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Old 9th November 2010, 04:45 AM   #1
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Default My fist Pass Amp

Dear All,

I have been listening to a lot of hardware here and there, some good, some less good. But last week in Audio Forum in Tokyo I heard something that was different.

It was a pair of Focal Utopia speakers, connected to a couple of Pass XA something.

The sound of these were different, better.

So, after I built a bunch of tume amps, I decided to have a Pass Class A SE amp as a next build.
As speakers I have a pair of Sonus Faber Grand Piano Domus 4 ohm 90db.

What build do you recommend ? There are so many models ?

Thanks,

Davide
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Old 9th November 2010, 07:23 AM   #2
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I would probably say F5
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Old 9th November 2010, 07:34 AM   #3
Zen Mod is offline Zen Mod  Serbia
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definitely

these 50W/4E will rock

that much that OP will soon seek for "proper" speakers , more suitable to A class amps philosophy
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Old 9th November 2010, 11:16 AM   #4
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Originally Posted by Zen Mod View Post
definitely

[B]

that much that OP will soon seek for "proper" speakers , more suitable to A class amps philosophy
I don't understand, what do you mean ?

Thanks,

Davide
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Old 9th November 2010, 11:42 AM   #5
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I meant on loudspeakers with greater dynamic capability

old school , whatever
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Old 9th November 2010, 11:50 AM   #6
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by Zen Mod View Post
I meant on loudspeakers with greater dynamic capability

old school , whatever
Keep going .............................
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Old 9th November 2010, 11:58 AM   #7
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Well, I am intrigue both by open baffle and horns, but I have so much reading ahead for this !!! I have only the experience with the full range microfonken that I use as PC speaker, not bad at all.

F5 does not look like a complicated build, although the quantity of messages in the thread is scaring. I guess PCB on diyaudio store, psu board from another GB (I need only 1 or two? ) Two bridges.... OK I have to find the BOM :-)

Thanks,

D.
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Old 9th November 2010, 01:44 PM   #8
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Wow, so many versions of the F5 pcb ! Just curious, why F5 and not aleph something ?

D.
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Old 9th November 2010, 01:52 PM   #9
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Because to drive your speakers with a single ended Aleph will be more expensive.
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Old 9th November 2010, 07:49 PM   #10
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Another very appealing aspect of the F series is that once you build a power supply with a 500VA 2x18V transformer, some CL60 thermistors, a couple big caps and resistors, you can power the F1 , F2, F3, F4 and the F5 by doing just minor changes to the PSU, but with the same xformer and even the same case/heatsinks...
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