Is there interest in a large three way "monkey coffin" collaboration?

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

True on all counts. But it costs over twice as much. Don't get me wrong, I don't think the Faital mid is going to significantly limit the design. It seems like a very solid driver that will do well here.

The Dayton PM180 would be more sensitive ,easier to mount , NOT ugly , would not a be a weak link .
,donc

[isaeagle4031]

Re: Is there interest in a large three way "monkey coffin" collaboration?

Agreed! Stellar and clean!

[donc]

Re: Is there interest in a large three way "monkey coffin" collaboration?

The Dayton PM180 would be more sensitive ,easier to mount , NOT ugly , would not a be a weak link .
,donc

[JasonP]

Re: Is there interest in a large three way "monkey coffin" collaboration?

Don't rear mount it. If you do, the alignment with the tweeter will be way off.

Still addressable in the crossover no? I mean otherwise how would we get those horn tweeter/12" two way speakers working...

[Mark65]

Re: Is there interest in a large three way "monkey coffin" collaboration?

It is dlr. You remembered correctly.

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

Not a bad idea. I'm trying to remember which member here has done a lot of experimentation with felt and other surface treatments for diffraction. It might be DLR.

I have been staying out of the discussion (as I am unlikely to build a monkey coffin at present), but I am going to second the surface mounting of the mid. I think traditionally the driver arrangements on monkey coffins are usually a little ugly, why break from tradition?

As for the diffraction effects, the tweeter doesn't have much of a recessed waveguide so this could actually be a problem. My solution, acoustic felt! Build the box with proud sides, experiment with felt, and create a cool full or partial bodied grill cover with some sort of tweed...now we are talking!

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

This should fill the bill just fine. On an output capability perspective the mid is probably the weak link here. Certainly not the tweeter...

I will definitely build this. My current garage speakers are the cult favorite DCM KX12 series 1. My favorite all around speakers ever. The tweeter has always been the weak link with the kx's. The kx's are also ported 12" 6" mid and tweet. This collaboration should be a great way to retire the DCM's.

[NickJ]

Re: Is there interest in a large three way "monkey coffin" collaboration?

I have been staying out of the discussion (as I am unlikely to build a monkey coffin at present), but I am going to second the surface mounting of the mid. I think traditionally the driver arrangements on monkey coffins are usually a little ugly, why break from tradition?

As for the diffraction effects, the tweeter doesn't have much of a recessed waveguide so this could actually be a problem. My solution, acoustic felt! Build the box with proud sides, experiment with felt, and create a cool full or partial bodied grill cover with some sort of tweed...now we are talking!

[ROTECH]

Re: Is there interest in a large three way "monkey coffin" collaboration?

I will definitely build this. My current garage speakers are the cult favorite DCM KX12 series 1. My favorite all around speakers ever. The tweeter has always been the weak link with the kx's. The kx's are also ported 12" 6" mid and tweet. This collaboration should be a great way to retire the DCM's.

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

I will prob start with surface mount. A grill is a good idea. And a grill frame would likely be more of a diffraction issue than the frame of the mid.

It would truthfully require a test with two baffles, one flush and one surface mounted. My guess is the negative effects of surface mounting the mid would be negligible in the grand scheme of things. You would also be able to achieve a 20mm closer CTC. Whichever is chosen the design should be final. Moving driver positions post x-over design is a no no.

[djg]

Re: Is there interest in a large three way "monkey coffin" collaboration?

A bit OT but certainly in the spirit of things.

http://www.youtube.com/watch?v=aaEiXAyfCv4

[Jay1]

Re: Is there interest in a large three way "monkey coffin" collaboration?

I think you are definitely right on that any added difficulty of the build would scare some folks off. Do you think an 8mm thick driver frame will have too many diffraction effects?

I mean if surface mounting would not cause strong enough diffraction problems to require treatment in the crossover then the builder could build it either flush mounted or surface mounted. Changing the z offset 8mm can't be that huge of an issue I wouldn't think. But what do I know.

It would truthfully require a test with two baffles, one flush and one surface mounted. My guess is the negative effects of surface mounting the mid would be negligible in the grand scheme of things. You would also be able to achieve a 20mm closer CTC. Whichever is chosen the design should be final. Moving driver positions post x-over design is a no no.

[djg]

Re: Is there interest in a large three way "monkey coffin" collaboration?

Both the mid and woofer here have the unsightly black cardboard gasket showing on the front surround. Even flush mounted, their look is unfinished. Maybe a grill detailed in the design would help. My lost JBL L100T with grill looks nice to me.

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

I think you are definitely right on that any added difficulty of the build would scare some folks off. Do you think an 8mm thick driver frame will have too many diffraction effects?

I mean if surface mounting would not cause strong enough diffraction problems to require treatment in the crossover then the builder could build it either flush mounted or surface mounted. Changing the z offset 8mm can't be that huge of an issue I wouldn't think. But what do I know.

I would just surface mount the mid with an overlap on top of the tweeter faceplate.

Edit: The mid is a good choice based on the design and budget. If you keep the build difficulty low more people may build it. Having to flush mount this driver will instantly scare off noobs, even though it's as simple as routing a 5.75" hole with 7.15" recess and filling the hexagon areas with bondo.

[lorenmjones]

Re: Is there interest in a large three way "monkey coffin" collaboration?

That could be pretty slick.

My idea would be very simple to execute. Cut a circle the correct size with a jasper jig and cut correct sized sections off the perimeter, 20 minutes tops. As far as rear mount, someone that knows about speaker design should answer that. I am a builder, not a designer.