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Sony APM 790 Speakers - Disassembly, Cleaning, & Capacitor Replacement (repair) 

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Sony APM 790 Speakers - Disassembly, Cleaning, & Capacitor Replacement (repair)

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15 сен 2024

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Комментарии : 27   
@TuiCatNZ
@TuiCatNZ 4 года назад
Lol. Your right about them not being audiophile. That's a joke of a crossover. Who knows if the driver's are good, but if you like them, getting a proper crossover made for them would probably be a huge improvement.
@trulyblessed5236
@trulyblessed5236 2 года назад
Hi i have a paur of apm speakers from Sony... It sounds good. How will i know if the crossover is right for my speakers?
@norbertro8709
@norbertro8709 3 года назад
You have to glue the back, otherwise you will have vibrations. Also someone suggested a little work on the wood, it's a good idea for the next time :) Overall a nice presentation.
@myaacount
@myaacount Год назад
Wow impressive, i have a Sony APM 910AV model & one of the tweeters is winded but the quality is not the same as it use to be for HIGHS, i think i need to replace both tweeters... By they your model looks nice in Wood color & i wish i got the Sony APM 910AV in same color but my is in BLACK...
@barbarahoppes1870
@barbarahoppes1870 5 лет назад
Very well done video...love your voice..so calming!
@crazymetallian
@crazymetallian 5 лет назад
those were polarized caps.... i had amazing resoults using non polarized polipropilene caps which are the ones being used today for crossovers...
@nathanmorrow6981
@nathanmorrow6981 4 года назад
"NP" non-polarized
@yvesboutin5604
@yvesboutin5604 3 года назад
This is a nice video and it is obvious that you love those speakers a lot, but at the same time I am a bit surprised that you didn't try to upgrade them. Of course, these are your speakers, so you treat them as you like, but if they were mine, I would have made the effort to put better quality capacitors to replace what is the cheapest on the market. Also, since the back was completly open, I would have put a piece of wood horizontaly in the midlle of the box to stiffle those pesky vibrations we hear at specific frequencies. Maybe a little bit more damping material could also help with the 'midrangy' tonality you were speaking of. Even the plastic pedestal could have benefit from a bit of weight and damping, because these too can transmit vibrations. Now, I challenge you to modify only one of the speakers and try a right/left demonstration with a monophonic recording. You can record the difference and show us how much it will have improved the quality. Do you accept that challenge?
@midorihibiki
@midorihibiki 5 лет назад
Wow they look like planar or electrocstat speakers. Nice vintage Sony speakers.
@TheTarrMan
@TheTarrMan Год назад
I just watched a digi-key to do this and I chit you not the total after shipping was $6.66. I have the exact same speakers. I'm underwhelmed by them listening to them on my Pioneer SX-1250 and I'm going to try this. I also just bought some Pioneer AMP 100's (Going to pick them up Monday) this should be interesting.
@BostonMike68
@BostonMike68 Год назад
I have the same speakers and I was hoping you would share what kind of caps you got because I don't how to figure it out I don't know why you wouldn't share that
@josephlalock8378
@josephlalock8378 2 года назад
you make a point of showing that the capacitors are non polarized yet you replaced them with polarized capacitors. i personally do not use electrolytic capacitors for electronics in speakers, i use film capacitors made for crossovers. but they do make non polarized electrolytics for crossovers also.
@zsoltboczen5231
@zsoltboczen5231 4 года назад
The video mentions re-foaming. Just for the record those speakers do not have foam, but textile surrounds so they won't rot.
@Btos_90
@Btos_90 3 года назад
Wow amazing job!
@TechStuff1
@TechStuff1 3 года назад
Thank you!
@edugomh
@edugomh 5 лет назад
condensadores tienen que ser no polarizados
@kotokoto9472
@kotokoto9472 5 лет назад
Hi an audio review with these speakers can you?
@krismichalsky
@krismichalsky 4 года назад
OMG, that cabinet is screaming for some poly fill, at least on the sides and back of the cabinet.... Anyone agree with me?
@1969leonar
@1969leonar 3 года назад
Yes, fiberglass foam
@yvesboutin5604
@yvesboutin5604 3 года назад
Yes, I agree with you. Plus some bracing inside the box and damping for the plastic pedestal!
@salvadorrodenas3071
@salvadorrodenas3071 2 года назад
Yes!!!!! Someone opened it before and removed the glass fiber. Not all is aesthetics, what you don't see can be more harmful to good sound.
@josephlalock8378
@josephlalock8378 2 года назад
no, i don't use polyfill in ported speakers myself. a better damping material on the rear wall might tame midbass coming from the rear of the woofer... like some eggcrate foam.
@salvadorrodenas3071
@salvadorrodenas3071 2 года назад
It is quite deceiving of how (in quality) low Sony went with this APM speakers compared to the APM-77ES/ APM-66ES/APM-22ES.
@speakertester.1861
@speakertester.1861 5 лет назад
I tought it had a bigger magnet on the woofer
@tomasdub7382
@tomasdub7382 Год назад
Next time, foil capacitor.
@BostonMike68
@BostonMike68 Год назад
Those magnets and that frame is thin what is that.5 " particle board I would reinforce the center spray the inside insulation spray let it expand then spray with flex seal and the be sturdy and non resident then put 10" driver's and 3".5" full range mids and a nice 1" soft dome tweeter put insulation two way tape on the back of speakers replace the posts with some new ones and you would have a speaker that would rival anything I just did the same thing to a shit pair of Technics and they are now the probably one the best I ever heard I would put a whole new crossover not a couple of caps I buy them pre made for $25 and they Prof built
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