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I realise all those years I've been using my (K55V) drivers on EV SM120A horns without any gasket inbetween.
On my old Klipsch horns there was some red sealing gaskets between driver and k400 horns, wich i never thought of taking out and using on my new horns.
Since ordering a pair of new drivers from Bob Crites I've ordered a pair of sealing gaskets as well.
But are they always necessary? or is it the rough finish of the K400 horn that makes these gaskets mandatory? EV SM120A has a smooth flat metal piece where the driver comes and screw.
without the gasket they is likely going to be a gap or at best a poor transition. The gasket is there to make a seal between the driver and the horn. Don't over tighten there should only be enough pressure to make for a snug fit. If you over tighten the gasket will bulge and distort the flair rate which should ideally be continuous from the driver to horn. Look also that the id of the gasket is the same as the od or exit of the driver which should also match the id of the horn throat. Happy trails.
Get a file folder and cut a gasket from the cardstock.
Yesss.. it will be at least as good as OEM.
Should take less than 5 mins each side (assuming you need a pair)
I have had gaskets on all drivers/horns I have used. The gasket is part of Altec, JBL and Selenium drivers.
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