Limited Excursion X15 Power Handling

[Demolitron 0]

So, I've got a question regarding the power handling capability of the X series 15" sub.

I'm building a Tapped Horn that's going to load the sub down at 25hz and 60hz. I am expecting to see maybe 5mm excursion @ 400 watts at those two frequencies with a max excursion of 14mm @ 30Hz. My question would be, in your guys' opinion, will I burn up the VC because there won't be enough motion to cool the coil off?

This whole project is a bit of a technical practical to see how low and loud I can go. The tapped horn should give me excellent low end extension into ~20Hz and keep the coil in the gap @ 400watts.

Just wanted your guys' opinion on the power handing capacity.

Thanks!

[onebadmonte 235]

You should be fine. If you want a little added insurance you can spring for the BP option. That should give you additional cooling around the voice coil. Sounds like an interesting project, keep us posted on how it works out for you.

[NDMstang65 403]

Not sure how that would do in a tapped horn..those things are pretty tweaky when it comes to t/s parameters...

[Demolitron 0]

Thanks for the input!

Regarding the T/S and TH enclosure... yeah, hornresp and I are becoming good friends, and MDF and I are going to get even closer! I see a lot of build, test, rebuild, test... Three X15's in a 30 cube TH enclosure gives me a "simulated" 130dB @ 20hz with half space loading (~flat up to 80Hz). The X15's will be parallel wired and driven with 1200Watts @ 1.9 Ohms. At 20hz the excursion will be ~ 17mm so the distortion should be "okay". I hope to see 140+ dB @ 20Hz with only 1200Watts. Take that popped into the cab of a Sierra 1500 via a blow-through, add cabin gain and eighth space loading, then hand out diapers before turning up the volume.

I'll post my test results once I get something built. I hope my patience lasts long enough for me to get it all "right".

Thanks again.

[trod2902 26]

Sounds nasty!

[CrazyKenKid 64]

nice tappered horn box! post some pics or a design you have in mind!

here is my box, will yours look similar? and be sure to make everything parallel, by using shims or 1.2.3. blocks and such! I know I most likely didn't have to mention that but I thought I would type it anyways! lol

in that box is 2- Sundown Audio 12inch Night shades V1 with 4 sundown audio Zv3.0 spiders

[jonbearsmt 919]

whats this project for? location of insatll and whatcha doin..

im just wondering.