CARVER PM 1200

Carver Pro Equipment Discussions and Questions
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TFM Carmine
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CARVER PM 1200

Post by TFM Carmine » Sun Dec 19, 2010 7:56 pm

I just picked up a Carver PM 1200 if i use it for powering an 8 ohm CV Intense 18" sub should I use 1 channel & sorta use power steering feature? and does this amp have this feature? I would bridge it but I'm gonna be using the sub output out of the back of my dvd player because I dont have a sub output in my preamp so I wont be able to adjust the input evenly because this amp needs both knobs at the same spot so it would be tough to turn both at same time like a volume control for the sub. any ideas of which way I should wire it, bridge, or use 1 channel? thanks for any help in advance
CT-29v,TFM-55, PM 1200

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Re: CARVER PM 1200

Post by Rainman » Sun Dec 19, 2010 8:05 pm

You do know that the PM1200 only has XLR and 1/4 inch TRS inputs don't you? This may be a small issue when you go to hook it up directly to your dvd player....

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TFM Carmine
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Re: CARVER PM 1200

Post by TFM Carmine » Mon Dec 20, 2010 7:21 am

yes I have 1/4" - rca adapters
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fhawk618
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Re: CARVER PM 1200

Post by fhawk618 » Wed Dec 29, 2010 5:54 pm

You can bridge that amp to accomplish your goal--the gain controls are detented as well as labeled fairly clearly, so you can set both channel controls to the same level.

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Re: CARVER PM 1200

Post by TFM Carmine » Thu Dec 30, 2010 5:09 pm

thanks that's probably what i'm gonna do
CT-29v,TFM-55, PM 1200

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Re: CARVER PM 1200

Post by TNRabbit » Thu Dec 30, 2010 6:05 pm

What's the power handling of the sub?
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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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Re: CARVER PM 1200

Post by fhawk618 » Thu Dec 30, 2010 6:09 pm

Make sure you bridge it correctly--I have all PM 1.5 amps and they have to be externally jumpered to carry the signal to both channel inputs and then there is a recessed switch between the XLRs that has to be changed. The PM 1200 is the same as a PM 1.5A--which is the updated version of the PM 1.5 amp. Primary differences were the addition of 2 extra power transistors and a second cooling fan (primarily to better accomodate lower impedence loads). I'm not sure if they updated the bridging to an easier switchable configuration. You can check out the manual at The Carver Site--they have all the user and service manuals available for download. You also realize that you will be using the R/L positive terminals only as the +/- for your single channel out.

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TFM Carmine
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Re: CARVER PM 1200

Post by TFM Carmine » Wed Jan 05, 2011 11:12 am

Yes I figured out that switch I had to stick a small screw driver to reach it, maybe it's missing the plastic cover? I'm not sure but it has a spring which is visible, I push button in for bridged is that right? I looked at manual online & it doesn't show the switch clearly. But this amp is an animal, & sounds great, I am really happy with it's authority, it's wicked but not in great condition but this is for my garage system so it don't matter, but 1 fan runs a bit slower than other, is this normal? thanks
CT-29v,TFM-55, PM 1200

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Re: CARVER PM 1200

Post by TFM Carmine » Wed Jan 05, 2011 11:15 am

The sub handles 1000 watts peak
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Re: CARVER PM 1200

Post by TNRabbit » Wed Jan 05, 2011 1:30 pm

If the sub is 8 ohms, you can safely bridge the amp into it. Just remember 1000 watts PEAK usually means you can hit that for a fraction of a second every several minutes, not constantly~

RMS (i.e.constant) load is usually about 1/3rd of the peak or less. Voice coils heat up & require cool-down time between bursts or they overheat & begin melting together. It doesn't necessarily happen all at once. It can begin with a few coils melting together, dropping the impedance, and as that happens more & more, you eventually end up with either a direct short or the impedance gets so low it triggers the amp to shut down.
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.

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Re: CARVER PM 1200

Post by fhawk618 » Wed Jan 05, 2011 7:50 pm

The switch is not broken--they're hidden that way from the start. Fans should run at about the same speed, but in my experience none of these variable AC fans run at the same speed at any given time/load. Make sure they are lubricated--use a really light oil or silicone lube. These amps are indeed brutes, and will take a beating. I've got a few that look like they're ready for the heap, but they perform just as well as the ones that look brand new. Weakest links are the electrolytic caps on the low and mid voltage rails--if you get a lot of noise, or the amp won't power up (protect light on), these are your likely culprits. Likewise with the fans--they can get noisy and eventually stop if not lubricated--this; however, will not shut the amp down until a thermal sensor picks up the excess chassis heat and shuts everything down.

Best of luck, and enjoy...

Frank

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TFM Carmine
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Re: CARVER PM 1200

Post by TFM Carmine » Thu Jan 06, 2011 6:07 am

thanks for that info, I will lubricate the motors and maybe the slower 1 will work better, and this amp looks like its in rough shape also but sounds great lol
CT-29v,TFM-55, PM 1200

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TFM Carmine
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Re: CARVER PM 1200

Post by TFM Carmine » Thu Feb 10, 2011 7:05 am

Ok I solved the deal with bridging the amp and needing to turn both inputs at the same time, I found a good deal on a ct29v for my home system so now I was able to retire my ct27v and use it for my garage system. Now I won't have to run the sub out of my dvd player like I was gonna have to when I was gonna run a ct6 preamp for the garage. So I will be able to leave both levels the same & bridge the amp, but if it has better sound in stereo through 1 channel then I'll do that instead, at least now the option is there, I just wanted to update this post.
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Re: CARVER PM 1200

Post by TFM Carmine » Tue Apr 05, 2011 4:06 pm

I think I blew the CV 18" sub so I now use the empty speaker cabinet for my cats lol, they love it. I even took the carrying handles off it they go in & out through the handle holes or the large woofer hole, I just don't think it was worth buying a woofer for :-({|=
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Re: CARVER PM 1200

Post by TNRabbit » Tue Apr 05, 2011 4:50 pm

TFM Carmine wrote:I think I blew the CV 18" sub so I now use the empty speaker cabinet for my cats lol, they love it. I even took the carrying handles off it they go in & out through the handle holes or the large woofer hole, I just don't think it was worth buying a woofer for :-({|=
:lol: :lol:


I refer you to this thread:
TNRabbit wrote:If the sub is 8 ohms, you can safely bridge the amp into it. Just remember 1000 watts PEAK usually means you can hit that for a fraction of a second every several minutes, not constantly~

RMS (i.e.constant) load is usually about 1/3rd of the peak or less. Voice coils heat up & require cool-down time between bursts or they overheat & begin melting together. It doesn't necessarily happen all at once. It can begin with a few coils melting together, dropping the impedance, and as that happens more & more, you eventually end up with either a direct short or the impedance gets so low it triggers the amp to shut down.
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.

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