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Old 24th October 2010, 05:29 AM   #11
john65b is offline john65b  United States
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OK, looks like I set the LP at 400hz with Butterworth 18db. The upper side was set to 400hz and Butterworth 24db. There isn't a way (that I have been able to make out) how to reduce the Bass LP to 250hz and keep the Mid/HP at 400hz...

So far I alike it a lot. May sell off the external and XO-1 with this setup.

More experimentation tomorrow...
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Old 24th October 2010, 07:06 AM   #12
andyr is offline andyr  Australia
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Quote:
Originally Posted by john65b View Post
OK, looks like I set the LP at 400hz with Butterworth 18db. The upper side was set to 400hz and Butterworth 24db. There isn't a way (that I have been able to make out) how to reduce the Bass LP to 250hz and keep the Mid/HP at 400hz...

More experimentation tomorrow...
Hi John,

If you can't set the Bass LP to 250Hz and the Mid HP to 400Hz then, sorry, it appears the DCX is not as flexible as you thought it was.

In this case, try 24dB LR at anywhere from 250Hz - 350Hz ... however, you need to invert the speaker wire connections on the mid/ribbon back-plate (because with 24dB slopes, the mid must be in the same phase as the bass - whereas with the slopes used in a stock T-IVa (and your 18dB variant), the mid is reversed).

Regards,

Andy

Last edited by andyr; 24th October 2010 at 07:08 AM.
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Old 24th October 2010, 09:36 AM   #13
Davey is offline Davey  United States
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Quote:
Originally Posted by john65b View Post
OK, looks like I set the LP at 400hz with Butterworth 18db. The upper side was set to 400hz and Butterworth 24db. There isn't a way (that I have been able to make out) how to reduce the Bass LP to 250hz and keep the Mid/HP at 400hz...
You can do it. You have to un-check the the little "Link" box on the lower left of the X-Over display screen of the GUI. (If you're not using the GUI program to control the DCX via your computer, do it. It makes things SO much easier.)

You can also do it from the DCX front panel, but it's more difficult.

Cheers,

Dave.
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Old 24th October 2010, 12:12 PM   #14
john65b is offline john65b  United States
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Quote:
In this case, try 24dB LR at anywhere from 250Hz - 350Hz ... however, you need to invert the speaker wire connections on the mid/ribbon back-plate (because with 24dB slopes, the mid must be in the same phase as the bass - whereas with the slopes used in a stock T-IVa (and your 18dB variant), the mid is reversed).
I can invert the mid/high from the DCX.

I will try this and the unlink later today.

I'm getting a little enthusiastic. I have had the DCX for a couple years and never played with it on my magnepan/Aleph/Icepower setup, just on other projects.
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