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Audio Horizons fuses.... won’t buy them again...

I’ve bought 5 Audio Horizons Platinum fuses a couple of months ago, for my amps, speakers and DAC.
Three days ago, coincidentially, the 5A fuses on my mono amps (Rogue Apollos), blew at the same time on start up. Replaced them with the OEM fuses, and everything works again.
I have a very good electrical installation, with independent lines for each amp, a no surges or anything strange occurred. My speakers, Evolution Acoustics MM3s are always ON, and nothing happened to the fuses on them.
I emailed Joseph Chow inmediately and his response was to send the fuses back to him (at my cost, I live in Ecuador...), to repair them for $70/each, plus shipping.
I have paid $138 for each fuse in October, and no warranty?... what a shame!!!
Won’t buy these fuses again, NEVER!!!
128x128leog2015
jea48
2,944 posts
 

twoleftears
387 posts                                                                         01-01-2018 12:38pm

So if I only need 0.25A in the first place, and go up to 0.5A, that’s still doubling the value.
Hmmm.
In the event of an overload condition it could be even more than double before the fuse blows.

electrical characteristics
Rated Current 1⁄16- 30A

% of Amp Rating Opening Time
100%None
135% 60 minutes maximum
200% 120 seconds maximum
http://download.siliconexpert.com/pdfs/2017/7/16/3/4/59/187/ech_/manual/505268968020198product-datas...

For a slo-blo fuse,
1/4 amp, it could be overloaded 135% up to 60 minutes maximum before it blows.
0.25 X 135% = 0.34 amps.
0.25 amp overload condition of 200% for up to 120 seconds maximum.
0.25 X 200% = 0.5 amp

Replacing a 1/4 amp with a 1/2 fuse.

1/2 amp fuse.
1/2 amp, it could be overloaded 135% up to 60 minutes max before it blows.
0.5 X 135% = 0.68 amps
0.5 amp overload condition of 200% for up to 120 seconds maximum.
0.5 X 200% = 1 amp.

Jim

gdhal's avatar
gdhal
1,641 posts
 
Just stay away from the fuse snake oil, it’s all BS just to get your dollars.
@georgehifi

While I’m inclined to agree with you completely, I’m curious as to your opinion as to why so many folks (on this forum and others, such as very recent postings on head-fi where the Yggy fuse is concerned) claim to *hear* an improvement when switching from a manufacturer supplied fuse to a boutique aftermarket fuse.
georgehifi's avatar
georgehifi
4,966 posts
 
purport to *hear* an improvement when switching from a manufacturer supplied fuse to a boutique aftermarket fuse.
Simple answer to that one, "they don't". If you know your ac/mains theory, it's just not possible. 

What they do hear is "expectation bias" waiting for it to arrive after spending $130 on a $2 fuse. Or their replacing an old fuse that's had too many turn on surges over time and carbonising and getting ready to blow like this pic below.
There's no way they could reliably pick the difference in a blind A/B.

https://i.stack.imgur.com/0uqWX.jpg

Cheers George 
nonoise's avatar
nonoise
4,382 posts
 
Go back through the fuse threads and you'll see that this argument has already been shot down. Properly made fuses should show no signs of wear unless they are cheaply made. All they have to do is blow when required. 

Now imagine the silliness of an argument that purports that hundreds, if not thousands of people succumb to expectation bias when it comes to fuses. Now attribute that silliness to the people who bring it up over and over again.

All the best,
Nonoise
georgehifi's avatar
georgehifi
4,966 posts
 
Go back through the fuse threads and you’ll see that this argument has already been shot down.

Really!! think about it. Your comparing your new "boutique" $$$ fuse to an old $2 original one that’s seen many turn on cycles from when the unit was new, and is carbon’ed up and bent out of shape as in the pics.
(left is new, right is after many turn on cycles) 
https://i.stack.imgur.com/0uqWX.jpg
You have no argument, all you have is " expectation bias".

Cheers George
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