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Old 20th February 2011, 07:29 PM   #31
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I have TB-W8-1808 in 24 inch wide OB without any kind of filter.
My amp is a factory (kitchen) buildt F4.
The low end is taken care of with a pair of Klipsch RSW-10d subwoofers.
It sounds fantastic. But after reading the article about fullrange&current source i was curious.


Mr Pass. Do you reccomend a particulary filter here?

Hans Erik
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Old 20th February 2011, 07:42 PM   #32
knutn is offline knutn  Norway
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A picture could be nice...
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Old 20th February 2011, 09:18 PM   #33
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I have not played with it enough to recommend a specific
for the F4 or similar. Most likely you will want to consider
taking some of the edge off the upper mid with a small
coil in parallel with a resistor, this in series with the driver.

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Old 21st February 2011, 07:54 AM   #34
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Quote:
Originally Posted by knutn View Post
A picture could be nice...
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Old 21st February 2011, 07:55 AM   #35
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Quote:
Originally Posted by Nelson Pass View Post
I have not played with it enough to recommend a specific
for the F4 or similar. Most likely you will want to consider
taking some of the edge off the upper mid with a small
coil in parallel with a resistor, this in series with the driver.

Thanks
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Old 21st February 2011, 02:33 PM   #36
Bigun is offline Bigun  Canada
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Quote:
Originally Posted by el`Ol View Post
Currently I am working on BLOB (backloaded OB). Conical baffle, opening towards the rear, and placed in front of a room corner. Is in a very early stage however.
Wow, I had some thoughts along these lines last summer, a speaker that looks like a jet engine - any drawings etc ?
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Old 15th February 2013, 08:51 AM   #37
sraudio is offline sraudio  Lithuania
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Quote:
Originally Posted by knutn View Post
Have you tried active equalization instead of simple L/R circuits? What kind of speakers do you use, and how would you describe the difference between current drive and voltage drive?
Don't think about filter circuits, go active equalization. Because you have to correct the response not only at the lowest frequencies. I have a lack of time to post more things on Home, but there is some comparison between OB fullrange current drive system vs Proac response 2.5 clones. Sound difference is big. I don't listen the Proac clones if OB system is in that room.
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Old 15th February 2013, 02:08 PM   #38
guangui is offline guangui  Puerto Rico
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White board with white driver looks very nice.
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