[noob] Looking to build a really, really small sub - diyAudio
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Old 2nd May 2007, 07:18 PM   #1
Lindell is offline Lindell  Sweden
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Question [noob] Looking to build a really, really small sub

Hey,

My brain is cooking at the moment. Have to get some idea's out.
I'm "building" an ultra small recording studio monitor using Raal Ribbon and dual Peerless 830856 with passive radiators.

The concept is small and portable. So I want the sub to have a really small footprint. Money is sort of no object.
Sub does not need to play loud. Freq's should be 30-100 to 150 (haven't decided yet). Sound should be very neutral, but on the 'tight' side.

I'll be using a modified DCX2496 to start with. Amplifiers will be www.coldamp.com


Woofers that tickles my mind:

Scan 23W with passive radiator http://www.tymphany.com/datasheet/printview.php?id=107

Peerless XXL 10" with passive radiator http://www.tymphany.com/datasheet/printview.php?id=27

2 x Tangband W6-1139 Sl http://www.tb-speaker.com/detail/1230_04/w6-1139si.htm

TC Sound 10-OEM http://www.tcsounds.com/forums/index.php?showtopic=1013

All inputs are highly appreciated!!


In the studio we are using FOCAL speakers SM8 & SM11. Both uses passive radiators, Class-D amps and they sound gorgeous.

Cheers,
Lindell
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Old 2nd May 2007, 08:00 PM   #2
Lindell is offline Lindell  Sweden
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Or JL Audio 8W7 http://mobile.jlaudio.com/products_subs.php?series_id=1
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Old 2nd May 2007, 09:27 PM   #3
Dr_EM is offline Dr_EM  United Kingdom
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You may be interested in my project. It's a (loosley based) copy of a studio orientated compact sub. Should have good tight bass like you want and occupies a small footprint. I'll let you know how it sounds when it's finished

PMC TLE1 style sub
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Old 3rd May 2007, 07:09 AM   #4
Lindell is offline Lindell  Sweden
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Hi Doc,

That's a nice project yer working on. I like PMC speakers, I have mixed on these and they sounded great.
However the TLE1 is still a bit on the large side for me. 65-70 litres is it? I'd like to go about half of that....
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Old 3rd May 2007, 07:36 AM   #5
AKN is offline AKN  Sweden
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Hi Lindell,

Another solution.
A small PR box (20l) with Peerless XLS 10:
http://www.tymphany.com/papers/appxls2.htm
(down the page)
Slight shelf response, perfect together with room gain.
Box will need to be heavy or it will "walk" or "jump".

This driver has lower Q than your suggested XXLS driver and is better suited for PR in a small enclosure.
__________________
/ Anders
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Old 3rd May 2007, 07:49 AM   #6
Lindell is offline Lindell  Sweden
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Tjenare Anders,

Yup your're right. XLS woofers looks very nice. I found this http://www.vikash.info/audio/xls10/

I read Tymphany's paper on the XLS woofers some time ago and PR is the way to go , no doubt.....

There seems to be little or few projects that uses the Scan-Speak 23W. One can ask if it's a better sounding woofer than the XLS or XXLS?
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Old 3rd May 2007, 08:48 AM   #7
Dr_EM is offline Dr_EM  United Kingdom
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Perhaps an electronically equalised design would fit the bill? Take a look here:

http://sound.westhost.com/project48.htm

Should reach 30Hz in your box size requirements and the cold amps can supply enough power to get it working well I reckon
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Old 3rd May 2007, 10:00 AM   #8
Lindell is offline Lindell  Sweden
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This is funny......

<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/4IHW8g3GRNU"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/4IHW8g3GRNU" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>


http://www.youtube.com/watch?v=4IHW8g3GRNU
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Old 3rd May 2007, 11:26 AM   #9
kinser is offline kinser  Israel
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Lindell,

+1 on the Peerless XLS. based on simulations, it performes very well in a small box with a PR. I am busy planing and doing some research befor i buy the XLS12+PR.
I will probbly go with 40-45L internal volume, with either 600-625g total mass on the PR (adding 200g or so). It will do 20Hz@100dB according to WinISD Pro.

Befor you buy anything, find as much info as you can on the wanted sub (I made the mistake when I built my projector, did not do enough research, i bought a cr@p LCD, with low rez 320x240)

David
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Old 5th May 2007, 08:39 PM   #10
Lindell is offline Lindell  Sweden
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They're talking about less than 20 liters with this one:
http://www.tcsounds.com/forums/index.php?showtopic=1013
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