Full-Range bipolar centre channel

[planet10]

First pics of the prototype RS 40-1197 bipolar centre channel. These are an ML-TL. Since it is doing CC duty we needed to mount the drivers magnet-to-magnet (which works well -- i can get the speakers a couple inches closer to the TV than in the bottom frame without any rainbows on the TV monitor). Chris did such a good job that i could only get a piece of paper between the magnets, to ensure tight mechanical coupling. The drivers were mounted from behind the baffle to maximize the depth of the cabinet (length & cross-section are fixed by the ML-TL parameters). These are destined to accompany a set of 4 RS40-1197 BD-Pipes in a friends HT system (the Red ones at the bottom of the page are the fronts). They are also accompanied by a Red push-push sub using 1 pr of Foster extended range 12". In the next iterations we will squeeze the FR closer to the edge of the pipe so as to be able to add the super-tweeter vertically (it comes in at 10k).

dave

[planet10]

We subbed in a single port, and the drawing doesn't show the tweeter.

dave

[JOE DIRT®]

Nice work!!!...I`m in the middle designing a centre channel speaker myself driven by the LM 3886`s I came across (posted in another thread)...what frequency are they crossed at>??? and I have never heard a dipole are they as good as what I have read?.....oh and nice job on the bevelled openings...great dispersaion I bet!!!


Cheers!!The DIRT®

[planet10]

Originally posted by JOE DIRT®
Nice work!!!...I`m in the middle designing a centre channel speaker myself driven by the LM 3886`s I came across (posted in another thread)...what frequency are they crossed at>??? and I have never heard a dipole are they as good as what I have read?.....oh and nice job on the bevelled openings...great dispersaion I bet!!!

ChrisB's work. I just assemble them. XO is at 10k and they are bipoles not dipoles. The distinction is important.

dave

[jleaman]

how do they sound dave. i wish i got to hear them and put them together when i was there..

[JOE DIRT®]

DOPE!!typo

[planet10]

Originally posted by JasonL
how do they sound dave. i wish i got to hear them and put them together when i was there..

I won't get a chance to give them a real listen since they are off to Shuya's today. They do have the characteristic sound of previous 1197 kit we've built so i am comfortable they are going to sound real fine...

i guess 2 weeks wasn't enuff... there is a whole bunch of stuff we didn't get at while you were here.

dave

[jleaman]

ill come back soon and maybe bring the GF with me this time maybe. When i get some money here soon ill send you some for my scanner and my cd player's.. if you want to toss some thing in the same box that needs fixin you can do that ill then ship it back to you..

J'

[planet10]

Originally posted by JasonL
ill come back soon and maybe bring the GF with me this time maybe.

look forward to meeting Katie... Good thing the guest bed doesn't squeak

dave

[jleaman]

LMAO nice.!!! hahaha yeah that is the best part.