Home » Sponsored » Pi Speakers » Ever heard of JBL 2122H?
Ever heard of JBL 2122H? [message #45538] Sun, 10 October 2004 12:40 Go to next message
Russellc is currently offline  Russellc
Messages: 397
Registered: May 2009
Illuminati (1st Degree)
Hello, seller claims these came out of JBL 4344 and 4346 speakers.
Can these be used in place of the 2123H with success?
Thanks,

Re: Ever heard of JBL 2122H? [message #45539 is a reply to message #45538] Sun, 10 October 2004 12:59 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18688
Registered: January 2001
Illuminati (33rd Degree)

The JBL 2122 is a 10" speaker just like the 2123. It doesn't handle as much power and its electro-mechanical parameters are different, but it will probably substitute just fine for most midrange applications.


Re: Ever heard of JBL 2122H? [message #45542 is a reply to message #45539] Sun, 10 October 2004 22:05 Go to previous messageGo to next message
GM is currently offline  GM
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Registered: May 2009
Viscount
Hmm, what specs are you using? The ones I have are poles apart and no way will they interchange without some serious compromising of midbass/LF performance.

GM

Re: Ever heard of JBL 2122H? [message #45543 is a reply to message #45542] Sun, 10 October 2004 22:22 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18688
Registered: January 2001
Illuminati (33rd Degree)

Fts is much lower than the 2123 and Qts is too. Vas is much higher on the 2122, and it can be used as a midbass or a midwoofer, whereas the 2123 really can't be. But I think Cody was planning to use the driver as a midrange, which will make bass performance less relevant. Here are the specs:

2122H Fts=40, Qms=1.9, Qes=0.26, Qts=0.23, Vas=2.3ft3
2123H Fts=85, Qms=2.5, Qes=0.37, Qts=0.32, Vas=0.7ft3


Re: Ever heard of JBL 2122H? [message #45544 is a reply to message #45543] Sun, 10 October 2004 23:47 Go to previous messageGo to next message
Russellc is currently offline  Russellc
Messages: 397
Registered: May 2009
Illuminati (1st Degree)
Thanks for the info, but as my ebaying turned out, a got a pair of 2123H after all. so I guess I'll skip past the 4Pi and do the 7 PI w/ the midhorn. Thanks for the info,
Russellc

Re: Ever heard of JBL 2122H? [message #45545 is a reply to message #45544] Mon, 11 October 2004 00:41 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18688
Registered: January 2001
Illuminati (33rd Degree)

That will do nicely, very nicely indeed.


Re: Ever heard of JBL 2122H? [message #45567 is a reply to message #45545] Thu, 14 October 2004 19:37 Go to previous messageGo to next message
Russellc is currently offline  Russellc
Messages: 397
Registered: May 2009
Illuminati (1st Degree)
Well, I think they will to. It's a fair sized investment for all JBL motors. I have been fortunate enough to stumble on some good bargins on the "older model" JBL drivers; The 2225H intead of 2226H, the 2123H instead of the newer 2013H and the 2425H instead of the 2426H. This saved about 50% over buying the brand new motors which would be nice, but a little beyond the range I wanted to spend. I still need the crossovers, the cabinets and various odds and ends, not to mention the midhorns and some kind of horn flare for the 2425H drivers. Right now they have the plastic flare for the 4 PI studio size, I believe it was model H-290. I was going to use the 2425 H and 2225H in a 4 PI, but when I got a set of the 2123H I decided to go for it with the 7Pi version w/ the mid horn. I need something else for the high frequency flares, would love one of Bill M's .... but I'll have to
wait awhile for that.

Deferring gratification,
Russellc


seven π with JBL 2225, 2123 and 2425 [message #45568 is a reply to message #45567] Thu, 14 October 2004 21:46 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18688
Registered: January 2001
Illuminati (33rd Degree)

I think you will really enjoy your seven π speakers with JBL 2225, 2123 and 2426 drivers. Use the plans I sent you for the Professional Series seven π. It will work just perfectly with your components - Box tuning, crossover, everything. The 2425 will bolt up to the H290, the 2123 will work well with the midhorn and the 2225 works well in the bass cabinet. I had a system very much like this through the eighties, and it was awesome. I think you'll be very impressed with what you have there.


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