Question about Carver PM950 Amplifier

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Carver stereo amp will only play

If the CD player is plugged in to the { main in } and there is no volume control what so ever

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Power amps without built-in volume controls are always running full out. There is usually some form of preamp, control amp or receiver before the amp to provide source selection and volume (*) as well as any other signal processing.

* If you think about it, your CD player (or any other source) is also running at full volume unless it has an output level control. Hence, the volume knob actually LOWERS the volume from maximum rather than raising it from minimum.

Posted on Mar 31, 2010

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That should be normal. The main inputs usually go directly to the power amp. If you want volume control, put a mixer with faders beween them... Radio Shack used to have some inexpensive mixers.

Posted on Jul 29, 2009

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You need to run RCA cables from the CD player to the CD or AUX input on your amp / receiver unit. If you have a standalone amp, you need some way to control the volume. Basically, if you have a volume control on the front of your amp, you're OK. If not, you should also have a preamplifier that the CD player feeds first.

From the amplifier, then, a single pair of speaker outputs feeds a single pair of inputs on your speakers. The reason for two jack sets on the speakers is for "bi-wiring" or "bi-amping", not necessary for basic stereo reproduction.

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There's good news and bad news for the multichannel hopes you must be harboring.

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Tech data sheet with diagrams:
http://www.bose.com/pdf/professional/802III_techdata.pdf

In a nutshell, the controller would go between a preamp Stereo OUTput and a dedicated amplifier INPUT. You can't use Bose 901 or 802 EQ in a multichannel setup without separate amps for the Bose speakers.

The Bose 802/901 family uses full-range speakers instead of traditional woofer/tweeter combinations, so they compensate for the response limitations at the extreme frequencies by using severe electronic modification of the program material. Hence, they are a system, functionally inseparable, but the results are outstanding. Consequently, they need a dedicated amplifier so they alone get the processing provided by their electronic component.

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You should be able to draw off the (assumed) Front L&R channel preamp signal from the MD/CD-R or DVD-R Audio Out (REC) jacks (*). Run that to the Preamp In (or whatever it's labeled on the Bose EQ/Controller). DO NOT run a return RCA pair back to the Receiver as Bose-processed signals will not play well with non-Bose speakers. (*) Run the Output of the Bose EQ/Controller to a powerful separate amp for the Bose 802/901's. I use two channels on a Carver multichannel AV-406 amp but a stand-alone Carver MT-200T also works well. A good clean 100 watts/channel should suffice at home.

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1 Answer

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