As mention you should try Shidengen rectifier Pashka.
Do note caps do need some burn in, some a couple of hours some takes much longer. Never judge the sound when caps are fresh. Sound will change as they settle in. Perhaps you should take a step back focus on the XO first as this affects the sound that is send to each amp. Once settled then you move on to tweak the amp itself.
Do note caps do need some burn in, some a couple of hours some takes much longer. Never judge the sound when caps are fresh. Sound will change as they settle in. Perhaps you should take a step back focus on the XO first as this affects the sound that is send to each amp. Once settled then you move on to tweak the amp itself.
sumotan I dont know what voltage and which one Shidengen bridge is ok for my 2 different AC outputs amps . One got AC48v other for HF amps AC 33v .
I recap gradually, the sound changed sometimes without special difference. I agree hurried with assessment of capacitors , but I needed to change the trimmer resistors, it also had to influence sounding as resistors were black oxidized.
So far wrote about sound problems after recap for a forum as everything began to sound badly and cheap and as how was good sounding before, during this time the sound changed to not recognition, returned. Just miracles. But about the beginning I will describe what was with my panic thoughts.
now sound much, much better then before recap .
Bass perfect ,much much better then before , vocals all instruments massive , full body , more details , more clear sound . Drams all natural . I can't see any not real sounding artifacts . More accents . more natural . More filling reality . And this changes becomes just right now .
Look like you right sumotan . On high frequency KZ look like not realistic . Very thin sound on percussions, clicks as a watch at a small loudness .
I recap gradually, the sound changed sometimes without special difference. I agree hurried with assessment of capacitors , but I needed to change the trimmer resistors, it also had to influence sounding as resistors were black oxidized.
So far wrote about sound problems after recap for a forum as everything began to sound badly and cheap and as how was good sounding before, during this time the sound changed to not recognition, returned. Just miracles. But about the beginning I will describe what was with my panic thoughts.
now sound much, much better then before recap .
Bass perfect ,much much better then before , vocals all instruments massive , full body , more details , more clear sound . Drams all natural . I can't see any not real sounding artifacts . More accents . more natural . More filling reality . And this changes becomes just right now .
Look like you right sumotan . On high frequency KZ look like not realistic . Very thin sound on percussions, clicks as a watch at a small loudness .
I tried a lot of speakers , most of them vintage. The modern style a sound did not strike me, too much compression sound, synthetic and not realistic. ( for me) I do not listen to frequency characteristic and price not point . I need realistic sound and on it my choice was directed to vintage acoustics. Try a lot . The majority big problem of many speakers is not reproduced low bass , big problem on a lot of speakers . One day I was lucky and got chance and I became the owner of active speakers Braun LV 1020 . ( not a lot of info around) That it is pleasant to me in this system of Braun that can play any sound in any genre of execution from the lowest frequencies and with huge division of instruments with super natural sounding, with air , openly, and of course a full-fledged bass with the natural realistiny low register. After 2 years i try receive the maximum sound from this active speakers . My first idea was to change the transformer for more powerful and to give the separate power on each amplifier. Also to replace capacitors, resistors and some alterations about which I so far also do not know now 
, consists to achieve the maximum natural sounding .
My story that was after replacement of condensers:
I changed capacitors gradually on one channel. About the beginning in the power supply put capacitor 560 series from EPCOS TDK, these are leaders in a sound and characteristics. The sound did not change, I tried to hear improvements and especially did not hear a difference, the sound was best before and after and I did not grudge the spent money on this capacitors and I went further.
Panic began after replacement of capacitors in the crossover and the power amplifier and trimmer resistors .
What was changed:
On each xrossover and amps for different frequency I mix Silmic II with Nichekon KZ . Drove week and gradually added new capacitors on the second amplifier. I was in confusion, the sound became sluggish, flat, began to remind me like any HI FI more, boring sounding what realness, no dynamic, rather as at many stereo systems which on a miscellaneous badly play.
Here I began to panic and thought that Silmic does a sound sluggish, like tube amps so what I don't like it.
