to Open Manual File - American Musical Supply
Contents
1. 1 PT 4500 2 AA size 1 5 V bodypack transmitter dry batteries e Check that the package contains all the parts listed above If anything is missing please contact your AKG dealer e For optional accessories refer to the current AKG catalog or folder or visit www akg com Your dealer will be glad to help You can use the PT 4500 bodypack transmitter with both dynamic microphones and con denser microphones operating on a supply voltage of approx 6 volts You may also connect an electric guitar electric bass or remote keyboard The PT 4500 operates in one subband up to 30 MHz wide within the 500 MHz to 862 MHz UHF carrier frequency band Within the subband you can either set the carrier frequency di rectly in 25 kHz increments or select one of the Channels of the Preset Frequency Groups of your transmitter The transmitter provides three operating modes In LOCK mode the microphone output signal is transmitted to the receiver All setup func tions and controls except for the MUTE switch are electronically locked to prevent parame ters from being readjusted unintentionally during a performance or lecture The LCD screen displays the LOCK label ACTIVE mode allows you to adjust and save the carrier frequency and input gain In SILENT mode power to the transmitter is on but no RF signal is transmitted We rec ommend using only this mode for setting the carrier frequency This is the only way to make sure you won t go on air on a f2. contact your nearest AKG Service Center Rec gt Acc lt BP 4000 battery pack needs recovery Run recovery cycle Refer to User Manual of optional CU 4000 charger 35 Www americanmusical com Err gt JoG lt Internal setup switch error 1 Setup switch responds in spite of error message Switch power to transmitter off wait for 10 sec onds and switch power back on Setup switch fails to respond Re move and reinsert batteries BP 4000 battery pack and switch power to transmitter on f error persists contact your near est AKG Service Center e The above error messages may appear on the display upon powering up or during operation e To delete an error message push the setup switch e For more hints on troubleshooting refer to the SR 4000 receiver manual 36 Www americanmusical com Carrier frequency ranges 500 530 570 600 650 680 680 710 720 750 760 790 790 820 835 862 MHz Carrier frequencies up to 1 200 Modulation FM Rated deviation 20 kHz Audio bandwidth 35 Hz to 20 kHz T H D at 1 kHz 0 396 at rated deviation S N Ratio A weighted 118 dB A typical HF output 50 mW max ERP Audio input 3 pin mini XLR connector Input level 140 dB SPL Q nominal deviation Current consumption 135 mA Power requirement 2 AA size 1 5 V batteries or BP 4000 rechargeable battery pack Battery life dry batteries 15 hours typical BP
3. on a frequency that is not allocated or coordinated and risk jamming some other radio service or active radio mic Depending on the way you switch power to the transmitter ON the transmitter will be in ei ther LOCK mode or SILENT mode on powering up 1 j Pa If you are not sure as to what carrier frequency the transmitter is tuned to switch the transmitter to SILENT mode refer to section 3 4 1 below and check that the current carrier frequency is legal and identical to the frequency selected on the receiver Push and hold the setup switch 6 until the backlighting of the display 2 comes on The display 2 will first show the firmware version and then the currently selected car rier frequency in MHz As the backlighting goes out the display changes as follows SE GRP jdd iie ET The transmitter is now in SILENT mode If the carrier frequency is not an allocated or coordinated one and or different from the receiver frequency set the transmitter to a suitable legal frequency referring to section 3 6 Press the ON OFF button 3 for approx 0 6 seconds As soon as the below screen appears on the display 2 the transmitter is in LOCK mode Www americanmusical com The LOCK label indicates that all controls except for the MUTE switch are electroni cally locked to prevent misadjustment e fthe microphone is muted the MUTE label appears on the display and the status LED Note is lit
