Headrest speaker phasing

Archives of Posts to the NZ MX5 List back in 2004
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carl.halvorsen

Headrest speaker phasing

Post by carl.halvorsen » Tue Aug 24, 2004 9:14 am

Can anyone tell me what the colour codes are for the headrest speakers +
and - on both seats. I am replacing the OEMs with aftermarket and don't want
to demolish the originals to look inside.

Carl

Grant
Need, more, 5-ing, time....
Need, more, 5-ing, time....
Posts: 175
Joined: Thu May 18, 2006 9:41 pm
Location: Sunny Blenheim

Headrest speaker phasing

Post by Grant » Tue Aug 24, 2004 10:04 am

The colour code doesn't always give the right answer. As the wiring is often
confused on the headrest speakers, the best method is to do a simple phasing
test. Disconnect the speakers with the plug under the seat. Get a 1.5volt
dry cell battery and connect it to one of the speakers. Note which way the
cone moves. Note the colours and battery polarity.. Now connect to the other
pair of wires and note the connections required for the cone to move the
same way. While you are at it, check the front door speakers as well. Ensure
that only one speaker moves for each pair of wires (per seat) as well as
sometimes the factory connections are so confused as to being connected to
both speakers at once. Mine were. Finally connect all speakers so that they
all move in the same direction for the same battery polarity. I assume the
headrest speakers will be connected to the radios rear speaker outputs with
the door speakers to the front outputs. This way you can balance the
improved sensitivity of your new speakers.
It's well worth the effort for the much improved sound.
Grant.
Red 2006 NC Tiptronic
FIX A PC

Bill Rehm

Headrest speaker phasing

Post by Bill Rehm » Tue Aug 24, 2004 11:19 am

Carl

What brand of speakers are you replacing the headrest OEMs with and how
much did they cost.


Regards
Bill

carl.halvorsen

Headrest speaker phasing

Post by carl.halvorsen » Tue Aug 24, 2004 5:42 pm

Hi Bill
I bought them on eBay from Bass Enterprises.
They are Clarion SRC924 3.5".
They were only $US13 a pair but on top of that they wanted $US85 to send
them to NZ. So I got them to send them to a friend in San Diego ( cost
$US20) then she sent them to me which cost another $US26. An example of
selling items cheap then hitting you with an exorbitant shipping charge.
Go to eBay and search for Clarion 3.5" speakers. I could not find any 3.5s
in NZ.

Cheers
Carl

Bill Rehm

Headrest speaker phasing

Post by Bill Rehm » Wed Aug 25, 2004 6:50 am

Carl

Did you have to cut the foam to fit them?

Regards
Bill

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