The last two days was the most panic, I wrote at a forum about Silmic II , rendered a public verdict . On the mid frequency crossover and the amplifier I replays silmic for KZ everywhere. The sound did not change. Everything sounded nasty, poor , instruments were small, there was no dynamics what was, the sound was like the cheap stereo system. Tried to look for an equalizer of a problem and to adjust fullness of sound what was impossible. This morning before running away from the house starts activate some loud very soft Bass . Bass was soft , chip , just like bass or LF not part of music and everything sounded small without body. Tonight groped a failure in the area on 300 Hz, I added an equalizer 9 dB having created the huge hill, crazy . For half of hour there were changes, I reduced each 5 minutes a hump on an equalizer and a result returned everything to 0. EQ finally was off , Everything returned. Bass becomes to sound bass guitar and drums , voice return all realistic sound with many what was lost is coming back .
That as a result that changed. Replacement the trimmer resistors and capacitors add to my sound and corrected the low-frequency register, earlier it was less bass with defect a big hump on 150 hertz. Took a lot of time me to correct an equalizer and to bring a sound to an ideal. These speakers have big abilities and with a sound it is possible to do everything that you want, so I also arrived before replacement of capacitors and was happy.
While I am happy, is more true happy the last 4 hours.
Next step improve sound: Metal Film Resistors and bridge and of I w'll try more capacitors on HF crossover and amps .
Two pictures .
PS capacitors before and after .
Crossover board before recaps , you can see how bad trimmer resistors, and 10uf capacitors what was replays . Right now on very low volume music sounding best , and Yes percussion HF not is good , to small on low volume . Need get right one capacitors. Right now I have on HF amp silmic, KZ and Pana FC .
QUESTION:
Can I replace 10uf polar Aluminum Electrolytic capacitors for example with film MKS2 ??? On picture I marked in the pink color this caps , all these capacitors on signal twist polarity minus to a signal entrance. IS this coupling capacitors , can I replays with film not polar ?
2. Green fields showed crossovers. DO I need change resistors which are shown blue color with Metal Film or they do not influence a sound???
Thanks
, consists to achieve the maximum natural sounding . My story that was after replacement of condensers:
I changed capacitors gradually on one channel. About the beginning in the power supply put capacitor 560 series from EPCOS TDK, these are leaders in a sound and characteristics. The sound did not change, I tried to hear improvements and especially did not hear a difference, the sound was best before and after and I did not grudge the spent money on this capacitors and I went further.
Panic began after replacement of capacitors in the crossover and the power amplifier and trimmer resistors .
What was changed:
On each xrossover and amps for different frequency I mix Silmic II with Nichekon KZ . Drove week and gradually added new capacitors on the second amplifier. I was in confusion, the sound became sluggish, flat, began to remind me like any HI FI more, boring sounding what realness, no dynamic, rather as at many stereo systems which on a miscellaneous badly play.
Here I began to panic and thought that Silmic does a sound sluggish, like tube amps so what I don't like it.
The last two days was the most panic, I wrote at a forum about Silmic II , rendered a public verdict .
On the mid frequency crossover and the amplifier I replays silmic for KZ everywhere. The sound did not change. Everything sounded nasty, poor , instruments were small, there was no dynamics what was, the sound was like the cheap stereo system. Tried to look for an equalizer of a problem and to adjust fullness of sound what was impossible. This morning before running away from the house starts activate some loud very soft Bass . Bass was soft , chip , just like bass or LF not part of music and everything sounded small without body. Tonight groped a failure in the area on 300 Hz, I added an equalizer 9 dB having created the huge hill, crazy . For half of hour there were changes, I reduced each 5 minutes a hump on an equalizer and a result returned everything to 0. EQ finally was off , Everything returned. Bass becomes to sound bass guitar and drums , voice return all realistic sound with many what was lost is coming back . That as a result that changed. Replacement the trimmer resistors and capacitors add to my sound and corrected the low-frequency register, earlier it was less bass with defect a big hump on 150 hertz. Took a lot of time me to correct an equalizer and to bring a sound to an ideal. These speakers have big abilities and with a sound it is possible to do everything that you want, so I also arrived before replacement of capacitors and was happy.
