TC Sounds LMS-R 15" or DC Audio Level 4 15"?

[SmoothSQ 10+ year member]

^^^you can make both boxes out of one sheet of MDF...

That would be nice, but I don't have any of the tools that I would need. I also live in a high-rise apartment building, so I wouldn't have a place to cut the MDF and construct the boxes //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[SmoothSQ 10+ year member]

Hey one last question.....

If I decide to get the AV15-X, I have two choices, dual 2 ohm or dual 4 ohm. The dual 4 ohm has less BL/Re. What would that mean for me?

Would the dual 4 ohm version perform noticeably different than the dual 2 ohm version because of the lower BL/Re?

If I decide to go with the AV I'd rather have the higher impedance, because my amp puts out the same power from 1 - 4 ohms. But if less BL/Re would be a step down performance wise, relative to the dual 2 ohm, then I won't consider the dual 4 ohm.

Please answer this^ for me. Thanx //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

**EDIT** I was wrong, it's virtually the same for the dual 4 ohm and dual 2 ohm versions. BUT, the LMS-R has more BL^2/RE than the AV15-X does. Does that mean the LMS-R will hit harder or be louder? Will that higher BL give it an advantage over the AV in any way?

 

[Papermaker85 5,000+ posts]

i like you use this formula for finding out true motor strength.. you do BL^@/RE/mms.. this gives you an idea of how much force you have for a given amount of mass.. you can factor in how much force it takes to move the spider (CMS which tells you how much force its takes to reach a given excursion) you can understand how the plots/programs work..

ill use to 2 woofers as examples..

AE AV 15.6^2/3.2/200=.38

TC LMS-R i cant find any more parameters for the lms-R im going to say MMS is 375 and BL is 21 so..

21^2/3.93/375 .299 hence the AV is alittle more efficient..

honestly ethier woofer will do justice.. if you want the driver with abit more topend Id go with the ae if you want more lowend the lms..

 

[SmoothSQ 10+ year member]

I just did something that gave me the answer that I needed.

I modeled the AV15-X, and the LMS-R with my dual Infinity 12" setup, and kept in mind what I like and don't like about the frequency response from my 12s.

My 12s, with the "low q" insert, have great upper bass extension but they don't have enough low-end for me. So I don't need a sub that is any louder up top than my 12s, I just need something that is equally loud up top and has a few dbs more output 50hz and below.

WINisd showed my 12s having more output than the LMS-R from 60hz and up. The LMS-r basically took a nosedive on the graph immediately after 68-70hz, lol. But the LMS-R had signifcantly more low-end than my 12s.

The graph showed the AV15-X having about 1.7db more output than my 12s @50hz, and that advantage lessened as the frequency rose until the AV and my 12s were dead even @80hz. The AV's low-end output advantage increased as the frequency decreased and reached 3db more output @30hz.

So the AV15-X looks to be exactly what I need. It's slightly louder than my 12s on the top end and significantly louder than my 12s on the low-end.

That should sound pretty balanced in my car.

Btw, the output was measured using a 600 watt power source, which is the minimum that my amp will put out at full blast. At maximum SPL / sub's rated power, the AV's output advantage increased a bit more.

The AV15-X it is then. Time to make my purchase, FINALLY //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Thanx for all the help guyz.//content.invisioncic.com/y282845/emoticons/thumbsupwink.gif.129404938effda6ad9cca39e7f4b58a3.gif