300B what output transformer Sowter or Lundahl?

[Arno Pf]

Need some transformer knowledge/experience here.

After a lot of reading I was thinking to get the extra Iron of the 6.4kg M6 Sowter SA08 SINGLE ENDED OUTPUT TRANSFORMER

Checking the C-core Lundahls it seems to be the better concept http://www.lundahl.se/pdfs/datash/1620_3_7_9202.pdf However..."only" 2,5kg.

Does the sowter have to compensate the different EI concept with 4kg???

Any experience on the different brands? Or even these specific types ...performance in LF 10..20Hz....XX Watt?

Sowters look better on top of the housing (with electronics inside) whereas the lundahls do not look nice....but this aspect should be minor in the decision.

Thanks,

Arno

[Rod Coleman]

Originally Posted by Arno Pf

Need some transformer knowledge/experience here.

After a lot of reading I was thinking to get the extra Iron of the 6.4kg M6 Sowter SA08 SINGLE ENDED OUTPUT TRANSFORMER

Checking the C-core Lundahls it seems to be the better concept http://www.lundahl.se/pdfs/datash/1620_3_7_9202.pdf However..."only" 2,5kg.

Does the sowter have to compensate the different EI concept with 4kg???

Any experience on the different brands? Or even these specific types ...performance in LF 10..20Hz....XX Watt?

Sowters look better on top of the housing (with electronics inside) whereas the lundahls do not look nice....but this aspect should be minor in the decision.

Thanks,

Arno

I have used the SA08s for 12 years. The sound of the amplifier with 300B is VERY enjoyable. The large size does not appear to affect the excellent sound of the trebles. I don't use a woofer, but the massive over-rating of this OT should mean they are good here. But I can say that bass instruments 'keep time' very well.

Also note, these transformers are tested at 2500V, so you can experiment with higher voltage DHTs in future.