Good (vintage?) drivers for BiB's? Which should I get? - diyAudio
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Old 23rd October 2006, 12:07 AM   #1
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Default Good (vintage?) drivers for BiB's? Which should I get?

I've seen a ton of drivers on eBay, but I have no idea which ones to use. Can anyone make any reccomendations?
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Old 23rd October 2006, 06:56 AM   #2
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What do you mean by 'vintage drivers'? Without being a little more specific, it's almost impossible to say. Some examples perhaps?

First up, for the love of Heaven, if you buy some, make sure you have their T/S parameters, or can measure them, or they are easily available elsewhere, or we'll just be reduced to a very simple ROT from the 1940s, and a lot of pure guesswork & cut & shut experimentation.

Assuming you do, make sure the Qt is moderate -preferably no more than about 0.45; same goes for Vas -preferably no more than about 45 litres, unless you want, and can live with, absolutely vast (and I don't mean just 'large') cabinets.

The usual checks apply of course -keep a sharp eye on the condition of the cone, the motor, and particularly the surround. Difficult just in a few pictures, but important. Don't go for too large a driver either, again unless you want a monster cabinet. 6 1/2in is the sweet-spot IMO, at least in terms of keeping size down to vaguely sensible levels. Personally I'd love a pair of 30in deep, 90in tall, 18in wide monsters with 12in drive units, but they wouldn't fit through the door for a start, and once in, would look a trifle overpowering, even if I took a sledgehammer to my dividing wall & knocked two rooms into one, making a much larger floorplan.

Personally, I'd look for a second hand pair of top of the range Fostex drivers -the defunct FE168Sigma or FE208Sigma perhaps. Not vintage, but their reputation preceeds them.
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Old 23rd October 2006, 12:02 PM   #3
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On eBay, I've seen tons of fullrange drivers, including miscellaneous Corals, Electro-Voices, RSCs, and more.

I'll take your advcie on size, though - a ten-foot-tall speaker might be a problem.
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Old 23rd October 2006, 04:16 PM   #4
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Coral or Electrovoice would likely be my choice, providing you have or can find, a decent set of T/S parameters.
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Old 24th October 2006, 05:13 PM   #5
el`Ol is offline el`Ol  Germany
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The Stephens Trusonic 80FR has medium Qts and lower Vas than most of today`s 8"ers, should work, at least in an inverted BIB with 1 meter offset.
The problem: I can`t find the site where I have seen the TSPs.
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Old 24th October 2006, 05:25 PM   #6
Svein_B is offline Svein_B  Norway
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The Philps AD 9710/ M - if you happen to find a pair at a reasonable price?

Thousands of these were sold, and often used in Voight pipes a few decades ago. Where are they all stashed away ?

Diameter: 8.5", 20.3 cm
Efficiency: 97 dB SPL @1m, 2.83v, 8R
Re: 5.2R
Z: 7R
Fs: 46 Hz
Qms: 2.28
Qts: .63
Qts: .49
Vas: 3.55 ft^3, 100 l
Pe: 15W
Xmax: +- .7mm

SveinB

Edit: Looking more closely at the T/S, maybe this would be better in OB?
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Old 24th October 2006, 07:25 PM   #7
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Probably. Q is a little high for my taste for boxed speakers except a sealed or aperiodic. Maybe a heavily stuffed TL.
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Old 24th October 2006, 09:03 PM   #8
Dumbass is offline Dumbass  British Antarctic Territory
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There are probably a lot of diamonds in the rough among the "no-name" vintage drivers you see there, but once word gets out on a specific model, prices go high. (Priced Diatones lately?)

I think a lot of them come out of consoles/TVs/juke boxes/etc, so they are basically geared toward "infinite baffle", i.e. high Q.

One potential path is to build a simple open baffle (a la JE Labs) with easily interchangeable drivers, and just try out a bunch.
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Old 24th October 2006, 11:27 PM   #9
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Quote:
Originally posted by Svein_B
The Philps AD 9710/ M - if you happen to find a pair at a reasonable price?

Thousands of these were sold, and often used in Voight pipes a few decades ago. Where are they all stashed away ?

Diameter: 8.5", 20.3 cm
Efficiency: 97 dB SPL @1m, 2.83v, 8R
Re: 5.2R
Z: 7R
Fs: 46 Hz
Qms: 2.28
Qts: .63
Qts: .49
Vas: 3.55 ft^3, 100 l
Pe: 15W
Xmax: +- .7mm

SveinB

Edit: Looking more closely at the T/S, maybe this would be better in OB?

Anyone know anything about the Phillips 1065's?
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Old 4th November 2006, 05:52 AM   #10
cotdt is offline cotdt  United States
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are the altec 755's any good? what about the vintage pioneers, and philips drivers? i had a vintage sony driver that i really liked but i gave it too much power and the poor paper cone ripped apart.
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