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Multi-Way Conventional loudspeakers with crossovers

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Old 29th March 2011, 01:44 PM   #11
infinia is offline infinia  United States
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Quote:
Originally Posted by Alex M View Post
.

Is there any formal relation between Usher and Scan, or are the former a less than subtle rip=off?
"Technology transfer" via hired guns.
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Old 29th March 2011, 02:03 PM   #12
AllenB is offline AllenB  Australia
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So I heard, they even sourced the cones from the same supplier. I also heard that they sounded proportionate with their price difference, but this was a couple of years ago.
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Old 29th March 2011, 03:09 PM   #13
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I built the kit... well i built my own cabinets and crossovers before they offered the preassembled crossover.

I have been very happy with them but i dont pretend to have "goleden ears"..

I have also been thinking about modifying the crossovers (ie Jays design) just for fun as i already have the most exspensive parts (30uf polyprop caps) lying around.

I had looked at his crossover design not too long ago i will try to post a link later. It seems lik people either love or hate the mod...
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Old 29th March 2011, 04:31 PM   #14
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here is the link to Jay K's crossover modification


Usher 701 Kit Analysis and Modification Suggestion
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Old 29th March 2011, 08:44 PM   #15
infinia is offline infinia  United States
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Default oranges to apples

Quote:
Originally Posted by Flappytango View Post
here is the link to Jay K's crossover modification

Not really a crossover mod. both drivers he used are different than the PE Usher kit the OP is inquiring about. have you read the link? You really can't mix and match drivers from each design with the "modded" Xover.

Again I disagree with the re-design assumptions. The analysis is not accurate based on his input acoustic data is flawed to begin with. Ideally the responses should be measured from the correct drivers mounted on the baffle under consideration. Where did his come from?
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Old 30th March 2011, 02:33 AM   #16
blue934 is offline blue934  Canada
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[QUOTE=infinia;2520865]Not really a crossover mod. both drivers he used are different than the PE Usher kit the OP is inquiring about. QUOTE]

not sure what you're talking about infinia.? if you check out the diagram at the bottom of that link, it shows Jay's version of the 8945A/9930 kit.
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Old 30th March 2011, 04:07 AM   #17
infinia is offline infinia  United States
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I read about this mod a couple of years back, guess he added some other mods since then. I referring to the 1st paragraph as a quick summary review.
I would suggest 1st changing the stock crossover tweeter pad if some users feel there isnt enough BSC, high end is too hot, or their listening room warrants. I looked at the BSC with LTspice, it is fine when the tweeter level is adjusted flat. It takes some measurements with a microphone on and off-axis to verify a design is my main concern about all this Xover mod business.
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Old 11th April 2011, 07:40 PM   #18
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Quote:
Originally Posted by Flappytango View Post
here is the link to Jay K's crossover modification


Usher 701 Kit Analysis and Modification Suggestion
Do you happen to have Jay's original 8945p with the HDS tweeter writeup or schematic of crossover? Too bad he dropped his website as he had several interesting designs, especially the ones using two (per side) midwoofs. Thanks.
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Old 11th April 2011, 09:24 PM   #19
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Maybe this helps. Some URL's...
Usher 8945P 2-Way
Usher 8945P 7" / Peerless HDS 1" MTM
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Old 11th April 2011, 11:06 PM   #20
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Originally Posted by Inductor View Post
Thanks for the links. How did you find them? I must find out how to use this type of tool.
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