To Fuse or Not to Fuse... That is the question!

At what (BurnIn / BurnOut) is nirvana attained?

Now, am I the only one who’s got experience with fancy fuses and no fuses at all?

Mr Kait’s fuses all blew long ago... ~<:-)

Fuses are connectors. Refreshing connectors has always paid dividends.

There is such a lack of rigor in 'fuse' testing that it would be laughable if it were not so sad.

Tried smoking banana peels, in the 60's(per Donovan's recommendation).

Electrical Banana was a vibrator!!!

No fuse sounds better until a power surge fries your gear

from Littlefuse 3AG Slo-Blo 313/315 Series

% of Amp Rating          Amp Rating         Opening Time
----------------------          --------------------         -------------------
100%                           10mA – 30A              4 hours, Minimum
135%                           10mA – 30A              1 hour, Maximum
200%                           10mA – 15A              5 sec. Min., 30 sec. Max
                                     20A – 30A                5 sec. Min., 60 sec. Max

The average time / current curves for a 5A Slo-Blow requires ≈20A to open in 1 second, typ. A 5A fuse would typically be fit for a 2.5A load. To get 20A into the unit would require a surge of about 1000V. By the time the fuse blows, it's all over but the crying.

There is an old saw "Speaker/Transistor protected fuses" that has more than a little truth to it.

what’s the difference?

his posts are cogent. A definite breath of fresh air!

Perfect! And so typical: A made up quote & misattribution.

"There's a lotta things ... you don't know anything about, Kait-ee.
Things you wouldn't understand. Things you couldn't understand." - Pee-wee

“Never argue with an idiot. They will drag you down to their level and beat you with experience.”
― Mark Twain

Question for the group: can one know much about his / her audio system without being an engineer?

If it gives you pleasure, that's all you need to know. If however, it cannot provide a reasonable simulacrum of an original, perhaps a little knowledge could help.

Further, if you are an engineer, do you even need to own any audio system to be an audio expert?

I r enginerr. I never stop learning.
Most engineers I know do not consider themselves expert. They have the knowledge and skill to solve real world problems.
Experts give advice that rarely solve problems.

Huge resistance bottleneck which robs low level detail as well as grunge noise especially low level.

¿Que?

Littelfuse spec 5A 250v Slo-Blo 21.4mΩ
Measured 22mΩ with precision supply and resistor divider @ ≈115mA

Measured R after 10 minutes at each current.
0.55A 31mΩ
1.10A 31mΩ
2.20A 31mΩ

Power Transformer input Z ≈100Ω. Fuse is 0.023% of input Z.

Please explain how ZERO change in fuse characteristics can rob low level detail.

Crappy holders in harsh environments can create ugly artifacts. Ditto poor quality or wrong characteristic holders or fuses.

Imax cinema of focused sound

¿Que?

Zippy top over a swirly bucket of midrange mush?

the post stated the input impedance of a power transformer to be 100 ohms. That would not be correct, certainly for large transformers and that does not take into account the reflected impedance of the output circuitry.

Correct.
Line voltage is 117VAC, primary idle current ≈ 1.2A. Z = V / I for simplicity.
Primary L = 85mH, R ≈ 0.6Ω. Z ≈ 32.05Ω @ 60Hz. Somewhat different with 5 loaded secondaries.

cleeds & jea48:
couldn't you children do this crying offline?

If roberttcan is a problem, what is Mr Kait?

It was sloppy-copy by cleeds.
roberttcam wrote:

No worried, I think jae48 said he would like to set up a room

https://forum.audiogon.com/discussions/to-fuse-or-not-to-fuse-that-is-the-question/post?postid=1822483

Now that jae48 has deliberately fabricated false quotes, should I sue?
Report him to moderators?

As my dear old Nan opined, "If you can't stand the heat, get out of the kitchen"

Really, children.

Ditto!

^^^ bored with science?