4. turn the setup switch briefly to the left 3 6 2 Frequency Menu Press Setup briefly The display will change like this We Buus MHz 2 To increase the frequency by 25 kHz turn the setup switch briefly to the right To decrease the frequency by 25 kHz turn the setup switch briefly to the left 3 Having set the desired frequency push the setup switch briefly This brings up the fol lowing screen SAU E FREG hs 4a f you want to save the selected frequency push the setup switch briefly Your setting will be saved in memory and the display will change as follows 4b H you d rather not save the selected frequency briefly turn the setup switch to the left or right This brings up the following screen SAU E n FREG pa Push the setup switch briefly The transmitter will stay tuned to the original frequency PT 4500 29 Www americanmusical com 3 7 Multichannel Systems 1 Be sure to assign a separate carrier frequency to each wireless channel transmitter and receiver 2 To find intermodulation free carrier frequencies quickly and easily we recommend se lecting all required carrier frequencies from the same Frequency Group within the same Preset Note If reception on the selected carrier frequency is poor use Automatic Frequenc y Selec tion on the receiver to find the next clean Channel within the selected Frequency Group Should you find no clean Channel use Automatic Freq
5. with the instructions may cause harmful interference to radio communications However there is no guarantee that interfer ence will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Heorient or relocate the receiving antenna e Increase the separation between the equipment and the receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help shielded cables and IO cords must be used for this equipment to comply with the relevant FCC regulations Changes or modifications not expressly approved in writing by AKG Acoustics may void the user s authority to operate this equipment 2 22 2 1 Introduction 2 2 Packing List 2 3 Optional Accessories 2 4 Description Important 2 4 1 Controls Refer to fig 1 www americanmusical com Dear Customer Thank you for purchasing an AKG product This Manual contains important instructions for setting up and operating your equipment Please take a few minutes to read the instruc tions below carefully before operating the equipment Please keep the Manual for fu ture reference Have fun and impress your audience
6. 4000 12 hrs typical S ZE 70 x 90 x 25 mm 2 8 x 3 5 x 1 in Net weight 320 g 11 3 oz without batteries This product conforms to the standards listed in the Declaration of Conformity To order a free copy of the Declaration of Conformity visit htto Awww akg com or contact sales akg com 3 Www americanmusical com 110 Www americanmusical com 111 Www americanmusical com Mikrofone Kopfh rer Drahtlosmikrofone Drahtloskopfhorer Kopfsprechgarnituren Akustische Komponenten Microphones Headphones Wireless Microphones Wireless Headphones Headsets Electroacoustical Components Microphones Casques HiFi Microphones sans fil Casques sans fil Micros casques Composants acoustiques Microfoni Cuffie HiFi Microfoni senza filo Cuffie senza filo Cuffie microfono Componenti acustici Micr fonos Auriculares Micr fonos inal mbricos Auriculares inal mbricos Auriculares con micr fono Componentes acusticos Microfones Fones de ouvido Microfones s fios Fones de ouvido s fios Microfones de cabe a Componentes acusticos AKG Acoustics GmbH Lembockgasse 21 25 A 1230 Vienna AUSTRIA phone 43 1 86654 0 e mail sales akg com For other products and distributors worldwide visit www akg com CE OM X nous ok H A Harman International Company Technische Anderungen vorbehalten Specifications subject to change without notice Ces caract ristiques sont susceptibl
7. Group within the same Pre set and selecet a new frequency for each transmiter and receiver f you know you won t be using the transmitter fo more than a week remove the bat teries or BP 4000 battery pack from the transmitter Make it a habit to charge the BP 4000 battery pack fully every time you used the trans mitter for at least one or two hours This is a good way to prevent the battery pack from dying in the middle of the next gig Always charge the BP 4000 battery pack fully before storing it outside the transmitter This will maintain the battery pack s capacity at a higher level for a longer time PT 4500 4 3 Muting the Microphone Refer to fig 1 4 3 1 Optional Remote Mute Switch Refer to fig 4 4 4 Replacing Batteries 4 5 Microphone Technique 4 5 1 C417 L CK 55 L Lavalier Microphones 4 5 2 4 2 C 520 L C 555 L Head worn Microphones 4 6 Multichannel Systems 4 7 Battery Care 33 34 Www americanmusical com To clean the transmitter surfaces use a soft cloth moistened with water Www americanmusical com Err gt rF lt PLL error Receiver unable to lock on 1 Press setup switch briefly and set to selected frequency different frequency 2 f problem persists contact your nearest AKG Service Center Err gt SYS lt Frequency settings cannot be changed 1 Switch power to transmitter OFF and back ON after about 10 seconds If problem persists contact your nearest AK
