Big Radius 2-way

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Re: Big Radius 2-way

Thaks Tom. The Black and Orange are both Duratex. Miki mixed it for me on request. I just used blue masking tape. Up close, you can tell.
Below on axis, the top end drops like a rock, but above, is really good. I'll get some measurements one of these days.

[tomzarbo]

Re: Big Radius 2-way

The subs came out really nice too. So the color difference is just done with paint? I'm surprised that the paint line is so nice and crisp given that you used textured paint underneath. Those look awesome. I know you say the cabinet arrangement places the tweeter lower than we normally do, but is there any negative effect on the sound?

I ask because I've often listened to my unfinished version of Chris Roemer's Neo Nano's on the ground, just slightly tilted upwards, and found them to sound pretty much fine down there. They really look cool.

TomZ

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Re: Big Radius 2-way

Thanks. I got to listen for about a hour when I got home. A little Strauss, some Steely Dan and some Michael McDonald. I really like what I'm hearing.

[greywarden]

Re: Big Radius 2-way

Those turned out really awesome! If they sound half as good as the big orange towers, they'll be amazing

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Re: Big Radius 2-way

What amps are you using that're causing issues with the sub integration?

I started out designing a two-way that would go as low as possible. I incorporated a full 6db of baffle step.
One I fix that, and maybe take up a bit of space, they should intergrate mucho better.

[dynamo]

Re: Big Radius 2-way

Very nice Arlis!

[rhodesj]

Re: Big Radius 2-way

I wonder, if you painted the curved panel orange, visually it would make that area distinctly the "top", and thus the black baffle not as tall, so it wouldn't seem like the drivers were so low on the baffle.

What amps are you using that're causing issues with the sub integration?

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Re: Big Radius 2-way

Thanks Hong. As this graph suggests, there is some/to much overlap on the woofer and sub. I don't want to low pass it so I might just put a bag of foam or something in there to take up some space. Perhaps it will roll off a bit earlier.
Thoughts?

[hongrn]

Re: Big Radius 2-way

You're one heck of a creative guy. Very nice set up. Good measurements too.

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Re: Big Radius 2-way

Finally have these playing. Have been working on something else for a bit.
Built tow um10 kits. Got the boxes in a deal a while back and won one um10 at DokotaDIY. Had one plate amp so had to buy one and one. The flat pack boxes were made for some other driver so were 1/4 inch to small. I had to buy a huge rabbit bit to remove 1/8 all around. Fits perfect now. Was disappointed to learn when using the speaker level inputs and outputs that fixed at 125hz high pass. Not the 180 crossover like with the LME inputs. They still blend rather well with the PS180
Same paint scheme. The tweeters are just 29 inches off the floor but as you could imagine, do really well above on axis.


Really have to keep reminding myself that this is and exercise in diffraction control, because I think the drivers being so low looks ugly.
I have a preamp coming this week so will be able to listen to a Cd player instead of a soundcard in a laptop.

This is one side of whole system at about two feet. Still voicing at this point, but they are close.

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Re: Big Radius 2-way

Just a note from the inside track regarding the PS180/PM180 drivers:

Because of their low Qts, if you want to get bass from them, you will need a large vented enclosure. I have a pair of PS180 drivers in the 300-7066 knock-down tower cabinets configured as ML-TLs, and they have always impressed myself and other listeners with excellent bass performance, but they need a big box to do it.

In a smaller cabinet like Lowell's current build, a woofer/subwoofer is definitely a necessity, as is a high-ish sensitivity tweeter.

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Re: Big Radius 2-way

Thanks mark.
The whole thing is in prep for a similar build except a wmtmw tower for my son-n-law. Never used the 3" Quarter round before. Hence the huge space above the tweeter.

[Psycoacoustics]

Re: Big Radius 2-way

Then I masked off from the radus front to back and started the Orange Duratex. This must be 12 coats.


Next weekend I'll do some light sanding and maybe apply a clear coat.
BTW, th orange is Behr Dragon fire S_G_240 that Miki at Duratex mixed up for me.

Just to let you know,,,, this shot was inspiring. Thanks, Mark

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Re: Big Radius 2-way

Got them set up and some measuring with omnimic.
Pretty clean Impulse.

0 to 60 degrees.

Which gets me this.

And not least, Distortion from about a foot.

Probably wont go with this exact crossover, its just what I could do in a short time today.

[kenny_k]

Re: Big Radius 2-way

Impressive, you do wonderful work. Can't wait for the finale.