Planar speaker - first try

[JAMESBOS]

Originally Posted by jay53

JAMESBOS,

Appreciate your quick response. So Ferrites it is. I wonder if one could use the double sided foam tape to anchor the tensioned film as it is generally done on Electrostats. Do you find it desirable to use Subwoofer and a Ribbon Driver to augment the Planar ?

Jay

never tried the double sided tape myself , don't think I would want to neither.I would find it more difficult to place the tape in position in relation to the magnet interfaces, which is difficult with a tape only 3mm wide and no gaps between the magnets. You don't have this problem with ESL's as there are no tapes to fit to a specific position! I have never used a heat gun to shrink mylar (12um), as I don't know what effect it would have on the glue and the aluminium tape!? These are full range so they don't kneed any augmentation in the treble or bass. The bass is very tight no boom whatsoever compared to quad esl's. I have the 57 and the 63 which sound very plummy and resonant in comparison. Of course this could be my preference, other people may not agree. Each to their own!!

[SM7UYJ]

A question I have had fore some time following your builds Henry ( wich I find great pleasure in doing) : -Why glue the coils to the Mylar before you tension the film?

Why not use similar construction methods as electrostats and glue the coil to the Mylar when the film and magnets are in place?

/R

[JAMESBOS]

Electrostats don't have coils, so you can stick it in position then heat shrink it. When I put the tape in position I run a roller over it and you can't do this when it is in position. The wood holding tape in position is easier to adjust than double sided tape. Which can cause wrinkles etc. The wood surround doesn't lose it's grip and the glue doesn't dry or deteriorate as you don't use any. It's a natural thing for me in the circumstances, you can do what comes naturally or something else, each to his own.

[JAMESBOS]

I NO LONGER USE THE EPSILON LAYOUT. I USE 3MM TAPE NOW. WHICH IS A LOT EASIER TO LAY.Make sure you roller the tape as the glue is not instant like the CPC 9mm tape.

[JAMESBOS]

SOME MORE

[tinitus]

hey Henry

you are beginning to look an expert

and your thread title is beginning to look 'old'
I think have passed the first try a long time ago how many now ?

[JAMESBOS]

HEADPHONE FINALISED, ALTHOUGH NOT FINISHED.THE LAST 2 PICS SHOW REPAIR WHEN I DAMAGED THE FOIL. SHOWING MDF USED SO I CAN USE ROLLER.

[tinitus]

hey, take care those magnets dont 'clash' in the headphone

[JAMESBOS]

STILL GOT ANOTHER 30 REBUILDS TO DO,WILL IT NEVER END!? Still keeps my mind active. At 74 it's a good job. I'm glad I don't have to cut anymore meters of tape. Just ordered another 31 reels of the 3mm tape ,should be enough, hopefully. I have had clashes with my neos before, only the big ones tho'. It's easily done as well, a second is all it takes then crash! I was not between luckily!

[tinitus]