OTL Asylum

A few flash comments

82.55.233.47

In Reply to: RE: Full range is the key ingredient posted by Ralph on September 25, 2009 at 09:59:50

1) Magnets heating - to me this is not a meaningful problem as 200 mA-DC @ 8 Ohm = 0.32 W/coil (0.64 W for two coils).

2) The 'more conventional fashion' (to hook the voice coils) you are referring to will certainly destroy the perfectly balanced PP operation of output tubes.

3) Safety - The safety risks of the assembly (i.e. potential danger to the operator) are exactly the same as those of an hair dryer (or any similar home appliances): can this possibly be a real problem?

4) HUM - The proposed topology exhibits the minimum sensitivity to residual HT ripple, that is, push pull operation of voice coils (as well of all transformer half primaries) cancels out residual HT hum about 10 dB more that with 'center tap tied to ground'.
ecc230

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RE: A few flash comments - Ralph 09:59:11 10/06/09 (0)

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