2017年2月2日 · I have used the 2251J, 2250H and 2169H in many projects - all in various midrange horns. They are very good drivers. The 2250 and the newer replacement 2169 both work exceptionally well with their CMCD phaseplus in midrange horns in the 300-1800 Hz range.

2021年3月27日 · 2169H Thiele-Small parameters are available in JBL's 2012 parameters list (see pic). I'm assuming these numbers are correct, i.e. no typos. As for sensitivity of raw driver, the same table gives efficiency at 1.3%. According to JBL John Eargle's conversion table from efficiency to sensitivity 1.25% = 93 db (1W, 1M, half space loading, piston band).

The woofers (10" JBL 2251J) are in ~1/2 cu ft ported cabinets. These are to be used as midrange speakers with an 18" for the woofer and a Heil AMT for the tweeter I can set the crossover values to get the 2251s to better than +- 3 dBA from ~120 Hz - 4K, in my room, when the mic is placed <1" of the woofer dome, within the "confines of the cone ...

2010年7月5日 · Why JBL dances around with these different dia's I'll never know. I've been trying to obtain/verify the bolt circle for the 243x drivers to see what they'll fit of mine. The 2431 is used on "standard" PT-FxxHF horns in the AM62xx-series, but the 2432 is used on "-1" variants of the PT-FxxHF horns in the AM72xx-series.

I have a question have someone tried 14" JBL 2254J woofer for low frequency in HiFi I am making two pair of four way speaker and I have 2254j for low 2251j for mid 2435hpl for high and 045be for UHF and crossover point 300Hz 800Hz 10kHz.

I have this drivers in my speakers JBL 2254j/2251j/2435hpl and 045Be This is hornloded speakers with this crossover point 300Hz/700Hz/10kHz regards Ari[/QUOTE] Hi Ari, Can you please tell me what kind of surround is used on the 476Be? Is it diamond pattern, fabric, etc? I have not been able to find a good picture of the diaphragm.

2006年6月30日 · From JBL's Synthesis Hercules system description. The SK2100DG: Dual 10-inch 2251J-2 Aquaplas™-coated, pulp-cone woofers with 4" edge-wound voice coils and EPDM rubber surrounds, and utilizing Alnico magnets.

The 2251J drivers appears to have a flatter frequency response then 2012H drivers. And as a result, they will be easier to incorporate them into your project. Personally, I own the 2012H drivers and I have found that they do require some equalization to make them sound right.

Hey Man, that is an awesome system. From what I hear, the JBL 2251J is one of the absolute best in mid range reproduction and realism. And I have a pair of the Heil AMT's as well. Talk about sound at the speed of light! I would love to recreate a system like you have.

- Maybe someone at JBL has been reading Bo(s') refoaming thread. They must of decided that a "foamed-up" 2242(s) was the way to go. - Checkout this 15" sub ( somewhere in the Synthesis midline stuff ). Looks like a 2226h . <. Earl K