My 2 way design... need xover help

[AudioGeek]

My design is:

D26NC-55-06 tweeter

Seas CA12RCY woofer... 2 of them bipole config. run full range.

1st order on tweeter.

trying to figure out best x-over point of tweeter and if either tweeter or woofer need any compensation circuits.

so what x-over point shall i use and what value of capacitor??


finally, can i push these woofers to achieve a -3db of 58hz in a 0.32 cuft (for 2 woofers) tuned to 53hz?

or a flatter tuning of -3db of 73hz in a 0.2 cuft tuned to 75hz?

i can put both a port and a woofer on front and back. tweeter just on front.

I could even make the tweeter an external tweeter in a small enclosure so that it can be pointed the correct direction and also to time align the system.

Thanks!!!

[Rounder]

Hey,

based on graphs at zaphaudio.com i would say a crossover point between 2.3 and 2.5khz is reasonable for the tweeter and woofer. Most others will probably say that first order isnt steep enough, i personally have tried and compared and think that first order in enough to be safe and sound good, not to mention the simplicity. As for the two woofers, i think u would be ok to push for 58hz as long as u dont feel like giving ur speakers 200 watts or DJ duties. A zobel for the woofers would probably be a good bet to flatten the rising impedance. The driver configuration is up to u, i would keep it simple, mtm on the front and port on the back but it depends on ur needs. I havent seen accurate FR graphs for the woofer so i cant advise on notch filters. You should be able to figure out cpacitor values online with the frequency and impedance...

Good Luck

[AudioGeek]

i was actually thinking of running the woofer fullrange and just filter the tweeter with a cap.

woofer on back so that i do not need a BSC circuit.

the woofers are pretty flat to 10khz.

[Bose(o)]

Personally, I think you should look into getting that first order cross over. I find that speakers using some type of filter or control on a driver imparts a cleaner sound-one without the breakup modes of the loudspeaker.

You can always use a bypass cap as well, these seems to increase the minimalism of the circuit.

[AudioGeek]

i was thinking of running the woofer full-range... so, need to figure out a x-over point to account for this.

its -3db down at 10Khz or there abouts.

worried about off axis suckouts though as the 30 and 60 degree drops of before 10Khz.

and i like the bipole configuration to get rid of the BSC circuit and its reduction in efficiency.

plus that woofer has a good xmax for its size and a low fs.

Thanks!