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RE: Tweeter problem with 3.3Rs

Two things, Colin,

1. To remove the sock, you first have to undo the 20 screws which hold the ribbon "cage" to the MDF, so you can lift out the ribbon cage ... so you can get at all the staples in the ribbon slot. But make sure the protective strip is on, first.

When you put new socks on, you have a choice:
a) just slip them over the frame, not fixing them into the slot before re-installing the ribbon. (You'll find you can still put the protective strip on the ribbon, over the cloth.)
or
b) install them how yours are installed now. IE. cut out a strip where the ribbon slot in the MDF is and staple the sock to the sides of the slot, before putting the ribbon cage back.

2. Measure the empty space that you have between the magnets on each side of the ribbon. My IIIa ribbons have a gap of just over 1/4"; their resistance (you need to disconnect the wires at each end from the XO to measure this) is 2 ohms.

I believe your 3.3 ribbons are the narrower ribbon that's used in the 3.6 (and the 3.5) ... if so, the gap will be quite a bit less than 1/4" (maybe 3/16"). If so, your resistance is 3 ohms (thinner ribbon means less foil which means higher resistance).

People on this forum have replaced their ribbons themselves but it's a bugger of a job! :-(( (I certainly wouldn't attempt it! :-)) )

Good luck,

Andy

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