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I have owned 3 Carver magnetic field power amps in the last 15 years and every one has developed the same problem - one channel cutting out at low and moderate volume ranges. Twisting the volume control back and forth solves the problem temporarily. It seems to this only while in the tuner mode of operation (or maybe it's just that I never listen to CD's or DVD's at low volume :) Any solutions or suggestions greatly appreciated - Leo

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  • dsnr Sep 16, 2008

    This is the receiver model MXR 130

  • dtaylor91 May 11, 2010

    Hi, which model Carver are we talking about? One of the receivers?

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Ok, the MXR-130 has four power resistors on the tuner board that get EXTREMELY hot. The power connector for the tuner board is right under those resistors. The heat, constant expansion and contraction, and tarnish from heat may have worked the connector partially loose, or started some corrosion. 
If you look through the top of the receiver, you'll see a big board that fills up most of the right side. That's the tuner. At the bottom (or front) left corner of that board, you'll se the resistors and connector. If it's like every other MXR 130 I've seen, it'll be noticeable that the board is quite toasted in that spot.
Cleaning that connector, and making sure it is seated firmly, may solve the problem. If not, let me know.

Posted on Sep 17, 2008

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However, should you get a multi-channel amp for the 901's you will be limited to using only 901's on it as the required Active Equalizer would affect all speakers attached to the amp, and conventional speakers would not sound right and could possibly be harmed by it's drastically-altered frequency response. Since using the Tape Monitor on modern DSP Receivers disables their digital inputs, that would limit what you could listen to, should you later decide to go with Cable Box, DVD, SACD, DVD-Audio, Blu-Ray, DTS etc.

* There are no some multichannel receivers out there that allow separating the preamp-amp circuitry for each channel to allow for differences in speaker processing. I think Marantz had one.

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You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W). Run it with the Active EQ between the receiver Front L&R Pre-Outputs ** and the 901's amp channels.

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Write off the Tape Out as an input if you use it to extract the Front L&R channels. DO NOT monitor it or you'll chop the 901's out of the signal path AND kill any digital source audio in the receiver.

---------

So to sum it up, I think you should start with a powerful, clean amp with few bells and whistles for the 901's and maybe later add a multichannel receiver with all the magicfor source control, DSP and to drive the other channels.




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http://www.sherwoodusa.com/pdf/RD-6500(English).pdf

On page 6 of the manual it states you should use a powered subwoofer and the unit provides a sub output on the rear panel for it. The message from the amp kicking out is that you're not going to get away with your workaround.

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