How deep can replacements for the woofer and midrange speakers be?

Front center speaker (924 and early 944 only) In the early 1970s, when the 924 was first designed, mono radios were still quite common. So a single speaker was all that was needed. In most cars this location is now unused, though it might be usefully employed for specialized radio needs (e.g. , cell phone, amateur radio, scanners, or CB radio).

A second possibility is to use this location to improve the sound staging of a stereo system. In the book Ultimate Auto Sound (ref 2), there are ideas for implementing a simple center channel concept. The author even includes construction details for a simple center channel mixer and bandpass filter.

Rear speakers (4 speaker systems) The rear speakers are located next to the rear seats in the side panels. Once again, these are Blaupunkt 4x6" speakers. The units in my '86 944 were actually coaxial speakers - paper cones again but with a rubberized cloth surround and larger magnets than the front speakers.

Despite the coaxial design, they are not ... more.

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