16 vs. 8 Ohm Taps on SET Amplifier (Drive Units)

by Bert , Tuesday, December 05, 2006, 09:44 (6346 days ago) @ Cappy

Hi Bill,

I know when it comes to impedance issues things are not straightforward, but I would still appreciate comments and experiences on 8 vs. 16 ohm taps for the AER MD3.

I have always used 8 ohm taps for the MD3's, never a problem with that.

Probably less optimal in terms of output power of the amp which is then a bit limited but it is not just about power ratings (500mW is already enough!) and linearity of the output tubes but more the quality of the transformer and the flexibility of the design itself.

Note that the AER is not 16 ohm from 150Hz to 20kHz, it varies as all speakers do. If the amplifier can't handle impedance changes very well then the design is not good, the only solution for such amps is to correct the impedance flat for 8ohms or so... (adding parts to the signal).

Ciao,

Bert

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BD-Design - Only the Best!

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