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  1. Nice method! I call my test the dribble test,...

    Nice method! I call my test the dribble test, with some power the driver won't stay put at Fs.:D
  2. The only way to measure T&S accurate on drivers...

    The only way to measure T&S accurate on drivers with a low FS is the added volume method. With added mass you will reach the limits of the measurement setup ( soundcard). We know that the provided...
  3. Do not block the vent, fooled me in the past with...

    Do not block the vent, fooled me in the past with a 2235...
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    http://www.google.nl/url?sa=t&rct=j&q=&esrc=s&sour...

    http://www.google.nl/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjPgfWkxKHLAhWEWxQKHWT1DrIQFggcMAA&url=http%3A%2F%2Fwww.hypex.nl%2Fdocs%2Fpapers%2FThe%2520G%2520Word.pdf&usg=AFQjCNGBN6op0GTAMD...
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    Do we need more proof????

    Do we need more proof????
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    I don't have the filter, but it is impossible...

    I don't have the filter, but it is impossible according to the size it is a 33uF cap. And if I remember correctly it was mentioned in the documentation from JBL somewhere, the filter was one pole of...
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    C2= 3,3 uF. 33uF /250V is a very, very, very big...

    C2= 3,3 uF. 33uF /250V is a very, very, very big capacitor.....( in size).
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    From Voice coil magazine januari 2012: BMS was...

    From Voice coil magazine januari 2012:

    BMS was founded in 1994 in Hanover, Germany. In a relatively short time (short time when compared to JBL that was founded in 1946), it has developed a...
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    Coda=BMS Patent: US 9,008,343 B2

    Coda=BMS

    Patent:



    US 9,008,343 B2
  10. Replies
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    BMS factory is in Sofia, warehousing in Hannover.

    BMS factory is in Sofia, warehousing in Hannover.
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    I have this information from the owner of a...

    I have this information from the owner of a leading class D amplifier brand, who has very close contacts with the owner of BMS and did a factory visit in Sofia recently.
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    From very reliable sources I have been informed...

    From very reliable sources I have been informed that the D2430 driver is produced by BMS.......
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    Poetin....

    Poetin....
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    Update???

    Update???
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    If this was a problem we should have noticed it...

    If this was a problem we should have noticed it with our stage monitors. A 2 or 3db drop in output level is very noticable, certainly if you have two side by side with one E140 and the other with a...
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    I think this an over exaggerated issue. I have...

    I think this an over exaggerated issue.

    I have been working in the PA business all my life and had aprox 150 K140/E140 and 100 K120/E120 drivers in our systems. First driven by Crown DC300 and...
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    :eek::eek::eek:

    :eek::eek::eek:
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    Paul I do own a Citroen DS23ie Pallas.:D I...

    Paul I do own a Citroen DS23ie Pallas.:D


    I have been working in the pro audioscene as a sound engineer from 1985, mainly with JBL powered speakers.

    My current home setup is a two active...
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    [QUOTE=Vahe Sahakian;355641] Checked the...

    Checked the picture several times this day, because something is wrong......

    Now I know....:D

    All the leads to the voice coils are pointing upwards..... :blink:
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    Same label, so it is a PD-801!

    Same label, so it is a PD-801!
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    If you look at the small label on the side you...

    If you look at the small label on the side you can see the old pioneer logo and PD-005A.

    Maybe this is a very early driver.
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    Pioneer=TAD ...

    Pioneer=TAD

    http://pioneerproaudio.com/en/ourstory.html

    Maybe a pre 1978 driver?
  23. Easy method to test the flux of a alnico driver

    I was just thinking of a easy method to check the flux....

    The Fs of a speaker is related to the strenght of the flux field. A simple example: If you put a 2235 recone in a E140 basket, the Fs...
  24. Thread: 2225H Recone

    by ds23man
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    I use these: ...

    I use these:

    http://www.dentsply.com.au/endodontic-accessories/clean-stand-endo-twin-bloc-refill-sponges-large-a2/w1/i1006084_1001391/

    My wife is a dentist, so large quantities always...
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    Oh my god........ :barf:

    Oh my god........

    :barf:
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