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I need a schematic for a Proton 1100 Preamp. - Audio Players & Recorders

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I don't believe that these are available electronically. What is the problem that you are having? Perhaps we can work you through the repair.


Posted on Jun 29, 2009


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Posted on Jan 02, 2017


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How do you connect a proton d540 amplifier to a Marantz sr45 ?

Why? The Marantz receiver already has an amp and the Proton is an integrated amp. But if you want to use the Proton as a preamp with the Maranyz you could remove the jumpers on the back of the Proton then connect RCA cables from the Proton's Pre Out to the Marantz's Tape In but I really don't see why.

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I need to find a schematic diagram for a K&K Sound Systems Dual channel Pro preamp.

You'll probably only find that at the manufacture. You can try a Google search as well. What is the issue with the preamp? If you need more assistance, or would like to inquire about about repairing this, please contact me at Thank you..

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I'm looking for a schematic diagram for a K&K Sound Systems Dual channel Pro preamp.

Hi the only way to obtain your schematic is to contact directly the manufacturer. Anyway go see this webpage in hope you'll get some info. Have a nice day

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Where can I get a mic preamp schematic

From the manufactor of that particular brand preamp.

Jun 30, 2014 | Music

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There are some burnt carbon resistors beyond recognition on a peavey tnt bass I need the schematic diagram

Try these schematics:

Scroll down to "Get Manual" at the web page and click on it to download.

Please note that on the first schematic above, the power amp schematic is way down beyond the parts list and layout of the preamp section... keep scrolling. ALSO the powoer amp shows a real WIERD connection where the output transistors drive against ground and the center tap of the power supply transformer for the power amp portion then bounces around with the audio output... that is a wierd connection but it is possible.

May 23, 2011 | Peavey Max 126 10 Watt Combo Bass...

2 Answers

I've owned a Roland AC-90 acoustic guitar amp for 8 months and am having problems with the XLR mic preamp. There is some very low-level output with the volume fully advanced, and with an external...

I don't have the exact schematic... however sometimes they have RF bypass capacitors to ground on the balanced input lines and one side gets shorted. The schematic I do have is for an AC100. It shows a rather unconventional input circuit. You can download it here and it MIGHT be close to your unit:

I note that this unit does NOT have Phantom power so you CANNOT use a condenser type mic with it unless you use a preamp with Phantom power... Maybe that is the problem?

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Sony Reel to Reel preamp board.


Did you ever get your schematic? I recently got the Model 260 and it has the original owner's manual. I could try scanning the page for you, if you still need the info (if you think that would help you).


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1 Answer

Does DEH- 1100 have any preouts?The Radio is installed in my car so I could not see the back if there is any

Yes, the Pioneer DEH-1100 has one set of preamp outputs on the back. They are located on the far left side (facing the rear) near the bottom of the unit. Left channel is on top.

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1 Answer

Proton LCD Power supply

Here is a link for you! The problem could be capacitors with high ESR values won't provide adequate pulse energy transfer! Do you have any freeze spray? Spray the caps, then retry to see if the PS starts up. An ESR meter would be a good tool for future use!

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