Bob Carver 275 Stereo Vacuum Tube Amplifier

[cuda-dude]

They are dead quiet only ones with problems make noise. I

 

[MRL_Audio]

^^ ??

 

[pjrengineer]

They are dead quiet only ones with problems make noise. I

Oh really care to expand?

 

[JesusChrysler]

He felt so strongly about that statement it's his only post here




Matt

 

[AlTinkster92]

Been curious to hear more about the trannie noise, if any. Seems they would answer any concerns posted in here........

 

[MRL_Audio]

Why should anyone from Carver offer a reply to a half***ed post that’s not even complete?

 

[pjrengineer]

Been curious to hear more about the trannie noise, if any. Seems they would answer any concerns posted in here........

I’m sure they are fine amps. Everything else I’ve read about them seems to lead me to believe they are a somewhat inexpensive alternative to an mc275 albeit with different circuits but should perform good or maybe as good (some may say better).

 

[audiowize]

These are absolutely nothing like a Mac 275. The Carvers are ~15W amps.

 

[pjrengineer]

These are absolutely nothing like a Mac 275. The Carvers are ~15W amps.
View attachment 2429691

What is that?

 

[AlTinkster92]

Center transformer with the cover off??

 

[pjrengineer]

Center transformer with the cover off??

So the output transformer is only good for 15 watts?

 

[AlTinkster92]

Dont know which one it is, also dont know what Audiowise was trying to say. If Bob says it's good for 75 per then I'm sure it is...

 

[audiowize]

That's one of the output transformers. They are 15W Edcors. That is not the power transformer. The amp absolutely does not make 75W at 1% THD at any frequency.

 

[audiowize]

Then what does it output? I have no horse in this race, it is just I want to say so? Which way is it, higher or lower?

The best result gotten from two different Crimson 275 amplifiers was 17.4W at 1% THD 1kHz.

0W is available at 20Hz under 1% THD.

This is consistent with what Edcor printed on the transformer labels BTW.

 

[audiowize]

Here is the complete write-up.
https://www.audiosciencereview.com/forum/index.php?threads/carver-crimson-275-measurements.29271/

 

[pjrengineer]

Here is the complete write-up.
https://www.audiosciencereview.com/forum/index.php?threads/carver-crimson-275-measurements.29271/

So when I read the tubes don’t even get warm, this explains it. Let me read the article first.

 

[whoaru99]

The next, to me anyway, obvious question is what does Carver have to say about it?

It looks pretty damning, but what's the rest of the story? It seems odd there would be such a large apparent discrepancy in such relatively easily testable performance.

 

[Dingman]

The next, to me anyway, obvious question is what does Carver have to say about it?

It looks pretty damning, but what's the rest of the story? It seems odd there would be such a large apparent discrepancy in such relatively easily testable performance.

Totally agree. This thread makes me think of the Clapton\Grandma thread.

 

[rustnrot]

This is an incredible discovery. I'm frankly surprised it wasn't discovered before this.

 

[whoaru99]

This is an incredible discovery. I'm frankly surprised it wasn't discovered before this.

Which is precisely why it is important to get the rest of the story and/or the other side of the story. Seems odd that just today such thing is posted for an amp that has nearly a 3 years running thread on it, not even considering exposure elsewhere.