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Old 29th December 2010, 11:41 AM   #1
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Default Super-Tysen

Dave,
I have been reading threads about your Tysen speaker and came across a post that suggested you were working on an SDX7/Alpair 7 combo. Did you ever finish that speaker as I am very interested in using an ALpair7 or 10.2 in this type of enclosure as my first speaker. Side note: Not knowing much about speakers, why have you chosen side firing woofers? THanks.
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Old 31st December 2010, 07:41 AM   #2
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I still haven't finished designing it yet. I have a number of preliminary drawings, but am not yet satisfied with what i have come up with so far.

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Old 31st December 2010, 10:54 AM   #3
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why the side firing woofer? Is it because it is crossed low and down low the woofer is firing into 4pi space and directivity is not an issue? Does adding a woofer and freeing up the Alpair from going low improve the response/sound of the Alpair because of reduced excursion? forgive me if these are not the right terms? I have followed many of your threads and need help as i am going to purchase one of the two Alpairs mentioned now that they are available.
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Old 31st December 2010, 11:38 PM   #4
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At the frequencies the woofers are used in, they are omnidirectional. Side firing means i can get them closer to the mid-tweeters, creating, in essence, a large co-axial loudspeaker.

Yes, relieving A7(s) from low bass improves their mid-top performance.

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Old 1st January 2011, 01:25 AM   #5
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Is the chamber of the woofer seperated from thr FR? If not, wont it affect the FR from inside the cabinet. Based on a 16' X 16' room, should I go with 10.2 or 7?
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Old 1st January 2011, 02:41 AM   #6
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Yes. Woofers have there own (common enclosure). I'd like to get the A7(s) into their own little TLs, that is proving tricky.

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Old 1st January 2011, 06:07 PM   #7
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If sealed and radiating into 4pi space, what is the need for attempted coaxial location, better phase coherence? Also, I read an article from Olsher saying that he did not like the idea of using drivers with different cone material. What is your opinion. I found this 8" Audax woofer with more efficient SPL response, Would it work as well as SDX7. Seems to have more even response curve as well.

https://www.madisound.com/store/prod...oducts_id=8930
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Old 1st January 2011, 09:23 PM   #8
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The closer together all the sources, the better.

There probably is something to the common cone material idea, but, once tweeked, the SDX7 works really well.

I am sure that there are a lot of good mid-woofers that can serve the same role as the SDX7. I have some Silver Flute here as well to play with -- and the Mark Audio #6/EL166 works well in another project.

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Old 1st January 2011, 09:33 PM   #9
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Thank you for the info and the time. One last question, between the 7 and 10.2 in this configuration, which will be able to play a greater range of music. Which would you choose from your experience. I know you havenmt played with the 10.2 much, but you have as good of an idea of its ability as anybody. I guess that was more than one question!
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Old 2nd January 2011, 10:41 PM   #10
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Actually i have played with A10.2 (we got a hand built set of production prototypes for diyFEST), but not as extensively as A7. ATM, with bass support, i'd be choosing A7.

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