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Old 26th August 2009, 02:57 PM   #1
Asdonk is offline Asdonk  Netherlands
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Location: Netherlands
Default Peerless xxls12 835017

i have the nex XTZ passive 99w12.18 P subwoofer
it uses the peerless xxls12 aluminium woofer, model 835017

there are 2 tubes in it , about 65 liters internal volume
the first tube is about 24 cm, the 2nd is a bit longer
i will open up this subwoofer to tune it in the best way
the subwoofer will be used for stereo and i am using the XTZ
subamp 1 with DSP

which off the 2 tubes will give the best results ?
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Old 31st August 2009, 09:38 PM   #2
bjorno is offline bjorno  Sweden
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Originally Posted by Asdonk View Post
..which off the 2 tubes will give the best results ?
Hi Ralf,

IMO, I would close both ports. If you put a Peerless 835017 in a 65 L box you are normally up to designing a closed box and not a BR.

If one of the port (4) is closed the other would be about 32 (81.3 cm) and too long for a good passive design( See the submitted pictures).

Why not DIY a T_TQWT that uses the full potential of the driver?

Attached Images
File Type: gif 1-Ported 65 L-Peerless_835017.GIF (35.2 KB, 409 views)
File Type: gif 2-Peerless_835017_T-TQWT.GIF (172.7 KB, 403 views)
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Old 2nd September 2011, 12:41 PM   #3
Asdonk is offline Asdonk  Netherlands
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Join Date: Jun 2004
Location: Netherlands
Old thread, but at the moment I have 2 off these xtz subwoofers.

XTZ has a 500 watt Ice class D amp put on the market and the active version
is called 99w12.18 Ice

So much better using 2 subwoofers instead off a single subwoofer.

DSP is managed with a Antimode 8033 C.

I am considering a 3rd subwoofer.

Last edited by Asdonk; 2nd September 2011 at 12:48 PM.
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