[wushuliu]

What's the sensitivity on these?

[dlparker]

With the current T/S parameters they are optimal in .12 cubic feet ported. Not very big.

None of the PE cabs are close to .12cubic feet. Are there other sources online for prebuilts? I'd want to add a HF driver at some point, too, if that makes a difference..

[Danny Richie]

What's the sensitivity on these?

I measure them at 87db.

[Danny Richie]

None of the PE cabs are close to .12cubic feet. Are there other sources online for prebuilts? I'd want to add a HF driver at some point, too, if that makes a difference..

I will see if I can come up with some cabinet sources. I might even just have some made. Still waiting for answers to some of my questions that I sent to the manufacturer though.

If you guys do add a HF driver then add it to the rear of the speaker.

[dlparker]

I will see if I can come up with some cabinet sources. I might even just have some made. Still waiting for answers to some of my questions that I sent to the manufacturer though.

If you guys do add a HF driver then add it to the rear of the speaker.

And all this would fit in a .12cu' cab? Perfect!

What HF driver would you recommend?

[Peter J]

Danny, would these make a suitable substitute for the no-longer-available TB drivers I used on the project referenced earlier? I'd be willing to make some test boxes if you'd be willing to do your thing as before.

BTW, assuming they can make them what you want, is there any way to project an approximate ETA?

[jcotner]

I will see if I can come up with some cabinet sources. I might even just have some made. Still waiting for answers to some of my questions that I sent to the manufacturer though.

If you guys do add a HF driver then add it to the rear of the speaker.

Danny if you will translate this to a drawing with an HF driver and like dlparker asks a recommended HF driver
I'll probably start building boxes before the drivers are back from Asia.
I like the tall thin cabinets like PeterJ built for his desktop.

[dBe]

I'm there..

D

[skalos]

Danny,

At what frequency would comb - filtering stop if several are used as a line source.  Im thinking about a sound-bar center with a tweeter added.

[Danny Richie]

Danny,

At what frequency would comb - filtering stop if several are used as a line source.  Im thinking about a sound-bar center with a tweeter added.

The lower you go in frequency the more they couple and the higher you go the more cancellation will occur. In general it is never good to run any full range drivers together. And a line source of them turns the response into a mess.

Check this chart for wavelengths: http://www.soundoctor.com/freq.htm

Figure out your acoustic centers, then look on the chart to see what wavelength that distance is. You will get some out of phase cancellation effects down to that frequency.

[lokie]

I'm in. Looking forward to further design details.

Doug

[Danny Richie]

I am waiting to see if they can give me some more X-Max. New samples are being made.

[this_is_vv]

Looking for desktop speaker and thus fits the bill

[ttan98]

Running two of them in parallel causes some major comb filtering that really destroys the response. Using a line of them running full range is even worse. You wind up with no highs.

Trying one in a small open baffle right now. Looks good that way too.

Danny,

Having said that do you think I can design something similar to one of Audience products, Clairaudient 2+2, each speaker uses 4 full range drivers, 2 in front and 2 in the rear, and a passive at the side. Instead of passive I can use your 8" servo woofer one on each size, this combo will sound awesome in a medium size room. Maybe using the 8" servo is an overkill, instead a std. 8" subwoofer would be sufficient.

Will this combo work WELL together?

[Danny Richie]

In order to avoid comb filtering effects the lower woofer would have to be by-passed with a cap. That way only the upper driver plays full range while the lower one covers the lower ranges only. Then it will work great.

[persisting1]

In order to avoid comb filtering effects the lower woofer would have to be by-passed with a cap. That way only the upper driver plays full range while the lower one covers the lower ranges only. Then it will work great.

Would this allow the speaker to play louder?

[Danny Richie]

Would this allow the speaker to play louder?

No louder then one really, but with two sharing the low frequency load they will handle more power before they bottom out. So the mechanical limit is raised.

[persisting1]

No louder then one really, but with two sharing the low frequency load they will handle more power before they bottom out. So the mechanical limit is raised.

This could be beneficial especially for those who watch movies on their computers.

[ttan98]

Danny

You notice that the centre to centre distance between speakers is wide enough to insert another driver in that  space. The designer didn't not, he chose this in order to reduce the major combing effect? If that doesn't work then I can add another tweeter on top like Vaughn with Vaughn speakers like this, see image. I heard the speakers last year without the tweeter, they already sounded quite good.

[Danny Richie]

You notice that the centre to centre distance between speakers is wide enough to insert another driver in that  space. The designer didn't not, he chose this in order to reduce the major combing effect?

No, the increased distance increases the comb filtering effects.

If that doesn't work then I can add another tweeter on top like Vaughn with Vaughn speakers like this, see image.

That doesn't work very well either. It will have a rather rough response. In order to achieve a smooth response with a design like this then one needs to find the acoustic center of the woofers. Just guessing I'd say that from there to the center of the tweeter is 16". A 16" wavelength is about 850Hz. The crossover point would have to be below that point. And that is not really possible with that tweeter.