8. the inside of the trans mitter toward the ON OFF switch The status LED 1 will change to green The MUTE switch is active in all modes 5 Audio input 3 pin mini XLR connector with both mic and line level pins that automat ically match the connector pinout of the recommended AKG microphones or optional MKG L instrument cable 6 Setup switch Sets the various parameters of the transmitter The setup switch has the following functions e LOCK mode Turn left or right briefly to scroll between Frequency Preset only if a Preset has been loaded Gain and Battery Capacity shown in hours screens Long push toggles between LOCK and ACTIVE modes when the transmitter is ON When power to the transmitter is OFF a long push switches the transmitter ON and places it in SILENT mode 23 24 2 4 2 Microphones Instrument Cable optional Refer to fig 2 Www americanmusical com e ACTIVE and SILENT modes only Short push calls up a parameter for adjustment or confirms a selected value Turn left briefly to select a menu item or decrease a parameter value Turn right briefly to select a menu item or increase a parameter value Turn left or right and hold to scroll through available values 7 Charging contacts The recessed charging contacts allow you to recharge the optional AKG BP 4000 battery pack on the optional CU 4000 charger without having to remove the battery pack from the transmitter 8 REMOTE MUTE jack This jack al
9. G Service Center Err gt USr lt Last setting cannot be loaded Set frequency again If problem occurs frequently contact your nearest AKG Service Center Err gt FrE lt Frequencies cannot be selected from Continue with previous setting Frequency screen Press setup switch briefly and set frequency from Preset screen f problem occurs frequently con tact your nearest AKG Service Cen ter Er PrE All Presets defective no Preset selec Use frequency screen to set fre comes up on powering up or when try table guency ing to select a Preset and appears on section 3 6 2 receiver too Contact your nearest AKG Service Center Err gt PrE lt One or more Presets defective You can select Presets but note comes up on powering up only and that defective Presets will not be does not appear on receiver available Contact your nearest AKG Service Center Err gt rPt lt No remaining battery life data available 1 Check batteries replace standard rechargeable batteries immediately with dry batteries or AKG BP 4000 battery pack Remove and reinsert BP 4000 bat tery pack f error persists charge battery pack f error occurs with several different battery packs or types of dry bat teries contact your nearest AKG service Center Err gt AF lt No signal at audio input Check microphone element Mount microphone element Briefly push setup switch f error occurs frequently
10. Www americanmusical com PT 4500 BEDIENUNGSANLEITUNG S 2 Bitte vor Inbetriebnahme des Gerates lesen USER INSTRUCTIONS p 20 Please read the manual before using the equipment MODE D EMPLOl Veuillez lire cette notice avant d utiliser le syst me ISTRUZIONI PER L USO pn 56 Prima di utilizzare l apparecchio leggere il manuale MODO DE EMPLEO 74 jsirvase leer el manual antes de utilizar el equipo INSTRU ES DE USO p 92 Favor leia este manual antes de usar o equipamento Www americanmusical com 2 Description eee 22 Se cule 0 a O 22 eki Ol EE 22 2 3 Optional e e e A A A RAN RM ece 22 E DES EN PO EE 22 GE LEE gebeten 22 2 4 2 Microphones Instrument Cable optional 24 We E 25 3 1 Connecting a Microphone Instrument ara ra 25 3 2 Insertng EE 25 3 3 peratingModes eee 25 3 4 EE 26 3 4 1 Powering pinsSILENTMode e 26 3 4 2 oW SAL 0 Eer 26 3 5 Powering DOWN Ee 27 3 6 Setting the Carrier FFeSLIGNOU E 27 eg dE E 2f SOLREGN MONU R 29 SIE Ee 30 0 8 GWNA APUL OD EE KA e Det 30 3 8 1 Setting Gain Manual 30 3 8 2 Using e Huel IEN 31 4 Operating EE 32 4 1 Status Screens and Setup TEE 32 ATA LOGK MOUE EE 32 41 2ACTWVEandSILENTModes eee 32 4 2 Selecting Modes EE 32 4 3 EDERT 33 SE RR eeler SR 4 4 Replacing Batteries nnn nn
11. dicated below the CH label The spacing between these frequencies is wide enough to prevent any mutual interference intermodulation Presets make it much easier to design a multichannel system They save time because you do not need to calculate your own car rier frequencies and help you avoid intermodulation problems Each Preset has a one or two character NAME relating to the country where the respec tive carrier frequencies are allocated e g SD for countries with no regulations US for the USA or UK for Britain etc The Preset names are sorted alphabetically When designing a multichannel system make sure to use Channels within the same Group only Using Channels of different Presets and or Groups simultaneously may cause inter modulation e Some Presets may be approved in more than one country To check which Frequency Note Group s is are approved in your country visit www akgfrequency at or contact your local regulation authority 21 Www americanmusical com 1 Push the setup switch briefly The NAME label and the name of the currently active Pre set will start flashing If no Preset has been stored in memory the 2nd line of the display shows 2 To select the next Preset turn the setup switch briefly to the right To select the previous Preset turn the setup switch briefly to the left 3 Having selected the desired Preset push the setup switch briefly The GRP label and the numb
