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MGIIIa midrange question

96.61.189.116
Posted on April 23, 2023 at 07:42:01
goryu
Audiophile

Posts: 299
Joined: July 17, 2021



On this model are the mid and bass drivers separable or are their conductors glued to the same sheet of mylar?

From the photo I have attached, the mid and bass appear to be one unit...


????

Thanks!

 

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Same chunk of Mylar but, posted on April 23, 2023 at 07:57:36
kff
Audiophile

Posts: 1108
Location: SE PA
Joined: October 19, 2006
 there is a separator for about half the length of the woofer. This would also tune the mylar.

 

RE: Same chunk of Mylar but, posted on April 23, 2023 at 18:47:19
goryu
Audiophile

Posts: 299
Joined: July 17, 2021
 Thanks. So the mid is not a separate driver that can be removed- the mid and bass are on the same myler....

 

That driver is a dual voice 'coil' framed sheet of mylar, posted on April 23, 2023 at 19:13:08
kff
Audiophile

Posts: 1108
Location: SE PA
Joined: October 19, 2006
 and can be removed from the mdf speaker. Both coils on the same sheet of mylar which is tensioned in the metal frame

 

RE: That driver is a dual voice 'coil' framed sheet of mylar, posted on April 23, 2023 at 19:47:32
ketchup
Audiophile

Posts: 641
Location: Pennsylvania
Joined: February 29, 2004
 It's not technically a metal frame in my opinion. The mylar is stretched over a ~1/4" thick mdf frame and thin steel strips are glued to all 8 sides of the mdf. At least that's how my 3.6s are constructed.

 

RE: the mid and bass appear to be one unit ..., posted on April 23, 2023 at 23:15:46
andyr
Manufacturer

Posts: 12655
Location: Melbourne
Joined: September 2, 2000
 Correct!

Therefore, intermodulation distortion occurs - same as all the 2-ways except the 2.5 & 2.6, and the 3-ways except the Tymps, possibly the 20.Xs ... and the 30.1s. :-(

 

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