Speaker Asylum

How about this design?

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This Post Has Been Edited by the Author

In Reply to: RE: LOL! I spent a lot of time working on textbook crossover computations... posted by Presto on March 21, 2012 at 15:19:54

Well, I did a little more research, with the help of some of those guys you mentioned, and decided to go with a different design. Here's what I've come up with.

MCM 8" Carbon Fiber: 2 for each speaker wired in parallel.
Power Capacity: 75W/150W RMS/peak
Sensitivity: 92dB (W/M)
Impedance: 8ohm
Re: 6.0ohm
Le: 1.92mH
Frequency response: 30Hz ~ 8KHz
Fs: 29Hz
Qts: 0.17
Qes: 0.17
Qms: 8.73
Vas: 80.46 (liters)
Xmax: 1.5mm

Vifa XT25BG60-04:

Power handling: 90 watts RMS/140 watts max • VCdia: 1" • Impedance: 4 ohms • Re: 2.9 ohms • Frequency response: 1,500-40,000 Hz • Fs: 630 Hz • SPL: 92.4 dB 2.83V/1m • Dimensions: Overall diameter: 4.125", Cutout diameter: 3.125", Depth: 2.20".

I'm going to use a Linkiwitz-Riley 2nd order 2-way design, crossed over at 3900Hz. Chosen due to manufacturer measurements and suggestions.

I'm having to go all out with this design because it's going to be powered by a 330watt per channel amp (at 4ohm), with a pre-amp without a sub out. Therefore, these speakers must do everything.

Suggestions, while knowing that, at least for this project, I won't be independently measuring the components due to lack of funds/equipment. I designed the box using Bass Box Pro 6, basic crossover design using basic calculators and some info from PCD.
"Buy some horns, you know you wanna"

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