Hello,
Help needed with expertise in capacitors.
I acquired recently a few soviets made capacitors, various models. They are mostly 0.1uF, 0.25uF, Mica’s are 5000pF. Various voltages as well.
K42Y-2 /- metalized paper in oil, green painted body
KBG-MP /КБГ-МП-sealed oil impregnated paper capacitor
KSG-1 /КСГ-1-Г-silver mica
KSOT-5-G /КСОТ-5-Г-silver mica
MBGC-1 /МБГЦ- high impulse metalized paper in oil
MBGCH-1 /МБГЧ-1--oil impregnated metallized paper
MBM /МБМ - oil impregnated paper
On the pic, capacitors are in order as per the list.
Would there be any use of them in a speaker crossovers?
Based on the available values, I could not think of any application, but as bypass capacitors? But, are PIO any good for bypass?
Are there any specifics the way the different soviet’s capacitors go along with MKT, MKP, electrolytics?
I plan to do tests, break down capacitors and else would be extensive time consuming task.
If you could help me please, to narrow my choices for capacitors of the list bypassing Jentzen, Audyn, Solen, and variety of electrolytics.
Most of the speakers are 2-way, some 3-way.
Much appreciated.
Thx
Help needed with expertise in capacitors.
I acquired recently a few soviets made capacitors, various models. They are mostly 0.1uF, 0.25uF, Mica’s are 5000pF. Various voltages as well.
K42Y-2 /- metalized paper in oil, green painted body
KBG-MP /КБГ-МП-sealed oil impregnated paper capacitor
KSG-1 /КСГ-1-Г-silver mica
KSOT-5-G /КСОТ-5-Г-silver mica
MBGC-1 /МБГЦ- high impulse metalized paper in oil
MBGCH-1 /МБГЧ-1--oil impregnated metallized paper
MBM /МБМ - oil impregnated paper
On the pic, capacitors are in order as per the list.
Would there be any use of them in a speaker crossovers?
Based on the available values, I could not think of any application, but as bypass capacitors? But, are PIO any good for bypass?
Are there any specifics the way the different soviet’s capacitors go along with MKT, MKP, electrolytics?
I plan to do tests, break down capacitors and else would be extensive time consuming task.
If you could help me please, to narrow my choices for capacitors of the list bypassing Jentzen, Audyn, Solen, and variety of electrolytics.
Most of the speakers are 2-way, some 3-way.
Much appreciated.
Thx
Attachments
Greets!
Historically, Paper In Oil is best and the ones in my XOs from 1964 still sound fine with no leaks: http://web.archive.org/web/20031003054711/http://members.aol.com/sbench102/caps.html
Historically, Paper In Oil is best and the ones in my XOs from 1964 still sound fine with no leaks: http://web.archive.org/web/20031003054711/http://members.aol.com/sbench102/caps.html
Hi,
some relatives from my experience
-going below 0.1uF is useless and at the opposit counterproductiv for bypassing in a loudspeaker filter.
-the bypassing doesn't enhance a bad main cap whatever it is lythic or film cap.
-bypassing is usefull if you have a capacitance tool too measure and/or to match the two loudspeakers filters
-bypassing is usefull on the values sometimes up to 0.1 uF according the area and slope of the filter, one can hear a difference (and in shunt position as well)
-bypassing according the dielectric is often to compensate tones according the rest of your setup and own taste and patern of radiating/room interaction all together.
-There is no absolute ranking : one usefulll here can be wrong elswhere
-yoi can not avoid the trial and errors and long repeated tests to to do so, be prepared to be patient.
- the setup may need to be changed if not for the capacitance value decoupling but for the tones if you change one device in your setup like a source for illustration.
First rule : choose the good capacitor for the main value, then only make the final coocking with the small values if needed. A lythic can do as a cheap MKT... or not : it is very relatice to your setup, and sometimes a MKT is not a bad choice. If you can find NOS MKC, that's a good choice of dielectric too. Paper is good but expensive cause a niche market. Can do or not again relatice to your setup.
Coils and resistors in the mid and trebles are important too but less. MOX better than classic cement, but a cement mmigth be just what you need sometimmes (again trial & error checking)
You opened a can of worms here, be ready to an intifada !
Last and more important rule : you can NOT fix a bad design filter / loudspeaker by caps rolling.
cheers
some relatives from my experience
-going below 0.1uF is useless and at the opposit counterproductiv for bypassing in a loudspeaker filter.
-the bypassing doesn't enhance a bad main cap whatever it is lythic or film cap.
-bypassing is usefull if you have a capacitance tool too measure and/or to match the two loudspeakers filters
-bypassing is usefull on the values sometimes up to 0.1 uF according the area and slope of the filter, one can hear a difference (and in shunt position as well)
-bypassing according the dielectric is often to compensate tones according the rest of your setup and own taste and patern of radiating/room interaction all together.
-There is no absolute ranking : one usefulll here can be wrong elswhere
-yoi can not avoid the trial and errors and long repeated tests to to do so, be prepared to be patient.
- the setup may need to be changed if not for the capacitance value decoupling but for the tones if you change one device in your setup like a source for illustration.
First rule : choose the good capacitor for the main value, then only make the final coocking with the small values if needed. A lythic can do as a cheap MKT... or not : it is very relatice to your setup, and sometimes a MKT is not a bad choice. If you can find NOS MKC, that's a good choice of dielectric too. Paper is good but expensive cause a niche market. Can do or not again relatice to your setup.
Coils and resistors in the mid and trebles are important too but less. MOX better than classic cement, but a cement mmigth be just what you need sometimmes (again trial & error checking)
You opened a can of worms here, be ready to an intifada !
Last and more important rule : you can NOT fix a bad design filter / loudspeaker by caps rolling.
cheers