hi,
unfortunately a scheme of factory doesn't exist , first clem_o then me we have drawn the scheme reading the pcb.
this is a very simple operation when there are few component.
unfortunately the crossover of 105/3 is very complex, and he has been very difficult to draw the scheme .
I have found some differences between my scheme and that of clem_o .
As already says, because the crossover is different from sample sample, to contain the resonance of the tw with a trap notch .
nevertheless my true problem is that I don't find the phase among the section low and that mid-high .
Does they go to opposite phase among them, but with the section low positive or section mid-high positive?
would like us a manual service of factory.
unfortunately a scheme of factory doesn't exist , first clem_o then me we have drawn the scheme reading the pcb.
this is a very simple operation when there are few component.
unfortunately the crossover of 105/3 is very complex, and he has been very difficult to draw the scheme .
I have found some differences between my scheme and that of clem_o .
As already says, because the crossover is different from sample sample, to contain the resonance of the tw with a trap notch .
nevertheless my true problem is that I don't find the phase among the section low and that mid-high .
Does they go to opposite phase among them, but with the section low positive or section mid-high positive?
would like us a manual service of factory.
Hi,
sandor626, what impedance (8 or 5 ohms) are your 8" woofers (KEF B200) or the specification number/model. They should be connected parallel as the xover, isn't it? If you have the same colours (red/black/gray/orange) you can connect these cables. In the mean time I am only checking this LF xover unit. I will get back later (days, because I will check one by one/and I have exams to the end of the month) after I checked the HF unit. Do you have red/black wires connected to the top woofer?
Your problem is between the mid-bass/uni-Q or in the uni-Q/treble unit?
sandor626, what impedance (8 or 5 ohms) are your 8" woofers (KEF B200) or the specification number/model. They should be connected parallel as the xover, isn't it? If you have the same colours (red/black/gray/orange) you can connect these cables. In the mean time I am only checking this LF xover unit. I will get back later (days, because I will check one by one/and I have exams to the end of the month) after I checked the HF unit. Do you have red/black wires connected to the top woofer?
Your problem is between the mid-bass/uni-Q or in the uni-Q/treble unit?
Hello Inductor,
that was the scheme of clem_o .
My crossover is different . My scheme that I send you however must have checked.
The value of the condensers is checked, that of some resistances is different, that of the inductances is not sure (I have to check her).
LL = LOW LOSS condenser
LOW-MID is connected for red + and black - wires.
Mid ( uni-q ) is connected for green + and yellow -
tweeter ( uni_q) is connected blue + and brown -
The polarity is reported to the drivers of loudspeaker.
however I have to open the loudspeaker and to check everything.
In every case it seems that the woofers and the low-mid have to
go to opposite phase ( also for acoustic test ).
that was the scheme of clem_o .
My crossover is different . My scheme that I send you however must have checked.
The value of the condensers is checked, that of some resistances is different, that of the inductances is not sure (I have to check her).
LL = LOW LOSS condenser
LOW-MID is connected for red + and black - wires.
Mid ( uni-q ) is connected for green + and yellow -
tweeter ( uni_q) is connected blue + and brown -
The polarity is reported to the drivers of loudspeaker.
however I have to open the loudspeaker and to check everything.
In every case it seems that the woofers and the low-mid have to
go to opposite phase ( also for acoustic test ).
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sandor626 said:
No.
Same phase, at least with what concerns the xover.
Anyway your xover does not look like a good "piece of equipment". It is wrong somehow. Ask for the original schematics from Kef or here:
http://www.hifiloudspeakers.info/speakertalk/
Are your Low-Mid Drivers connected in series or parallel? Are they 8 Ohms or different? Do you have their references and specs?
Hello,
Inductor, this is the problem !
I have not received answered by KEF, neither from HIFILOUDSPEAKER FORUM.
I can found only on my crossover and on my acoustic judgment.
The mid-low are in parallel , they are 8 ohm, naturally, being the loudspeaker from 4 ohm.
Soon I have to study the crossover HF and I will send you other photos. hi
Inductor, this is the problem !
I have not received answered by KEF, neither from HIFILOUDSPEAKER FORUM.
I can found only on my crossover and on my acoustic judgment.
The mid-low are in parallel , they are 8 ohm, naturally, being the loudspeaker from 4 ohm.
Soon I have to study the crossover HF and I will send you other photos. hi
kef 105-3 phase-woofer&low.mid driver
Ok, this is good for a start.
Post spec or references the like, SP_xxxx and Bxxx (like the B200 8"woofer). If you, by the way, know where to find the specs for the speakers (webaddresses) like the UNI-Q and the others, just keep posting here if they are from your 105/3.
Do you know what references they are for the tweeter on the UNI-Q driver?
(note: please also direct me to the question you posted in that forum if you can, or the date so that I can check.)
Ok, this is good for a start.
Post spec or references the like, SP_xxxx and Bxxx (like the B200 8"woofer). If you, by the way, know where to find the specs for the speakers (webaddresses) like the UNI-Q and the others, just keep posting here if they are from your 105/3.
Do you know what references they are for the tweeter on the UNI-Q driver?
(note: please also direct me to the question you posted in that forum if you can, or the date so that I can check.)
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