Looking for some help and advice please. Sadly the slippery slope that is DIY has bitten me and my front stage can no longer keep up with my DIY subs.
Never built a speaker as passive crossovers always seemed like a dark art that I should be wary of.
I want to do my center first and then front L+R later.
All my speakers are KEF as I like to coaxial they use… that said I am looking to get more performance in the 60-2Khz range.
I currently run my AVR crossover at 80hz but would like to take it to 60hz if the center could handle it.
Leaving it at 80hz is also fine as I imagine I will generate far more SPL with lower distortion with this setup vs my current KEF center.
The goal is to run the two TD8X-8 drivers in parallel and present a 4ohm to the AMP.
I would like some guidance and advice regarding the possibility of using a simple passive crossover for the coaxial driver+tweeter.
This would save me an additional channel of amplification. I will probably use a inuke 3k DSP for the center channel especially if going with passive.
If the consensus is fully active then was thinking about using a minidsp 4×10. That would give a 3x 3way for the front stage.
Here are the models I did in Winisd
Filter and Cone Excursion
This is what I have come up with so far. The crossover points most probably need to be moved around but I want to limit the movement of the coax in order not to interfere with the tweeter.
The net volume required by the coax needs to be confirmed. Once I finalize the AE portion I will open and measure my Q900.
I will be using the KEF Q900 Coax – here are some measurements http://www.stereophile.com/content/kef-q900-loudspeaker-measurements
1 – What is the general consensus regarding the design
2 – How complex would a 2way passive x-over be to build for the coax with the inclusion of a Notch/LCR filter around 4-5kHz
3 – Comments/Suggestions on x-over frequencies and roll off to be used
4 – Worthwhile looking at dropping AVR xover to 40hz? Winisd shows 100db at 40hz…
Would really appreciate any help or guidance from those with experience.