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CHANGING MODULES 

 
The five factory installed preamp modules are located directly under the Quick Access

TM

 

module system plate on the top of the amp. Changing modules is quick and easy. 
Dramatic tone changes are possible just by rearranging your present module 
configuration. To replace or rearrange the modules, just follow these easy steps. 
 
TO REMOVE: 

1.    UNPLUG YOUR AMPLIFIER

 

from the power outlet. 

2.  Turn the Quick Access plate screws counter-clockwise - they 

will POP UP 

3.  Remove the plate. 
4.  Looking down inside the amplifier, firmly grasp the module you 

want to replace by its handle and lift slowly. When the module 
is free from its receptacle, continue to lift upward. You may 
have to turn the module sideways to clear the module opening. 

 
 TO REPLACE: 

1.     MAKE SURE THE AMPLIFIER IS STILL UNPLUGGED.

 

  

2.    Choose the module you want to install and grasp by its handle.

 

3.  Insert the module to be installed through the Quick Access 

module system opening. It may be necessary to turn the 
module sideways before it will fit through the module opening. 

4.  Align the module plug to be installed over the receptacle in the 

module position you have chosen. 

5.  Slowly insert the module into the receptacle. Apply

 

moderate 

pressure until you feel the module is seated snugly. 

6.  Repeat steps 2 thru 5 for each module you want to replace/ 

rearrange. When you have finished changing modules, double-
check all modules to ensure they are still snug in their re-
ceptacles. 

7.  Align the module system plate with the holes in the top of the 

amplifier cabinet and then secure. 

8.  Make sure that the Volume and Variable Power controls are at 

a low setting and Standby switch is place in the ON position. 

9.  Plug the power cord from the amplifier into the 110-120Vac wall 

outlet and place the Amp Power switch in the ON position. 

10. After a one-minute warm-up, flip Standby switch on the rear 

panel to the "ON" position and you're ready to play. 

 

 
 
 
 
 
 
 
 

Содержание Convertible Combo

Страница 1: ......

Страница 2: ...t s in your head To provide that versatility many unique and exclusive features are built in This manual will show you the easy way of getting a wide variety of great sounds just by properly setting up the amp Enjoy it If you have any comments about the design of your amp I d like to hear from you If you have any ideas for modules or other related products please write me at the address below Than...

Страница 3: ...box and packing material will be necessary for shipment These are carrier approved packing materials and they will insure safe transit back to the factory Specifications for 100 watt Convertible Amps Combo Head Weight 57 lbs 42 lbs Cabinet Dimensions 19 3 4 h 10 15 16 h 18 25 32 w 21 25 32 w 11 3 8 d 11 1 16 d Power Requirements 120 volts a c U S models Power Consumption 480 watts at full rated ou...

Страница 4: ...ge 4 5 Rear Panel Controls Page 6 7 Module Arrangements Page 8 9 Preamp Modules Page 10 11 Changing Modules Page 12 Tubes Preamp Page 13 Power Page 14 Load Resistor Plugs Page 15 Trouble Shooting Page 16 18 Blank Module Arrangements Page 19 20 ...

Страница 5: ...p be 10 to 20 times higher than the pick up output impedance to avoid excessive loading UNIOUE DESIGN PICKUPS LOW IMPEDANCE PICKUPS To optimize signal to noise ratio input impedance should be fairly low typically 100 to 10k ohms Try the lOk330pf load resistor plug for great tone and low noise PIEZO TRANDUCERS built in to acoustic guitars To avoid loading down Piezo pickups the input impedance shou...

Страница 6: ...n counterclockwise decreases distortion Like all of the preamp controls on this amp each channel is independent You can have a clean setting on one channel and a distorted setting on the other channel 5 MASTER VOLUME This control sends the signal volume from the preamp to the power amplifier For the cleanest signal turn the Master Volume up high and keep the Overdrive low but not off For the dirti...

Страница 7: ...ls let you change the low end response of your amp Each is a low pass passive filter that can reduce the signal level 0 15 db Turning the dial clockwise increases the low end response 9 REVERB These controls let you set the amount of reverberation you want in your sound Turn the reverb control clockwise to increase the amount of reverb and counter clockwise to decrease Some players prefer no rever...

