"Chad Wahls" wrote in message
...

"Landshark" wrote in message
...

"Frank Gilliland" wrote in message
...
On Mon, 22 Aug 2005 18:37:10 GMT, james wrote
in :

snip
+Again, true story. Where did I say anything different? You need a
+feedback loop in order to reduce crossover distortion in a bipolar
+push-pull, but you can't put a feedback loop in an RF amp.
+
+
******

Well you can but it is difficult to keep the amp an amp and not an
oscillator. I was pointing out that Tubes and FETs are more usable for
audio applications than bipolar in my opinion.


I guess it depends on the specific application. There have been many
popular PA's built with bipolar transistors -- Peavey, Carver, Crown,
etc. -- and they work just fine. Power MOSFETs are fine for mobile
audio. But for audio preamps and compressors, tubes are the best
choice, IMO.


snip
For about 100 PEP output from a pair of 6LQ6s as compared to a pair of
6146Bs, I will take the 6146B every day.


Absolutely. Besides, they're cheaper. I've got a dynamotor on the
shelf collecting dust and just waiting for such an application.


+But my point was that PEP @ 100% mod = 4 x carrier, a fact which
+befuddles voodoo CB techs like Bill the self-proclaimed CB Amp God.
+

COrrect in that. A PEP level is 4 times that of the AM Carrier. That
is the power that should be used to determine maximum useful output in
my opinion.


What I see a lot is new and naive CBers getting took on linears. The
amp might be rated for, say, 100 watts, but they aren't told that's
PEP, and for AM they need to reduce the dead-key input until the
output drops to 25 watts. Nor are they told that they aren't very
linear and need a LP filter to keep from being heard in the neighbor's
television.

Yeah, I've said all this about a hundred times before, but it needs to
be said again every once in a while.


What do you think about Macintosh Audio equipment?

Landshark



They don't make audio equipment, they make computers.

McIntosh on the other hand makes fine, long lasting gear

Chad


Yes, I stand corrected, thanks.

Landshark


--
Is it so frightening to have me at your shoulder?
Thunder and lightning couldn't be bolder.
I'll write on your tombstone, ``I thank you for dinner.''
This game that we animals play is a winner.