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In Reply to: RE: Questions for Salectric and Lokie re P15LL posted by Salectric on March 10, 2017 at 16:57:07
I'm probably going to use the Emilar EA 175 or Altec 802Ds, if I can find some at a reasonable price.
My email is harryzweben@yahoo
I sent you an email. Let me know if you didn't receive it.
"Reasonable Price" is relative. The current benchmark is the GPA 802G at about $500 a pair. They are new and guaranteed to meet spec. If you find used 802's on Ebay you may need to replace the diaphragms ($90 from GPA) or even remagnetize them. Unless you get them really cheap you'll end up spending the same price. However you may get lucky. I found a pair of 802D's with new diaphragms for a good price from a fellow enthusiast who was looking just to get his money back.
There is currently a pair of 802D's on Ebay with a field coil conversion. They are very tempting. But with more than two days to go they are at $385/pair. I can see them going for some silly money.
The field coil conversion, may, or may not be better than the original alnico. Do not assume, because its a field coil, that it is automatically better than the alnico !!
More than a dozen RCA filed coil drivers ( MI-1428B and MI-1443s ) I have personally owned, and have passed through my hands. I was an early user and proponent of these, ( and I owned six RCA Ubangie Bass Horns, all at one time ). Today, I am VERY happy having ALTEC alnico 802Ds, remagged and GPA re-diaphragmed. YMMV.
There are other areas where we can gain performance. IMHO, "I" would NOT ever buy a magnet "converted" 802 unless I was able to A-B them in a relaxed manner, over time, on my system. No-knowing - WHAT will sound best. You better have a GOOD amp and a good source, and optimized wiring / a truly optimized crossover, when you compare 'em, to make a good determination.
My post's point is " a field coil is NOT necessarily automatically better , AND, it may be automatically worse."
See if anyone here can figure out why this might be so, technically. I know someone, very experienced with early movie theater W.E. RCA, etc, who has this figured out.
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