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In Reply to: RE: Mine had the same driver posted by rickmcinnis@dogwoodfabrics.com on September 12, 2016 at 12:01:31
Bruce gave me a copy which I have somewhere with all of my other audio paperwork but the wife re-organized and took over the office a few years ago when I retired.
Have no idea where anything is anymore. :-(
Follow Ups:
most likely 1st order...
parallel with the 2441 to knock it down 3dB to match the mid base. Just a series coil on the 12 inch in the folded bass bin but wired 180 deg out of phase with the mid horn.
My copy of the schematic had all of the drivers and wiring labeled and with it I would not have to pull things apart in order to decide what changes I might want to make.
Might have to order that Titanium Philips screw driver after all. ;-).
Edgar must have had a bunch of 40 uF caps.
One only needs half as much capacitance for a 16 ohms driver compared to an eight ohms driver. If one decides to use other caps remove the parallel and use 20 uF, though these are nominal values. You still shoudl use REW and see what you speakers are really doing in your room.
He used to specify a coil made by ELECTRA PRINT for the sub-500 hz woofer, 2.5 mH.
in parallel with the 2441 was to knock it down 3 dB and make an 8 ohm driver out of it to match the woofer?
Anyway, yes it's an EI core inductor on the mid bass driver and 2.5 mH seems to ring a bell. Been 10 years since I even though about it.
Anyone remember the nomenclature of the 12 inch JBL guitar amp driver he used for the mid-bass horn?
Found the x-over drawn by Bruce at RMAF quite a few years ago...
40uf cap then series 4 Ohm then TWO resistor parallel of 2441, a 8 Ohm and 15 Ohm.
So the 40uf cap sees about an 8 ohm driver and I'm guessing this drops the 111dB driver(with horn) down to about 106dB or close to the mid-bass bin?
Yes, it's still 2.5 mH and Jack at Electra print still makes the best iron there is.
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