wrote:

Rich Koerner wrote in message ...

The 6550WE is NO GE-6550A. It's not even close!!!!!!!!

Sonically, or electrically.

Pls clarify, Rich - R U saying that it doesn't dissipate well enough
under full load?

They don't give high output yield no the loads.

At low frequency, a sine wave is not a good looking sine wave, when the GE yields one.

The screens are not as hardy as the GE's.

Their service life for high power yields is short when compared to the GE.



If so, what specific failures have you noted or had reported - i.e.
screen toasted or etc.?

You can't stick a 6550 that is from off shore into everything you can stick a GE 6550A.

You will have to make changes so you don't toast the screens.

In low demanding unit they are OK.

A Leslie amp will not hurt them.

They may live in an SVT for a long period of time, all the while the power output is
slowly going down.

The low end punch on the B and E strings of the bass is getting flabby sounding, and you
may think you have a speaker problem going on.

It's one thing for the tubes to LIVE through the task, and another to HOLD UP high
performance yield, in performing the task.

GE's, hold a high level of performance for a LONG time.

I've NEVER had an imported 6550's give the 435 watts out from a 400-PS.

I slap in a set of GE's, and it's there at 50 Hz.

What does that tell you!!!!!!!!!!!!!!!!!!!!

Simple, ain't it.



This wld be valuable to know, as well as the
conditions under which there was a failure, if available.

Look, when someone comes in with an SVT or a 400-PS in the shop, there is a reason WHY,
they own them in the first place.

Magnavox SVT's with GE's do what they do. And, the owner WANTS that at all cost!!!!!

So, I slap in a set of say WE's. I get a call a few months later from the owner, and he
says, I think there is something going on with the amp, it seems to be getting weaker.
The punch in the low end is soft now.

Like the speakers are getting loose.

I slap the thing on the bench, and the output is now lower than were we started, and the
sine wave at low freq. is not so good looking.

Slap in a set of GE's, and the smile on his face says it all!!!!!!!!!!!!!!!!!!!

So, the WE's still work!!!!!!

They don't blow up the amp!!!!!!

So, I guess you can say there is no failure, except..... they just don't live up to the
performance characteristics, and give the service life of the GE-6550A!!!!!!!!!!!!!!!

THAT, is their failure!!!!!!!!




Yes we know the amp.

Electrically, it would be a stretch to make a distinction; unless the
mfgr is fraudulent or really lax, a spec is a spec..."not even close"
would seem to be a rash statement unless some mfgr's version sucketh
in specific, doccumented ways.

But it was/is not uncommon for some to run them above their 35w plate
dis at full power, which our old GE's sometimes tolerate somewhat (and
sometimes didn't or won't, as well).

Well, I've run GE-6550A's at way more than 35w.

More than 50w with out protest.





None of us hv seen it all, in my case hv yet to see a crappy 6550 that
wasn't oriental.

My standard for a yardstick IS the 400-PS. Because, the yardstick for the GE-6550A, was
the 400-PS.

That is how the history went.

So, re-writing history to favor the imports, is what is going on here!!!!!!


Regards,

Rich Koerner,
Time Electronics.
http://www.timeelect.com

Specialists in Live Sound FOH Engineering,
Music & Studio Production,
Vintage Instruments, and Tube Amplifiers