12. en designed primarily for use with L type MicroMic Series microphones from AKG see section 2 4 2 If you wish to connect other microphones from AKG or other manufacturers to the PT 4500 please note that you may have to rewire the existing connector of your microphone or replace it with a 3 pin mini XLR connector Audio input pinout Pin 1 shield Pin 2 audio inphase Pin 3 audio A positive supply voltage of 6 volts for condenser microphones is available on pin 2 Please note that AKG cannot guarantee that the PT 4500 bodypack transmitter will work perfectly with products from other manufacturers and any damage that may re sult from such use is not covered by the AKG warranty scheme e Plug the mini XLR connector 1 on the cable of your microphone or on the MKG L in strument cable 2 into the audio input connector 3 on the bodypack transmitter Open the battery compartment door 1 2 nsert the two supplied batteries into the battery compartment aligning the batteries with the polarity symbols inside the battery compartment If you insert the batteries the wrong way the transmitter will not be powered 3 Close the battery compartment door 1 e Alternatively to the supplied dry batteries you may use the optional BP 4000 battery pack from AKG The BP 4000 fits into the battery compartment in the correct orienta tion only So you cannot insert it the wrong way e Never use standard rechargeable batteries These
13. er of the currently active Frequency Group will start flashing 4 To select the next higher Frequency Group number turn the setup switch briefly to the right To select the next lower Frequency Group number turn the setup switch briefly to the left 5 Having selected the desired Frequency Group push the setup switch briefly CH and the number of the currently active Channel start flashing Each Channel rep resents one factory preset intermodulation free carrier frequency 6 To select the next higher Channel number turn the setup switch briefly to the right To select the next lower Channel number turn the setup switch briefly to the left 7 Having finished your settings push the setup switch briefly This brings up the following SAU E I 8a If you want to save the selected carrier frequency push the setup switch briefly The setting will be saved in memory and the display will change as follows Ge HAME RR 044000 FREQ GAIN LL 8b If you d rather not save the selected frequency briefly turn the setup switch to the left or right This brings up the following screen FREQ E SAUE m Push the setup switch briefly The transmitter will stay tuned to the original frequency 28 Www americanmusical com 9 To switch the transmitter into LOCK mode switch the transmitter OFF and back ON in LOCK mode referring to section 3 4 2 1 To move from the Preset to the Frequency menu
14. es de modifications Ci riserviamo il diritto di effettuare modifiche tecniche Nos reservamos el derecho de introducir modificaciones t cnicas Especifica es sujeitas a mudan as sem aviso pr vio Printed in China P R C 02 08 9100 U 12760 Www americanmusical com PT 4500 Www americanmusical com BP 4000
15. ical com The display will change as follows SAU E H Ka DAIN e To save the new setting push the setup switch briefly The display will show your new gain setting in dB and the GAIN label will be flash ing e H you d rather not save your setting turn the setup switch briefly to the left or right The display will change to SAVE N Push the setup switch briefly The display will revert to the original setting with the GAIN label flashing 3 To set input gain again repeat steps 1 and 2 above 4 To return to LOCK mode push and hold the setup switch for approx 1 5 seconds 1 From the Gain menu turn the setup switch to the left and hold until the display changes 3 8 2 Using as follows Automatic Gain Mode Hukos 2 Push the setup switch briefiy The message gt tESt lt will start flashing on the display 3 Talk or sing into the microphone as loud as you can The transmitter will automatically set the optimum input gain The display indicates the audio level by short lines The peak level is indicated by a heav ier line that will remain fixed for approx 2 seconds 4 Push the setup switch briefly The display will show SAVE Y e To save the new setting push the setup switch briefly The display will show your new gain setting in dB and the GAIN label will be flash ing e H you d rather not save your setting turn the setup switch briefly to the left or right The display will cha
