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Old 24th January 2003, 01:46 PM   #11
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Quote:
Originally posted by planet10
Has anybody actually done this modification or who would I dont think hans will
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Old 24th January 2003, 01:47 PM   #12
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Quote:
Originally posted by GRollins
Mods? How crazy do you want to get? Add caps to the power supply? Swap transistors in the front end? Rebuild it as an X? (Don't take me up on that last one. I've got too many projects on my plate already.)
The amp can be bridged by inverting the input to one channel and using the positive outputs <i>only</i>. Leave the negative outputs alone. The power will be x4 until you exceed the available current; it's a good idea to stick with 8 ohm loads so that this dosn't happen too quickly.
I've got two of the original S-500s. They make good low frequency amps. The mids and highs are a little cloudy, but still match or exceed a number of the units on the market today. Ditto for imaging and detail retrieval.

Grey
How would I do it. Reverse the inut of channel 2 and add to channel 1? Illenema@yahoo.com
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Old 24th January 2003, 11:42 PM   #13
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Quote:
Originally posted by Nelson Pass
www.passlabs.com/temp/thr_fe90.tif
Nelson,

This all looks very interesting, however do you have a schematic
that you can provide that covers the circurity on both headers.
I have an S300 I would like to try this out on.

Regards
Jim Wilson
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Old 26th January 2003, 05:43 PM   #14
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I don't want to be the guy doing everything here....

Anybody want to mate this front end to a Stasis output
stage for Jim?
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Old 26th January 2003, 06:31 PM   #15
jam is offline jam  United States
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Mr. Pass,

Speaking of which I just found the schematic of the Nakamichi PA-7, which I believe you designed a few years ago........

Jam

P.S. Nice use of transistors strapped to provide a voltage reference. Do they have lower noise than a zener?
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Old 26th January 2003, 11:04 PM   #16
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You are assuming I have a schematic of this amp, as if
Nakamichi sent me one. Keep in mind that this was
primarily a licensing deal, and Nak was/is free to do what
they like, particularly as Threshold doesn't appear to
exist any longer and the patent is expired.

pass/ - he's listening to Rasa Exotica, which Jam would
probably like.
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Old 26th January 2003, 11:25 PM   #17
jam is offline jam  United States
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Mr.Pass,

I shall send the schematic along to you, if only for sentimental reasons.

Jam

P.S. Rasta Exotica ... is that like New Age Regge?
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Old 26th January 2003, 11:36 PM   #18
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Actually, I think I do have a copy, which you sent me
previously, thanks very much.

No, more like Indian Lounge.


pass/ - having fun signing off like halo
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Old 26th January 2003, 11:52 PM   #19
jam is offline jam  United States
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Wink You are feeling sleepy!

Yeah! Halo is having far too much influence on members of this fourm......



Jam

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Old 27th January 2003, 12:06 AM   #20
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Default Re: You are feeling sleepy!

Quote:
Originally posted by jam
Halo is having far too much influence on members of this fourm......
Not a bad thing IMHO... and now that he is enlightened his content has risen dramatically...

dave
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