[steveaudio]

A tube power amp has different characteristics is from a solid state amp which will influence its performance with vintage or new speakers. The limiting element in a tube amp is the output transformer. A high fidelity transformer tested by itself rolls off the very high end beginning about 8khz, and rolls of the low end beginning about 50 Hz. Install that same transformer in a High (20 dB) feedback power amp and the response flattens nicely from 20 Hz to 20 kHz. But that flatness comes at a price. The price is twofold. 1) the damping factor begins to tail up at the ends of the spectrum and 2) the power response turns down at the ends of the spectrum. Power response at the high end falls off because of losses in the transformer. This is generally not a big issue since rarely is full output needed between say, 5 to 20 kHz. The low end is a different story. Transformer saturation will cause third harmonic distortion at high power levels, and transformer inductance will cause loss that will be reflected -- not in reduced frequency response -- but a tailing up of the damping factor and reduced power response. And where do we need power the most? At the low end!
The loudspeakers of the tube era were optimized using tube amps because at the time that was all there were. Modern speakers are designed and tested with solid-state amps. Does that mean you have to use a tube amp with, say, an old Advent? No, but recognize that there will be a difference in sound because the amp characteristics are different. I leave it to the dedicated audiophile to find a way to optimize the performance of legacy speakers when using modern amps.

[Phil Allison[_3_]]

"steveaudio"

A tube power amp has different characteristics is from a solid state amp
which will influence its performance with vintage or new speakers. The
limiting element in a tube amp is the output transformer. A high
fidelity transformer tested by itself rolls off the very high end
beginning about 8khz, and rolls of the low end beginning about 50 Hz.

** Total ********.

So is the rest of this mindless tripe.

**** off - idiot TROLL




...... Phil

[[email protected]]

Actually, as long as you are speaking in very loose generalizations, that and the subsequent statements are true. Whether you accept the conclusion drawn from it is another matter. I hardly think however, that his reply is worthy of the derision you inflict.

Of course there are transformers that don't roll of starting at 8k, but look at the iron used in most 50's and 60's hifi stuff, and you'll see that this guy isn't too far off the mark.



On Monday, December 9, 2013 6:05:41 PM UTC-5, Phil Allison wrote:
"steveaudio"



A tube power amp has different characteristics is from a solid state amp

which will influence its performance with vintage or new speakers. The

limiting element in a tube amp is the output transformer. A high

fidelity transformer tested by itself rolls off the very high end

beginning about 8khz, and rolls of the low end beginning about 50 Hz.



** Total ********.



So is the rest of this mindless tripe.



**** off - idiot TROLL









..... Phil

[Phil Allison[_3_]]

Actually, as long as you are speaking in very loose generalizations, that
and the subsequent statements are true.

** Every single one is **completely false**.

What planet do you live on ??


Whether you accept the conclusion drawn from it is another matter. I hardly
think however, that his reply is worthy of the derision you inflict.

** Yes it was - the OP is a notorious TROLL.


Of course there are transformers that don't roll of starting at 8k, but look
at the iron used in most 50's and 60's hifi stuff, and you'll see that this
guy isn't too far off the mark.


** Not YOU go look - smartarse !!

FYI:

The frequency response of a bare " hi-fi " output transformers extends out
to around 100kHz and down to under 1Hz at low power levels. The amplifier
does not correct the transformer and there is little or no change in the
damping factor (DF) over the audio band in most cases.

Eg.

A 1950s designed Quad 2 has a completely flat frequency response and the
same DF ( ie 12 ) over the range from 6Hz to 30kHz.



..... Phil

[[email protected]]

Boy, sure doesn't take much of a poke to prove your an ass, does it?