Do tubes do anything well in circuits?

[mhardy6647]

It looks like a thermistor to me -- basically an inrush current limiter, methinks (since it's sittin' next to what appears to be the HV rectifier bridge).

EDIT:
PS Looks like someone's loaded that amp up with some frou-frou capacitors...

 

[Murray A]

350 W? Phhhuiii...

750 W:

Reference 750 SEL Mono Amplifier – Audio Research

audioresearch.com

500W -- OTL!!! http://atma-sphere.com/en/ma-3.html

I'd like to see one of these amplifiers driving a vibration exciter at full power 24 hours a day

Does anybody know what the component circled in red is/does?

A 60 ohm negative temperature coefficient thermistor, in series with the two series connected input caps. Prevents hammering of the power transformer upon turn on.

 

[Murray A]

EDIT:
PS Looks like someone's loaded that amp up with some frou-frou capacitors...

At owners request!

 

[DonH56]

I'd like to see one of these amplifiers driving a vibration exciter at full power 24 hours a day

A 60 ohm negative temperature coefficient thermistor, in series with the two series connected input caps. Prevents hammering of the power transformer upon turn on.

I doubt it would last anything like 24 hours. The end might be fun to watch, from a distance.

Exactly my thoughts on the thermistor, except I don't remember the common cold resistances any more. Too many years since my TV days when they were in all sets -- and a frequent source of repairs.

 

[Doodski]

Too many years since my TV days when they were in all sets -- and a frequent source of repairs.

I thankfully am pleased that I never repaired a TV set nor a microwave oven. I took one look at those TV sets with brown dust/fur inside and the greasy smelly microwave ovens and I decided that mechatronics, car audio and home audio would be my thang at the time. That and after seeing a workmate take a hit off a magnetron. He yelped like a badly hurt dog and was not himself for ~3-4 days after.

 

[mhardy6647]

Exactly my thoughts on the thermistor, except I don't remember the common cold resistances any more. Too many years since my TV days when they were in all sets -- and a frequent source of repairs.

Yeah, that one looks like the thermistors straight outta 1960s colo(u)r TV sets.
My father was a self-employed TV repair person for most of my young life, until he (asymptotically) retired in the late 1980s/early 90s.
I knew my way around the CRT TVs of the 60s and 70s pretty well, as a consequence.