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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: amp fuse bypass question posted by ChadL on November 26, 2000 at 21:15:04:
Fuses are definitely non-linear and are affected by thermal memory (ie. their resistance changes with temperature, which changes according to signal variations through them). They introduce a measurable distortion if placed on the speaker circuit, so they should be removed.Rail fuses do not normally degrade the sound as their "contribution" is nulled by the amplifier global feedback. However their usefulness is limited, as the old proverb says, the transistors will always blow to protect the fuses.
If you wish to remove these, be warned though, that the consequences might be very expensive if something ever goes wrong. This includes house burning, speaker melting, etc. You might want to triple-check your amplifier's protection circuits specifications, and obtain a service manual.
However, fuses offer a long-term protection against fire, but if you remove them for an hour just to listen to the differences, I don't think you're at risk. You are welcome to try it with and without fuses as long as you stay close of the OFF switch, and report your findings on the asylum !!
If you ever bypass them, though, make sure both bypasses are firmly installed. Removing one would cut one of the two power rails, applying the full sypply voltage to the speakers.
Have fun ;-)
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Follow Ups
- Re: amp fuse bypass question - Peufeu 23:37:13 11/26/00 (0)
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