[BC] CD vs LP

Broadcast List USER Broadcast at fetrow.org
Sun Sep 21 20:12:11 CDT 2008


It is pretty well documented that tube amps have more even harmonic  
distortion products, and solid state amplifiers have more odd  
harmonic products.  We like even harmonics, and (generally) dislike  
odd harmonics, in very general terms.  Then there is the crossover  
distortion of many solid state amplifiers.

Then again, find a well designed Class A solid state amplifier, and  
compare it to the best of the tube amplifiers.  I have purchased 2400  
Watt solid state amplifiers that cost less than 20 Watt Class A  
amplifiers.  Those amps would really cover a remote!

Yes, a 20 Watt Class A solid state amplifier is gong to draw more  
than 20 Watts (OK, more than 40, typically) from the wall ALL THE  
TIME, and generate 20 Watts of heat (or more) for that average half- 
Watt of music driving the speakers, but it will sound good, until it  
clips.

Aphex made a box (and I think they still do) that will create even  
and odd harmonics, tuned by a knob.  BBL made something similar, but  
it was a bit less overtly stated.

Want "warm?"  Add even harmonics!

On Sep 21, 2008, at 3:25 PM, broadcast-request at radiolists.net wrote:

> Message: 31
> From: Larry Bloomfield <Larry at Tech-Notes.TV>
>
> In this same light, those who know me know that once upon a time I
> played theater pipe organ. Along with working in television for the US
> Navy, I also had an organ repair business on the side down in San  
> Diego.
> Some organists wanted me to replace the tube type amplifiers in the
> Leslie speakers with solid state. Although the specs on the solid  
> state
> were better than those with the older tube type amps, there was a  
> warmth
> to the sound of the tube amps that was missing with the solid state
> amps. The solid state amps just sounded colder and more harsh. May  
> be it
> was me, but I know other organists who agreed with me.
>
> * Larry Bloomfield*




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