Miata Mailing List: January 1993, Message #154
sponsored by



     


   From: (none)
Subject: Re: speakers, etc.
   Date: (none)

> So today I went out and had an Alpine 3547 installed (they did it
> as well as I could have in a lot less time, and possibly better). This
> amp is rated at 45W per channel at 0.04% THD. The project requires a
> "de-amp" to take the factory spkr outputs and
> turn them into "RCA" pre-amp levels. This was available at less than
> $30.

Another solution is to use the RCA output available through the
din connector on the back of the unit.  The wiring of this
connector was featured in a recent issue of the Miata magazine.  This
would privide a higher fidelity solution, but you would probably
have to do it yourself.  I have never found a single installer
willing to do such a thing.  The din connector also has line inputs
that can interrupt the output of the unit. By using inputs and
outputs, you could add a line-level (non-amplified)
CD player, equalizer or other accecory of your choice.  You could
also have a cellular phone interrupt and ring over the sound
system.  In all cases, you would need a wiring output connector
diagram from the accesory and do it yourself.
But I have done these kinds of things before on my Rx-7s.

My complaint about the factory unit is tape wow and flutter.  When
I listen music with high, constant notes (flutes, female vocals, etc.),
the gargling is terrible.  I have found that the unit needs very
frequent and thorough pinch roller/capstan cleaning, and it helps
to give it some warm up time, likely because the roller is made
of hard, cheap rubber.

I am wondering if I should have the dealer replace the unit.  Has
anyone else got any complaints about tape wow and flutter?


-- 
Oversteer is when the side         Dennis Ordiway
of the car hits the tree.          Systems Engineer
Understeer is when the front       Silicon Graphics
of the car hits the tree.          18201 Von Karman, Irvine, CA
                                   djo@sgi.com  Vmail: 8537