View Full Version : 10 inch Peerless XLS vs XXLS Subwoofer
06-08-2006, 08:19 PM
Has anyone had any experiance with these as sealed subwoofers for music application?
I am also having problems with my calculations on box volumes. The software that i have entered it into is giving me 7 litres. Which even i recognise is wrong. If someone could point me in the right direction I would be greatfull.
(Originally posted by: Murray)
06-08-2006, 10:22 PM
> Has anyone had any experiance with these as
> sealed subwoofers for music application?
> I am also having problems with my
> calculations on box volumes. The software
> that i have entered it into is giving me 7
> litres. Which even i recognise is wrong. If
> someone could point me in the right
> direction I would be greatfull.
I used the 10" Peerless XXLS in my 37 litre Samson subs and it works a treat.
Download Unibox from here and play with the volumes <A HREF="http://www.pvconsultants.com/audio/frdgroup.htm">http://www.pvconsultants.com/audio/frdgroup.htm</A>
06-09-2006, 12:02 AM
I am building a sub with the 10" XXLS and dual 10" XLS passive radiators in a 25 liter box. What you should do is download WinISD Pro alpha, enter the driver parameters (which is kind of hard because you have to do it in a specific order - see the help file), then simulate the driver in a larger (20-40L box) with one or two passive radiators. You will get a 'droopy' response that is -5 or -6db or more down at your low frequency target cutoff. You then need to go into the EQ section and specify your lowpass filter (eg 80hz 4th order Linkwitz-Riley lowpass is typical). Once you specify the LP filter you will see it cuts down a lot on the high frequency efficiency, and you will end up with a fairly flat curve from your LF cutoff (20-30Hz depending on box size and tuning) all the way up to about 100Hz. My 25L XXLS 10" box with dual 400g passives and a 3rd order 90Hz lowpass crossover filter (which is what the yamaha this is to be used with has) is +0/-3dB from about 30Hz up to 100Hz. Depending on how you tune and box size and your LP filter you can get a true 20-100Hz sub out of this.
Hope that helps,
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