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  1. Replies
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    11,467

    K2's hands down. I know what I'm going to say...

    K2's hands down.

    I know what I'm going to say is unpopular, but what the ell.

    Lose all the cheap crappy internal wire/inductors/resistors/capacitors, and the circuit board with the super cheap...
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    To me, it's more trivial to alter the OEM...

    To me, it's more trivial to alter the OEM crossover in a way that you can revert it back to stock, vs creating a new crossover network.

    Using the existing inductors alone makes it easier, (and...
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    4,012

    Hi, I'm not convinced the Nelson Pass design is...

    Hi, I'm not convinced the Nelson Pass design is any better than stock. You might be better off upgrading the film caps and all the wire including the wire to the LPADS.

    In the end, I found bone...
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    JBL K2 S9900 Bottom plate and feet

    There is a black plate screwed onto the bottom of the S9900, 5 screws.

    Does anyone know if this plate is plastic or? I thought it might be wood but doesn't seem like it.

    Also, the stainless...
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    9,441

    Acoustic panels may work with denim,...

    Acoustic panels may work with denim, strategically placed, bass traps, doubt it. Below ~100hz, unless it's like over 18 inch thick, will just likely deaden above 150hz even more. Even if it's thick...
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    I've found it's usually the room, and placement,...

    I've found it's usually the room, and placement, there's threads out there like the Sumiko speaker setup, etc., It takes time. And patience for sure. I don't do the microphone measuring game, that...
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    15,938

    easy to google, high level input, ...

    easy to google, high level input,

    https://www.upscaleaudio.com/pages/subwoofer-tips
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    15,938

    Makes sense, I just read that some sort of high...

    Makes sense, I just read that some sort of high level input into a sub amp, if available, can be used straight from main amp output, never saw this in action though. Wasn't sure if the BX63 could do...
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    15,938

    BX63A hookup question

    First of all I don't run my BX63A crossover for the B460 subwoofer like the manual says. I tap off a pre to amp interconnect to run signal to the BX63A. But I don't use the main out of the BX63A back...
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    Hi, I'm certainly not an expert, but the above...

    Hi, I'm certainly not an expert, but the above should be correct.

    Whatever phase/polarity deal that has to happen should take place on the crossover wiring itself.

    Just IMHO :)
  11. Replies
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    Been thru that one, if polarity is wrong on the...

    Been thru that one, if polarity is wrong on the sub, in my system, the bass just about vanishes.




    That's more than likely it, source.
  12. Replies
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    6,085

    Yea probably at this point it's preference, I...

    Yea probably at this point it's preference, I just get twitches when I read posts like, "the B460 wont work right without the BX63", etc.,

    I'm using the XLS2000, same except yours does seem to...
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    6,085

    Ah I see, subsonic protection, got that covered...

    Ah I see, subsonic protection, got that covered with another solution.

    Yes I can easily hear it switching out like that too. I guess what I meant by being able to hear the difference is, the...
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    That was a feature I must have missed, do you...

    That was a feature I must have missed, do you have more details how this works?




    Do you mean just switching out the BX63 bypass off/on, or replacing it with, say, an amp that crosses over at...
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    Hi, yes saw that, also have been looking at *a...

    Hi, yes saw that, also have been looking at *a lot* of threads here,

    trouble is, it seems that room size, placement, room treatments, and other "variables" can affect how this 25hz bump from the...
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    Hi, yea I didn't want the extra complication...

    Hi, yea I didn't want the extra complication either, but I wonder. Does the BX63 do more of a flat thing down to 25hz, or does it really create an audible (or feel-able) 6db increase in sound @ 25hz?
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    B460 - BX63/BX63A really needed?

    Currently using a crown XLS bridge mono w/ lowpass filter @88hz (sounds OK this way) for a B460 sub 2245H. Mains are L300's cut at 50hz using another crown xls (well today anyway :))

    I do have a...
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    11,362

    JBL 6260 amp bias setting

    Does anyone know a step by step procedure to check and adjust the bias on a JBL 6260? I'm not certain where exactly the test points are, I do see the bias pots though. I believe the setting should be...
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    I know this is an old thread, Wouldn't you get...

    I know this is an old thread,

    Wouldn't you get *about* the same result if you played some pink noise, medium low volume, then measure the db of the woofer (or driver that is not adjustable via...
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    IMHO, the yellow mylar caps on top and the wax...

    IMHO, the yellow mylar caps on top and the wax filled caps in the resin filled box are likely fine. There's no electrolytics in the L300 to worry about. But if you want to play, and possibly achieve...
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    I would stick with stock 300 xover design, but...

    I would stick with stock 300 xover design, but lose all the mylars and those wax filled caps in the resin box (leave em in, just unhook them), stock resistors, and use very nice caps,...
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    2,746

    Sending low HZ to SS improvements

    Hard to explain, but here I go.

    Running tube monoblocks VTA M125's (125W KT-88's) to JBL L300's (93db ported 3 ways, 15", horn, slot tweeter). Nice amps.

    I recently put a JBL B460 subwoofer...
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    Just saw your post, what I ended up using was...

    Just saw your post, what I ended up using was what the LPAD calculators show, as you say, what math calls for.

    The LPADS I had did not change much from the middle position, (let's call it 5), to...
  24. Thread: Jbl 706g-1 (l1)

    by jfine
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    13,288

    Funny you mention re-mounting, most all the pics...

    Funny you mention re-mounting, most all the pics I see of an L1, I can see that in comparison, both mine have been re-mounted 180 degrees, maybe the previous owner knew exactly what you described.
  25. Thread: Jbl 706g-1 (l1)

    by jfine
    Replies
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    13,288

    Good call, I did check that, seems OK, I can't...

    Good call, I did check that, seems OK, I can't see anywhere where it has become detached, all the way around.

    I wonder if it's just the closer tolerance on this smaller driver, I suppose the right...
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