What loudspeakers to build next year?

[rvrazvan]

I got:
2x monacor dt 300+wave guide
2x Selenium d305 midrange CD
2x eminence apt50 CD
2x eminence gamma 15a2
2x jamo midranges( good quality)

What would you build with these?
Can't decide on my own .

thanks!

[Pano]

First decide what type of box you want for the 15s. Closed, bass reflex, aperiodic, open baffle? And how big.

Then use the Jamo midranges and add your tweeter. You're good to go. Mostly it depends on what you want to do with the Gamma 15A2. It's supposed to work well in a ported 5 cubic foot box, but there are other things you can do with it.

[rvrazvan]

The bass is the hard part, and i found only a few designs with this loudspeaker...

I bought it for La Scala cabinet at first. But i want more bottom end...

[Pano]

Well it's a low Q pro woofer, thus not made for super low bass. It's not a subwoofer. It will, however, give you plenty of midbass in a ported cabinet - and that could sound great. If you have a digital crossover, you could even put in an H-frame and force some bass out of it. It's efficient and tough enough that you won't hurt it in domestic use. There might be some bass scoop designs for it.

[rvrazvan]

The woofer has a 32hz resonance. Can i make use of that with an large ported box, tuned very low? Only 3mm of excursion!

[mattlong8]

Pano,
I may be wrong but I think the Qtc doesn't really determine how low a driver can go. A better indicator is if a woofer exceeds xmax in a chosen alignment. Qtc=.3 is pretty close to ideal for a vented cab but I can't see it putting out 33hz at rated power and staying under xmax.

-Matt

[mattlong8]

Originally Posted by rvrazvan

The woofer has a 32hz resonance. Can i make use of that with an large ported box, tuned very low? Only 3mm of excursion!

I think a smaller ported box tuned to 40hz+35hz but24 HPF might break less drivers. But I tend to push my subs as hard as they will tolerate.

-Matt

[Pano]

Originally Posted by mattlong8

I may be wrong but I think the Qtc doesn't really determine how low a driver can go.

It's an indicator (along with Vas) of how big a box you'll need to go low. There are ways to cheat it a bit.

[POOH]

The Gamma 15 will work in a front horn. Triamp the mains with the proper contour on the compression drivers and just add some subs and you're done.

[rvrazvan]

Originally Posted by POOH

The Gamma 15 will work in a front horn. Triamp the mains with the proper contour on the compression drivers and just add some subs and you're done.

Can't decide in what horn to put it....

Bdw...i can deal with 200L BR.....