While I am happy, is more true happy the last 4 hours.
Next step improve sound: Metal Film Resistors and bridge and of I w'll try more capacitors on HF crossover and amps .
Two pictures .
PS capacitors before and after .
Crossover board before recaps , you can see how bad trimmer resistors, and 10uf capacitors what was replays . Right now on very low volume music sounding best , and Yes percussion HF not is good , to small on low volume . Need get right one capacitors. Right now I have on HF amp silmic, KZ and Pana FC .
QUESTION:
Can I replace 10uf polar Aluminum Electrolytic capacitors for example with film MKS2 ??? On picture I marked in the pink color this caps , all these capacitors on signal twist polarity minus to a signal entrance. IS this coupling capacitors , can I replays with film not polar ?
2. Green fields showed crossovers. DO I need change resistors which are shown blue color with Metal Film or they do not influence a sound???
Thanks
Attachments
From the beginning you were told to replace the COUPLING electrolitycs with mks2(or other plastic mkt), mkp are way too large ..... , and now you are asking if is ok? even if you use audio electrolitycs(polarized or not) is still very good. But if you expect miracles to happen just because you replaced some caps you are on the wrong track. It is like having an old Kia and you buy the best tires you expect the car to feel like a new Porsche...
Thanks asuslover.
I made as told replaced the coupling capacitors with MKS2 like on schematic . I considered that couplings it is only those capacitors which stand between the crossover and the amplifier and also the beginning of the crossover. Whether the question consisted the condensers marked on the schematic in pink color is it also coupling capacitors ?
I made as told replaced the coupling capacitors with MKS2 like on schematic . I considered that couplings it is only those capacitors which stand between the crossover and the amplifier and also the beginning of the crossover. Whether the question consisted the condensers marked on the schematic in pink color is it also coupling capacitors ?
It is nice the your mucking around to learn & pick up the spirit of diy Pashka.
Like I said, your getting way ahead with too many mods at one go. I would leave the ampliifier part alone & focus on the XO first as this will affect the sound that goes into the amplifiers. It is only when you think that it sounds good to you then you move onto the amplifier tweaks. This is the best way that I can advice you cause if you muck around with everything it will end up a merry go round & you’ll be chasing at the tail of what went wrong.
Like I said, your getting way ahead with too many mods at one go. I would leave the ampliifier part alone & focus on the XO first as this will affect the sound that goes into the amplifiers. It is only when you think that it sounds good to you then you move onto the amplifier tweaks. This is the best way that I can advice you cause if you muck around with everything it will end up a merry go round & you’ll be chasing at the tail of what went wrong.
I agree with you. I hurried. I can back up step by step . I try understand which parts change sound and how . Befor recap it necessary was to change trimming resistors, they were oxidized. (output on XO LF and MF) Yes sounded very well earlier, but with adjusted with FabFilter Pro Q-2 a professional equalizer...., and I made the minimum correction of a sound. The big changes on 5 dB down around 100-190 hertz was also adjusted by a lower Fq, for best natural sound . After recap the problem 150hz almost left.
I was concerned by a hump of 150 hertz and rise at low frequencies was necessary to make real sound . Speakers can play very low without problem . So far too early speak to me it seems that KZ gives a soft bass, and does not go low, plus Vocals are thin sounding and do not have much body on many instruments .
Now I want to understand how to balance XO and the amplifier. Changing adjusting XO output the trimmer resistor the output resistance which affects frequency characteristic not only between crossovers but also on this XO frequency . I do not know yet how, I am confused and study it, but it look like need to understand how to balance internal resistants a crossover output with input of the amplifier.
I was concerned by a hump of 150 hertz and rise at low frequencies was necessary to make real sound . Speakers can play very low without problem . So far too early speak to me it seems that KZ gives a soft bass, and does not go low, plus Vocals are thin sounding and do not have much body on many instruments .
