K&K Audio / Lundahl Transformers

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Can LL1948 be Used for 2:1 Stepdown?

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Posted on November 6, 2014 at 19:23:19
Maxamillion
Audiophile

Posts: 856
Location: New Jersey
Joined: May 26, 2006
 From a 2V nominal source at the input of a preamp? I suppose that could be done with primaries in series and secondaries in parallel, correct?

If so, would there be any sonic benefit versus an LL1676 in the same arrangement?

 

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RE: Can LL1948 be Used for 2:1 Stepdown?, posted on November 7, 2014 at 04:49:53
KevinC
Manufacturer

Posts: 2984
Location: NC
Joined: April 19, 2001
 It is possible to use the LL1948 for 2:1 service, but it's also possible that there will be wiggles in the high frequency performance due to the increased stray capacitance that paralleling results in. Such a phenomenon does occur with the LL1690, but the LL1948 has fewer turns of wire, so it might be small enough to ignore. The LL1676, however, will not suffer from that effect, because it can be used 2:1 with all windings in series.

Kevin Carter
K&K Audio
www.kandkaudio.com

 

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