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Old 18th July 2003, 12:25 PM   #1
Howard is offline Howard  United Kingdom
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Default Interesting find

I bought a pair of old (80's) TurboSound LS-1001 midrange PA drivers for 2 at a car boot sale the other week. They are 10".

One of them is damaged, it makes a rattling sound when playing, and scrapes when you move the cone, the other appears to work fine.
I was going to use the working one in a subwoofer until I found out that it's a midrange power driver, for about 250Hz up.

So anyone got any thoughts, ideas what to do with them, etc?

Here's a photo, with a 30CM ruler and my mobile phone for size comparison. Sorry for the photo quality, I've only got a webcam
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File Type: jpg ls1001.jpg (51.7 KB, 903 views)
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Old 19th July 2003, 02:16 PM   #2
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Hi Howard

They look like the Fane version of the 1001s, and they are still in common use, so therefore can be easily reconed, (if you want more details, email me privately and I will give you a contact number).

They are pretty good drivers, usually used in boxes of between 5 to 20 litre with a front horn for dispersion control purposes. Crossovers are usually between 250/300Hz at the bottom and 1.3/1.5KHz at the top.
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Old 20th July 2003, 04:42 PM   #3
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Those are mids drivers from Turbosound TMS-4 and a few other cabinets.
In the TMS-4 they are wired full range from 250Hz up (these are a bi-amped cabinet) and are very efficient - 105 dB/W.
I have TMS-4 crossover schematics if you want them.

Eric.

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Old 23rd July 2003, 08:28 AM   #4
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If you don't want to recone the damaged one you might consider it as a refrigerator magnet.
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Old 23rd July 2003, 08:35 AM   #5
Howard is offline Howard  United Kingdom
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How would I go about removing the magnet and using the cone as some sort of passive radiator?
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Old 23rd July 2003, 09:21 AM   #6
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Mass and compliance of this cone wouldn't be suitable for a passive radiator.

I have used som Fane Studio 10 M drivers (yours are a custom version of this driver !) in the eighties:

Four of them are used in a 4 x 10" bass-box
Two are used in low-mid horns of a four-way active horn system.
Two are used as low-mid in a small direct radiator P.A.


A newer version of this driver is still manufactured by Fane but the type designation is different.

Regards

Charles
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Old 23rd July 2003, 12:27 PM   #7
SY is offline SY  United States
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Normally, the magnet is glued on. If you use some CAREFULLY directed heat and a few lucky whacks with a hammer and chisel at the seam, the magnet will come right off.
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Old 23rd July 2003, 12:47 PM   #8
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Do not destroy these drivers - find a PA company that uses Turbosound cabinets and do them a deal.
You will profit handsomely on your 2 pound purchase.
Magnets on these drivers will not be glued - most likely the magnets are riveted or screwed to the basket.
These are very well regarded and very expensive drivers - recone kits cost 159 pounds according to Turbosound website.
Take a look at the Turbosound site and study the TMS-4 design for high power, high efficiency mids usage.

Eric.
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Old 23rd July 2003, 04:26 PM   #9
Howard is offline Howard  United Kingdom
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Hmmm...Maybe I'll chuck them on eBay and see how much I get.
Any ideas as to a reserve price? I don't really wanna bother posting them and such if only one person bids at like 1. Lol
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Old 23rd July 2003, 05:54 PM   #10
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I may have a buyer for you. Don't get your hopes up on price, as these things go pretty cheap in the S/H pro audio market, ( I can get 1801s for about 50 each), but it will be a significant factor above what you paid for them!

Where abouts in the SE are you?
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