| Re: Horns [message #93255 is a reply to message #93252] |
Sat, 06 March 2021 16:54  |
johnnycamp5
Messages: 354
Registered: June 2015
Location: NJ
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Grand Master |
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Thanks Wayne.
They (PE) sent me a 16ohm and an 8ohm compression driver so I had to get that straightened out first.
I only attempted this build since the horns go from 300Hz to 20,000Hz. (Really 350-18,000).
I would never have attempted had I needed to build a passive crossover at frequencies north of 500 Hz. I do not have the confidence/technology/knowledge yet.
It's more of a "woofer enclosure build with horn dropped on top" build, not a "loudspeaker" build lol.
The JBL's are bandpassed from 45 to 450 Hz. using the Crown amp DSP.
Subs are low passed at 100hz using another Crown.
I had to pad down the CD's with a 25ohm resistor (series) to better match the 2226.
Then I just EQ the response once I had all the gains fairly matched.
Sounds real good now, more balanced and uniform than it has a right to, beings how I threw this thing together!. I'll try and post up a 1/12 smoothed FR at the listening position.
There are four subs across the front wall/floor laterally (one under each midwoofer and two towards the center) Also some new 4" thick panel absorbers. Bass response seems better than ever.
I was a bit concerned with the mid range from the CD, as sometimes they can be a bit edgy (Didn't they used to call them squawker's?) but things have smoothed out substantially and I'm quite pleased.
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