Would removing the LEDs in my F4 or any FW amplifier yield better sound? - diyAudio
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Old 15th December 2012, 12:27 PM   #1
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Default Would removing the LEDs in my F4 or any FW amplifier yield better sound?

there is a proposal by tweak audio to do this among other tweaks and was wondering if anyone had experimented with this. maybe installing a small film cap across the led would make the same difference, thanks
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Old 15th December 2012, 01:09 PM   #2
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What would be the mechanism that this could be the case?

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Old 15th December 2012, 01:24 PM   #3
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Quote:
Originally Posted by Manolo47 View Post
there is a proposal by tweak audio to do this among other tweaks and was wondering if anyone had experimented with this. maybe installing a small film cap across the led would make the same difference, thanks
A forward biased LED is probably quieter than any of the transistors or resistors in the circuit. The impedance is low enough that a film cap bypass does nothing other than cost money and take up space. There may be psychological benefits, but any electronic ones are dubious.
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Old 15th December 2012, 01:40 PM   #4
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YES !!!!!!!!!!!

it will sound brighter , because every LED is stealing brightness* from amp!

*that's the reason why I'm always puttin' several LEDs in my projects - brightness setting mechanismus
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Old 15th December 2012, 03:16 PM   #5
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Apropos of the subject, when I first made FW amps with the blue LEDs, I
ran them at a couple ma current and they were fairly bright. This resulted
in comments about the high frequencies which went away when I dimmed
them down. Similarly, red and green LEDs elicit different perception of the
sound in a number of customers.

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Old 15th December 2012, 03:18 PM   #6
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I can't decide whether to chuckle or dim my Led's. I love it
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Old 15th December 2012, 04:34 PM   #7
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Finally! Something I dont have to worry about! I still havent installed the leds!
What a lazy *** I can be.

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Old 15th December 2012, 10:26 PM   #8
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Waiting on the following line being added to Pass DIY site on F4:

of course feel free to use what ever "audiophile grade" led you choose in your designs.
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Old 15th December 2012, 10:33 PM   #9
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In defense of the OP, if you brought this topic up in the Curl thread, you might get different opinions.
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Old 15th December 2012, 10:43 PM   #10
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everyone knows or should know that cryogenically treated quantum purified LEDs are the quietest.
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