Quantum Science Audio Thread

Been using on/off breaker switches in my mods and gear for many years. Sounds better than a stock fuse. I learned the idea from Paul Weitzel of Tube Research Labs some 16 ears ago. Eaton Heinemann. Does it sound better than a QSA fuse? Don’t know as I never compared.

cerberus79
A few months ago I purchased a used pair of speakers from another Agon member.
To my surprise all the fuses were Orange fuses. I listened to them and then to satisfy my curiosity I replaced them with ordinary buss fuses and could not hear a difference.
I did this test with a bunch of friends and neither I or them could hear a difference. Kind of just says it all doesn't it?

To those non technical thinking of purchasing these $$$ fuses. Just save your $150+ and do this instead.

A fuse:
1: two end caps
2: short piece of fuse wire connecting the two end caps through a glass tube (that’s all she wrote).

To those "non technical" members that are interested in "maybe" wasting their money, do not listen to the non-technical, listen to the technicians of this industry that design the audio products you have and listen to. AND YOU WON"T SEE THEM ON THREADS LIKE THIS AGREEING WITH WHAT SAID HERE ABOUT THE SOUND IMPROVMENT DETAILS AND AC FUSE PLACEMENT DIRECTION, EVER!!!
Just clean and tighten your fuse holder and re-new your fuse (if old) with a good quality 50cent Bussman, Littlefuse or similar.As with "many switch-on surges" they do deteriorate, bend, stretch and get crusty with electrolysis formations on their fusible wire elements before they give out, as these pics show of a fuse wire element ageing over time show. https://ibb.co/9NbTwqK (even the $$$ boutique ones will age just as much also)

Cheers George

Anybody ever upgrade their outlets?
I am curious about this.

@coralkong yes everything from Hubbel hospital grade to xx top secret cryo treated . Jump in !

High clamping force and metallurgy that stays oxide free plus cryo lead to good results for me. I keep several in my traveling system setup bag. 

@cerberus79
I rarely post anything here. I did so this time because I had direct experience on the topic and reported it in a factual and non judgmental fashion. My reward was to be called a lier by one member and told I was in the wrong hobby by another ( I have been in this hobby for 49 years ). I am and always have been in this hobby for the enjoyment of music. I once got into a discussion with Geof Kait on the directionality of fuses and realized

You/we are lucky GK has disappeared (or been banned) he was a real comic piece of work but fitted in well in these types of threads, and his website is really out there https://www.machinadynamica.com/machina5.htm best one is the pebbles.

As for your Maggies I had quite a bit to do with them owning the big Tympanies also, before going on to big ESL’s.

cerberus79A few months ago I purchased a used pair of speakers from another Agon member. To my surprise all the fuses were Orange fuses. I listened to them and then to satisfy my curiosity I replaced them with ordinary buss fuses and could not hear a difference. I did this test with a bunch of friends and neither I or them could hear a difference.

As you stated no difference in sound whether 10cent Bussman fuses were in or $150 SR Orange were in, to yourself or when the guys were around to do the A/B with.

cerberus79
Has the purpose of a fuse been lost ? How it is designed to work ? By design there is no directionality in a fuse. it is simply designed to open in an overcurrent situation. If it was directional in relation to the current passing through it would be a diode

Same thing I say to them, if it’s directional then it’s trying to be a diode, and that NOT good in either direction!

But I can tell your Maggies will sound a touch better with just a piece of copper wire soldered lightly outside of the fuse clamps and no fuses. This makes them vulnerable to an amp blowing and going dc, as you know having electronic knowledge background, but no more so than any other speaker would have no dc protection either.

You could try one of these if you want to retain the protection soldered to the fuse clamps.
https://www.jaycar.com.au/5-amp-circuit-breaker/p/SF2254

Cheers George