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First Watt F7 review
First Watt F7 review
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Old 23rd September 2018, 11:36 PM   #1301
lhquam is offline lhquam  United States
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Quote:
Originally Posted by Hikari1 View Post
Who cares about grounding...I want to see more zd25 pics and a schematic!
Pics in post #1291. Schematic? Maybe at some later time.
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Old 24th September 2018, 07:55 AM   #1302
Cortez is offline Cortez  Hungary
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Quote:
Originally Posted by Nelson Pass View Post
Nevertheless, because it is important to you, this morning I took an F7
and put it on the bench and measured the following with my trusty AP.
Wow, thanks a lot Mr. Pass I greatly appreciate you took those tests, it's really generous from you!
I didn't want to bother you with this issue just beeing curious how such a GND layout doesn't cause any major hum.
It's intresting what the simulated model was missing if the real life measurements are so different.
Thanks anyway!
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Old 24th September 2018, 06:06 PM   #1303
Nelson Pass is offline Nelson Pass  United States
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First Watt F7 review
Your welcome, and I was also interested in getting some testing on it,
but in the end ZM the made me do it.
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Old 24th September 2018, 06:46 PM   #1304
Zen Mod is online now Zen Mod  Serbia
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First Watt F7 review
yup

as usual , blame on me

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Old 25th September 2018, 08:12 PM   #1305
Dennis Hui is offline Dennis Hui  Canada
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First Watt F7 review
Quote:
Originally Posted by Nelson Pass View Post
ZM the made me do it.
Hah! That's wonderful.

Thank you Papa for the measurements.

(Will also remember that line the next time I have to explain why another box of parts shows up... )

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Old 8th October 2018, 10:37 PM   #1306
Antoinel is offline Antoinel  United States
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First Watt F7 review
Please see the last post in the thread "Compound power amplifiers'. It shows the schematic of a powerful power amp which embodies positive current feedback.
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Old 19th November 2018, 08:49 AM   #1307
Juntuin is offline Juntuin  Finland
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Can't wait until Mr. Pass publish F7 schematics This is probs best option for electrostatics in first watt range since it handles reactive loads so well. Is it still many years away?
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Old 19th November 2018, 02:44 PM   #1308
vdi_nenna is offline vdi_nenna  United States
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Can't wait until Mr. Pass publish F7 schematics
You should be excited, if the schematic comes out. These are great amps! I have two simulated F7s doing highs and mids duty, plus a F5T v2 on the woofers. Got some great reviews from my audio group yesterday. They seemed to really like the sound. They liked my DIY speakers, but I gave all the credit to the power amps and B4s!

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Old 19th November 2018, 02:48 PM   #1309
Juntuin is offline Juntuin  Finland
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Originally Posted by vdi_nenna View Post
You should be excited, if the schematic comes out. These are great amps! I have two simulated F7s doing highs and mids duty, plus a F5T v2 on the woofers. Got some great reviews from my audio group yesterday. They seemed to really like the sound. They liked my DIY speakers, but I gave all the credit to the power amps and B4s!

Wow, what an arsenal of Pass amps!
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Old 19th November 2018, 02:51 PM   #1310
vdi_nenna is offline vdi_nenna  United States
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Wow, what an arsenal of Pass amps!
You don't know the half of it!
The list is long and distinguish!

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