Страница 8: ...nd distortion that is heard only on small amplifiers Variable Power is not like typical preamp overdrives The Variable Power circuit actually controls the cutout stage of the amp When the Master Volume control is set low you will notice little or no change from the Variable Power control because you are asking the amp to give you very little wattage The higher you set the Master Volume control the...

Страница 9: ...e under Fuse Failure for troubleshooting tips 2 ON OFF ON POWER SWITCH This switch is designed to turn your amp on and to allow you reverse the a c polarity If you re picking up 60 hz hum from the wall current put the ON switch in the other ON position If you re using other equipment like a P A and you get a shock when touching the microphone place the ON switch in the other ON position to elimina...

Страница 10: ...s directly into effects and plug the effects into the guitar input jacks on their amps With the Convertible amp you can plug your guitar into the guitar input jack and run your effects through the Effects Loop The Send Level control lets you match the Effects Loop output to the input of your effects When the level is set too low too much hiss will come through the speaker and the volume will be lo...

Страница 11: ... right increases the control of the speaker the sound is crisper and tighter Low damping turning the control to the left decreases the control of the speaker the sound is looser and fatter sounding with slightly more presence There is no recommended setting because only you can tell what s best for the sound YOU want to produce This control is effective ONLY when the speaker is connected to the Va...

Страница 12: ...ositions 1 3 and 5 In this section you will find a number of different module arrangements and the sound produced from each To replace or rearrange modules follow the steps under Changing Modules Here is the way modules are arranged when Convertible amps are shipped Below are just some of the module arrangements you can try for different sounds Your dealer has a wide selection of modules for you t...

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Страница 20: ...s handle 3 Insert the module to be installed through the Quick Access module system opening It may be necessary to turn the module sideways before it will fit through the module opening 4 Align the module plug to be installed over the receptacle in the module position you have chosen 5 Slowly insert the module into the receptacle Apply moderate pressure until you feel the module is seated snugly 6...

Страница 21: ...tion of the two modules Classic Hi Gain For example Classic Normal Presence Just take the two Classic modules and switch their positions If the second Classic module s tube does not have microphonics you ve solved the problem 3 Polish 1 2AX7 tubes are constructed differently than the Tungsrams Although Polish tubes are noisier and harder sounding they are less subject to microphonics Radio Shack a...

Страница 22: ...reduces hum and noice especially noticeable when playing quiet passages and in the recording studio You ll notice a little label attached to the base of each tube that shows current draw When you replace your output tubes make sure to ask for matched sets to keep your amp sounding like new If you re transporting your amp often and subjecting it to rough handling there are other power tubes that wi...

Страница 23: ... at 1 kHz 500k Capacitance in picofarads 3300pf Resistance in ohms 10k Sound Effect Use with acoustic pickup to enrich tone 1 meg 0 1 meg Will make tone slightly smoother sounding Other plugs that you can build yourself include Load Input Value at 1 kHz 26k Capacitance in picofarads 01 Resistance in ohms 10k Sound Effect Slightly rolled off high end Use in bright sounding room or with pickups that...

Страница 24: ...ltage 3 Verify power source with something you know works 4 Defective ON OFF power switch 4 Return unit to dealer or factory for repair No sound coming from speaker s No audible amplifier hum 1 Amplifier in standby 1 Place standby switch in ON up position 2 Master Volume and or Overdrive control levels set too low 2 Increase control level setting s to 2 and listen 3 Speaker output plug disconnecte...

Страница 25: ...ntrol level setting 2 Defective first stage preamp module 2 Replace module with one known to operate properly 3 Speaker output wires to amplifier shorted 3 Replace speaker cord 4 Pickup instrument or connecting cable may be defective 4 Substitute cable and instrument with one you know operates properly 5 Defective speaker s 5 Verify speakers operate properly by connecting speaker plug to speaker o...

Страница 26: ...r for repair 3 Defective internal channel switching in amp 3 Return amp to dealer or factory for repair Feedback ringing 1 Master Volume and or Overdrive controls set too high 1 Lower levels 2 Too many high gain type modules used 2 Use lower gain modules or play at lower levels 3 Microphonic pickups 3 Wax pot pickups 4 Microphonic tube sound 4 Use FET module in first position It is possible to use...

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