You could bridge them.
http://www.circuitbasics.com/complete-guide-to-build-a-10w-amplifier-with-the-tda2003/
http://www.circuitbasics.com/complete-guide-to-build-a-10w-amplifier-with-the-tda2003/
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#272
Tubes and Hybrids / Re: Capacitor identification Gibson Maestro GA-1TVT
May 04, 2018, 09:46:57 PM
The 'flattened' caps are probably ceramic disc capacitors.
Probably for the trem circuit.
Hate to say it but you are going to have to draw a layout diagram.
Follow the schematic.
Probably for the trem circuit.
Hate to say it but you are going to have to draw a layout diagram.
Follow the schematic.
#273
Amplifier Discussion / Re: Peavey Rage 158 - any mod to fit delay after dirty channel?
April 27, 2018, 12:58:25 PM
There is a way but not an easy one.
You would have to refit the CD input jack as a Send jack.
Plus a Return jack will have to be installed with a normally closed contact so the signal will pass without a pedal installed.
That and you will have to cut a copper trace between R21 & R22 (100K pad resistors for the Cd input).
You would have to refit the CD input jack as a Send jack.
Plus a Return jack will have to be installed with a normally closed contact so the signal will pass without a pedal installed.
That and you will have to cut a copper trace between R21 & R22 (100K pad resistors for the Cd input).
#274
The Newcomer's Forum / Re: Marshall 5010 Needs Help
April 24, 2018, 11:31:29 AM
Can you post the picture?
#275
The Newcomer's Forum / Re: Marshall 5010 Needs Help
April 21, 2018, 09:03:55 PM
I believe that TR2 is the incorrect transistor.
The schematic calls for a BC212, which is a PNP transistor.
Your notation states that a BC182 is installed in that position.
BC182 is an NPN transistor.
Also, I do not know what is going on there at the LTP (TR4 & TR5) but those two transistors should be the same type & hopefully from the same batch so that there characteristics match.
The schematic calls for a BC212, which is a PNP transistor.
Your notation states that a BC182 is installed in that position.
BC182 is an NPN transistor.
Also, I do not know what is going on there at the LTP (TR4 & TR5) but those two transistors should be the same type & hopefully from the same batch so that there characteristics match.
#276
The Newcomer's Forum / Re: Orange Crush 12 repair
April 18, 2018, 11:28:24 AM
If the control is marked 'B250K', then it is a linear 250K control.
#277
Amplifier Discussion / Re: Seeking Roland Micro Cube Schematic
April 14, 2018, 01:24:23 PM
Roland will not sell you the switch?
#278
Amplifier Discussion / Re: Ss guitar amp volume ouput weak reverb screeching when turned up
April 12, 2018, 12:48:17 AM
What have you done so far to isolate the problem?
#279
The Newcomer's Forum / Re: My epiphone amp is highly collectable i have never seen another ea600rvt maxima
April 10, 2018, 11:09:44 AM
"Up to now, all Epiphone amps had been the tube variety, but by 1966 at least four solid state models were introduced. The EA100, EA101, EA550RVT Superba and EA600RVT Maxima only lasted one year. The Maxima, came in at 100 watts and boasted four 10" speakers in two separate cabs."
http://archive.gibson.com/en-us/Lifestyle/ProductSpotlight/GearAndInstruments/epiphone-amplifiers-619/
http://archive.gibson.com/en-us/Lifestyle/ProductSpotlight/GearAndInstruments/epiphone-amplifiers-619/
#280
The Newcomer's Forum / Re: Orange Crush 12 repair
April 08, 2018, 11:54:59 AM
It was never stated exactly what is wrong with amp.
"Doesn't work" does not lead to the opamp.
"Doesn't work" does not lead to the opamp.
#281
Amplifier Discussion / Re: Amplifier section of a Farfisa Mini Compact
April 06, 2018, 04:42:27 PM
Not being able to see the whole schematic I can only venture a guess.
The voltages on A128 are all the same.
That tells me that the device is bad.
The voltages on A128 are all the same.
That tells me that the device is bad.
#282
The Newcomer's Forum / Re: Marshall 5010 Needs Help
March 30, 2018, 11:53:18 PM
To me, that amp appears factory.
Yes, right down to the bad solder joint on the bridge rectifier.
Yes, right down to the bad solder joint on the bridge rectifier.
#283
The Newcomer's Forum / Re: Orange Crush 12 repair
March 27, 2018, 01:01:03 AM
Sure you can socket the ic.
First off, I would prove that the ic is bad.
First off, I would prove that the ic is bad.
#284
Schematics and Layouts / Re: Unicord Stage 65 schematic and layout
March 26, 2018, 12:47:46 AM
Nice!
#285
The Newcomer's Forum / Re: Use small amp as overdrive for another amp
March 24, 2018, 08:30:42 AM
" 30 watt Gorilla amp"
Can you provide the actual model #?
Can you provide the actual model #?