Sunosub II to be fired up tonight.

Discussion in 'Archived Threads 2001-2004' started by Patrick Sun, Mar 28, 2001.

  1. Patrick Sun

    Patrick Sun Moderator
    Moderator

    Joined:
    Jun 30, 1999
    Messages:
    38,644
    Likes Received:
    418
    I finally get to move Sunosub II into the living room tonight. I've been waiting for the paint to dry (I've come to the conclusion that I suck at spray painting, and just covered up my errors with a silver colored spray paint that gives a hammered metal look for the top endcap).
    Sunosub II specs:
    10 ft^3 internal volume
    24" wide sonotube (around 41" long internally)
    One 6" port 22" long (tuned to 16.5Hz)
    1 Tempest driver wired as a 4 ohm load
    I've got the construction pix, but need to organize them (hopefully I can post some shots from my new website - finally gave in and signed for a more permanant "patcave.com" website with 500MB of webspace - needed all that space for all my DIY construction pix). [​IMG]
    Stay tuned!
    ------------------
    PatCave ; HT Pix ; Gear ; Sunosub I + III ; DVDs ; LDs
     
  2. Lewis Besze

    Lewis Besze Producer

    Joined:
    Jul 28, 1999
    Messages:
    3,134
    Likes Received:
    0
    What amp do you use?
    ------------------
    "You Hungarians always disagree"
     
  3. Patrick Sun

    Patrick Sun Moderator
    Moderator

    Joined:
    Jun 30, 1999
    Messages:
    38,644
    Likes Received:
    418
    Lewis, I have a Peavey CS800X - a 2-channel amp 400W/ch into 4 ohms or 600W/ch into 2 ohms, and it's bridgeable.
    I feel like another big doofus head because I was having problems getting any output from the driver. I checked the amp, the receiver, the wiring, everything I could think of. Finally I resigned myself to having to remove the driver and making sure I could get it to make some vibrations going from a known good amp source directly, bypassing the terminal cup connection. Well, I discovered that I had wired one of the driver's terminal out of phase with the other terminal on the terminal cup, so of course I would get no vibrations from the driver. The two parallel connections effectively cancelled each other out at the magnet side. Doh! Once I corrected my mistake, Sunosub II came to life. [​IMG]
    Here's some preliminary numbers (adjusted) for Sunosub II
    Near field
    Hz SPL
    10 94
    12 91.5
    15 92
    17 96
    20 99.5
    22 101.5
    25 102
    28 104
    32 105.5
    36 106.5
    40 107.5
    45 108
    50 107.5
    56 107.5
    63 107.5
    71 107.5
    80 107.5
    89 106
    100 107
    112 103
    The 1 meter response looks pretty terrible right now:
    Hz SPL
    10 81
    12 89.5
    15 91
    17 87
    20 87.5
    22 87.5
    25 87
    28 88
    32 85.5
    36 89.5
    40 92.5
    45 94
    50 96.5
    56 100.5
    63 98.5
    71 94.5
    80 93.5
    89 92
    100 91
    112 95
    ------------------
    PatCave ; HT Pix ; Gear ; Sunosub I + III ; DVDs ; LDs
     
  4. Lewis Besze

    Lewis Besze Producer

    Joined:
    Jul 28, 1999
    Messages:
    3,134
    Likes Received:
    0
     
  5. Patrick Sun

    Patrick Sun Moderator
    Moderator

    Joined:
    Jun 30, 1999
    Messages:
    38,644
    Likes Received:
    418
    Lewis, yep, big ol' room hump in the 50's. I am not really into max SPL. [​IMG]
    Here's an interim photo of Sunosub II. I think I'm going to ditch the silver silk covering and go with black ribbing for a better form-fitting look to it.
    [​IMG]
    ------------------
    PatCave ; HT Pix ; Gear ; Sunosub I + III ; DVDs ; LDs
     

Share This Page