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Old 1st August 2012, 12:46 AM   #11
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Quote:
Originally Posted by sreten View Post
Hi,

Except it probably doesn't, depending. 3"ers make the best FR's
but dispersion wise can't touch adding a tweeter, or 4"+ tweeter.

YMMV but the reduced BSC version of this :
Zaph|Audio - 4" Bargain Mini
Possibly built sealed, is hard to better.

rgds, sreten.
I'd probobly agree with you if we weren't talking about such a nearfield application. I've built and used quite a few small 2 ways and at three feet and less, the drivers don't sum as well as at 5 feet. The alternatives are a 3" Fullranger which I agree is the optimal size, a coincident/coax, or running a B&G Neo8 from 800 up to 20khz with a bass unit below. There's been quite a bit of favorable opinions on both the Fountek and new Fostex 3". Your thoughts?
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Old 1st August 2012, 03:58 AM   #12
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my 2 cents.

Click the image to open in full size.

Scott's will be similar to the 3rd ones.

dave
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Old 1st August 2012, 10:41 PM   #13
tvrgeek is offline tvrgeek  United States
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Chris, yes I have read the ideas on treatment. You can see my playing with foam to verify the issues, and I have already mentioned I am investigating some other materials on some Sony drivers. (cheap). The baskets maybe so bad and the cones already treated that I am not learning as much as I hoped.

Understanding a bit about vibration, there is nothing pseudo science about the methods Planet10 is using. If they had several million dollars for laser inferometry measurement, it would be quite easy to understand. ( and they could get there quicker) This was discussed in AES as far back as you care to go. I remember several RCA papers on it. Experimentation is still a valid engineering method. I have not heard their drivers, but I have heard the 125 and the 125 with foam stuck all over it. The difference is big. That said, I would choose a driver without this problem next time. 105, 88, Mark...... I feel like we are doing the OEMs's job when we are having to mod $50 drivers with tricks that should be reserved for $2 parts. It's fun never the less.
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Old 1st August 2012, 11:06 PM   #14
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Quote:
Originally Posted by tvrgeek View Post
... If they had several million dollars for laser inferometry measurement, it would be quite easy to understand...
Actually laser interferometry may not be able to look at what we need to look at to determine what EnABL does. I'm guessing that a microFlown might be the more appropriate tool -- and to get the most out of it you'd need an anechoic facility, so a milliom bucks would be a budget facility.

dave
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Old 1st August 2012, 11:11 PM   #15
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by mayhem13 View Post
I'd probobly agree with you if we weren't talking about such a nearfield
application. I've built and used quite a few small 2 ways and at three feet
and less, the drivers don't sum as well as at 5 feet. Your thoughts?
Hi,

Zaph is no slouch, he's posted vertical integration, but not bothered
with horizontal, because its simply not an issue. YMMV but Zaph
tends to get driver integration bang on, he knows his onions.

(He uses assymetry in the target responses to phase align the
drivers, which really only shows up in the vertical axis plots.)

As he himself stated, getting phase to match at x/o is difficult.

rgds, sreten.
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Old 2nd August 2012, 08:23 AM   #16
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What about the Jordan JX6RHD? They will run down to about 100Hz, or the Jordan JX92S if you have room, the will run much lower, at the expense of a larger box.
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Old 2nd August 2012, 06:13 PM   #17
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Quote:
Originally Posted by sreten View Post
Hi,

Except it probably doesn't, depending. 3"ers make the best FR's
but dispersion wise can't touch adding a tweeter, or 4"+ tweeter.

try this
Tang Band W3-1797S 3" Neodymium Midrange Driver 264-888
it's a revolution in sound
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Old 2nd August 2012, 06:55 PM   #18
chrisb is offline chrisb  Canada
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Originally Posted by DYNABLASTERTUNERS View Post

not an uncommon occurrence with TB drivers, at least via Parts Express - "this driver no longer available" -
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Old 2nd August 2012, 07:38 PM   #19
sreten is offline sreten  United Kingdom
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Originally Posted by DYNABLASTERTUNERS View Post
Hi,

BMR's (balanced/bending mode radiators) are an interesting proposition :
HiWave HIBM85C20-4/DD 4" BMR Full-Range Square Speaker 4 Ohm 297-2150

Combined with PC digital EQ (the topend is a bit wayward) could work, though
the basic response indicates no BSC would be needed, no EQ might work well.

rgds, sreten.
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Last edited by sreten; 2nd August 2012 at 07:43 PM.
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Old 8th August 2012, 01:00 PM   #20
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Quote:
Originally Posted by mayhem13 View Post
a B&G Neo8 from 800 up to 20khz with a bass unit below.
Appreciating, but wanting to replace my Monsoon Planar desktops, I'd be curious how well the RS210HF would handle this - I've heard it works well up to 700 or 800Hz.

That being said, my BB ply just came in for the A6p's and RS210 waiting patiently in my basement for desktop duty.
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