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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: RE: Two Fostex PM0.5-Sub MkII for $Au 100 posted by Crazy Dave on April 9, 2017 at 08:48:18:
Before I bought them I found a manual on line, and then thought through all the technical issues.Each sub has L&R outputs with fixed HP filters -10db at 65 Hz, and in front of the mono power amp is a band-pass filter. All this to match them to Fostex powered satellites and I assume, to avoid cone bounce below 20Hz in the sub. The Sub has its own volume control.
So with systems using passive spkrs I need to use them with L&R speakers whose unfiltered output goes to or below 65 Hz.
In the case of the Yamaha MS20S their AST alignment gets them to 7OHz, and that's okay, as they have a tone control. But there isn't room in the study for two of the subs to sit below & between the satellites.
For the bedroom system I'd need to adapt the sub's filters, if that's possible, to the B&W DM100 bedroom spkr's natural roll-off. OR get speakers for it that get down to 65 hz!
And, in any case I'll need a 'pre-out & amp-in' block of RCA sockets on the back of the rcvr! I've wanted to recap and service it for a while, anyway.
Time will tell. A spkr swap of a pr of Jamo CBR 930s (~30Hz) for AR7s which also go low enough (~ 35Hz.) OR put the Jamo's in the bedroom and give the DM100s to one of our sons!
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Edits: 04/09/17
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Follow Ups
- Each sub's line inputs and outputs are configured for use with a L & R pair. - Timbo in Oz 14:53:59 04/09/17 (1)
- RE: Each sub's line inputs and outputs are configured for use with a L & R pair. - Crazy Dave 19:17:55 04/09/17 (0)
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