS FET output circuit e Extremely powerful power supply with high bandwidth and low impedance e Aunique protection circuit that ensures both the amplifier an
10. ion also constantly checks the energy above 20 kHz which humans do not hear This means that the protection circuit can interfere even though you cannot hear any reason for this l you experience these seconds of silence simply turn the output level down until the music plays without interruption You can also provoke the subsonic protection by playing warped records without using a subsonic filter Please check your tone arm cartridge resonance frequency which should be about 8 12 Hz to reduce the effect of warped records 13 Technical a dlit i i Output power 230V 115V Frequency range _ Speaker load EN THD Distortion Line input impedance Line output impedance XLR pin information Mai ns S dle power consumption Maximum power consumption Di mensions Shi pping weight 180 Watt 8 ohms 360 Watt 4 ohms 20 22 000Hz 0 1dB lt 1 5 ohms 100dBA below 100W 8 ohms 0 0555 Mainly 2 harmonic decreases with higher out level 20 kohms unbalanced 40 kohms balanced ae 75 ohms unbalanced imm 150 ohms balanced E 1 Ground 2 Positive 3 Negative 115VAC 230VAC 100W 1000W 155 x 431 x 4410 mm HxWxD 30 Kg We at Gamut hope you will enjoy the musicality a GamuT product brings into your home Should you have any questions or other matters that you would like to share with us then please do not hesitate to get in touch with us We wil
11. l look very much forward to hearing from you jo LLU LOU le LULL LLL LOU LDU LLU LO ULL ULLADULLA Dd dd hdd hdd hdd ddd ddddddlde uy Congratulations You have just invested in one of the finest Integrated amplifiers available Many years ago we chose the word GamuT to be our company name This single phrase in Latin means a complete array or an all encompassing spectrum In our case it refers to the entire range of musical notes The GamuT name therefore fits our philosophy perfectly Our goal is not missing out on one single element among the myriads of tiny bits of information that create a realistic sound experience There are many more things to reproducing music than just reproducing the individual musical tones But it is the complex spectrum of multiple individual tones created by the musicians instruments and voices and not least the reflected signals thereof that create the sounds we detect with our ears and send to our brain to give us the wonderful sensations only music is capable of These unique musical feelings are what we see as the GamuT mission to give to you As in every GamuT product our amplifiers are designed with the capability of giving you the best pos sible musical experience which is synonymous with reproducing all of the essential information in the recording to create the illusion of being there To ensure this we use only the best raw materials trimmed and crafted to perfecti
12. le plug of your balanced interconnects The two balanced input can be used for any balanced signal source such as a CD player or a separate D A converter You can also use them with a pair of RCA female XLR male adapters for further con nection of unbalanced sources Outputs What comes in must come out The DI150 offers you plenty of option when connecting e One pair of unbalanced signal line out e One pair of balanced signal line out e One Tape out e On pair of speaker out The unbalance and the balanced line out enable you to connect the DI150 to an external power am plifier to either bi amp or drive a second set of loudspeakers You can also use the line out to feed an active subwoofer In any case the signal of the output follows the selected level and source The Tape out tended to be used for an analogue recording device It has a fixed level that follow the actual input level with unity gain It also has its own buffer amplifier so that the recording device load does not disturb the main signal path How to operate Selecting a source Select the desired source by pushing the but ton beside the name of the connected source A blue dot will light between the text and the button to indicate the selected source In ex ample to the right the CD input is selected The input selection can be toggled with the remote control please refer to the section Remote control Adjusting the listening level In the middle of
13. on by the best engineers and sound enthusiasts in the industry Following the guidance lines in this manual will assure you an exquisite sound experience so be ready for the entire range of musical notes We wish you years of proud ownership and happy listening We feel confident that you will cherish this amplifier for both its amazingly clear reproduction as well as for its splendid craftsmanship and beautiful appearance Best wishes 5 Gamul International A S 15 International A S Oesterled 28 Bygning A DK 4300 Holbaek Denmark Telephone no 45 70 20 22 68 Fax no 45 59 43 97 26 WWw gamutaudio com
14. on circuit come from our professional amplifiers where it has worked well since 1982 The protection circuit can detect e DC errors e high level subsonic signals e long term ultrasonic signals e high temperature e low impedance loads or short circuits l needed the protection will simply mute the input signal and if necessary open the output relay The relay will normally open only after muting the input signal to avoid relay switching of strong cur rents that could damage the relay contacts In case of e g a short circuit the input is muted for a second Then a 1 millisecond long pulse is sent out to test again If the short circuit still is present it waits a second and tries again and so on Less than a second after the user has removed the faulty cable the system will remove the muting The protection also detects too low impedance loads and alerts the user by muting for a second This way the user can be sure of hearing only clean non distorted audio The normal current limiting and momentary distortions of the music are completely avoided in the GamuT DI150 power amplifier You may experience a second of silence while the music is playing loudly This is the protection acting to protect your audio system Any amplifier will start to clip the top of the music if you exceed the maximum power level Technically clipping generates a lot of high frequency energy which can burn out the tweeters in your loudspeakers The protect
15. sabled li I it I IM W Burn in and warm up Burn in All new electronics must be burned in to achieve its optimum performance Please allow the new amplifier to burn in by playing music with the loudspeakers connected for one hundred hours before critical listening is performed Warm up Please allow the amplifier and other audio equipment to warm up prior to serious listening Expect at least one hour of warming before optimum performance can be achieved A N e T LL On enance To ensure long lasting durability and to prevent magnetic influence on the electronics the cabinet is made from stainless steel and aluminum For cleaning the cabinet use a dry cloth and wipe dust away If needed moisturize the cloth with a small amount of window cleaning dissolvent Be very careful not the scratch the mirror display at the front Do not use any other type of cleaning material or polish as you may destroy the cabinet s protective coating i Service The simplicity of the GamuT DI 150 means that very fev parts can break down Should you ever require service you can either contact your dealer or national distributor who can solve any problems locally You are also very welcome to contact GamuT International A S directly if you need any information or help Our contact information is listed on the last page of this user guide 12 e e e e ja ra 4 7 f a secone 7L LO LS 7A ence The ideas for the protecti
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