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In Reply to: RE: Use a 2.0mH inductor? posted by Davey on February 26, 2012 at 12:56:28
I actually found my stock MMG inductor and re-measured it. Davey's measurement is correct. While changing the DCR of a driver will change the crossover freq, the small change between a 2.0mH and a 2.2mH inductor won't.
So ggking7 order away that 2.2mH Erse SuperQ!
BTW, for the $2.56(pr) difference, I'd splurge on the Jantzen caps, but that's just me. Just be sure to report back on your findings ;^)
While we're on the subject, has anyone actually made a comparison of sonic differences (if any) between copper foil, round copper wire and laminated steel core inductors on Maggies?
Follow Ups:
Rickey, at the time I made comparisons of the Erse and a Jantzen ribbon I was already heading for bi-amping and had no need to invest in any premium-priced parts. In fact, the 2.2mH ribbon was not mine and was slated for installation in a friend's set of boxes. I only had one weekend to compare. Worse, the MMGs were not yet modded enough.Under those limited conditions, the 2.2mH Erse got the upper hand in dynamic impact at the bottom. Other things sounded equally good though slightly different due to the mismatch in DCR. My friend tried my Erse after he had bought the ribbon coil and lamented that he could have used them instead. (Yet, I suspect that he was trying to make me feel good and not like the cheap bastard that I can be).
I suppose that more of a difference could be perceived if I made the tests today. The MMGs frame is reinforced with the Stixbees and are Razored.
Regardless, the Erse are a terrific value in terms of performance. I still used them if I have to break the PLLXO bi-amp. In such cases, the loss in performance and clarity is not a punishing one (though it is clear if one has heard the bi-amp.)
Edits: 02/27/12
I was thinking (dangerous, that) that the copper foils might be of benefit on the hi-pass section of a mid-range but not really needed on a two-way Maggie.
Thanks again.
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