Bozak Speaker Placement

Discussion in 'Listening Spaces' started by RHCP4LIFE, Nov 23, 2014.

  1. RHCP4LIFE

    RHCP4LIFE New Member

    Messages:
    26
    So I have recently inherited some nice audio equipment.

    A McIntosh MC2500, C-29.. Some AudioControl Processors and some massive Bozak CS-310B-CONT Speakers(24Dx36Wx48H.)

    I have moved into a new place recently and trying to decide where to place the speakers.

    The room is fairly large. About 30'X25'. It is divided into Living area and Kitchen/Dining. Im trying to decide where to put the large speakers. Should i put them directly in front of the "living area or should i spread them out over the whole room of living and kitchen/dinning.


    I will be sitting in the living room the most. What do you think will give the best sound. I know the Bozak Concert Grands are supposed to be listened to at 20' away.

    Here is a sketch of the area. The areas in the red are the available space for the speakers. [​IMG]
     
  2. RHCP4LIFE

    RHCP4LIFE New Member

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    I am thinking I'm going to place the speakers in front of the seating area.
     
  3. Rybeam

    Rybeam Super Member

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    Not familiar with that model Bozak, found nothing helpful on net. Generally the large vintage Bozaks are designed to sit at least 15 feet from in the middle. Cone tweeter models can be a bit directional so toe them in a bit.
    Place the speakers about 6-8 feet apart and spend time listening. Move them apart until you start to hear two singers in the middle than start moving them back together. The sweet spot is there somewhere, it could take weeks, months or years to find the PERFECT sweet spot.
    Congratulations on getting a nice set-up to start with.
     
  4. vinyldavid

    vinyldavid Proud Jaguar Owner! Subscriber

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    The C-310B is an upright Concert Grand.

    Inherited some nice audio gear, indeed!

    I have only heard CG's in one system, but loved them. I would place them 3 or 4 feet out of corners, aimed so the tweeters cross about 3 feet in front of the listening position (provided it's a large room). Tweak from there.
     
  5. RHCP4LIFE

    RHCP4LIFE New Member

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    26
    Thanks guys

    Here is a picture with one set up testing out the chanels again. Also will be the listening living room I plan to put a TV where the speaker is and place the speakers on each side for now.
    [​IMG]

    Overall room just getting moved in so everything is a mess
    [​IMG]
     
  6. RHCP4LIFE

    RHCP4LIFE New Member

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    Here it is now


    [​IMG]
     
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  7. Sam Cogley

    Sam Cogley Last of the Time Lords Subscriber

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    Do these have the aluminum tweeters in the line array, or the paper tweeter in the hemispherical array?
     
  8. RHCP4LIFE

    RHCP4LIFE New Member

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    I believe they are in a linear array. If I feel the face of the speaker I can feel a long strip going up and down towards the top
     
  9. Sam Cogley

    Sam Cogley Last of the Time Lords Subscriber

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    Good. I don't think they developed that design until after the B200Y was introduced in 1961. The original hemispherical array supposedly does weird things to the soundstage when used in stereo pairs, no matter which version of the drivers are used.

    Those are hellaciously good speakers, I'd love to hear a pair someday.
     
  10. damacman

    damacman Blown and Injected Subscriber

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    What if you placed the speakers on the wall to the right of their current location and rearrange your furniture to face them? It appears that you could spread them out more and at the same time enjoy them throughout the room. I simply can't imagine speakers of that size sounding their fullest with them so close to one another.
     
  11. RHCP4LIFE

    RHCP4LIFE New Member

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    Ok so i have recently moved and unfortunately the speakers will not fit in the living room or any room in the house. Fortunately I bought a garage that came with a house...... Anyways they have to go in the garage as the basement is not worthy (mostly utility and laundry room). The garage is about 40'x30', insulated and heated. I plan on putting the Bozak Concert Grands on casters to be able to move them out of the way if need be, as well i need to create a amplifier rack as well on casters. My setup is a MC2500, C29, a couple processors mostly . I have a turntable but i feel like that should probably stay in the house as im not sure how dusty things will be. Which brings me to my next point. I want to create a rack/enclosure to create positive pressure and a filter, but while still having the faceplates exposed. I have been looking at some server racks but may end up creating something like mine.
     
  12. twiiii

    twiiii Super Member

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    I
    deally the angle at the vertices of the tri-anle where you are seated should not be greater than 45 degrees unless you plan on turning the speakers toward the listening position. I listen to mine at 17 Ft with them spread about 12 ft apart line array to line array. A 2500 is way to much power for Grands. If you have Alnico woofer magnets very peaks should be not much more than 200 watts. Though I will admit I have done more using Crown DC-300 A's bi-amped with the woofers wired in parallel, 2 ohms. Amps were rated at 525 watts at 2 ohms below 400 hz. The Dc-300 for the mid/tweeter put out about 190 watts 8 ohms. Today I used Mac 207, tri amped. 360 watts, 2 ohms, 240 watts, 8 ohms 0hms. If you have ceramic magnets on all the drivers as long as the meters don't go over 250 and the power guard stays off you should be fine. My favorite amp for non bi amped Grands was the MC 3500 and they were a great match in that period of time. I would rather have bi-amped Grands with amps with out autoformers for the high damping factor to control the woofers. But as your amps have a respectable damping factor if you place the amps next to the speakers will help greatly nwith super short speaker cables. But that big coil in the woofer circuit makes the woofers kind of fuzzy, that's why most Symphony and Grand owners bi-amp. . Did you know if you take 2 Grands and place then side by side and run them in mono the bass will extend below 16 HZ like "Big Bertha" in a large room .
     
  13. RHCP4LIFE

    RHCP4LIFE New Member

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    Wow thanks for info!
     
  14. RHCP4LIFE

    RHCP4LIFE New Member

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    Just got into a new place. Speakers are now in a 24x30 room! Also picked up some smaller bozak's I for get the module but 2 tweeters in front of a 12. A 2 way. IMG_20161001_083603.jpg 20160930_191144.jpg
     
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  15. 70'sAudio

    70'sAudio Where it All Started for Me Subscriber

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    Those Will Fill The Room with Music Easily ;)

    Thanks for Sharing, Mike.
     
  16. Todd Dodds

    Todd Dodds AK Subscriber Subscriber

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    Rats.
    I've been sitting here since your last post last October, waiting for you to put 'em up for sale.
    Enjoy...you're sitting pretty now.
     
  17. RHCP4LIFE

    RHCP4LIFE New Member

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    The small speakers are b312'still and I currently do not have a amplifier for them. Right now I'm powering them with a class D car amp I have powered off a 13.8v power supply... not the most ideal setup but I've been looking at amps and I'm not sure how much power I need to drive these 312s..

    My current amplifier setup lol and speaker placement as of now.
     

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  18. BOUXY

    BOUXY Super Member

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    These Bozaks are really efficient,94 - 96 db efficient.Don't really need lots of power at all:)
     
  19. RHCP4LIFE

    RHCP4LIFE New Member

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    Thanks,

    I just pulled the trigger on a Onkyo TX-8020 Stereo Receiver 50w at 8 ohm should work nicely . Also has nice knobs for easy adjustment on bass, treble and balance and at $150 it should work well
     
  20. RHCP4LIFE

    RHCP4LIFE New Member

    Messages:
    26
    The "game room"
    [​IMG]

    Recently fixed my realistic turntable lab 395. Turns out the rcas where both bad. Cut up a old rca cable and resoldered new rca leads on.

    Also did a deoxit on the c29 a couple months back. Still have a week channel on the tuner.
     

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