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Build Thread: SR71-inspired Center Channel

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  • rvsixer
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Thanks again for the info lunchmoney.

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Here's a pic from the back, all buttoned up. None too pretty from the back, but it's buried in the cabinet, so it doesn't matter. Unfortunately I forgot to take a picture of the completed crossover.



    And here's the final crossover schematic:

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by rvsixer View Post
    Thanks for the listening test!

    In the above statement, am I correctly reading that Dan's SR71's do not have the nasalness/hoot? If so, what changes were made to get there (i.e reduced BSC, stuffing adjustments, etc)?
    Yes, that's what he means. The only change I made was to reduce the value of the woofer inductor from 3.3 mh to 3.0 mh.

    This reduced the BSC a bit, which brought the mids forward a bit more, making them a bit less heavy and laid back sounding.

    Not a huge change, and you shouldn't think that there was some big problem with SR71's. I chalk it up to preference, and the sort of tweaking one might do to any speaker.

    Leave a comment:


  • rvsixer
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by mzisserson View Post
    My one, constant gripe with the SR 71's has always been a bit of a nasalness/hoot to them that was consistent in a couple of pairs I have heard. It is a real testament to Dan that he carefully looked at his situation, worked with Zaph, used his noodle and ears around BSC, which ultimately resulted in the best set of 71's I have heard.
    Thanks for the listening test!

    In the above statement, am I correctly reading that Dan's SR71's do not have the nasalness/hoot? If so, what changes were made to get there (i.e reduced BSC, stuffing adjustments, etc)?

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by johngalt47 View Post
    Where did you get that weatherstripping?
    We had some leftover at work. Pretty sure you can get it at Mcmaster.com

    Leave a comment:


  • johngalt47
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Where did you get that weatherstripping?

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by mzisserson View Post
    Had a few beers, pizza and a good listen today of this setup. Thanks!!! :D

    It would be VERY hard to find a retail home that is anywhere near the build cost of this. It was not just good, it was VERY good.

    Very smooth WIDE open, and detailed. It was nice to hear a home theater that did not foster the feeling it was meant for a great 5min demo and that is all, but was well balanced, good to the ears (none of that tweeter boost for "better" detail) at just about any volume. For real living room situations vs. man-caves, this really is a good option.

    Easily stated: The center by itself was stellar in capturing vocal realism, from any source we played.

    My one, constant gripe with the SR 71's has always been a bit of a nasalness/hoot to them that was consistent in a couple of pairs I have heard. It is a real testament to Dan that he carefully looked at his situation, worked with Zaph, used his noodle and ears around BSC, which ultimately resulted in the best set of 71's I have heard.

    I am unsure his $200 receiver was doing them much justice, though from what I gather that is going to change.
    Thanks Mike! Glad you liked it. Great to get your input. Again, I'm still amazed that we didn't change anything. I thought it was there, but needed your experienced second opinion.

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by ckmoore View Post
    What are you running in the rear?
    Paradigm 5.25" POS Series bookshelves, the limited edition Crapola versions I believe.

    They'll soon be gutted and turned into New Horizons.

    Leave a comment:


  • ckmoore
    replied
    Re: Build Thread: SR71-inspired Center Channel

    What are you running in the rear?

    Leave a comment:


  • mzisserson
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Had a few beers, pizza and a good listen today of this setup. Thanks!!! :D

    It would be VERY hard to find a retail home that is anywhere near the build cost of this. It was not just good, it was VERY good.

    Very smooth WIDE open, and detailed. It was nice to hear a home theater that did not foster the feeling it was meant for a great 5min demo and that is all, but was well balanced, good to the ears (none of that tweeter boost for "better" detail) at just about any volume. For real living room situations vs. man-caves, this really is a good option.

    Easily stated: The center by itself was stellar in capturing vocal realism, from any source we played.

    My one, constant gripe with the SR 71's has always been a bit of a nasalness/hoot to them that was consistent in a couple of pairs I have heard. It is a real testament to Dan that he carefully looked at his situation, worked with Zaph, used his noodle and ears around BSC, which ultimately resulted in the best set of 71's I have heard.

    I am unsure his $200 receiver was doing them much justice, though from what I gather that is going to change.

    Leave a comment:


  • rvsixer
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Cool, thanks.

    Leave a comment:


  • lunchmoney
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Originally posted by rvsixer View Post
    Love the asymmetric look and appreciate the time and effort you put in your build threads.

    I see the outside box dimensions, I may have missed it but do you have the driver location/spacing info? Keep us posted on how the tweaking/voicing goes.
    Thanks. Once I finish voicing I'll post a final schematic and a dimensioned drawing. Stay tuned...

    Leave a comment:


  • rvsixer
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Love the asymmetric look and appreciate the time and effort you put in your build threads.

    I see the outside box dimensions, I may have missed it but do you have the driver location/spacing info? Keep us posted on how the tweaking/voicing goes.

    Leave a comment:


  • GTB
    replied
    Re: Build Thread: SR71-inspired Center Channel

    This may finally resolve my quandery.......I'm feeling a Blackbird with two SR71's as its wingmen is in my future.

    And, its a good feeling!

    Leave a comment:


  • pres589
    replied
    Re: Build Thread: SR71-inspired Center Channel

    Seems like the whole thing could be put together with a good sub for about $2250? I've never heard an SR71 but going off of numerous enthusiast reviews makes me believe this plus something like that sub Paul Carmody built for his own HT setup should blow away a 5.1 setup purchased from a store for similar money.
    Last edited by pres589; 01-22-2011, 07:45 PM.

    Leave a comment:

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