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The "suck-out" at ~700 Hz is classic of the big JBL 2 and 3-way horn systems and gives the voices that "veiled" effect. The exponential horns also have other anomolies. This is the reason I got...

I have no experience with a 251J. But I have plenty of experience with the 2251J and ~300 Hz is about the ideal crossover point for that woofer, and is where JBL crossed them over in their 4-way...

Not bad.

This is in the greater LA area. Tempting, but really no room and unnecessary.

This is for a pair (2 cabinets with 4 drivers) in an interesting arrangement. You just don't see 2245s...

I thought that it was very good of them to mention that although the speakers have high sensitivity, they may not be ideal candidates for tube equipment. I don't ever recall seeing this...

No clicks on the crossover. It's just continuous between the stops.

Mine are ~15.5 cu ft exterior dimensions. IIRC, they were speced at 12 cu ft interior volume. Shapes varied.

For those who read Stereophile, and those who don't, there is a very interesting artical entitled The Devon and Marlow Excitements. Look at the picture on the bottom left side of Page 29. The sharp...

Here you go! After all, this is LA.

https://images.craigslist.org/00C0C_cPj6oZDXhy5z_0fu0bC_1200x900.jpg
https://images.craigslist.org/01313_eQNye8sJ6Phz_0fu0bC_1200x900.jpg
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If you listen to Ambrosia, they recorded at Momma Jo's studio in North Hollywood on Altec Super Reds. We had rented the studio right after them and some of the equipment was still inplace (e.g.,...

Probably the signiture of the horn that can't be helped except with eq.

The gentleman who was at OCS now has his own place and he took the magnet gausser with him. He still does the same great quality work.

http://www.speakerrepairpros.com/

Because I have the ability to move the 2251 and Heil AMT relative to the 2241 and each other, I have found that time alignment can make a big difference in frequency response in the crossover region...

Thanks.

My crossover looks nothing like the one AudioTechniques sold and shown on pages 115 and 117.
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Not a Time Sync. Mine does much more.

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When I acquired my Super Reds with the electronic crossover and eq units, I knew they were something special (rare) but could find no information on them. Someone saw them on AudioKarma and...

Amazing to me how two "10-inch" cones are not as wide as a single 18 inch cone. As I noted in another post, you can't use 10" in the Weems calculations :nutz:
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You need to take the "10 inches" with a grain of salt. I just measured the actual radiating area, including the accordion surround, at 8.4 inches for the 2251J. It will not fit in the typical 10"...

Been there fixed that. I created diffraction lenses for the Heils to remove the peak and smooth out the very top end. BTW, I also block the rear wave with a piece of acoustic material attached to...

Never heard of a 251J and don't see specs on it anywhere though the cooling fins look to be substantially longer than the 2251J.

The 2251J is a nice match for the Heil and while an MTM would be...

Thanks.

Yes, the goal is the best possible sound, to taste, using what's available.

I agree that some measurements would be better obtained over a slightly larger area. But some measurements...

Location can vary a bit, but unless doing nearfield testing, is proximate to where my head would be located at the couch. I know that minor variation in the crossover region can manifest itself in...

Thanks Ian.

I simply set the mic in the listening position because that is the only position that really matters to me. Yes, the 10" and Heil sum at the crossover point and proximate frequencies...

Or you could take the easy way. I have a pair of 3115s (not A's) I would part with.

Thanks,

A nice feature of the Behringer is the ability to control the "averaging time" to basically do what you did over the 1 minute period. There is no need to follow the "bouncing ball" and...

Thanks.