16. is in SILENT mode 2 Display The transmitter provides a five line display Preset Name Frequency Group Channel Preset menu only Alphanumeric display of the currently active value or battery capacity in hours Operating condition measurement unit Battery capacity or audio level bar graph Parameter to be adjusted The display indicates all transmitter parameters Carrier frequency in MHz or as a Channel of a Frequency Group Audio input level Battery status and remaining operating time Error messages Setup menus Frequency Preset Gain The backlighting of the display comes on every time you actuate the setup switch and will switch off after approximately 10 seconds 3 ON OFF button A short push approx 0 6 seconds will switch power to the transmit Refer to fig 1 ter ON and activate the display 2 and status LED 1 The transmitter will be ready to operate after approx 7 seconds A long push approx 2 seconds will switch power to the transmitter OFF The ON OFF button is recessed for protection from unintentional actuation 4 MUTE switch Sliding the MUTE switch toward the outside of the transmitter arrow will mute the audio signal The status LED 1 will change to red Since power and the RF section remain ON no unwanted noise will become audible from the sound system when you mute the audio signal To switch the audio signal back on slide the MUTE switch toward
17. lows you to connect the optional Remote Mute switch 9 Antenna Permanently connected flexible antenna 10 Battery conmpartment door 11 Frequency sticker Sticker attached to the transmitter rear panel indicating the avail able carrier frequency range and approval data 12 Battery compartment accepting the two supplied 1 5 V AA size batteries or the optional BP 4000 battery pack 13 Belt Clip for fixing the transmitter to your belt You can connect the following microphones to the audio input of the PT 4500 e CK55 L C 417 L C 520 L C 555 L e C516 ML C 518 ML C 519 ML e The MKGL instrument cable from AKG lets you connect an electric guitar electric bass or remote keyboard to the bodypack transmitter For further details refer to the respec tive AKG brochures or visit www akg com Www americanmusical com e Prior to setting up your WMS 4500 check that the transmitter and receiver are tuned to the same frequency referring to section 3 6 and the receiver manual e We recommend setting all channels to the same Preset and the same Group In the following sections flashing characters are identified by angle symbols gt and lt All values shown are examples of available settings CED short push on the setup switch __ Turn the setup switch briefly to the left Turn the setup switch briefly to the right Turn the setup switch briefly to the left or j right The PT 4500 bodypack transmitter has be
18. may damage the transmitter if the charging contacts are shorted and will provide no remaining battery life in dication AKG will accept no liability for any damage resulting from the use of standard rechargeable batteries 1 LOCK mode The transmitter transmits the microphone output signal to the receiver All Important Note Symbols 3 1 Connecting a Microphone Instrument Refer to fig 2 Important 3 2 Inserting Batteries Refer to fig 3 Note Important 3 3 Operating Modes 29 26 Important 3 4 Powering Up Important A 3 4 1 Powering Up in SILENT Mode Refer to fig 1 3 4 2 Powering Up in LOCK Mode Refer to fig 1 Www americanmusical com adjustment functions are electronically locked to prevent parameters from being read justed unintentionally during a performance or lecture ACTIVE mode The transmitter transmits the microphone output signal to the receiver All controls are active You can check all transmitter parameters and set the carrier fre quency refer to section 3 6 and input gain refer to section 3 8 SILENT mode Power to the transmitter is ON but no RF signal is transmitted The Status LED remains dark You can check all transmitter parameters and set the carrier frequency refer to section 3 6 and input gain refer to section 3 8 We recommend setting the carrier frequency in SILENT mode only This is the only way to make sure you won t go on air