Now I want to understand how to balance XO and the amplifier. Changing adjusting XO output the trimmer resistor the output resistance which affects frequency characteristic not only between crossovers but also on this XO frequency . I do not know yet how, I am confused and study it, but it look like need to understand how to balance internal resistants a crossover output with input of the amplifier.
Yes sumotan you right . Now look like much better in many ways sound , I take of silmic , and return trimmer resistors position like before . But this is not final . My KZ 100v . Right now I use KZ in the amplifier on the LF and MF . and also in the MF and LF crossover only KZ right now . On amp an XO HF I got mix, Panasonic FC Silmic and KZ . Take off Silmic 1 day ago Not so everything is bad tragically, it is a lot of positive shifts and I thing capacitors not cooked well don , lets play little more time . Now so what I hear : Sound became less distorted, the piano changed to the best. There were new bouquets of harmonicas which fell down earlier, but also some things were gone. Interesting sound . More clear . I judge a sound having listened to many records so whgat I'm doing right now . (JRiver+DAC)
While listened wrote down not to forget that as plays. Just impressions comparing it on memory as sounded earlier.
Little less attack (???) over all became seems, but it is more details. Good attack on high mids and the same time more brightness and little too much on Mid high Fq . Guitar sounding very good ,( best ). The banjo and similar instruments little sound small. ( ) The bass is not built well, smeared on a stage, like surround effect on same records . The bass guitar sounding less naturally, reminds me the softness of subwoofer , very indistinct bass more. Bass does not go very low not receive earthquake. Generally the sound in what that became better the general specification, many instruments sound more clear , less distortions, more detail , the piano was always problematic now it became much better. The vocals on some records has no completeness, instrument on same records also not absolutely have a full body. The structure of harmonicas exchanged, I mean a pravilsny combination of harmonicas which create the general natural picture,vibration , filling a sound became now cleaner more bright and different harmonics activate , in many aspects other vibration feelings in harmonicas were shown. The top middle is bluff. I hear a little incompleteness of a body just a little on same records . The completeness of classical orchestra, massive or completeness of little bit disappear is very much felt on classical music. Look like too much high mids , EQ not help this is voice of capacitor , like character Drums not such dense and real as have to be on concert of Deep Purple , more sharp, skin on drums because of a bit body in a sound, a certain parody of small speakers not so vibrates and dynamic it is not obviously expressed, it a is a little not enough. The piano became much better with the smallest distortion. Saxophones not so strongly blow from speakers like before . KZ are not on friendly terms with the top mids , very sharp . Its good on dark speakers Hi Fi
Soundstage: Everything that about the center stage (mono )move little back. I would not tell that the stage with KZ wide, it is more similar to defect with a phase, a certain blurring. It possible is can be difficult to make holographic 3D sounding of such blur stage possible capacitors not burn complete .
An good volume sound right now Very Good , of course same moment much better then before, more clear , more detailed , same more dynamic , and so on . Little to bright on high mids and violins viola sound less natural . What is progress on low volume will see at evening time. Like before and after crazy separation instruments .(Super crazy separation )
Lets play one week more .
It can sound for many what I will tell now :
KZ turned out very bad for a sound on LF. I'm changed back capacitors that stood on LF earlier. The sound returned, massive, realistic and so on .
As sing KZ on LF:
The frequency balance does not change but so what i funded it look like there was information digradation of a sound on LF.
LF were squeezed and lost information. I tried played with equalizer any adjustments were useless , unbelievable It crazy , It was like my speakers can play right and low, any changes was miserable . EQ never correct sound if no information on signal or speakers can't reproduce right sound . In this case KZ make bad sound .
My LF XO and Amp frequencies up to 400 Hz with KZ changed sounding for the worse, Many instruments became thinner than before, a bass guitar small, drum did not give realness and dynamic natural blow, cannot go very low frequencies in records at all where they are present.
