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Old 09-10-2007, 03:17 PM   #1
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Default Speaker help

I have this speaker that I am not using and my and a friend are trying to make it into a bass speaker. Does anyone know how to do this. I think you cut off a part of the tweeter but im sure, also does anyone know how to fix a blown speaker?
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Old 09-10-2007, 04:04 PM   #2
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Default Re: Speaker help

ummm, you want to make it a bass speaker huh. I wouldn't bother unless you don't mind screwing up the speaker. As for fixing a blown speaker it depends on what part is broken and what type of speaker (many are cheaper to replace than to spend on parts).
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Old 09-10-2007, 04:58 PM   #3
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Default Re: Speaker help

You could get hold of a cross over to filter out anything more than say > 100hz. I assume its quite a powerfull driver?
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Old 09-10-2007, 05:56 PM   #4
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Default Re: Speaker help

Yea it is. We cut the treble tweeter and it sounds a lot better. Anything else I could do to it? The speakers are beyond repair. Melted coil so im gonna get new ones.
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Old 09-11-2007, 01:06 PM   #5
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Default Re: Speaker help

Oh, your talking about a boxed speaker set, I thought you were talking about a coaxial set (tweets on the mid). That would be easy enough to get rid of the tweet. But if the coil is "melted" your prolly better off getting new ones.
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Old 09-11-2007, 05:43 PM   #6
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Default Re: Speaker help

right-o...

firstly, what speaker is blown? the sub or the tweeter?

the best thing you can do to make a sub is to actually take the speaker out of the box it's currently in, and make a new box.

there are several designs that you can use, but the best box for your means is most likely a ported box.


basically it's a box sealed, with the exception of two holes, one hole is filed by the speaker, the other hole has a tube in it, the length and width of that tube dictates what frequency is predominant.

(yes, hard to believe but a simple plastic tube attached to a box can amplify specific frequencies, this means that as the frequency response of the driver rolls off the tube (port) can amplify the bass frequencies, meaning a standard driver that starts to roll off at perhaps 50Hz (not exactly bass), the lower frequiencies can be amplified perhaps down to 10Hz (-extra bassy).

I suggest that you have a look at a program called winISD

(also what speaer do you have -each speaker has theile-small parameters that dictate what it can and can't do it's frequency response etc). you can usually find that information from the googling a bit.

when you say tweeter, is it a dome tweeter? does it come apart (sometimes they are sealed).
if it comes apart it's a piece of cake to replace the voice coil
http://www.theelectronicsshop.co.uk/...ls.htm#MRD-480
there's a place that sells new coils.

if it's the bass woofer part of the speaker that's blown, speakers can e re-conned, but honestly, unless you are talking about rare or vintage speakers, (like I currently have some original vintage g12's -guitarists will know, they are from the 70's) and I've repaired them because I want thm to be as original as possible...

however, if you're talking a fairly cheap speaker to start with, then you're probably better off buying a new driver.
hope that helps, I'm off to bed now, will post more in the morning if you want.

(I have a cottage industry building speakers and amplifiers in myspare time, and am more than glad to share this skill).
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