Today's Message Index:
----------------------
1. 08:51 AM - C90 faceplate issues (Bobby Braun)
2. 12:32 PM - Re: C90 faceplate issues (Roland M)
3. 12:39 PM - Re: Possible timing / phase issues (Roland M)
Message 1
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| Subject: | C90 faceplate issues |
--> XDP4000X-List message posted by: Bobby Braun <BobbyBraun@comcast.net>
A while back, I remember a post about the C90's faceplate being overly fragile.
I've had my c90 for around four years now, and have faithfully used the
remote any time possible to minimize the use of the face.
Well, the other day, just up and out of the blue, the rotary dial on my face
stopped clicking. It just spins now, and isn't nearly as accurate as it used
to be. Very disappointing.
What I'm wondering is, has anyone else had or dealt with this issue before,
and is it something I may fix, i.e. a little piece fell loose inside or whatnot?
Bobby
Message 2
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| Subject: | Re: C90 faceplate issues |
--> XDP4000X-List message posted by: "Roland M" <mdx400@hotmail.com>
Either a lot of dirt/junk has gotten in the rotary switch over time (so as
to gum it up enough to stop it from clicking) or it has just worn out. The
latter is more likely I suspect. The C90 uses the same (or a similar)
rotary switch to most other Sony FPs that were made from 96-98 or so. So I
believe you may need to change out the whole rotary switch inside the FP.
It isn't that hard to do (if you have some electronics/soldering
knowhow)--there are just a few points that require being desoldered/soldered
to remove it and install a new one.
Dunno how much the part costs, but looking at partsolver.com at parts that
may be the rotary switch (don't know what part it is for sure), it might be
around $15-20. Again, I can't be sure as to that price as that might be the
outside ring and not the inside switch that I looked up.
Roland M.
>From: Bobby Braun <BobbyBraun@comcast.net>
>Reply-To: xdp4000x-list@matronics.com
>To: xdp4000x-list@matronics.com
>Subject: XDP4000X-List: C90 faceplate issues
>Date: Thu, 08 May 2003 10:49:33 -0500
>
>--> XDP4000X-List message posted by: Bobby Braun <BobbyBraun@comcast.net>
>
> A while back, I remember a post about the C90's faceplate being overly
>fragile. I've had my c90 for around four years now, and have faithfully
>used the remote any time possible to minimize the use of the face.
>
> Well, the other day, just up and out of the blue, the rotary dial on
>my face stopped clicking. It just spins now, and isn't nearly as accurate
>as it used to be. Very disappointing.
>
> What I'm wondering is, has anyone else had or dealt with this issue
>before, and is it something I may fix, i.e. a little piece fell loose
>inside or whatnot?
>
>Bobby
>
>
Message 3
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| Subject: | Re: Possible timing / phase issues |
--> XDP4000X-List message posted by: "Roland M" <mdx400@hotmail.com>
>From: Bobby Braun <BobbyBraun@comcast.net>
>Reply-To: xdp4000x-list@matronics.com
>To: xdp4000x-list@matronics.com
>Subject: XDP4000X-List: Possible timing / phase issues
>Date: Tue, 29 Apr 2003 00:39:45 -0500
>
>--> XDP4000X-List message posted by: Bobby Braun <BobbyBraun@comcast.net>
>
>I find myself still a bit confused as to how the digital time alignment
>works in the 4000x. I've heard rumors that it acually shifts the phase
>instead of just delaying the sound from channel to channel. If anyone has
>any definate knowledge as to how it actually works, please, enlighten me.
>
>
>Driving down the road the other day, I realized that the bass actually got
>noticibly louder when rolling down both windows. It's fuller, and fills the
>car better. That made me think that the polarity of my subs needed to be
>switched, since that's the common answer to that issue.
>
>I went ahead and switched the polarity, and noticed almost no change
>whatsoever, the bass level stayed close to the same, the peaks were a
>little less, but even after the switch, the continuous bass level got
>louder, again with the windows down.
>
>Bobby
>
Though I am unsure as well as to how a 4000X controls the alignment I think
it does do phase-alignment. I once read that the difference in the
alignment from the 210EQ to the 4000X is that the 210EQ does time-alignment
(delaying the signal) whereas the 4000X does phase-alignment (it changes the
degree of phase of the drivers to accomplish the alignment). Whether there
is a big difference in the methods (or if they are the same even) I don't
know.
As for the bass getting louder rolling down the windows--this will happen in
ANY car! It doesn't have anything to do with phase or anything like that.
With the windows down, the drivers can simply move more air and that results
in greater sound pressure. Does your Regal have a flip-down folding rear
seat or even a "ski" passthough? If it does then I'd recommend folding some
part of the seat down or opening the passthrough. This will make a large
difference in the amount of bass response you get from any given sub setup
that is in the trunk. If you don't have that option then you can always
modify the vehicle so as to "port" the bass into the car by cutting holes in
the rear deck or by removing the rear speakers (if they are in there) and
letting the air flow through the holes.
Roland M.
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