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Thread: JBL Synthesis - Room Design and Treatment

  1. #46
    Senior Member jblsound's Avatar
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    Quote Originally Posted by Titanium Dome View Post
    According to JBL, this system will work in rooms from 1500 cu. ft. to 16,000 cu. ft. So I can put it in a 2,505 cu. ft. room or a 2,260 cu. ft. room. The 2,505 room has better dimensions (8'8"x15'5"x16'6"); the other room is basically a 14'6" square with 10'9" ceilings.

    Any suggestions?
    15' 5" x 16' 6"! I'd have to rethink that room for all that speaker system. I'd call that getting to too narrow and like you say the other room is even worse.

    But on second thought, I suppose those vertical horns will work better being stuck in the corners to the sides of the screen, than a normal speaker system would. Which is why I built my LR to the max width I could get (17.5') and still have a front deck.

    I've done enough remodels, of both houses and hotel/casinos, to know there will always be unforeseen problems that jump right at you as you tear into the existing, that are totally unexcepted, no matter what the old blueprints might show.
    Living in the Land of the Sun

  2. #47
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    Quote Originally Posted by JBL 4645 View Post
    So you mean to say you’re fixing them flush with the wall surfaces?
    There is no other way.
    Out.

  3. #48
    Senior Member jblsound's Avatar
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    Quote Originally Posted by Titanium Dome View Post
    There is no other way.
    I've only had onwalls, but from what I've read over the years, having inwalls make the speakers completely disappear, as far as being able to be localized.
    Living in the Land of the Sun

  4. #49
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    Things are moving

    The acoustic panels are being manufactured in Florida as I write. It'll take about three business days to manufacture, four days to ship, then it's install time! I have to have the room mostly ready by then.
    Out.

  5. #50
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    Wire

    A 500 ft. spool of UltraCap is on its way from NY. I got the 14/4 version.

    Each SAM1HF/SAM2LF requires its own twisted pair, so I'll need four conductors for each of the three front channels. The S4Ai requires two twisted pairs, so I'll need four conductors for each of the surround channels.

    The two S1S-EX subs only need a single pair, but I'll just run four conductors anyway and double them up. OOOOHH! It's like bi-wiring subs.

    This stuff has 105 strands per conductor.
    Out.

  6. #51
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    Ceilings

    I got some custom-tinted Glidden flat paint at Home Depot. It's a dark, dark brown, almost black.

    Since the ceiling is divided into four quadrants, I'm planning on painting the front two quadrants with this dark paint to cut down on reflections. Depending on the look, I may do the whole thing. I may paint the front wall, too, despite the fact that the proscenium will be covered in black acoustical panels and fabric. I doubt that any front wall will be showing.

    I also got the lumber for the equipment closet, which we'll start this weekend.
    Out.

  7. #52
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    Racks

    Early Saturday morning I'm driving to Santa Ana, CA to pick up two 20 space equipment racks. These will be mounted inside the closet.

    The closet will have a perforated floor with a filter so the fan at the top can draw the air through the racks (and especially the amps) and exhaust the hot air.

    Dividing the stack into two shorter racks makes heat removal easier and provides some additional wall space at the top for installation of an S4Ai.
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  8. #53
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    Black Crushed Velvet

    Twenty yards of black crushed velvet is on its way from the SF Bay Area. This will go on the walls above about 27" except where the acoustic panels are.

    I still haven't decided if I want to put some batting behind it. It won't have much practical benefit except for making the thing look more plush, I guess. Anyone have any thoughts?

    I plan to keep the bottom 27-28" of the side and rear walls bare, except in the four corners where there will be bass traps.
    Out.

  9. #54
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    Jbl S4rfb

    I've tried to locate and purchase the S4Ai retrofit brackets, Synthesis® S4FRB, but those who claim to sell them are out of stock. If I can't locate some soon, we'll fabricate our own, I guess. The brackets are probably more of a convenience than a necessity.

    If anyone has four of these sitting around, let me know.
    Out.

  10. #55
    Senior Member jblsound's Avatar
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    Quote Originally Posted by Titanium Dome View Post
    The acoustic panels are being manufactured in Florida as I write. It'll take about three business days to manufacture, four days to ship, then it's install time! I have to have the room mostly ready by then.
    I guess you've never seen these, right there in CA, nothing like cotton for clothes or acoustic panels.
    http://www.soundaway.com/Acoustic_Co...05_p/17805.htm
    Living in the Land of the Sun

  11. #56
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    Quote Originally Posted by jblsound View Post
    I guess you've never seen these, right there in CA, nothing like cotton for clothes or acoustic panels.
    http://www.soundaway.com/Acoustic_Co...05_p/17805.htm
    Seen 'em, felt 'em, didn't choose 'em. Pretty nice product, but not what I wanted.
    Out.

  12. #57
    Administrator Robh3606's Avatar
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    Hey where are the pictures??

    You can't take us through thus without them.

    Rob
    "I could be arguing in my spare time"

  13. #58
    JBL 4645
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    Quote Originally Posted by Robh3606 View Post
    Hey where are the pictures??

    You can't take us through thus without them.

    Rob

    I agree even if its picture of household pet, pictures please.

  14. #59
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    OK, I'll take a picture of the dark brown paint I put on the ceiling, a picture of the construction materials, and a picture of the covered equipment.
    Out.

  15. #60
    JBL 4645
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    Quote Originally Posted by Titanium Dome View Post
    OK, I'll take a picture of the dark brown paint I put on the ceiling, a picture of the construction materials, and a picture of the covered equipment.
    Yeah it will be like watching paint dry.

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