19. nd ACTIVE mode push and hold the setup switch for approx two seconds In LOCK mode the LOCK label will be shown on the display Note The transmitter is on the air in ACTIVE mode too Remember though that settings may 32 change if you inadvertently actuate the setup switch The transmitter will revert to LOCK mode after about 15 minutes PT 4500 Www americanmusical com To toggle between LOCK or ACTIVE mode and SILENT mode Switch power to the transmitter OFF Hold down the ON OFF switch for approx 0 6 seconds to enter LOCK mode OR hold down the setup switch for approx two seconds to enter SILENT mode To mute the microphone slide the MUTE switch 4 to the MUTE position The status LED 1 will change to red To switch the microphone back ON slide the MUTE switch 4 to the ON position The status LED 1 will change to green The optional Remote Mute Switch allows you to mute the transmitter if it is mounted in a po sition where it is difficult or impossible to use the on board MUTE switch 1 gt 3 4 Plug the cable 1 on the Remote Mute Switch into the REMOTE MUTE jack 2 on the transmitter Put the Remote Mute Switch in a jacket or shirt pocket or use the belt clip to clamp the Remote Mute Switch on the belt To mute the microphone press the button on the Remote Mute Switch The button will lock and the status LED will change to red To switch the microphone back on press the but
20. nge to SAVE N Push the setup switch briefly The display will revert to your original setting with the GAIN label flashing 5 To set input gain again repeat steps 1 through 4 above 6 Toreturn to LOCK mode push and hold the setup switch for approx two seconds 31 Www americanmusical com 4 1 Status Screens and Setup Menus 4 1 1 LOCK Mode In LOCK mode four status screens are available 142 BOD LOCK MHZ MUTE BATT 7 1 Frequency screen Carrier frequency in MHz battery capacity bars The MUTE Preset screen comes up only if at least one Preset has been saved Carrier frequency as Subchannel number within a Frequency Group battery capacity bars f the microphone is ON the MUTE label is off label appears if the micro phone is muted I dm LOCK wur LOCK Gain screen Input gain in Battery screen Battery dB capacity in hours and as bar graph If the micro phone is ON the MUTE label is off To scroll through the status screens in the order shown above turn the setup switch briefly to the right To step through the above screens in reverse order turn the setup switch briefly to the left 4 1 2 ACTIVE To call up the setup menus described in sections 3 4 through 3 8 in the order shown and SILENT Modes below turn the setup switch briefly to the left Preset menu Frequency menu Battery screen Gain menu 4 2 Selecting Modes To toggle between LOCK mode a
21. nm nnn 33 4 5 Microphone Technique E 33 4 5 1 C417L CK55L Lavalier Microphones AAA 33 4 5 2 C 420 L C 444 L Head worn Microphones AAA 33 4 6 Multichannel Systems E E e EE ae 5 Cleaning een 34 6 Error EL 30 7 Specificatlons e een 9f 20 Www americanmusical com 1 Do not expose the equipment to direct sunlight excessive dust moisture rain me 1 1 Safety chanical vibrations or shock 1 Be sure to dispose of used batteries as required by local waste disposal rules Never throw batteries into a fire risk of explosion or garbage bin 1 2 Environment 2 When scrapping the equipment remove the batteries separate the case circuit boards and cables and dispose of all components in accordance with local waste disposal rules 3 The packaging of the equipment is recyclable Dispose of the packaging in an appropriate i container provided by the local waste collection recycling entity and observe all local W legislation relating to waste disposal and recycling FCC Statement This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 74 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installa tion This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance
22. red If the microphone is active MUTE will not appear and the status LED will be lit green e Push and hold the ON OFF button 3 until the message OFF appears on the display 3 5 Powering Down 2 all modes The display goes dark and power to the transmitter is OFF Refer to fig 1 e f you are not sure what carrier frequency the transmitter is tuned to place the 3 6 Setting the Carrier transmitter into SILENT mode following steps 1 and 2 below In SILENT mode Frequency you can check and adjust the carrier frequency and input gain without transmit ting a radio signal Ad important 1 If the transmitter is ON switch it OFF 2 Push and hold the setup switch until the display backlighting comes on The display will first show the battery capacityin hours and as a bargraph and then the currently selected carrier frequency in MHz As the backlighting goes out the display changes as follows Hire bn The transmitter is now in SILENT mode and the display shows the Preset menu 3 You can either select one of the Preset Channels from the Preset menu section 3 6 1 or set the carrier frequency in 25 kHz increments in the Frequency menu section 3 6 2 The spacing between Preset frequencies prevents any mutual interference A Preset comprises one or more Groups of carrier frequencies Group numbers are shown 3 6 1 Preset Menu under the GRP label Carrier frequencies are also called Channels whose numbers are in
