PSW 1200 Plate Amp
soiset
Posts: 724
And now for something completely different:
The story:
This PSW 1200 was shipped to me a few years ago, and it wasn't packed well or treated kindly in transit. The amp lasted a few seconds after I turned it on, so I got a new one from the good folks at Polk Audio. About two years ago, I was getting quite annoyed with the rattles coming from the weakened cabinet, and decided to do something about it. The peak of my annoyance coincided with my purchase of a second PSW 1200 from these right here flea markets. Now I was free to repair the original sub.
I pulled the amp out, and reinforced the corners of the cabinet, and, not wanted to take any chances, decided to build a separate cabinet for the amp and use it outboard. I replaced the amp with 3/4" mdf, gasketed around the edges, and inserted some Dayton Audio posts through it.
I had to modify the amp a little for outboard use, but its nothing that can't undone (except for the two little holes I drilled to mount the volume dial and indicator light). Finally, I needed a cabinet for it. As I sat at my desk deep in the task of drawing up a box I would make out of some of the whole sheet of mdf that I had left over from the plate replacement, my smarter half came in, asked what I was doing, and, looking down at my pile of Polk S4 speaker parts, said "Why don't you use one of those?" pointing at an empty cabinet.
"Damn," I said, "that's a good idea." So I cut the front baffle out of the front of the cabinet, drilled an additional ventilation hole (it already had the port in the rear) and dropped the amp in, neat as could be. I ran my speaker wires to the sub, plugged it in, and it worked beautifully; not a rattle or buzz to be heard.
Well, I'm going to be taking a different tack now. I'm going to pull the other plate amp out of the second sub, and run both subs from a pro stereo amp (Hafler P7000). So I have amps to sell.
First up is the "outboard" amp in the pic. Here's my asking price scheme:
Amp in cabinet, as is, that is, none of the mods undone: $150
Amp out of cabinet, mods undone (except for the two little holes): $180
Amp in cabinet, plus the mdf replacement plate with screws and Dayton Audio binding posts: $180
The story:
This PSW 1200 was shipped to me a few years ago, and it wasn't packed well or treated kindly in transit. The amp lasted a few seconds after I turned it on, so I got a new one from the good folks at Polk Audio. About two years ago, I was getting quite annoyed with the rattles coming from the weakened cabinet, and decided to do something about it. The peak of my annoyance coincided with my purchase of a second PSW 1200 from these right here flea markets. Now I was free to repair the original sub.
I pulled the amp out, and reinforced the corners of the cabinet, and, not wanted to take any chances, decided to build a separate cabinet for the amp and use it outboard. I replaced the amp with 3/4" mdf, gasketed around the edges, and inserted some Dayton Audio posts through it.
I had to modify the amp a little for outboard use, but its nothing that can't undone (except for the two little holes I drilled to mount the volume dial and indicator light). Finally, I needed a cabinet for it. As I sat at my desk deep in the task of drawing up a box I would make out of some of the whole sheet of mdf that I had left over from the plate replacement, my smarter half came in, asked what I was doing, and, looking down at my pile of Polk S4 speaker parts, said "Why don't you use one of those?" pointing at an empty cabinet.
"Damn," I said, "that's a good idea." So I cut the front baffle out of the front of the cabinet, drilled an additional ventilation hole (it already had the port in the rear) and dropped the amp in, neat as could be. I ran my speaker wires to the sub, plugged it in, and it worked beautifully; not a rattle or buzz to be heard.
Well, I'm going to be taking a different tack now. I'm going to pull the other plate amp out of the second sub, and run both subs from a pro stereo amp (Hafler P7000). So I have amps to sell.
First up is the "outboard" amp in the pic. Here's my asking price scheme:
Amp in cabinet, as is, that is, none of the mods undone: $150
Amp out of cabinet, mods undone (except for the two little holes): $180
Amp in cabinet, plus the mdf replacement plate with screws and Dayton Audio binding posts: $180
Post edited by soiset on
Comments
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Ironically, I have a psw1200 with a faulty plate amp. do you still have either one for sale? my family lives in dallas, though I am stationed in Baltimore, Md.
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Ironically, this was over a year and a month ago. Check the date, it'll keep your hopes down.
Welcome aboard though! Never kick a fresh **** on a hot day.
Home Setup: Sony VPL-VW85 Projo, 92" Stewart Firehawk, Pioneer Elite SC-65, PS3, RTi12 fronts, CSi5, FXi6 rears, RTi6 surround backs, RTi4 height, MFW-15 Subwoofer.
Car Setup: OEM Radio, RF 360.2v2, Polk SR6500 quad amped off 4 Xtant 1.1 100w mono amps, Xtant 6.1 to run an eD 13av.2, all Stinger wiring and Raammat deadener. -
Lol...you never know...it might still be for sale. If not, there may be others that have what you need. Good luck.
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Ironically, this was over a year and a month ago. Check the date, it'll keep your hopes down. Welcome aboard though!
A shot in the dark is still a shot. And even if this one isn't for sale, someone else might have what I am looking for. I'm just putting the word out there. We will just see what comes back. -
Nope, don't have it any more. BUT, I have advice: That plate amp was from a time when bass management on receivers was rare or non-existent, making most of the amp's features now redundant. You'll come out cheaper, and with better results by replacing the amp with an outboard commercial amp. You can even rewire the drivers in parallel to present less resistance to an amp that can handle the lower ohm load, which most commercial amps can. Get a commercial amp from craigslist or ebay, and give it a shot. There will be plenty of guidance here if you need it.
OTOH, I do have another complete PSW1200 in very good condition that I will soon be looking to sell...
