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Mission 770 Speakers

I'm not sure if you've seen it but there's a good article on farad azima and the mission 770 at audio4maniacs.
It tells the complete histery from the original 1978 version with the chartwell driver's and Tell's the story of farad's obsession with the 770.
Its a good read. :thumbsup:
 
Lamar, Welcome to AK. Have Mission 737R's. Had to recap mine. Boza replaced the original cap with a much better Film cap.
 
Like them. Found them at SA for 15 each. But basically the crossovers in the 2 way missions are the same, just different cap values depending on the frequency of the crossover.
 
Bought Dayton film caps from Parts Express to replace the bad caps 4.7 mfd. 50vdc were the original caps. Saw a pair of 707's for 50 on CL locally.
 
I have 707 too...love them....50.00 is quite the steal......question....my 770 still sound ok but I noticed the brown "container" that hods the film cap is glued down...I saw a picture in this thread that showed the before and after of the 770 ('81 year I think, like mine) and in the BEFORE it showed the brown "container" and in the AFTER it showed the round blue capacitor...was the blue one a polypropylene? I still don't know what my values are
 
Lamar said:
I have 707 too...love them....50.00 is quite the steal......question....my 770 still sound ok but I noticed the brown "container" that hods the film cap is glued down...I saw a picture in this thread that showed the before and after of the 770 ('81 year I think, like mine) and in the BEFORE it showed the brown "container" and in the AFTER it showed the round blue capacitor...was the blue one a polypropylene? I still don't know what my values are
Click to expand...
I did replace caps in 707, 4.7uf
 
Lamar you would have to remove the "brown" on the cap. Read the value of the cap. Just replace it with the same value (mfd) and anything over 100vdc should be ok. My 737R's had electrolytic caps in them.
 
NAD80 said:
Lamar you would have to remove the "brown" on the cap. Read the value of the cap. Just replace it with the same value (mfd) and anything over 100vdc should be ok. My 737R's had electrolytic caps in them.
Click to expand...
I sent a note to Boza on which brand he used for cap for his 770
 
Lamar said:
I have 707 too...love them....50.00 is quite the steal......question....my 770 still sound ok but I noticed the brown "container" that hods the film cap is glued down...I saw a picture in this thread that showed the before and after of the 770 ('81 year I think, like mine) and in the BEFORE it showed the brown "container" and in the AFTER it showed the round blue capacitor...was the blue one a polypropylene? I still don't know what my values are
Click to expand...

NAD80 said:
I had asked Boza which cap he used but can't remember which thread it was back in 18.
Click to expand...

boza said:
I used wilmslow audio supersound cap's.
They sound a lot smoother but very open with a very large soundstage depending on the amp.
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