Onken response (BD-Design)

by GC, Tuesday, March 08, 2005, 11:49 (4699 days ago)

Bert,

A long time ago somebody posted a picture of some measurements they had made of your Onken woofers. Do you still have that set of measurements?

I'm interested because I'm trying to work out what to do with my woofers once I upgrade to the Ultra. I don't think anybody outside of New Zealand will want to buy them because of the shipping cost, and am not sure I could find a buyer in NZ.

Thanks,

Russell

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Onken response

by GC, Tuesday, March 08, 2005, 15:14 (4699 days ago) @ GC

Hi Russell,

A long time ago somebody posted a picture of some measurements they had
made of your Onken woofers. Do you still have that set of measurements?

I remember somebody did published some measurements but I can't remember where that was.

You could use them combined in one enclosure and use them as subwoofer (HT)....

Ciao,

Bert

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Onken response

by GC, Wednesday, March 09, 2005, 22:21 (4697 days ago) @ GC

Bert,

If you do come acros that picture it would be helpful. I'm interetsed in their behaviour abouve 180hz.

I thought about your idea of using the Onken's for HT subwoofers, but I actually think they are too good for that. They could form the basis of a really good pair of speakers (they do with the Oris!).

I have been wondering about pairing them with a Fostex driver, either in some kind of box, or on an open baffle. I also had a crazy idea about using some Mangers, but thay are way too expensive - if I could spend that kind of money I'd be buying BD3s ;)

The main thing for me would be to achieve a well balanced sound using a passive crossover, and something that was well integrated visually.

Do you have any ideas? Finding a good cheap solution to this could be helpful to other current and prospective Oris owners, as it could put a further step in the upgrade path from Oris 150 or 200 through to the Ultra.

Cheers,

Russell

Hi Russell,

A long time ago somebody posted a picture of some measurements they had
made of your Onken woofers. Do you still have that set of measurements?

I remember somebody did published some measurements but I can't remember
where that was.

You could use them combined in one enclosure and use them as subwoofer
(HT)....

Ciao,

Bert

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0

Onken response

by GC, Wednesday, March 09, 2005, 23:03 (4697 days ago) @ GC

Hi Russell,

I have been wondering about pairing them with a Fostex driver, either in
some kind of box, or on an open baffle. I also had a crazy idea about
using some Mangers, but thay are way too expensive - if I could spend that
kind of money I'd be buying BD3s ;)

They perform well up to at least 500Hz so a Fostex would be a good idea. You could use the FE103E in an open baffle on top of the Onken, the sensitivity is close and a simple filter set to 350Hz should work out okay.

Mating them with a Fostex FE207E (or even an FE206E) will work well while reducing the sensitivity of both with an L-Pad).

Ciao,

Bert

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Onken response

by GC, Thursday, March 10, 2005, 13:21 (4697 days ago) @ GC

Hi again Bert,

This is sounding promising.

They perform well up to at least 500Hz so a Fostex would be a good idea.
You could use the FE103E in an open baffle on top of the Onken, the
sensitivity is close and a simple filter set to 350Hz should work out
okay.

What baffle dimensions would you propose. What type of filter - symetrical second order?

Mating them with a Fostex FE207E (or even an FE206E) will work well while
reducing the sensitivity of both with an L-Pad).

What type of enclosure? IB or BR? Would one of the Fostex L-Pads be suitable?

Which would be your pick for the better solution - the 103 or the 207?

Cheers,

Russell

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Onken response

by GC, Friday, March 11, 2005, 10:44 (4696 days ago) @ GC

Hi Russell,

What baffle dimensions would you propose. What type of filter -
symetrical second order?

The width of the Onken and the height as you please. The driver should be at earlevel. You could make angled wings to the sides to spread the cancelling between the front and back of the driver. Just make it visual nice and tune the filter to that what you've build.

What type of enclosure? IB or BR? Would one of the Fostex L-Pads be
suitable?

Open baffle or a short TL (also open at the back but then filled with damping material). Any L-Pads are usable, their principle is the same. Better would be with fixed resistors though...

Which would be your pick for the better solution - the 103 or the
207?[/i]

The 207 could be crossed lower and has more "reserve", the 103 will sound more open and free.

Ciao,

Bert

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Onken response

by GC, Saturday, March 12, 2005, 11:29 (4695 days ago) @ GC

Hi Bert,

The 207 could be crossed lower and has more "reserve", the 103 will sound
more open and free.

Would the limited power handling of the 103 be a problem? What sort of amplification would you suggest?

Cheers,
Russell

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Onken response

by GC, Sunday, March 13, 2005, 10:52 (4694 days ago) @ GC

Hi Russell,

Would the limited power handling of the 103 be a problem? What sort of
amplification would you suggest?

Normal listening levels and proper protection (filtering the lower frequencies) won't show any power handling problems. As single amplified system you can use an amplifier like the BD30 very well which is very capable to drive the Vifa, the FE103E's can be driven by anything.

Ciao,

Bert

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Thanks very much (nt)

by GC, Wednesday, March 16, 2005, 13:09 (4691 days ago) @ GC

nt

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