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Old 30th September 2009, 12:07 PM   #1
ataul is offline ataul  Bangladesh
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Default whats type of subwoofer is good

Hi friends
I collect 2pcs 5.5inch driver unit. Which is good for only low frequency output or suitable for sub woofer and I have decided to build a good subwoofer but many enquiry I cannot decide whats type of subwoofer is better with this type of woofer, I prefer transmission line but no one says this is the best. I need deep clean bass it should be broad spectrum in bass frequency. What can I do?
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Old 30th September 2009, 03:31 PM   #2
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We'll need to know what woofers you have and what their T/S parameters are before we can even start.

dave
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Old 1st October 2009, 11:46 AM   #3
ataul is offline ataul  Bangladesh
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Thanks for rep; Mr Dave, and also thanks for useful links, I will try to measure the woofer but it will be few parameters whatís I can do. Now I give some photograph of woofer
Thanks
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Old 1st October 2009, 02:13 PM   #4
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No 5.5 inch driver is suitable for use as a subwoofer. Especially one of unknown origin.

You need specialist sub drivers, you need to know the brand, and you need to know the specifications.
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Old 3rd October 2009, 08:21 PM   #5
krips is offline krips  Canada
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Look for 10"-18" drivers with low fs (<30hz), high xmax (say 12mm+).
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Old 5th October 2009, 07:23 AM   #6
ataul is offline ataul  Bangladesh
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Thanks Mr sfdoddsy for your links
Steve's DIY Dipole. Here I can get lot of ideaís I want to try to build the design give with attached file, that enclosure uses 5.5 inch driver the cone was like poly carbonate or like plastic cone. I was collecting this old enclosure with driver. Its bass was very deep and I was very wondered that all deep bass comes from port. When I closed the port the deep bass stops totally and open it, its remain back with deep bass. It was not only for subwoofer it has fixed with dome tweeter. And bass tests like 10-12inch woofers produced bass. But some how I lost them. I am 100 present sure the Daline+B110 is same design as that thing was. Thatís why I interested for TL enclosure and also I have 5.5inch driver.
thanks.
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Old 5th October 2009, 01:47 PM   #7
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Quote:
Originally Posted by ataul View Post
Thanks for rep; Mr Dave, and also thanks for useful links, I will try to measure the woofer but it will be few parameters whatís I can do. Now I give some photograph of woofer
Thanks
Those look vaguely similar to the TangBand W6-1320 6.5" Subwoofers I have 4 of. TangBand makes even smaller "Sub"woofers than that, like 2" square. Crazy I know but they are still "Sub"woofers as per specs and performance.

Without T/S parameters or the brand and model of the drives its impossible to know how they are gonna perform best. What else do you know about them? What did the boxes look like that they came in? Maybe someone will recognize them and have the info.
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Old 6th October 2009, 07:01 PM   #8
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Quote:
Originally Posted by 901Fixer View Post
Those look vaguely similar to the TangBand W6-1320 6.5" Subwoofers I have 4 of
They also resemble the 4"& 5.5" Eastech (sub) woofers i have salvaged out of monsoon multimedia speakers. Not really subwoofers but they do go really low for their size.

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Old 6th October 2009, 07:08 PM   #9
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Any speaker that says "6 ohm 30w" on the magnet is probably not a (good) subwoofer. I'm not saying it's impossible to build a subwoofer out of those drivers but you'd probably be much happier just buying a driver that's designed to do what you're asking it to do.
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Old 11th October 2009, 01:33 AM   #10
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If you can figure out their Thiele Small parameters you could throw them into a front loaded horn and then you would at least get some decent bass. That is if you are up to measuring them.

If you have no software to do the measurement with may I suggest this:

http://www.fesb.hr/~mateljan/arta/

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