23. requency that is not allocated or coordinated and risk jam ming some other radio service or active radio mic The backlit LCD screen indicates all important parameters the current battery capacity and the remaining time before the battery will be dead The transmitter can be powered from two standard AA size dry batteries or the optional BP 4000 battery pack from AKG e Never use standard rechargeable batteries These may damage the transmitter if the charging contacts are shorted and will provide no remaining battery life in dication AKG will accept no liability for any damage resulting from the use of standard rechargeable batteries 1 Status LED This bicolor LED indicates the current operating status of the transmitter Green The output signal of the microphone or instrument is fed to the transmitter which transmits the audio signal to the receiver Red he Status LED is lit red if the audio signal is muted while the RF section remains active This prevents un wanted noise from becoming audible in the signal chain PT 4500 Www americanmusical com approximately 60 minutes before the batteries or BP 4000 battery pack wil be dead and while the transmitter recalls the carrier frequency from memory after you turned power to the transmitter on Unless you muted the audio signal the status LED will change to green as soon as the frequency has been recalled while the display shows an error message Dark The transmitter
24. ton again The status LED will change to green In LOCK mode the display constantly indicates the current battery capacity as a string of bars below the frequency readout If the BATT label starts flashing a dash appears instead of the bars and the status LED changes to red replace the batteries or charge the AKG BP 4000 battery pack as soon as possible You can check the remaining battery capacity at any time by turning the setup switch briefly to the left or right one to three times depending on the currently active screen The battery capacity will be displayed in hours and as a string of bars jl 2 Fix the microphone to the H 40 1 lavalier clip or H 41 1 tie pin referring to the micro phone s instruction manual Clamp the microphone on your clothing as close as possible to your mouth Remember that gain before feedback will be the higher the smaller the distance be tween the microphone and the mouth Make sure to aim the microphone at your mouth Refer to the user s manual of the respective microphone for instructions on how to use head worn microphones If reception on the selected carrier frequency is poor use Automatic Frequency Selec tion FREQ gt CHANNEL gt AUTO on the receiver to find the nearest clean Channel within the selected Frequency Group Should you find no clean Channel useAutomatic Frequency Selection FREQ gt GROUP gt AUTO on the receiver to select a different Frequency
25. uenc y Selection on the receiver to select a different Frequency Group within the same Preset and selecet a new fre quency for each transmiter and receiver Important e Do not operate two or more wireless channels on the same frequency at the same time and location This would cause unwanted noise due to radio interference 3 8 Setting Input Gain You can set the transmitter input gain either in SILENT mode or in ACTIVE mode We rec ommend setting the input gain in ACTIVE mode because you can switch to LOCK mode di rectly without having to power down first 1 To move from LOCK mode to ACTIVE mode push and hold the setup switch for approx two seconds The display will change as follows CPEE 2 Turn the setup switch briefly to the right once The display will show the current input gain in dB and the GAIN label will be flashing i2 3 Push the setup switch briefly The currently selected input gain value in dB will be flashing on the display 4 Setthe audio section input gain either manually continue with section 3 8 1 or in Au tomatic Gain mode continue with section 3 8 2 3 8 1 Setting Gain Manually 1 To increase the gain value by 1 dB turn the setup switch briefly to the right To decrease the gain value by 1 dB turn the setup switch briefly to the left The readout 00 will be followed by Auto refer to section 3 8 2 2 Push the setup switch briefly 30 PT 4500 Www americanmus
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