Mar 312017

This morning I’m writing the introductory part of the Lefson resistor article for Positive Feedback while listening to music, with plans to write up listening impressions on how the Lefson resistors performed in my Altec A7 Voice of the Theatre project crossovers tomorrow, and hopefully write a summary & conclusions section before the end of the weekend.

Lefson Resistor family photo: Premium (top), Supra (middle), and Ultra (bottom).

I hope to have the article finished up and published in the next week or two if everything goes according to plan.

Lefson Premium 10R resistor in the HF crossover at R5.

Something Pete Riggle mentioned in passing about his Altec A7 crossovers at a listening session a couple weeks back gave me another idea to try with the Lefson’s in my A5 crossovers, which if it works out I’ll tell you more about it in the near future.

The historic Altec A5 Voice of the Theatre loudspeakers visiting my primary music system.

While I’m writing, I’m listening to a wide variety of music with a couple of goals in mind.

Duelund DCA20GA in WRSE high-frequency crossover circuit.

The first goal is to get some more run-in time on the new Duelund DCA16GA & DCA20GA crossover wiring in the Duelund CAST crossovers for my Westminster Royal SE loudspeakers.

The Duelund DC20GA, even with no time on it, sounds great in the high-frequency crossover circuits, just as it did with interconnects.

Duelund DCA16GA in the low-frequency circuit of the Westminster’s crossover.

The DCA16GA that I wired the low-frequency crossover circuits with is behaving in more typical tinned-copper fashion, and is going through its initial roughness stage before it settles in.

I’m also tempted to try the DCA20GA in the low-frequency crossover circuits just to hear what happens. One would think that the DCA16GA would be better suited to the low-frequencies, but …

Murasakino Musique Analogue ‘Sumile’ MC phonograph cartridge from Japan.

The second goal is to get some run-in time on the Murasakino Musique Analogue ‘Sumile’ MC phonograph cartridge, while at the same time doing a little comparative listening with it and my reference Ortofon SPU Classic GM MkII stereo phono cartridge.

Bill Henderson, ‘Live at The Times’.

The Sumile phono cartridge is sounding really nice. It totally blew my mind playing Bill Henderson’s ‘Live At The Times’. It was one of those “Wow!” moments that sneak up on you every now and then.

If you ever run across a copy of the Bill Henderson ‘Live At The Times’ single that Classic Records put out some years ago, be sure to grab it, it’s really something special.

Ok, I’ve got to get back to my writing now, but there’s much more to come!

As always, thanks for stopping by!

 Posted by at 8:19 am

  3 Responses to “Jeff Checking in: Lefson, Duelund, Sumile, and the Altec A5 Voice of the Theatre Project!”

  1. Hi Jeff
    I enjoy your work here very much . I have a question about subwoofers with Westminsters ( which I also have ). I have been thinking on this for a few years . I also follow Jim Smith ( waiting for his new book to come out ) , he has sub’s on his Canterbury’s . From what I have read over the years it adds depth etc. across the whole range , not just bass. The reason I ask is that Rel have there new no.25 sub out and seems very tempting to check out . Would be very interested in your feed back , and any one else , Jim ?
    Cheers Lance

    • Hi Lance,

      Thanks for your kind words, appreciated!

      Jim Smith is the guy to answer your question, as I’ve just never experimented with subwoofers. I’m eagerly awaiting Jim’s new book & videos as well, he has such great insight & knowledge, and a tremendous talent for making it accessible to others.

      Pete Riggle has a huge bass/sub horn built into the structure of his building, and it pretty much does what you describe when he demos turning it on and off.

      Hmmm … I wonder if REL would like to send me a No. 25 to experiment with?

      Nice to hear from you, Lance, hope all is well!

      Kind regards,


  2. Hi Jeff
    When you look on there web page they recommend a 6 pack , so go all out .if only.
    cheers Lance

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