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In one of the studios there was a speaker system, JBL something, two 15″ bass drivers, probably one . 4th midrange driver: JBL H Go to measurements. The H are not aquaplased as the H’s. How are their sonic character? I’ ve been told that JBL would have to come up with a four-inch. I’ve got a couple of JBL h drivers that I’d like to use in mid range horns. They would slot in between a JBL h L/F and a 1′ HF CD/horn.

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Getting the Hz range right is what counts. Now, the only thing to do is to set up the drivers on suitable baffles and make a crossover with a flat frequency response. Ibl ivica We can see the system plots posted there certainly doesn’t appear to be any serious issues.

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Bad CDs and vinyls will sound just what they are! Bottom line is either one is a damn fine speaker in their own right.

Whether this will be useful in crossover design is to be seen. Well, here it shows up, the UPS driver cradling the sorriest looking box I’ve ever seen come off a truck. If you want to use an attenuator for the horn, increase R13 to Ohm and insert the attenuator like this:.

JBL H 10″ 8 Ohm Loud Speaker / Mid Range Driver | eBay

Jl damn near a year. The fifteen is thoroughly capable. JBL H midrange driver. Here’s a little gem we have in the Library that compares the and All of a sudden I found out I had tightened the straps so much the cabs started bulging on the middle being mm wide.


The second driver in line for midrange is the 10NW You ubl see a jog where the crossover point is in the DI curve and notch in the off axis FR but nothing all that terrible. The horn and the tweeter only takes jjbl few uF of good caps. If run fully passive from one amplifier, minimum impedance will be 3. Preparing the two upper braces with midrange cabinet. All fillets in place.

It took me a long time to take my eyes off the 10NDA midrange driver, because it can do wonderful things, but I was never happy with the crossover complexity to make the driver do what I wanted. Bi-amping is highly recommended if no Hypex module is used passive version.

The rise in SPL above Hz calls for some equalisation to make a smooth midrange, but it can be done with a notch filter. Routing for the Hypex modules.

Whatever helps you sleep at night One afternoon I was sitting in Steve Schell’s back yard down in Long Beach having an ale and Steve had a wonderful story to tell on what they tried to do with the 2123b by making it smaller.: These cabs are not done over the weekend!

This tweeter is suitable both as a regular tweeter above 4 kHz and as a super-tweeter, should to fancy frequencies above 30 kHz. Most of we diy’ers do not have access to an anechoic room for full-range measurements from Hz. The horn had a foam gasket. As long as the re-cone kits don’t dry up you can essentially build yourself a factory fresh pair. Not easy to my experience. Not bad at all!


Images : JBL 2123H

There are two key ingredients in a 4-way system like this, the 10″ midrange driver and the compression driver plus jbp. United States and many other countries See details. Above impedance measurements of the two drivers.

This all look very nice from each driver measured under ideal conditions and summation calculated from an ideal point between pairs of drivers. Please read carefully before asking: Not too long ago I heard that there was a wish to make an AL version of the new FE used in the new The polar response of the woofer at the Xover point must match that of the horn or it will honk.

The losers at their warehouse tossed it in a box with some peanuts and it got pretty busted up in transit.

If I get lucky I’ll receive another one next year. The level of transparency, the ability to resolve micro-details, the “speed” of the bass, etc. Don’t forget to mirror cabinets! The key elements in all this is the 10″ midrange driver and magnificent 18 Sound compression driver and horn with its exceptional dispersion. Size matters and none of these drivers have to work hard to do the SPL.

What the Fostex adds is airiness to the overall sound, but there really isn’t much energy above 9 kHz. Add to Watch list.