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Carver pm-1.5 power amp has constant buzz in speakers

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  • dtaylor91 May 11, 2010

    Hi. Both channels, same volume in each?

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Carver pm-1.5 power amp has constant buzz in speakers, try removing ground jumper on back

Posted on Sep 10, 2010

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I have acarver receiver mxr 130 receiver no sound output to speakers but desplay is lit


I know this is a old post but check all your connections.

There is a common issue with a lot of these recievers that have no output and typically it is the protection relays out to the speakers that fail. There is a person on ebay that sells these replacement relays. link is here. thanks http://www.ebay.com/itm/221121502953?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

Jul 25, 2013 | Sunfire Theater Grand Processor Iv Tgp-iv...

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I have the following equipment and am going crazy trying to figure out how they get connected together. I also have the Carver Multi CD player and Carver Cassette Deck which I was able to connect to the...


Get a separate amp for the 901's and the rest falls into place.

1,2, 5) Place the 901 Active EQ between the pre/main front OUT of the receiver and the TFM-55X. Attach the 901's. Keep track of the jumpers you remove from the receiver. Or replace the jumpers with RCA splitter cables so you still have pre/main connection but can share the output with the TFM.

3) Pinnacle subwoofer (self-powered?) to the subwoofer out of the receiver.

4) Bose (AMS???) 5. As surrounds on the receiver. Place the sub module toward the rear so it mates sonically and directionally with them.

What? No center speaker? I'd get something more robust with bass capabilities, like a pair Bose 301 series 1's because the tweeters face in one direction only.

Except for the amps and the cube stuff that is essentially what I have. 6.1 with full-range speakers everywhere.

Aug 31, 2010 | Onkyo TX-SR803 Receiver

2 Answers

Constant Buzz coming from SX-255r


Power source harmonics. Or its power supply regulation. Check also if input line is touching something.

Apr 03, 2009 | Pioneer SX-255R Receiver

1 Answer

Connecting NAD 314 Receiver\ preamp to Carver M-500t to speakers


Dear Tim,
Yes, you can connect your NAD as a preamp to the Carver power Amp.

Connect the NAD's pre-out to the input of the Carver Power Amp. You can then connect the Klipsch speaker to the Carver. Set the gain control on the NAD.

Now you should be able to control all the input and the main volume control from the NAD.

Mar 12, 2009 | Onkyo TX-SR803 Receiver

1 Answer

Looking for a good amplifier


Any 2-channel (or greater) receiver or integrated amp with at least one Tape Monitor loop; or any separate amplifier - will work. I would look fror one with true > 100 watts per channel, all channels driven, 20-20000kz + a few dB, with less than 0.5% Total Harmonic Distortion (in other words clean and powerful) should suffice. Specific brands don't matter. I'm partial to old Carver amps.

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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.

However, having a 901-based multichannel setup myself, I would highly recommend getting the Full Monte for video listening (below)...

In that case a separate stereo amp for the 901's would work. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers.

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.

** Front Pre Out (or one of your analog Tape Outs) >>> Bose EQ Amplifer IN, then
Bose EQ Amplier OUT >>> new amplifier IN.


Attach the 901's to the new amp, set its volume to Max and run through your receiver's speaker level setup.

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.

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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.




Jan 05, 2009 | Onkyo TX-DS747

1 Answer

Carver tfm-35x power amp light replacement


I just picked up the same amp, a Carver TFM-35x, with the same problem, the bulbs that light up the meters are burnt out. They aren't hard to replace, but I didn't know what bulb to use. I found out today that you need to use 12 volt, .15 amp bulbs (150 milliamp). And it needs to be an axial-type bulb.

Jun 21, 2008 | Audio & Video Receivers

1 Answer

I need a 48" replacement ribbon for a Carver AL 111 speaker can you help locate one please


The system is a high end sub woofer w/amp. I would definitely suggest returning unit to Carver for proper sevice. A cheap or substitute repair could possibly degrade performance and damage the amp

Apr 24, 2008 | Audio & Video Receivers

2 Answers

Home theater system protection kicks out


Nice write-up.

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.

I would advise you to purchase a nice amplifier (2-channel bridgeable or single channel) for the subwoofer. That way you'd be sending only LFE signals and your receiver has provisions for adjusting its volume relative to the rest of the channels. I use a nice 5-channel Carver for my 3 subs and both Rear Surrounds.

On eBay I see what I would get if I were you - a Carver M-200T (120W x2; 300W bridged). I have one.

http://cgi.ebay.com/Carver-Magnetic-Field-Power-Amplifier-M-200t-120WPC-Amp_W0QQitemZ200327110781QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item200327110781&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318

Mar 02, 2008 | Sherwood RD-6500 Receiver

1 Answer

SR4300 Centre Channel


Hi...

Try another GOOD speaker on your centre channel.
If the buzz ....buzzes off, it's a bad speaker.
If not , It's in the power amp section on the unit.

Sep 14, 2007 | Marantz SR-4300 Receiver

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