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6 Pi Crossover Questions [message #70762]

Tue, 03 January 2012 10:13

rkeman
Messages: 78
Registered: March 2010
Location: Florida

Viscount

The 6 Pi crossover specifies L2 with the Eminence Delta 10A and states in a footnote that the tweeter polarity should then be reversed. Is it correct that the B&C DE250 would then be wired in normal polarity (positive to red and negative to black)? Also, is there a way to calculate an additional 2 or 3 db of attenuation to the midrange and tweeter circuits? Because the crossover will be mounted in a separate enclosure it would be easy to add DPDT switches for flat and attenuated tweeter and midrange networks. Thanks for any assistance that you may be able to provide.

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Re: 6 Pi Crossover Questions [message #70765 is a reply to message #70762]

Tue, 03 January 2012 11:04

Wayne Parham
Messages: 18783
Registered: January 2001

Illuminati (33rd Degree)

Reversing tweeter polarity will "double swap" if using a DE250, so yes, red to positive in that case.

You can increase the midhorn attenuation by ~2.5dB by changing the values of R4 and R5 to 5Ω each. The specified values of R4/R5 (4/8) are set to attenuate 6dB. By shifting values to (5/5), you'll increase attenuation to 8.5dB.

For tweeter values, see the following chart:

Tweeter compensation component R1/R2 values

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