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Old 16th February 2010, 12:06 AM   #1
jcbw is offline jcbw  United States
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Default Need design help for charity auction

Hello
I hope someone out there is willing to provide me with some design help. I plan on building three way speakers for my local church charity auction coming up in mid April, I would like to use NOS drivers that I have accumulated over the years. I can handle wood working OK, I really need help with : 1. driver selection, 2. crossover and box design.

I already have a pair of Scan Speak 13M/8640 and two pairs of Axon 10k01 woofers. It would be great if I could use the Axon drivers- I know they make a very odd pair with the SS...
I am open to any tweeter option as long as the cost is reasonable (around $100 -$150 per pair).

I hope someone on the forum would be kind enough to donate their time and expertise?

Let me know
Jean
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Old 18th February 2010, 12:47 PM   #2
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Scan Speak 13M/8640
Axon 10k01 Woofer

Your question seems quite honest to not deserve an answer. Is there any more information (the necessary T/S param. specs and curves) on the woofer?

Quote:
Originally Posted by jcbw View Post
I am open to any tweeter option as long as the cost is reasonable (around $100 -$150 per pair).
A possibility is this
Beston RT002A Ribbon Tweeter
BESTON RT002A

Dr. Mark Says - Dayton RS 150S-8 and Beston RT002A crossover and box alignment

Last edited by Inductor; 18th February 2010 at 01:14 PM.
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Old 18th February 2010, 01:09 PM   #3
pmolina is offline pmolina  Brazil
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Nothing that a good googling on the net can't solve. I think we have a starting point for the Axon woofers: http://www.zalytron.com/pictures/Axon%2010K-01.PDF
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Old 18th February 2010, 01:34 PM   #4
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Originally Posted by pmolina View Post
Nothing that a good googling on the net can't solve. I think we have a starting point for the Axon woofers: http://www.zalytron.com/pictures/Axon%2010K-01.PDF
Good job pmolina.
It's pointing to a BR box from 35L/39Hz to 70L/43Hz (WinISD).
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Old 18th February 2010, 02:04 PM   #5
pmolina is offline pmolina  Brazil
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My bet on the tweeter having in mind your budget, would be the SEAS Prestige 27TDFC (H1189) Textile Dome. Keep in mind that you already own expensive midranges, at $200 ea.
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Old 19th February 2010, 12:03 AM   #6
jcbw is offline jcbw  United States
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Thank you everyone. The Seas definitely would work for the price range, (I looked it up at Madisound). I also looked at 27TBCD/GB-DXT (H1499), also in the same price range- they have been getting great reviews as well!. Can someone provide input / recommendation on the crossover? Madisound states they would only design XO for drivers they sell. I really appreciate the help! Please remember this is going to benefit my local church!

Thank you again!
Jean
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Old 19th February 2010, 10:40 AM   #7
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Originally Posted by jcbw View Post
... I also looked at 27TBCD/GB-DXT (H1499), also in the same price range- they have been getting great reviews as well!.
Unless you know what you are doing...
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Old 20th February 2010, 03:15 PM   #8
jcbw is offline jcbw  United States
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Thank you for the input. As I stated I will implement what the members of this forum will recommend for driver selection and XO design. I understand that it takes a lot of experience to get it "right", I just want to get it "close". I appreciate the help!

Jean
Austin Texas
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Old 20th February 2010, 03:35 PM   #9
pmolina is offline pmolina  Brazil
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Well, I am a little bit dusty on Xover design. The first thing is to generate a FRD file for the Axon driver. We don't have an impedance graph of this driver so we will have to simplify the calculations. I am attaching the resulting FRD file.
Over the weekend I'll try to find the FRD and ZMA files of the midrange driver and either tweeters we mentioned.
Attached Files
File Type: zip Axon 10K-01.zip (3.4 KB, 9 views)

Last edited by pmolina; 20th February 2010 at 03:38 PM.
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Old 20th February 2010, 05:57 PM   #10
jcbw is offline jcbw  United States
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Thank you Pmolina!
I found one file at:
Seas 27TDFC - H1189.frd
Driver FRD & ZMA files

I am still looking for the others
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