Originally Posted by Guido
The problem soldering not affecte the problem of glue or the center tarap who deform the caps....
Why you not confidence in first hand information manufacture !!!
Of course the method of fixing caps or other sensible parts is possible in many way but cost , certified method, and respect of integrity and easy method to repair determine the best solution...
Well thanks for your interest, Ian.
The H1 is the comparison of input signal VS output signal.
Many picts of Win-Air is expose the two response curve and put a syncro signal for corrolar signal in pulse exictation.
My analyser is automatiquely integrate the function compare a-b in H1, 1/H1 H2 1/H2 AND H3 function. This expose the real response (corrected in regards at stimulation system. I hope this is easy aspect for you...
In regards of the voltage:
1--- the voltage of stimulation is arroud 4 volt AC and pass into a amplifier and keep voltage at post of the driver .
2--- so the result is not microphone but a electrical response of the blend of
driver+network. probably better approximation of response of acoustic...
For microphone: the theory presuppose the linearity system (if you exclude the saturation energy). So, very gentle exictation signal or hard signal is same response in H1, Who care is impulse or white noise... Of course many subtil detail precision according depend of type of exictation and signal but in this case it is not relevant difference.)
so my response mic is not the result of stimulate precisely 2.83 Volt driver at 1 meter. For precise curve response it is not necessary.
and it is better less influence, if you put realy near field mic (about 1 inch of front baffle mic; in regards of my technical method mesure Bruel & kjaer)
anyway: check: humidity, temperature, and pressure (bar) and tone calibration + K factor is only right method to create confidence dB response. But if you interesting, I hope to build a sensibility test for you...
For H1 any up power exicting on input X1 is correspond to same correlation of response of output system Y1 so in linear system the H1 is same anyway the level of exictation.
And I happy to explain all confuse info by bad english or many other details with you.
sincerly
Jean
Hi again Giskard,
first: Thanks for corrected schematic....
1--- I just a trace of confuse in my neophyt electronician.
You wrote : The air core of the LF and MF is big value.
but it is best way to go... so, If I decide to go in this way what is final value of core???
2--- the subtitution of other air core inductance with specific DC resistance
it is possible to keep a super air coil (goertz or Hepta-litz) and put resistance for the difference value ???
3--- the air core is the best way... and this type of core is build with no iron parts or core metal right ??
4--- because the Dc charge is (balanced caps) it is the best to match the caps in same value ??? what is tolerance in this case ???
5---
I'm realize the good improvementin LF on schematic 3145 in comparison of old 3143....
--- in case of 2121 I feeling the cut frequency is more higher ( around 1.7K) so the 2420 is more linear in this case but not shure the 2121 is perfome in this area... Right ???
6--- the # 91 post on this threard the value of resistance is not same on your recent schematic 3145 Dc charge... the HF is 3 serial resistor and in # 91 post only 1 ... what is good value for 2420 ????
thanks again so much for all...
Jean.
Here's a Solen/Mills parts list. You can substitute the Solen resistors if you wish. They run something like $0.50 instead of $3.50 (Mills).
Hang on... I caught another error...
Cutting and pasting can be hazardous!
Here's a Solen/Mills parts list along with the schematic from post 100.
You can substitute the Solen resistors if you wish.
They run something like $0.50 instead of $3.50 (Mills).
6--- the # 91 post on this threard the value of resistance is not same on your recent schematic 3145 Dc charge... the HF is 3 serial resistor and in # 91 post only 1 ... what is good value for 2420 ????
Power handling - 3x 10 W as opposed to 1x 10 W.
Note that you need to unwind those Solen coils to the correct mH value.
Hey!!! Wonderful generous jobs !!!Ok, here it is corrected for the Solen values.
I think it's all right this time.
Holler if you see any other problems.
I appreciate extremely !!! thanks thanks and thanks again...
=============================================
more specific questions for you now....
1--- For UHF section
a--- what is " .10mH + 9V " in uhf section ????
b--- Because I'm a 2405 (16 ohms) and the DCR is 8 ohms and the 2405H
is 4 ohms DCR Right??
it is necessary to modifie circuit in according impedance change ???
2--- For LF section
a--- the 5.4 mH air coil is .63 Ohms....
but I found a air core of .30 Ohms...
It is a better but the difference in ohms it is problem ???
It is necessary to compensate by a resistance in serial ???
b--- Heuu.... Giskard it is possible to other cut and paste error:
In your second listing parts you match 33 mfd and 51 mfd for
according of not 2 X 40 Mfd is not available on solen but this caps
is obligation to match value in opposite (according to DC Charge) ???
3--- For MF section
a--- You write put down mH in coil for 2121 => 1.8 to 1.7 but It is necessary to adap the 2420 too
4--- For HF section (according to modification) :
a--- 3 resistance in parralle in 62 ohms but one of .42 Ohms in serial with
.68 mH ?? It is value of coil resistance or it really other resistance
for compensation of transfo coil???
b--- the number of wire in coil transfo is not same to real good air core,
so the time delay it is affected by the short coil VS transfo coil ???
5--- The PB is polypropylene caps 400V...
it is better to build with a bypass at low value in paper and foil ???
