TH-18 Flat to 35hz! (Xoc1's design) - Page 5 - diyAudio
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Old 14th June 2011, 02:11 AM   #41
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Djim that comparison isn't really fair showing the difference between the two. What I mean is, at 1w input they seem very close. When in reality the ss15 runs out of steam wayyy before the TH-18 does. Xmax is exceeded with around 56 volts if I remember correctly on the ss15, and on the TH-18 it is nearly double that.
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Old 14th June 2011, 02:40 AM   #42
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Glad you pointed that out, m R g S r.

Efficiency, yes. Total output, no.
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Old 14th June 2011, 03:02 AM   #43
Djim is offline Djim  Netherlands
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Quote:
Originally Posted by m R g S r View Post
Djim that comparison isn't really fair showing the difference between the two. What I mean is, at 1w input they seem very close. When in reality the ss15 runs out of steam wayyy before the TH-18 does. Xmax is exceeded with around 56 volts if I remember correctly on the ss15, and on the TH-18 it is nearly double that.
2,83V isn't the same as 1watt, and yes the SS15 loaded with 3015lf will be run out even before the continue power of the TH18 loaded with 18Sound. The only reason I made the comparison was to show they can go together without issues.

4 x SS15 loaded with RCF L15P200AK's (8ohm versions) + 2 x TH18 loaded with 18Sound 18LW2400 (4Ohm version) gives all kinds of options from small to medium gigs. You can even run them from one 2 x 4000 watt (2Ohm) amp if necessary.

Or if you don't need the SPL you can run them all from a 2 x 2000W (2Ohm) amp that is also able to power 2 x 1600 (4Ohm) for two TH18's or four SS15's and even 2 x 1000 (8Ohm) for two SS15's. After a while you can expand with a second amp (if needed). That way you can create a versatile setup with lots of possibilities.

Last edited by Djim; 14th June 2011 at 03:05 AM.
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Old 14th June 2011, 03:16 AM   #44
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Sorry I just assumed 1 watt on the first sim...

Again thanks for the comparison and the info!
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Old 14th June 2011, 04:42 AM   #45
Djim is offline Djim  Netherlands
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Originally Posted by scameron78 View Post
would a peavey lowrider or one of the eminence 18" drivers work in this cabinet. i was getting ready to cut 2 of jbell's SS15, but i saw this thread. i am just looking for a cabinet to use for live band application only. so i will never need anything below say 45hz.
For 225$ you can have the P.Audio C18-650EL. It has double spider, demodulation ring, high headroom (AES 1200Watt - 2400W max), high quality build with tight tolerances and sims good in the Xoc1-TH18.

Click the image to open in full size.
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Old 14th June 2011, 04:49 AM   #46
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Great thread, I really like the folding stuff in CAD, that seems to offer better precision and tweakability compared to doing it on paper.

I wonder if the Void V18-1000 driver would work well in this enclosure?

It's priced around the same as the 18LW2400 (in the UK at least), offers higher Xmax, had a larger voice coil and also has a higher BL value so is probably another driver to consider if you can get hold of it that is.
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Old 14th June 2011, 04:59 AM   #47
Djim is offline Djim  Netherlands
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Originally Posted by MikeHunt79 View Post
I wonder if the Void V18-1000 driver would work well in this enclosure?
Me too maybe you could show us!
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Old 14th June 2011, 05:41 AM   #48
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Originally Posted by Djim View Post
Me too maybe you could show us!
Ok, I have the driver specs and the latest version hornresp downloaded, once I've worked out the S and horn path length values for this enclosure I'll post up a frequency plot.

Last edited by MikeHunt79; 14th June 2011 at 06:04 AM.
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Old 14th June 2011, 06:52 AM   #49
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Ok, I think I managed to piece together enough data to run a few sims now:

Click the image to open in full size.
The black line is the 18LW2400
The grey line is the V18-1000

The Void driver does pretty well I think, I've tried to use the similar settings to the picture in the first post, SPL is at Xmax+1.6mm using 4 speakers. I'd love to hear 4 of these in full effect with a decent amp...

Last edited by MikeHunt79; 14th June 2011 at 06:55 AM.
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Old 14th June 2011, 06:55 AM   #50
NEO Dan is offline NEO Dan  United States
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Looks like a winner, how much drive voltage to get there?
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