Final decision help

[dtkeith]

Hello all, i''ve been working on a new speaker design and i've been asking for alot of help... Thanks to all who have helped with that process.

Now i believe i have a good idea of what i'm going to do, but i need some final design help.

The speaker on the left in the pic, WWMTM has 2x 299-057, W, 2x 299-065M and 1x 264-1026

The speaker on the right WWMT has 3x 299-057, 1 as mid and the 264-1026

I've been told that both are better then the other by people on here, so i'd really like some final advice, I also need some help with my crossover points and such as that. and finally, the boxes are not final in the pic, i just threw that together so you could see what i'm thinking

Thanks for the help

[billfitzmaurice]

Without even looking at the driver specs I'd do the MTM version, which should have better midrange response and dispersion than the one using the same drivers as woofer and midbass.

[dtkeith]

What would some guess xover points be for an WWMTM>

[dtkeith]

What would some guess xover points be for an WWMTM>

This is all i have left to do, so some help would be appreciated

[Brewski]

One thing to point out about the woofers... Even though they are rated at 12ohms to get them to where I'd wanted to cross them in a w/tm/w center speaker model the impedance drops to around 4 ohms. Because of that my recomendation would be to consider going with one of the mid drivers or two 8 ohm drivers in parrallel in the mids.

I'd have to model them but roughly I'd think 400 to 500 for woofer/mid, and 2200 to 2500 for the tweeter mid.

Take it easy
Jay

[greywarden]

If you have the dimensions decided, you can plug them into Boxycad and it'll tell you what the minimum x-over points are. You'll have to do like the top woofer, the bottom mid and the tweeter... b/c you can only use 3 drivers and a side woofer in Boxycad. it'll also calculate the bracing and volume and cuts for you, too.

[dtkeith]

Are there any places to learn more about xover design, as far as why certain frequencys are better then others?

[MGrant1957]

Cross-overs are designed individually for each combination of drivers/enclosure.

The crossover freq. is determined by the electro/mechanical properties of the drivers, the frequency response of the woofers/tweeters, the acoustic properties of the enclosure/encosure size/port diameter/length, as well as the amount/properties of any sound absorbing/damping material used in the enclosure.

As you can see, there are a very large number of variables involved, as well as a number of compromises to be made during construction process.