( I know is realy higher price but I dont care at this state...)
I hope is not too crazy question and it is more clarification of this topic...
jean
1--- For UHF section
a--- what is " .10mH + 9V " in uhf section ????
A cut and paste vestige - I fixed it.
b--- Because I'm a 2405 (16 ohms) and the DCR is 8 ohms and the 2405H
is 4 ohms DCR Right??
it is necessary to modifie circuit in according impedance change ???
No. All 077's, 2405's and 2405H's are 10 ohm transducers regardless of what is stamped on the foilcal.
2--- For LF section
a--- the 5.4 mH air coil is .63 Ohms....
but I found a air core of .30 Ohms...
It is a better but the difference in ohms it is problem ???
No. Use the 0.30 ohm 5.4 mH coil.
It is necessary to compensate by a resistance in serial ???
No.
b--- Heuu.... Giskard it is possible to other cut and paste error:
In your second listing parts you match 33 mfd and 51 mfd for
according of not 2 X 40 Mfd is not available on solen but this caps
is obligation to match value in opposite (according to DC Charge) ???
The 33 uF and 51 uF in series are closer to 20 uF than the two 39 uF.
Use whichever you want.
3--- For MF section
a--- You write put down mH in coil for 2121 => 1.8 to 1.7 but It is necessary to adap the 2420 too
I'm not going to modify the 3144/3145 circuit for a 2121. It has undesireable breakup modes and I would never use it. Recone a 2121 as a 2122.
4--- For HF section (according to modification) :
a--- 3 resistance in parralle in 62 ohms but one of .42 Ohms in serial with
.68 mH ?? It is value of coil resistance or it really other resistance
for compensation of transfo coil???
5--- The PB is polypropylene caps 400V...
it is better to build with a bypass at low value in paper and foil ???
( I know is realy higher price but I dont care at this state...)
I don't understand what you are trying to tell me.
ahhhh the difficulty the learn other language... sorry, I try again...
But just before, Manys thanks for precise responses...
-------------------
In question 4 ( i attache pict for more explicite question)
What is best circuit for HF ??? ( 2420 ) This two schema appear OK but different...
--------------------
For question 5 what is best approach for maximise the ideal response caps.
it is better to mix a caps in parralle for erase signature caps in according of many debate on threads???
ex: 1 X 160 uF polypropylene + .o1uF (film and foil) in parrallele for kill signature...
--------------------
And for the end what is your highest experience in regards of internal cable network and link for driver???
--------------------
P.S. I'm really exicting to buidl this network...
I sending a couple of pict of works and final construction...
In question 4 ( i attache pict for more explicite question)
What is best circuit for HF ??? ( 2420 ) This two schema appear OK but different...
Ok, don't worry about the 2420. It will work in the new schematic.
For question 5 what is best approach for maximise the ideal response caps.
it is better to mix a caps in parralle for erase signature caps in according of many debate on threads???
ex: 1 X 160 uF polypropylene + .o1uF (film and foil) in parrallele for kill signature...
You might wish to try the Solen caps without bypass caps. If they sound too harsh with the JBL compression drivers try 0.01 uF polystyrene film & foil bypass caps. 0.01 uF polypropylene film & foils would be second choice. The bypass caps can be added at any time. Remember they have to be biased too so put each one right in parallel with it's main cap.
And for the end what is your highest experience in regards of internal cable network and link for driver???
I've been using 15 AWG Monster cable from the JBL Ti Series for the last 20 years. It works just fine. Ask someone else what they prefer.
Hi again Giskard.
thanks for info again
Again a stupid question by neophyt electronic guys....
I just remarks is same difference in UHF scetion in schematic 3.3 uF and 3.9 uF (in original plan is 1,5+,01 Uf)
Please just confirm the value ???
By the way, wilson run with powerline car by monsterCable for internal wiring... Well many serious cie is found pleasant Monster product...
Jean.
I'm not going to modify the 3144/3145 circuit for a 2121. It has undesireable breakup modes and I would never use it.
Euh What is the problem with this driver ???? or the cone 2121...
You tilt my curiousity:
I just finish test of sensitivity and run 90,5 dB at 1 meter.
The response in pink noise in 314 Hz to close 4 KHz ... Of course it is not a fresh technologie but I have confidence to work with new schematic no???
The resonnance is 96 Hz ...
thanks for comments.
"I just remarks is same difference in UHF scetion in schematic 3.3 uF and 3.9 uF (in original plan is 1,5+,01 Uf)
Please just confirm the value ???"
The actual value is 1.8 uF, so 3.3 uF and 3.9 uF in series equals 1.7875 uF.
Try your 2121's then and see if you like them, if you do then you're good to go.
Hi again Giskard,
Euh.... Another stupid question...
It is not important to build a symetrical value ???
------------------
please explain little bit what is "" undesireable breakup modes"" of 2121 cone for help me who put finger in the problem...
------------------
Thanks for yout time and effort...
jean.
No, it isn't necessary to build a symetrical value.
The problem was fixed with the 2122H. The old inverted paper domes of the LE10, 2121, 2105, LE5-2, etc were fine for their times.
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