SE output transformers

[Colossal]

Have you guys ever heard of a single-ended output transformer's so-called "tuning" being spoiled by the addition of end bells? Not taking into account the size and mounting arrangement (2-hole A-frame vs. 4-hole), some SE OTs such as those made by Edcor and Heyboer have them, and others do not. Ignore cost as an issue. I am trying to discern the technical reasoning behind such a statement.

[Jana]

Oh, absolutely. The addition of end bells totally screws it up. It's much better to pay a higher price for a specially wound OT without the end bells (translation, let's charge more for a transformer that costs less to produce but advertise it with magic pixie dust).

In all seriousness, lol, like I have ever been serious, I suppose it is possible that end bells *might* alter the flux lines a bit. But, I sure wouldn't worry about it.

Now if we were discussing wire color, that is another matter altogether.

[Colossal]

Oh, absolutely. The addition of end bells totally screws it up. It's much better to pay a higher price for a specially wound OT without the end bells (translation, let's charge more for a transformer that costs less to produce but advertise it with magic pixie dust).

In all seriousness, lol, like I have ever been serious, I suppose it is possible that end bells *might* alter the flux lines a bit. But, I sure wouldn't worry about it.

Now if we were discussing wire color, that is another matter altogether.

Haha, awesome Jana. I won't hold you to a lapse in your usual seriousness.

Yeah, the only case I could possibly make for not using end bells is that the field lines are perturbed and we mustn't perturb the flux. What the flux?

[Leo_Gnardo]

Somebody's got a lot of bells to suggest such a phenomenon exists.

I think they got bells in their batfry, a lotta free time & too much caffeine.

Now wire color, that's another thing. Everybody knows electrons prefer yellow.

[Phil_S]

Put a flux capacitor under the end bell.

[Colossal]

You guys...

Phil, if we put a flux capacitor under the bell, we will shunt all highs to the adjacent universe and things would be very dull and uninspiring tonally. The ultimate Zobel filter

[matt h]

(deleted)

[darryl_h]

Have you guys ever heard of a single-ended output transformer's so-called "tuning" being spoiled by the addition of end bells?

I've never heard of this phenomenon, but I'm sure the issue is alive and well on valve/tube hifi websites.

Disclosure: I prefer the dark tone of black plastic insulation - especially for heater wiring.

[Colossal]

Flatulent topologies stink. I think the dentist said I had fluxorrhea.

[Structo]

For top performance a transformer must be gold plated.
The leads from the transformer must be made of silver.

A large decal on the transformer states "Demmacs Tech"
Even spelled backwards it is impressive.

Gold doesn't tarnish so the transformer could, theoretically last 1,000 years.

The price to be determined.

[Leo_Gnardo]

End-bells can be viewed as stealth-ringage-harvesters, pooling the transformers ringing outwardly through the flux-dump, also known as fluxorrhea.

Good point. I'm surprised we haven't yet seen extra metal bits spot welded onto the bells similar to heat-sink "wings" added to output tube plates, to make them, uh, more aerodynamic I guess, and able to dispense heat via noise-making like on a jester's hat.

darryl_h it's perfectly OK to use dark insulations on filament wires as they're really concerned with no more than 60 Hz; bandwidth beyond that is wasted.

April 1 draws ever closer.