They're trapezoid so they can be placed next to each other at those angles with predictable sound dispersion and control.Originally Posted by clubman
John
They're trapezoid so they can be placed next to each other at those angles with predictable sound dispersion and control.
John
Aren't the 2370 horns constant directivity horns, therefore needing CD equalization?
I have constructed and made a 2226H (nominal 8 ohm) and 2425J (nominal 16 ohm) network with CD compensation for the 2370 horn. See networks and frequency curves below.
Very nice sounding for a small PA. +/- 2.5 dB from 60Hz to 15k. Hope someone can use it.
(Sorry for the bad quality picture),
Sweet....like the grilles
Need some for mine!
May we know R1031, the DCR of L1031, or other, please?
Yes, it's the DCR of L1031. Forgot to put that one in the list.
Obviously as low as possible, though values betweeen 0.1 and 0.3 ohm doesn't make much difference. (About 1/2 dB at 12 kHz). The tiny, little 0,05mH inductor I use, has a DCR of 0.25 ohm.
“Stupid loud” nah, you mean Just Bloody Loud! I bet that glass window vibrates like nobody’s business.There's your start, then.
I have that running here, but I've never measured the response.
Party speakers. They'll play stupid loud:
Why not use a tone and obsolete it till the window cracks.
Thank you. I may build it up to see how it works in 4691B with 2226H.
Is that actual measured system response you show, or the simulation based upon the individual driver responses?
What is the software, please?
Yes - if you build them, please let me know what you think!
The response shown in my prevoius post is the simulated response (because that was what I had easiest access to). Below is the simulated response (in red) shown togehter with actual measured total response (black). Quite good correlation - though I just might back up on the 7-10 kHz level by reducing C1031 slightly - to 1.8 or 2uF. Haven't gotten around to actually desolder the crossovers yet
The (both simulated and measured) wiggles at 500-700 Hz are probably baffle diffraction effects. Other baffle widths might need adjustments on the LCR R2031-C2031-L2031 in the woofer circuit.
Just for fun, I also show a distortion measurement at about 96dB SPL at 1.40 m distance. Light blue is 2nd harmonic, red is 3rd harmonic. Nice, low figures.
I use lspCAD for simulation, justMLS and ARTA for measurements.
Thank you for the additional detail.
I agree the peak at 7 - 10 kHz is probably making them "bright" sounding, and I would adjust it, as well.
My stock systems are a mess by comparison.
I have a second set of empty cabs right now, and will likely build them up this summer. Thank you for posting your crossover design; I will definitely be trying it....
Mine are very "bright" sounding, and I am using the stock xover. I might try out this one to see if its any different sounding. Although I am very pleased with mine now. I just dump what ever I don't want on the eq. And yes they play stupid loud!
Why not just biamp the box? Call it a day.
smk
One step above: "Two Tin Cans and a String!"
Longtime Alaskan Low-Fi Guy - E=MC˛ ±3db
2370A is tricky when it comes to HF compensation. It's not supposed to need it, but it does.
2226H also has some anomalies that need addressing to sound best. The passives in SR have gotten more and more sophisticated since the original Cabaret designs.
Can it all be done digital? Sure. Sometimes you just want to plug 'n' play the simple stuff, tho, and if a tweaked-out passive can do it as well, why not....
10-4
One step above: "Two Tin Cans and a String!"
Longtime Alaskan Low-Fi Guy - E=MC˛ ±3db
Hey, care to elaborate on the 2226h anomalies and crossover work? The filters in 4725 and 4725x both seem to be very simple filters on the 2226h.2370A is tricky when it comes to HF compensation. It's not supposed to need it, but it does.
2226H also has some anomalies that need addressing to sound best. The passives in SR have gotten more and more sophisticated since the original Cabaret designs.
Can it all be done digital? Sure. Sometimes you just want to plug 'n' play the simple stuff, tho, and if a tweaked-out passive can do it as well, why not....
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