| Project JBL [message #47017] |
Thu, 02 June 2005 15:22  |
Jerrod Harden
Messages: 38
Registered: May 2009
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Baron |
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Hi guys! I've had these going for several months now. I was waiting to get some better quality pictures to post, but hadn't gotten around to it.
I leaked a few photos over at Doc B's, so I wanted to give a sneak peak here. From the bottom up...2226J's, 2123J in a conical midhorn, 2426J/2370A horn, and 2404H. Crossover points are 200@12db/oct.,1.6K@18db/oct.,and 20K@6db/oct. The three horns are tube powered and are 106 db. efficiency. The woofer cabinets are solid state powered and 100 db. efficiency. Not pictured is the new sand bases that the speakers now rest on. I'm currently building Paraglow II's, and a Seduction phono preamp. I recently completed the hemi-orange Foreplay III with Mundorf caps under the hood. Lots of big projects for me, better get to it! Thanks Wayne for the Pi inspired midhorn design, the speakers are sounding fabulous. They are very civilized, perhaps even refined sounding, but never, ever timid. Great scale and dynamics with a sense of subtlety. Make any sense?
Take care! Jerrod
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| Re: Project JBL [message #47038 is a reply to message #47024] |
Fri, 03 June 2005 14:23  |
Jerrod Harden
Messages: 38
Registered: May 2009
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Baron |
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Thanks Russell! I built the midhorns following the information Wayne has provided on the forum. I used the same throat size and expansion angles, but the mouth is slightly larger than spec. I was attempting to lower cutoff slightly without sacrificing the response at the upper crossover frequency. It was a very successful gamble. Are you considering building a pair? Regards, Jerrod
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| Re: Project JBL [message #47042 is a reply to message #47038] |
Fri, 03 June 2005 21:14 |
Russellc
Messages: 397
Registered: May 2009
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Illuminati (1st Degree) |
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I have a pair of 2225H woofers, 2123H mid drivers and 2425H compression drivers, all 8 ohms. I plan to build the 7 Pi 3way with the mid horn.
Your project sure looks nice, but I would have to aquire 4 16 ohm bass drivers, and I wanted the 7Pi since they are only 18 inches wide and stick in a corner. But, I have room for those, I am currently using A-7 with 828 cabs and they are plenty big! With four woofers like that those speakers of yours must flat slam! Really a cool set of speakers. I wasted so much time and money on "high end" speakers that imaged well, but had no soul nor the fun factor of high eff. horns.regards,
Russellc
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| Re: Project JBL [message #47048 is a reply to message #47042] |
Sat, 04 June 2005 06:58 |
Jerrod Harden
Messages: 38
Registered: May 2009
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Baron |
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Hi Russellc, I intended on replacing the the 4 2226's with a pair of 2245's, but my plans have changed. The 2226's are very "real" sounding, great transient response and definition. Also better efficiency. Response is augmented by an Audio Control Richter Scale bass eq to smooth the response from 125 hz down. It's a pretty simple bass setup, but one of the better ones I've heard. I suppose the old drag racers adage of "There's no replacement for displacement" runs true. Get those 7 Pi's together, you will enjoy them!
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| Re: Project JBL - 2012 vs 2123 mid horn? [message #47053 is a reply to message #47052] |
Sat, 04 June 2005 13:48 |
Russellc
Messages: 397
Registered: May 2009
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Illuminati (1st Degree) |
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Actually, the 2012 is just a modern version of the 2123H. I bought All 3 of the drivers like this, 2225H instead of 2226H, 2123H instead of 2012, and 2425H instead of 2426H. In all three cases they are virtually identicle in performance, very minor if any differences, just these are older models. Cick "vintage" onthe JBL site to compare numbers. I chose them because they are usually, or at least in my case were way cheaper than the newer versions used, and WAY cheaper than buying the new versions "Brand New". My compression drivers and bass drivers are in very good condition, and the mid drivers were new old stock, still in the box. I paid slightly less than half total than what I would have been paying for all brand new. The performance is the same. Any more, used market prices for both seem to be converging. These drivers also just happened to become available when I was buying them, I would have bought any of those mentioned, they just popped up. The prices were great at the time, thats all. If money were no object, I'd just order all the new versions right from wayne, cheap or cheaper than the others, service A+ and there's this forum to communicate on. I also happened to get OEM versions of all the drivers, stamped on printing of the model # w/o all the fancy stickers. For whatever reasons, these versions don't bring as high of prices. Some don't understand what it is, and are not familiar enough with the drivers appearance and are suspicious. Whatever, I wanted an all JBL & pi, and this is hardly more expensive than getting the base eminence drivers, which are fabulous bargins BTW. Russellc
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