Oris 200/Compact Bass Questions (BD-Design)

by xcortes @, Monday, June 30, 2008, 16:47 (5778 days ago)

I finally purchased a pair of Oris 200 horns. I will use them with Fostex Fe206es-r drivers. My idea is to build the compact bass system. In the past the plans were on the site but I haven't found them. Where can I get them?

Also what would be the recommended crossover setup to start experimenting with this configuration of horns and bass system?

Thanks a lot,

xavier

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Oris 200/Compact Bass Questions

by Gasper, Tuesday, July 01, 2008, 14:17 (5777 days ago) @ xcortes

Dear Xavier!

I think you should "ask" Bert via e-mail for plans and picture of filter.:yes:

From my experiances, it was never a problem.:satisfied:

Regards,

Gasper.

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Oris 200/Compact Bass Questions

by xcortes @, Thursday, July 03, 2008, 18:50 (5775 days ago) @ Gasper

I think you should "ask" Bert via e-mail for plans and picture of filter

I will. Thanks.

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Found the crossover: more questions

by xcortes @, Thursday, July 03, 2008, 18:54 (5775 days ago) @ xcortes

I found the crossover:

[image]

What strikes me is that the recommended crossover has a 100K pot. I’m intending to use gainclone amps for the bass and they have 20K input impedance. I don’t know how 100k would work here. Am I'm missing something?

thanks

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Found the crossover: more questions

by Bert @, Thursday, July 03, 2008, 21:18 (5774 days ago) @ xcortes

Hello Xavier,

Found your email...will answer as soon as possible.

What strikes me is that the recommended crossover has a 100K pot. I’m intending to use gainclone amps for the bass and they have 20K input impedance. I don’t know how 100k would work here. Am I'm missing something?

As for this question, the 100k is that high so that the total impedance by the filter does not become too low (100k and 20k in parallel is already 16,5k in total as seen by the filter). If there would be a 20k potentiometer then the impedance would be 10k and knowing that 16.5k is already influencing the filter behaviour negatively....

This is the reason why people have to tune their filter as I can't predict what they will connect after the filter...

Bert

--
BD-Design - Only the Best!

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Found the crossover: more questions

by xcortes @, Thursday, July 03, 2008, 23:24 (5774 days ago) @ Bert

100k and 20k in parallel is already 16,5k

I get it now! I was deeing it as 100K trying to drive 20k.

Thanks!

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Found the crossover: more questions

by GC, Sunday, July 06, 2008, 17:18 (5772 days ago) @ xcortes

As a thump rule, look for amplifiers with *normal* 47K inputs. Then you don't have to fiddle too much with the filter.

:wink:

GC

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