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Multi-Way Conventional loudspeakers with crossovers

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Old 26th September 2012, 05:42 PM   #81
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Quote:
Originally Posted by tinitus View Post
ah, small differences
biggest difference would probably be Xmax
and you got the Xmax specs wrong
those are the max Xmax before final damage banging against the back pole plate
My bad. 2mm vs 7.4mm

Taking those numbers (and the new xmax) are the drivers pretty much of a muchness?
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Old 26th September 2012, 06:21 PM   #82
badman is offline badman  United States
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Neo is also electrically and thermally conductive, both of which tend to mean better motor performance.

Ferrite ceramic is an insulator. That said, the same benefits are available from shorting rings.
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Old 26th September 2012, 06:33 PM   #83
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Quote:
Originally Posted by JRKO View Post
Nice selection! There's not that much on 18Sound drivers on here. How are they regarded?
I have seen independent measurements of the cones and they were very good. I use the ND1090 and it is terrific, the first Ti driver I've ever liked.

My personal philosophy on selecting drivers is buy the best you can afford.
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Old 26th September 2012, 06:47 PM   #84
Rojoh is offline Rojoh  Norway
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18's? How controllable are 18's? the PD188 looks very serious! Would it dance nicely with 8w of class A power as well as several hundred class d? Is there any great advantage of the 18 over the 15?
If XOed low (80-160Hz), I would suggest a good 18" for bass-duty. Have been playing with single and dual PD&JBL 15", but the PD-186 in ~200L box has that little extra in the bottom without sounding loose and boomy. The PD-186 is actually a nice driver at a reasonable price.

I think the layout of JBL 4344 looks good: 18" + 10" + horn/waveguide?

I'm also on my way (slow progress) going big with JBL 2360s in middle.
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Old 26th September 2012, 07:07 PM   #85
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Didn't read the entire thread, but my "mentor" (taught me about speaker/crossover building) had some big floorstanders like these! Huge box (ported) with 15 inch JBL pro woofers, 8 inch mid-bass, and (mounted on a board above the box) horn midrange and "bullet" tweeters. He called the drivers: woofer, barker, squawker, tweeter. The horn mid and tweeter had to be "tamed" with resistors (and a baffle on the horn mid) Source was an expensive turntable and the amp was homebuilt tube (KT88) He wound all his own coils (one day I came in unexpectedly as he was winding/counting winds... he almost killed me cause he lost count) Also, his friend had monster cabinets with four 12 inch woofers, two 6 inch midrange, and a bunch of tweeters down the middle. Source was turntable and he used two amps (one transistor, one IC) bi-amped with homemade active crossover. Those were the days! The guy with the JBL had amp and turntable in another room, and his friend simply suspended a board from the ceiling with a woven "plant hanger" to isolate turntable. This was over 25 years ago
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Old 26th September 2012, 07:21 PM   #86
VT67 is offline VT67  Belgium
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Now this is an interesting thread. A few years ago I built a pair of Iwata horns designed for a 2" driver. Up until now I haven't found a suitable bass cabinet to accomodate these horns. The main idea was/is to keep it a two-way system. Suggestions are welcome. As you can see in the picture they serve as a printer stand and collect dust

Regards
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Old 26th September 2012, 07:29 PM   #87
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Quote:
Originally Posted by Cal Weldon View Post
It's also only a 'medium' when we want a 'Really Big'.
medium? medium? You crack me up Cal - you're one serious BIG speaker connoisseur

Quote:
Originally Posted by Rojoh View Post
If XOed low (80-160Hz), I would suggest a good 18" for bass-duty. Have been playing with single and dual PD&JBL 15", but the PD-186 in ~200L box has that little extra in the bottom without sounding loose and boomy. The PD-186 is actually a nice driver at a reasonable price.

I think the layout of JBL 4344 looks good: 18" + 10" + horn/waveguide?

I'm also on my way (slow progress) going big with JBL 2360s in middle.
Yup I'm liking the PD 18x range. And the 4344 does look nice!!

A 2360? That things HUGE!! I bet you could walk around inside the soundstage they project
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Old 26th September 2012, 08:20 PM   #88
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I love big speakers. Here are my DIY JBL/Altec's. JBL 2235H, Altec 802-8G, altec 511B and JBL 077.
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Old 26th September 2012, 08:24 PM   #89
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Here are my JBL C50 with custom CNC horns.

Click the image to open in full size.
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Old 26th September 2012, 08:37 PM   #90
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Me jealous. Me really jealous.

Me have idea.

Wife not gonna like this.
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