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  1. Unknown amp for sub??

    Subwoofer Amps | High Pass Filters
    Hi. I found an Audio Centron rma-250 (by SLM) that is rated at 250 watts into 4 ohms bridged for $25. Has anyone heard of this company/amp? It seems to be a pro sound amp. Also, the driver that I intend to use is a 4 ohm DVC unit, so IF this amp is suitable, would I be better off using the amp...
  2. Ported box tuning questions for unknown T/S B&W driver

    DIY Subwoofers - General Discussion
    Hi guys, so on a very random post on craigslist, I found the components of 2 B&W ASW2000 subwoofers on sale. yes, just the parts, without the boxes. Since I thought the 2 plate amps alone were worth the 100 bucks, I picked up the amps, 2 12" drivers, and the port tubes he had salvaged from...
  3. Build thread! Unknown 12" Sony driver...

    Ported Subwoofer Build Projects
    Well, I decided to start a new project. Not for my home theater, but just for fun. Had an old 150W Sony SA-WM500 sub. A 12" home theater sub bought back in 2000 when I thought low frequency meant 25-30hz (LOL). Well the sub has been silent for about 5 years now so with all my spare parts...
  4. Driver with unknown T/S parameters....

    DIY Subwoofers - General Discussion
    Hey guys, took apart a Sony SA-WM500 and I was wondering how to find out the specs on the driver? Its a 12", but that's about all I know. It was in a 1.6 cu ft box, tuned to 24hz. Obviously, being a commercial sub, its limited by size. But, being a DIY-er, I am not limited by size. So I...
  5. Find unknown T/S parameters

    DIY Subwoofers - General Discussion
    I was given a 15" driver that had some very minor cone damage. A little glue and it works like new. The problem is, it doesn't have an enclosure. I would like to build a ported cab for the speaker but I know virtually nothing about this particular woofer. It seems to work pretty well down to...
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