JVC M90 Tweeter Caps - What Value Is Used For Hi-Pass Crossover?

[Cpl-Chronic]

Heyya, =)

Got this M90 & can't tell what the values are for the capacitors used to crossover the tweeters. What type, uF rating & tolerance is used for that sound? Just curious. Mine work perfect but selling so wanted to know before I let it go to my man Billy, the boombox kid.

Cheers,
Cpl

 

[Beosystem10]

According to the relevant page in Newne's (UK, 1981-1991 edition), the passives in these crossovers are bipolar 3.3microFarad electrolytics, at a vw of 16 Volts.

 

[JVC838]

In this thread you can see the original capacitors:

https://boomboxery.com/forum/index.php/topic/19720-keiths-m90-full-restoration/

these red-brown capacitors are high quality foil types with low tolerance and no aging effects.

Non electrolytics types !!!

 

[AE_Stereo]

In this thread you can see the original capacitors:

https://boomboxery.com/forum/index.php/topic/19720-keiths-m90-full-restoration/

these red-brown capacitors are high quality foil types with low tolerance and no aging effects.

Non electrolytics types !!!

First time ever seen such a Tweeter crossover capacitor in any boombox. All others have electrolytic.
May be that is the reason for the hyped up sound of M90 .

 

[Beosystem10]

.All others have electrolytic.

So does this according to the diagram in Newnes. Is this the aftermarket solution? Bipolars aren't the most reliable things in the world after all, and also shewn in the diagram is a choke, not visible in that set. Could the global versions be different in this area?

A PDF with the original factory diagram is available at my dropbox for any UK members who want this.