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Old 14th March 2003, 03:47 AM   #1
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Default Finding the perfect open baffle woofer?

I think I have come close to the perfect open baffle woofer and would love to find two more. I know now what to look for with the TSP's but the old drivers don't have any specs and the ones that I have now were found by accident. Is there something in particular to look for when I'm out yard sale-ing?

I thought I had a formula of a light finger thump on the cone and listen for the "signature" but even that is no guaranty as I recently found out. I guess short of me finding the exact drivers I have now it's just buy em cheap and take a chance eh?

If these drivers weren't so amazing I wouldn't even have started down this open baffle road but now I'm hooked and finding out that good OB drivers are very rare.

Thanks,

Albert
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Old 14th March 2003, 08:39 AM   #2
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Well, don't keep us in suspense about the woofer's name...




However, I suspect the ultimate open baffle bass driver currently would be the Adire Tumult. Open basket, 34mm xmax, fancy motor.

I have Adire DPL12s which are very nice also, and the Stryke AV12 or AV15 would seem to be good.

And there are the big Aurasounds, although at $700 a pop they would stretch the budget.


Cheers

Steve
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Old 14th March 2003, 11:57 AM   #3
ICARE is offline ICARE  France
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HI,

Im as well starting a project of oppen baffle. For now I followed advices of Steve, beacause he has experience and this baffle looks really nice.

So Im really interested on this drivers you found. Can you tell more....

See You

a+
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Old 14th March 2003, 03:00 PM   #4
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I am posting at work (on my break ) so I don't have the part no's, but they are a pair of Magnavox 15's out of a console and they were free to boot!

I have many old AlniCo drivers and none even come close to the deep bass these do. I even have another Magnavox 15 with the identical cone and basket that sounds completely different than these do.

I am currently just experimenting with one baffle which is 3 ft wide and 7 ft tall. I started out with it 4 x 8 and cut it down to see what kind of bass loss I would have.

My question would be: if I could get the TSP's on these and could find another modern driver with the same parameters, would they sound the same? Hmmmm

Albert
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Old 23rd March 2003, 11:54 AM   #5
Nuuk is offline Nuuk  United Kingdom
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Albert, if you haven't already seen it, THIS may be of interest as regards baffles.

I'm going to try this out with my two Goodmans 201's.
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Old 23rd March 2003, 01:36 PM   #6
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Thanks Nuuk, looks cool!
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Old 23rd March 2003, 03:35 PM   #7
Nuuk is offline Nuuk  United Kingdom
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I've done a fair bit of research on open baffles and really it comes down to two options:

1 One large 'full-range' unit in a very large baffle with no EQ etc. Advantages, cheaper option, very little in the signal path to 'spoil' things.

Disadvantages, limited bass response, possiblr uneven response, size of baffle.

2 Multiple drive units in small baffle with subwoofer(s) using crossovers and/or EQ.

Advantages, even frequency response across a wide range, smaller space required.

Disadvantages, cost and more interference with original signal.

As I already have a pair of Goodmans 201's, (and very little money), I'm going to try the large baffle and see if I like it. If I do but want a smaller solution, I'll have to save up for something along the lines of the Phoenix.

And if I don't, I still have the 110 litre ported cabinets to return the 201's to.
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Old 23rd March 2003, 03:39 PM   #8
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Hey Nuuk, do you have the TSP's for your Goodman's?
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Old 23rd March 2003, 03:48 PM   #9
Nuuk is offline Nuuk  United Kingdom
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Quote:
Hey Nuuk, do you have the TSP's for your Goodman's?
Unfortunately, nothing more than can be found HERE.

I just took a guess when making my cabinets and they do seem to work very well. I did consider making some 200 litre cabinets which is the size suggested for the 201's but I fancy an open baffle as a 'better' use of my time and money.
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