Search:

Type: Posts; User: grumpy; Keyword(s):

Page 1 of 20 1 2 3 4

Search: Search took 0.04 seconds.

  1. In the simplified block diagram for the receiver,...

    In the simplified block diagram for the receiver, it certainly appears that there's both a direct PCM mode (bypassing) DSP and necessarily using the PCM1792 DAC, and also a "Pure Direct" analog path...
  2. Replies
    6
    Views
    622

    Several things going on. Below 20Hz (below port...

    Several things going on. Below 20Hz (below port resonance), you can expect weird speaker noises and complaints from the driver, as the motion will be fairly uncontrolled. A sealed system might be...
  3. Replies
    5
    Views
    844

    the 2254J (vs 2245) ... not a choice I'd make for...

    the 2254J (vs 2245) ... not a choice I'd make for a sub... appears optimized for horn loading (the HLA usage)

    lifted from an old forum thread:
    ...
  4. Replies
    4
    Views
    736

    Right. MA15 kit is explicitly not for the 145...

    Right. MA15 kit is explicitly not for the 145 series per JBL documentation.
    Screws and T-nuts is all I’ve ever seen used with these thicker framed drivers.
  5. Replies
    464
    Views
    232,159

    Hi Richard. interesting, yes. Particularly for...

    Hi Richard.

    interesting, yes. Particularly for newer members, and visitors. :thmbsup:

    But... burying it in a 31-page blog in a sub-forum intended for Professional Amp discussion is probably not...
  6. Replies
    6
    Views
    1,045

    Ha. Yeah, that's where I started. Seemed to sort...

    Ha. Yeah, that's where I started. Seemed to sort of break down (in my thinking anyway) when the bandwidth got smaller when I ran some numbers.
    But as a first order guesstimate, something around that...
  7. Replies
    6
    Views
    1,045

    I get the idea, even if it's a very rough rule of...

    I get the idea, even if it's a very rough rule of thumb ... 400,000 to 600,000?... perhaps higher as the span gets smaller?
    Shooting for a system that isn't overly bassy or trebly... trimming both...
  8. Replies
    3
    Views
    795

    They do look like JBL diaphragms though. If you...

    They do look like JBL diaphragms though.
    If you have some dead 2405s, nothing to lose.

    I'd try to measure responses once installed, and work the worst of any creases out (carefully)... perhaps...
  9. I appreciate your moxie. :cheers:

    I appreciate your moxie.
    :cheers:
  10. Thinking it's just talk about the magnet from a...

    Thinking it's just talk about the magnet from a 12" 2202 ... Putting that on a curious 15" frame and then expecting sound would come out of it.
    Seems like a lot of effort unless the recone parts are...
  11. Replies
    76
    Views
    11,241

    C8R2202 was listed by JBL as the recone kit for...

    C8R2202 was listed by JBL as the recone kit for both 2202A and 2202H... as recently as 2004.

    I'd expect they'd be fine, but someone else here may know better. Materials and adhesives were updated...
  12. Might also do some homework on what a fender d130...

    Might also do some homework on what a fender d130 and Ampex 150-4 are worth, if in good condition.
    You sounded disappointed.
  13. Replies
    76
    Views
    11,241

    If they were mine, I'd spend the extra few...

    If they were mine, I'd spend the extra few minutes to not have 15lbs hanging on a lever arm, torquing the front panel.
    Even a bolt/nut + pipe hanger strap + wood screw would relieve most of the...
  14. My $0.02 worth ( essentially a rewrite of Don's...

    My $0.02 worth ( essentially a rewrite of Don's response ):

    No buzzes, rattles, missing or attenuated sound from a driver, or difference in overall timbre between speakers?
    (it seems they...
  15. Thread: RIP Seawolf

    by grumpy
    Replies
    18
    Views
    5,292

    Was not ready for this... not that one ever truly...

    Was not ready for this... not that one ever truly is.
    Another lost connection. Grateful for the interactions we did have.
  16. Replies
    10
    Views
    2,295

    There's a voltage drive in there somewhere: 89437

    There's a voltage drive in there somewhere: 89437
  17. Replies
    115
    Views
    22,152

    --> 5mm ;)

    --> 5mm ;)
  18. Replies
    10
    Views
    2,295

    good to hear you found a nice pairing!

    good to hear you found a nice pairing!
  19. Replies
    10
    Views
    2,295

    guessing it could be somewhere between bass and...

    guessing it could be somewhere between bass and "liveness", whatever that means... but for this system, I'm guessing bass... which the room can giveth and can also taketh away. Will be interesting to...
  20. Replies
    2
    Views
    1,201

    "JBL 2251J Mid (should be 1: 1 with JBL 2123/2122...

    "JBL 2251J Mid (should be 1: 1 with JBL 2123/2122 after what I have been able to read up on on this forum)"

    The drivers might be less similar than expected (e.g., rising response of 2251). ...
  21. Replies
    10
    Views
    2,295

    May not be the amp. K2 S9900 (similar)...

    May not be the amp.

    K2 S9900 (similar) listening experience: may benefit from bass EQ or even subwoofer(s). Depends largely on personal taste.
    I enjoyed them without augmentation. Owner wanted...
  22. Replies
    2
    Views
    992

    https://jblpro.com/en/site_elements/2420-informati...

    https://jblpro.com/en/site_elements/2420-information

    (16)
  23. Replies
    115
    Views
    22,152

    A nice find. Congratulations :)

    A nice find. Congratulations :)
  24. Replies
    2
    Views
    1,131

    http://www.audioheritage.org/vbulletin/showthread....

    http://www.audioheritage.org/vbulletin/showthread.php?1684-JBL-LX10-crossover-help-needed

    Probably the L-pad (which one can "clean" or potentially replace if really bad) or the 175 driver, which...
  25. Replies
    12
    Views
    2,384

    Does your EQ response look something like this?:...

    Does your EQ response look something like this?:

    http://www.audioheritage.org/vbulletin/showthread.php?33972-JBL-Master-Reference-Monitor&p=393453&viewfull=1#post393453

    (assuming you also...
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4