Quad ESL Cap mods


Hello,
I have a pair of Quad 988 I'm considering replacing the electrolytic 220uF Capacitor for a film cap...

For those who have done it -- what caps give you the clearest extensions in the highs and improved mids without mudding the low???

Also, who makes a 220uF film cap? All I seem to find is lower values? Is it best to wire a bunch of lower value caps together for a total 220uF (if so, should you mix electrolytic caps with film caps - like some modders do) or is it best to have a single 220uF cap?

I do see Mundorf has 200+uF caps in their Tube Cap line -- are these Mundorf Tube Caps appropriate for the Quad ESL application? how do they sound?

Thank you guys very much for any and all input into this, as I'm just beginning my Quad mod journey...
128x128grateful

Showing 5 responses by grateful

Face,
Thanks for the forum input. Is the Mundorf 220uF cap you have film or electrolytic? What is the reference/catalogue number? Where did you buy? Whats you'r application and how does it sound?

Thank you,
William
Casouza,
Thanks for the great info. Any experimentation with the Mundorf TubeCap? Is the TubeCap appropriate for this type of application?

and When I replace the cap in the Quads -- does it have to be 220uF or can I go less?

Thank you,
William
I spoke to a moodder and he says F & T MPP caps with a Harmony cap bipass are the best way to go for the price. He feels the F & T MPP caps give a better result than the Mundorf MKP.

He sais the only appropriate cap for this (Quad esl) application is MPP type (Metallised Polypropylene) and of course they have to be of adequate voltage -- because of this, suitable candidates are limited and pricey...

Any comments?

Any experience or comparison of F & T MPP caps?

thanks,
William
i have a photo attached to my Quad listing on my system page that shows my caps mounted - maybe this will give you an idea. Best mod