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Nice method! I call my test the dribble test, with some power the driver won't stay put at Fs.:D

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...

Do not block the vent, fooled me in the past with a 2235...

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...

Do we need more proof????

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...

C2= 3,3 uF. 33uF /250V is a very, very, very big capacitor.....( in size).

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...

Coda=BMS

Patent:



US 9,008,343 B2

BMS factory is in Sofia, warehousing in Hannover.

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.

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

Poetin....

Update???

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...

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...

:eek::eek::eek:

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...

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:

Same label, so it is a PD-801!

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.

Pioneer=TAD

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

Maybe a pre 1978 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...

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...

Oh my god........

:barf: