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Registered Member #3215
Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
that's not the distortion which plays a role here...
audiophiles are discussing the dynamic characteristics of the transfer curves, which are contextual...
"inertia" will vary according to electron flow and heat, which means the sound will feel different from one kind of music to another, as well as some parts of the frequency response, which is why ancient guitar amps on a model sometimes sound fantastic in some hands while a new one from the same model can be totally flat... it has a nonlinear evolution ^^
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Dr. Slack wrote ...
Ash Small wrote ...
Even order harmonics play a role too. I guess it depends on whether you consider them 'lost' or 'eliminated' with push-pull.
They are reduced, given that perfect matching between the sides never happens. And the loudspeaker puts them all back in again and then some.
There seems to be some concensus on the 'audiophile' sites that the best reproduction using single ended requires a horn rather than a conventional speaker, but I'm no expert, it's just what kept cropping up when I was researching the subject.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
If you ever have the chance to design your new house, built-in horn speakers are great. i.e. horn speakers for base notes are a civil construction project
When designing my last pair of speakers I listened to some high-end mid-high horns (compression driver) the only thing I didn't like was the price ! (so I went for silk domes instead)
horns can also be incredibly efficient compared to cones, which helps relatively lower power class-A valve amplifiers.
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Sulaiman wrote ...
horns can also be incredibly efficient compared to cones, which helps relatively lower power class-A valve amplifiers.
Yep, a friend of mine has a pair of 30's horns salvaged from an old theatre, they sound fine in his flat, not too bassy, and he reckons his amp draws less than one watt (It's the 'Mighty Atom' amp I posted here around a year ago).
I think I can say with reasonable confidence that it's the best setup I've ever heard in somebody's flat.
Edit: If you're the other side of the pond, for 'flat' read 'apartment'....It's a 'tube/valve' thing
EDIT 2: Incidentally, push-pull will have less distortion at the same power level than a single ended amp 'THROUGH THE SAME OUTPUT TRANSFORMER'. A single ended amp needs a bigger OT for the same power, or it needs to be operated in conjunction with a large choke (gapped, 50-100 Henries, and at least 100mA) in a 'parafeed' setup.
EDIT 3: This is the 'real' advantage of 'push-pull', as far as my present understanding goes...
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Low power tubes
