Ideal Cross over slope (Off Topic)

by Henry Venema @, Monday, August 07, 2006, 17:59 (4181 days ago)

Hi Bert,
I’m curious about the ideal crossover slope for the AER MD3. With the 200 hz and 250 hz horns what is the actual crossover slope used, and if you could change it to an "ideal" slope, would you change it or keep it the same. The reason I'm asking is that I have a DEQX digital processor that lets me chose what ever slope I want; however, rather than spending endless hours trying dozens of different crossover slopes, which I will probably do anyway (I think Freud would call that anal retentive), why do double work when I can learn from your many years of expertise.
Henry

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Ideal Cross over slope

by Bert @, Tuesday, August 08, 2006, 17:21 (4180 days ago) @ Henry Venema

Hi Henry,

I’m curious about the ideal crossover slope for the AER MD3. With the 200
hz and 250 hz horns what is the actual crossover slope used, and if you
could change it to an "ideal" slope, would you change it or keep it the
same. The reason I'm asking is that I have a DEQX digital processor that
lets me chose what ever slope I want; however, rather than spending
endless hours trying dozens of different crossover slopes, which I will
probably do anyway (I think Freud would call that anal retentive), why do
double work when I can learn from your many years of expertise.

The Oris horns have averaged a 18dB slope (depending on the driver used and back chamber configuration). Both the Oris 200 and 250's have their crossover point at 220Hz. Optimal you could filter these with 12dB and the bass with 24dB to have the crossover range mirrored (drivers should then all be connected in the same phase!).

I am not sure if the DEQX will be an improvement if used to filter the Oris horns but you can always give it a try.

Ciao,

Bert

--
BD-Design - Only the Best!

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Ideal Cross over slope

by Henry Venema @, Thursday, August 10, 2006, 04:33 (4178 days ago) @ Bert

Bert,
Thanks for the info. I'm not sure if the DEQX is a blessing or a curse: too many options, but once dialed in, my crappy fostex horns entered a whole new level of performance. Now for my new pair of speakers.....
Henry

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Ideal Cross over slope

by Don Reid, Rural Northwest Georgia, USA, Saturday, August 12, 2006, 02:46 (4176 days ago) @ Henry Venema

Hey Y'all,

I use the DEQX to crossover Oris 150s with AERMD3s to the bass bins of Klipschorns. The slopes are 96dB/octave for the low pass and 78 dB/octave for the high pass. The sound is gloriously wonderful. I say this despite having had to to send my DEQX back for repairs three times. The DEQX is a splendid device for DIY speaker builders.

Bye,
Don Reid

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