| Combo B&C DE250 with Altec 811 [message #95094] |
Thu, 20 January 2022 13:29  |
Arthur C
Messages: 13
Registered: November 2011
Location: Paris, FRANCE
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Chancellor |
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Hi,
May I kindly request some help or fed back concerning a crossover design.
Does a member has already tried the combo B&C DE250 With Altec 811B
I am planning to build a new 2 way configuration a speaker between Klipsh Cornwall and 4 Pi speaker.
The idea is to us a 96 dB 15' carbon fiber woofer (Davis acoustic speaker 40 RCA15 DF) with Altec 811 B horn ad B&C DE250 compression driver.
A 1k6 cutoff frequency seams not appropriate for my woofer, a 800 HZ cut off should be great in a 12db/18db configuration.
According to Wayne's documentation the crossover should be as follows:
- Concerning the woofer : Zobel : 8 ohms + 22 UF capacitor
L2 : 2.00 MH
C4 : 20 UF
- Compression driver and horn :
C2 : 16 UF
L1 : 1.2 mH
C3 : 47 UF
R1 = 20 ohms
R2 = 14 ohms
C1 = 1.6 uF.
Concerning C1 : a reduce capacitor should flatten the frequency response ?
Should high frequencies have to be boost I could add a super-tweeter
May I kindly ask you if this configuration could be accurate ?
Any proposal will be welcomed.
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