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In Reply to: RE: Electro-Voice Regal lll posted by DaveV on December 17, 2016 at 16:58:32
DaveV, Here is what the bottom of the can looks like. I did try a razor knife but it snapped the blade. Didn't want to continue without knowing more about how to get into it.
Edits: 12/18/16Follow Ups:
The pic does show that the cans have the press fit bottom cover.
I'm not surprised that a knife blade broke because those covers are in there pretty tight.
That flange or apron on the bottom cover is up into the can by about 1/4 inch and is pressing against the bottom edges of the can.
I used a flat blade screwdriver with a blade flat enough to be tapped into the groove between the bottom cover and can but not delicate enough to snap when using a prying motion.
Just be careful how much you tilt the screwdriver to pry up because you can put a dent or kink into the bottom edge of the can.
Working around all four sides a little at a time is advisable or maybe a putty knife would work?
Those are nice speakers. I have a pair of similar EV Esquire 200's that I don't use right now but I will never part with in the event I end up in a small retirement condo or apartment. The size is right and they blow lots of newer expwnsive speakers out of the water.
DaveV, So, if I build a new crossover based on what is in the can I don't have to worry about wrecking the can. Just cut the can open and duplicate and forget about the can?
Edits: 12/18/16
Building a new xover not in the can would be your decision but you can pop the bottom cover with minimal to no damage to the can if your careful.
The inductors (coils) in the can are probably air core and should be reusable. Unless they really saved a buck but my 1978 EV xovers still had air core inductors in them.
The side edges of the can with the mounting flange would be a bit stronger so maybe you can confine the prying to those two locations?
Yes, the 300 has different drivers and crossover than the 200 but they should still sound good.
The 200 low end crosses over lower. I think around 400HZ and to an 8 inch cone mid driver but the high range crossover is the same at 3500HZ.
The Esquire and Regal had at least a couple of revisions. I believe the older Regal had a mid and high level pot and yours seems to have one pot, probably for the tweeter.
If that's the case you may find that if you recap with new film & Foil caps you may need to add a resistor in the mid line to cut it back a little. Maybe .25 to .50 ohms? Or it may be OK with you as is.
DaveV, It has two pots. Brilliance and Presence.
The first time I looked at the pic of the interior of the speaker I was looking at the xover and didn't notice the pot on the other side.
I thought it was strange that the mid horn wouldn't have had an adjustment too.
I just had a thought. If you don't want to use good screwdrivers, go buy a couple of cheap thin flat blade screwdrivers and lightly tap the blades into the sides with the mounting flange where the crack is between the bottom plate and side of the can. If you get the blades in about an 1/8 of an inch and tilt the drivers outwards for a pry motion, the bottom plate may just pop off.
DaveV, I'll give it a try.
I also have a pair of EV Esquires, and I agree....they are shockingly good, and well suited towards a lower powered tube amp too.
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