Posted by spkrman57 [ 66.61.139.180 ] on January 26, 2006 at 05:53:15:

In Reply to: Re: Tweeter voice coil posted by Wayne Parham on January 24, 2006 at 13:45:51:

Aluminum voice coil is lighter.

Take in point the JBL E-140 with copper voice coil is 100db/watt and the E-130 is 105db/watt.

The E-140 is a deeper voice coil than the E-130 but the E-140 is copper and the E-130 is aluminum used for lighter weight to wrench every last bit of efficiency from the driver.

Reason I know this is because I have a pair of E-140's being reconed to E-130's and this discussion came up on lansing heritage forum.

Ron

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