KZ cannot go low , the top average bass is clamped, there is no attack, is more similar to the compression splashes squeezed and hooting .
The singer's voice, musical instruments were clamped and had no full body, the bad bass realness, a lot of good realism from LF sound was gon .
Very cheap sounding, full digradation on LF
My point of improving Braun make this system play with more reality, more energy , and so on , KZ make huge step back on LF
KZ MID frequencies:
so far left and I listen.
All talk on a big and wide stage which is done by capacitors is a huge mistake of many appraisers, it actually is the defect of a sound given by capacitors . The effect is interesting, cool , but reminds a gruel more . I need more time to make any conclusion.
There is a wide stage in a sound, but also there was blurring of stage images wach instruments separation , this that reminds me Hi FI speakers with the internal passive crossover .
There is also a suspicion, the bad effect compression splashes appeared on same records
The top middle unpleasantly sticks out, offends an ear.
My MF XO and Amp right now has KZ .
It is possble Panasonic PC can be truly player , seriously I don't know.
Experiments must goin on
KZ turned out very bad for a sound on LF. I'm changed back capacitors that stood on LF earlier. The sound returned, massive, realistic and so on .
As sing KZ on LF:
The frequency balance does not change but so what i funded it look like there was information digradation of a sound on LF.
LF were squeezed and lost information. I tried played with equalizer any adjustments were useless , unbelievable It crazy , It was like my speakers can play right and low, any changes was miserable . EQ never correct sound if no information on signal or speakers can't reproduce right sound . In this case KZ make bad sound .
My LF XO and Amp frequencies up to 400 Hz with KZ changed sounding for the worse, Many instruments became thinner than before, a bass guitar small, drum did not give realness and dynamic natural blow, cannot go very low frequencies in records at all where they are present.
KZ cannot go low , the top average bass is clamped, there is no attack, is more similar to the compression splashes squeezed and hooting .
The singer's voice, musical instruments were clamped and had no full body, the bad bass realness, a lot of good realism from LF sound was gon .
Very cheap sounding, full digradation on LF
My point of improving Braun make this system play with more reality, more energy , and so on , KZ make huge step back on LF
KZ MID frequencies:
so far left and I listen.
All talk on a big and wide stage which is done by capacitors is a huge mistake of many appraisers, it actually is the defect of a sound given by capacitors . The effect is interesting, cool , but reminds a gruel more . I need more time to make any conclusion.
There is a wide stage in a sound, but also there was blurring of stage images wach instruments separation , this that reminds me Hi FI speakers with the internal passive crossover .
There is also a suspicion, the bad effect compression splashes appeared on same records
The top middle unpleasantly sticks out, offends an ear.
My MF XO and Amp right now has KZ .
It is possble Panasonic PC can be truly player , seriously I don't know.
Experiments must goin on
One should never use one type of capacitor when tweaking Pashka. All caps have a certain sound to it so you must play enough to know their sonic signature. Re bright mids suggest that you try a mix of Elna Silmic not Silmic ll ya or Pana FC. The FC sound not too bad but on certain applications its tends to sound too forward
Kz is not making the sound worse Pashka. It is what you did that made it sound worse. The signals are being handled by the XO before it gets to the amp. That’s why I kept saying go back to stock & focus on getting the XO to sound good first before going to the amp. Btw as suggest by someone which you took his advice, changing amp PS caps to 10,000 uf is actually not a good thing. Too much of anything is never good. All you get out of it is tighter bass & focus but at the same time you loose the spaciousness or bloom of the sound which your looking for. If a circuit & speaker combo does not require that much reserve energy putting lots of Uf is not only a waste of money but also kills the sound.
Btw think you have a measuring gadget right ? Measure the esr of the stock caps, Im sure it is very much higher then KZ. All boutique caps have low esr & in order to create synergy, the preciding stage which in ur case is the XO, signal transmission speed must be in sync with the amp. This is something to think about Pashka & it’s also why you discovered that replacing KZ with stock cap brought back the sound.
