Adding VU meters to First Watt F5v2 Amplifier

Rbertalotto

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Badbruno

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Roy a great project !! I’ve been thinking of adding VU meters for my 6 channel active system, 6 class D amps ! Thanks for sharing this journey and the links.

same interests!
Porsche, photo, audio and …
Bruno
 

MediumRare

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Fun project. I’d be interested to see you measure distortion at different SPLs, with and without the meters. No disrespect, but the Pass amp has audible distortion above 2 or 3 watts. Specs on the First Watt website.
 

Rbertalotto

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Schiit Saga
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Yamaha M45
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VTA St120 Dynaco
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RelTek
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Schiit Modi
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Magnapan MMG
Subwoofers
B&W
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Andover Songbird
No disrespect, but the Pass amp has audible distortion above 2 or 3 watts.

Yup, Like many GREAT sounding amplifiers, Measure Poorly...Sound Fantastic......I've bought at least 6 amplifiers in the last few years that were reviewed and reported Great measurement, but sounded horrible and I sent them back. My Tubes4HiFi Dynaco tube clone ST120 probably measures real bad....But the sound through KEF LS50 Metas or Magnapan MMGs sounds heavenly.....My ears are all the measurement device I need......No disrespect.....
 

MediumRare

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Yup, Like many GREAT sounding amplifiers, Measure Poorly...Sound Fantastic......I've bought at least 6 amplifiers in the last few years that were reviewed and reported Great measurement, but sounded horrible and I sent them back. My Tubes4HiFi Dynaco tube clone ST120 probably measures real bad....But the sound through KEF LS50 Metas or Magnapan MMGs sounds heavenly.....My ears are all the measurement device I need......No disrespect.....
But you also said it got shrill, so….
 

Rbertalotto

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Thread Starter
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Mar 4, 2021
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Schiit Saga
Main Amp
Yamaha M45
Additional Amp
VTA St120 Dynaco
Computer Audio
RelTek
DAC
Schiit Modi
Front Speakers
Magnapan MMG
Subwoofers
B&W
Streaming Equipment
Andover Songbird
Yes, adding that small power supply too close to the low level inputs cause some kind of interaction. Once it was disconnected it went back to the sweet sound it had. Power supply is now outboard and 6' away. Mo bettah!
 
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