Magnepan 3.7 attenuator resistors?

[audiot servant]

Originally Posted by dpod4

Here is a vote for the duelund cast resistors. I have been using a duelund cast .6 resistor in my 3.7 tweeters (better by a wide margin to stock resistor partly because stock was dampening down too far). For jumper cables I bought the cardas GR jumpers for midrange and tweeter...better than stock - Smoothed things out almost like a resistor. But combination I am running now and like a lot is duelund .6 cast resistor (from partsxpress) in tweeters with custom Maggie jumpers from empirical design in the midrange when running CJ 350 amp (when running VAC tube amp may replace the resistor with jumper after Maggies break in).

Below is the note to me from emp designs owner - his obsessive attention to detail sold me. Super good guy to deal with. Jumpers align with fast open Maggie sound.

"Darrin,

I have indeed fabricated custom Magnepan jumpers for several customers. In order to avoid frequency-dependent phase shift due to skin depth, the jumpers are simply made of mil-spec PTFE Telfon insulated silver-plated copper wire, with the exposed ends doubled-back and tinned with silver solder.

Fortunately the Magnepan set-screws are long enough to compress the tinned ends against the opposite wall of the sockets when tightened snugly.

I recommend 18 gauge wire for the midrange jumper, and 22 gauge wire for the tweeter jumper, which insures that all phase shift is outside of each driver's effective passband.

Cost is $10 for each 4" jumper; i.e. $40 for a set of four jumpers, plus $6 for Priority Mail shipping.

Thanks for your interest in Empirical Design; just let me know if you'd like to order a set of the jumpers.

Sincerely,

Karl"

Darrin - put in an order with Karl for a set of Empirical Design jumpers for the 3.7s.

I got a confirmation email on the 25th of December from Karl saying a set of his musical wires had been dispatched and were winging their way to me... sure he must have been wearing a big red suit at the time... what a fantastic joy he has been to deal with... many thanks for the recommendation... the Maggies look forward to getting their new jumpers - they are a christmas present just for them because they have been so very good this year.

Graham