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  1. Thread: 305P MkII

    by grumpy
    Replies
    10
    Views
    986

    Nice!... yeah deeper bass would probably just...

    Nice!... yeah deeper bass would probably just muddy the waters (so to speak) re monitor usage, and make for a much bigger box and/or amp.
    I was looking at the intermediate 306 version, but these...
  2. Thread: 305P MkII

    by grumpy
    Replies
    10
    Views
    986

    So yes, it breaks into the high 20s low 30s re...

    So yes, it breaks into the high 20s low 30s re usability.
    Drops like a rock below that (expected).
    (pink noise -> iPhone AudioTools LF-range FFT average)

    Could eke out a bit more bass in a...
  3. Thread: 305P MkII

    by grumpy
    Replies
    10
    Views
    986

    Let me give it a more serious run through with...

    Let me give it a more serious run through with appropriate source material and get back.
    Itís caused a few surprising room rattles, but no real measurements yet.
  4. Thread: 305P MkII

    by grumpy
    Replies
    10
    Views
    986

    Caught a pair of the 8" version on crazy sale and...

    Caught a pair of the 8" version on crazy sale and free shipping at BHphoto with the sub (helps).
    (sale was -very- brief)

    Using as nearfields on stands driven by an old firewire MOTU Traveler...
  5. Other than adding a pair of terminals and...

    Other than adding a pair of terminals and clipping one connection (ok, two connections to prevent blue-smoke-type boo-boos), I'm not seeing this (passive bi-wiring 'mod') as being particularly...
  6. Replies
    55
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    2,229

    Hey!... :D poopers gonna poop.

    Hey!... :D

    poopers gonna poop.
  7. Replies
    74
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    43,197

    Might also look into the later-implemented use of...

    Might also look into the later-implemented use of a diode to rectify the audio signal, thus providing the bias voltage with no need for a battery.
    :cheers:
  8. Replies
    6
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    241

    allowing a mix of driver impedances (a) also...

    allowing a mix of driver impedances

    (a) also switches in/out the 2nd lpf cap to stay in sync with the inductor :) (keeping the 12dB/oct section crossover frequency the same for the alternate...
  9. Thread: Sub18

    by grumpy
    Replies
    28
    Views
    3,375

    :eek: :applaud:

    :eek:

    :applaud:
  10. Replies
    7
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    532

    Many of the parameters are interdependent. If...

    Many of the parameters are interdependent.

    If you want to know about accounting for box volume, RMC pointed you in the right direction.
    ... something like the volume of a cone plus the magnet...
  11. Replies
    8
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    702

    My experience? Workmanship is excellent....

    My experience? Workmanship is excellent. Sometimes it takes awhile. Not sure this is a primary gig anymore.
    I expect you'll be pleased with the end result, if not the wait.
  12. Replies
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    532

    -If- the question is re Vd, then itís Sd * Xmax,...

    -If- the question is re Vd, then itís Sd * Xmax, but the intended question may have been answered.
  13. Replies
    160
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    14,542

    I think the answers may lie between room gain and...

    I think the answers may lie between room gain and banana curve discussions.
  14. Replies
    2
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    791

    Haven't directly compared, but I have heard the...

    Haven't directly compared, but I have heard the 1200Fe under a JBL vert horn. It was quite engaging...
  15. Thread: Sub18

    by grumpy
    Replies
    28
    Views
    3,375

    I realize not everyone has suffered from the...

    I realize not everyone has suffered from the decades-long Sit-and-Sleep advert/commercial barrage...
    but “You’re killing me Barry!” :D
  16. Replies
    2
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    638

    Hi Todd, Karlson boxes look kind of cool and...

    Hi Todd,

    Karlson boxes look kind of cool and are fun to contemplate, and certainly have an effect.

    I'll speculate that at 30Hz to 300Hz a triangle cut out would be fairly equivalent... or a...
  17. Replies
    8
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    1,318

    Visual differentiaion? Horn a smidgen closer to...

    Visual differentiaion? Horn a smidgen closer to the top woofer? Worked -way- better than 180ļ around either other major axis.
  18. Replies
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    2,383

    Perhaps a unit with training wheels (clipping...

    Perhaps a unit with training wheels (clipping indicators), or better yet, suggest going biamp so the bass amp (overdriven or not) can’t wreak havoc on the more sensitive drivers... use the integrated...
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    2,383

    -very- loud bass -might- let you remain in the...

    -very- loud bass -might- let you remain in the room with 300w peaks, but it would be uncomfortable unless outside or in a very large room. So, I would not see 150w as a real-life L300 limitation....
  20. Thread: JBL Paragon

    by grumpy
    Replies
    1
    Views
    891

    Condolences and congratulations. Perhaps a...

    Condolences and congratulations.

    Perhaps a Mcintosh 2x05 type amplifier and an accompanying pre would suit the mood/period (?)

    Modern gear is certainly suitable as well, but somehow wouldn't...
  21. Replies
    3
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    1,350

    -opinion- Not where I'd personally go for a...

    -opinion-

    Not where I'd personally go for a daily listener (14" woofer crossing over to a small paper tweeter is bound to have its limitations),
    but they are old with fewer and fewer of them in...
  22. Replies
    73
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    9,938

    "...but this voltage needs to be higher than any...

    "...but this voltage needs to be higher than any expected signal peak voltage."

    I challenge this repeated assumption. I suggest the bias voltage only needs to be sufficient to mitigate low level...
  23. Replies
    6
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    1,495

    If you just pick the correct two terminals on an...

    If you just pick the correct two terminals on an 8ohm L-pad, you'll have a variable resistor (low ohms to ~40ohms)
  24. Replies
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    12,219

    Xmax for 128H is only 1/3" ... 2" is right out. ...

    Xmax for 128H is only 1/3" ... 2" is right out.

    I would guess 1) simply expecting too much and over driving the system or 2) the box tuning (passive radiator in this case... seems there was a...
  25. Replies
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    3,074

    If it's already tuned to be ~30Hz (say 5-6ft3...

    If it's already tuned to be ~30Hz (say 5-6ft3 vol, 4" long x 4" diameter port), I'd just start with it as-is (running through some scenarios).

    I would expect that to be fairly close to neutral (no...
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