Kz is not making the sound worse Pashka. It is what you did that made it sound worse. The signals are being handled by the XO before it gets to the amp. That’s why I kept saying go back to stock & focus on getting the XO to sound good first before going to the amp. Btw as suggest by someone which you took his advice, changing amp PS caps to 10,000 uf is actually not a good thing. Too much of anything is never good. All you get out of it is tighter bass & focus but at the same time you loose the spaciousness or bloom of the sound which your looking for. If a circuit & speaker combo does not require that much reserve energy putting lots of Uf is not only a waste of money but also kills the sound.
Btw think you have a measuring gadget right ? Measure the esr of the stock caps, Im sure it is very much higher then KZ. All boutique caps have low esr & in order to create synergy, the preciding stage which in ur case is the XO, signal transmission speed must be in sync with the amp. This is something to think about Pashka & it’s also why you discovered that replacing KZ with stock cap brought back the sound.
Sumotan, (sorry I don't know you real name )
PS 10000uf make more vibration make more sound compite , not big different , but I hear ,much better, > Today I have Id , maybe try bigger caps for PS . Over all now sounding perfect . I want maximum realistic sounding system. Any small changes improvements w'll make me happy .
My mistake was that I mixed different condensers at once. It took more time to understand as sings each of them.
KZ is still good on MF , is very realistic sounds. KZ gave on MF more details, lives, presence sound stage. The piano is very good, a vocal super realistic , string instruments sound magically it is the most important trump of KZ.
Now I listenvocal and piano, just super even the wide stage of KZ gives the huge charm to realness.
With KZ on MF XO became more reality .But KZ not for LF is 100%.
This is mine main set of amps first generation 10500 . it was recap in NY before I bought them . You can see capacitors what was and now on LF amp and XO.
I'm ask everybody , maybe some one know this capacitors .
PS 10000uf make more vibration make more sound compite , not big different , but I hear ,much better, > Today I have Id , maybe try bigger caps for PS . Over all now sounding perfect . I want maximum realistic sounding system. Any small changes improvements w'll make me happy .
My mistake was that I mixed different condensers at once. It took more time to understand as sings each of them.
KZ is still good on MF , is very realistic sounds. KZ gave on MF more details, lives, presence sound stage. The piano is very good, a vocal super realistic , string instruments sound magically it is the most important trump of KZ.
Now I listenvocal and piano, just super even the wide stage of KZ gives the huge charm to realness.
With KZ on MF XO became more reality .But KZ not for LF is 100%.
This is mine main set of amps first generation 10500 . it was recap in NY before I bought them . You can see capacitors what was and now on LF amp and XO.
I'm ask everybody , maybe some one know this capacitors .
I don-t know how its work , i replace old caps with the same uf value .
probably PS capacitor 10Kuf is burned more and more and I see a difference at low frequencies, it sounds perfectly now. more detailed LF , more life , natural .
KZ is real bad on LF all spoiled, replays today at night it was over me .
I need know what capacitors on pictures
I listened music at the friend audio shop High end , that struck me , a sound was at me inside my head as in earphones mono signal all other was was a tridimensionality. It seems I know how to make a holographic three-dimensional space and here is how to move stage very close it did not turn out yet. So far I listen to music from the 10th row now in the hall.
I will try Panasonic FC , it is interesting.
Good Id , Thanks . I'll try . I need time . I want make a life one amps from second set .
I sit and listen space music and I want to cry , not with music, and that I look at the scheme of the amplifier and I understand nothing how this works and more . By bad accident I left tweezers on a table then the amplifier on it put and got consequences:
Transistors burned down
T606
T604 605
Resistors
P607 P608
This is all this that I found. Replaced all burned-down spare parts turn on and T604 T605 and fuse burn again , I check again resistants between two amps good one and this and all was looking fine , turn again and the same story . T604 and T608 burn again. Instead of a BD137 BD138 I use BD139 BD140.
Where and what I need check , where can be problem ? This is my second set of amp Braun .
Thanks
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