PM 600 power amp

Carver Pro Equipment Discussions and Questions
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merle
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PM 600 power amp

Post by merle » Thu May 06, 2010 6:19 am

Hello, I'm Merle.

please forgive a newbie question.

I recently purchased a second hand PM 600.
Just wanted to know what I need to check before firing it up. Are there measurements to do to see if it works properly, and where ?

any help or advice appreciated.

you can see my current audio rig in the appropriate section.

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TNRabbit
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Re: PM 600 power amp

Post by TNRabbit » Thu May 06, 2010 6:46 am

Welcome, Merle!

I don't know much about the professional amps, but someone we'll be along with more information. Be patient; the membership here is small & most work during the day, so it could be a while to get a reply~
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From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.

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Bill
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Re: PM 600 power amp

Post by Bill » Thu May 06, 2010 10:25 am

I've always wanted one of these, just to see how close they are to the non-pro amp sound wise.
You can't fix stupid.
George wrote:In certain configurations you need a permission slip from your Mom to bridge amps.

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engtaz
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Re: PM 600 power amp

Post by engtaz » Thu May 06, 2010 11:27 am

I tend to try out amps that Im not sure of on a spair speaker. I hook up only 1 channel at a time and input audio 1 input at a time. The adjustment pots are normally dirty so work them back and forth.
Specs are:
8-ohm FTC rated power/ch 200W
4-ohm FTC rated power/ch 300W
Bridged mono power 700W
4/8-ohm FTC rated THD 0.5%
IM Distortion less than 0.1%
Input Impedance (Line) 15k ohm
Input Sensitivity 1.5Vrms
Gain 28.5dB
Rated full power bandwidth +0, -3dB at 5Hz & 80kHz
Slew Rate 25V/u sec
Power Consumption 950 Watts
Fusing 8 amp slo-blo
Damping 200 at 1kHz
Dimensions (HxWxD inches) 3.5" x 19" x 11.56"
engtaz


Carver M4.0T in front channels to Caver AL VI's in SACD & 2 Channel setup
C 16, PT 2400, Slim Device, Carver TX-8, 490T and Rega TT w Grado Gold cart in the 2 channel setup
Bogen SRB20 is computer amp
Carver PM-350 donated for youth church use

merle
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Re: PM 600 power amp

Post by merle » Fri May 07, 2010 2:11 am

Thanks everyone.

this amp is really well built.

I'll find spare speakers and try not to blow 'em !

I'll keep you informed, and will take some pics of the guts. PCB is of stunning quality.

Powering the amp up, there's a slight mecanical hum (50Hz buzz ?)coming from it. Not really loud, but definitely audible (No speakers connected.).

Is it normal ?

funny thing : my setup is now (almost) 100% made in U.S.A !

Krell- Wadia- Altec- MIT- Carver. Next step, a Wadia transport !!!

best regards,

Merle

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Re: PM 600 power amp

Post by TNRabbit » Fri May 07, 2010 3:23 am

50 hertz? Where are you located??

Not uncommon for the transformer to have a hum....seems to be the norm on older stuff rather than the exception. As long as it isn't coming through the outputs, you're golden~
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.

merle
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Joined: Tue Apr 20, 2010 3:20 pm

Re: PM 600 power amp

Post by merle » Mon May 10, 2010 3:22 am

I live in Switzerland, and AC is 50Hz, 240V.
I guess I'll begin by checking DC offset at the output. If it is fine, I'll try with a spare Rowen R4 loudspeaker.

pics soon...

regards,
Merle

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BillD
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Re: PM 600 power amp

Post by BillD » Mon May 10, 2010 1:15 pm

Well, with that sensitivity, if you put 1½V in at 1000Hz (AC), you should read 200W (0dB) on the LED meter with nothing attached. That would tell you if the thing will go into protection or not. If it passes that test, I wouldn't hesitate to attach speakers to it. Free signal generators are available for a computer, and you can attach it to a preamp and adjust the level on the preamp to get 1.5V out with the tone generator software generating 1kHz. You do have a volt meter, yes?
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
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Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer

merle
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Re: PM 600 power amp

Post by merle » Thu May 13, 2010 8:39 am

Hi BillD.

Of course I do have a MM. I'll do the test this w.-e.
I hope everything is Ok.

Thanks everyone.

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