Ferrari Mailing List: Re: Need help with stereo in Ferrari

(continued)

I cant agree more,

With the tubi and K&N, my car is almost as loud as I would like it. I  

was in a rock band for 22 years and

like the sound of music sometimes when I drive, sometimes just the  

car.  I guess you could compare my

persona to the last five minutes of "A Star is Born" or the first five  

of "The Hidden"

I want to just chuck this whole project but this thing sounds GREAT  

with the car off, now if I could only get

it working with the car on......

I am amazed at the knowledge base of all the listers here and want to  

thank you all again for your help.

My console is apart again for the third time (im getting better at it  

now) and I hope to resolve this one way or the other...

Rob
Robert W. Garven Jr.
rgarven [at] gmail.com

 "The Ferrari is a dream - people dream of owning this special  

vehicle and for most people it will remain a dream apart from for  

those lucky few". Enzo Ferrari

On Mar 8, 2009, at 4:58 PM, Red5hilser [at] aol.com wrote:

I guess it all depends on what you bought your Fazazz for. Some like  

the

opulence of the fine leather interior, the look of success, and the  

quiet ride

while being able to enjoy the performance of a state-of-the-art  

stereo  system.

Me? Not on your life. With the four 2-throat Webers sucking air and  

gas

louder than Monica in the Oval Office, and the Euro headers to pipe,  

to  tin-can

exhaust, I couldn't hear good stereo if I even wanted to. (which I   

don't!)

That's not why I drive a Euro Ferrari. No cats, no smog pump, no   

nada.

One of the big disappointments of my life was sitting in an America   

spec 348

GTS in Tucson and revving it up only to hear what sounded, to  me,  

like a

Singer Sewing Machine at half treadle in the old L.A. garment   

district back in

the day.

Sorry, but that's the way I feel.  --  Yer pal, Ferrari  Bubba

In a message dated 3/8/2009 12:06:19 P.M. Central Daylight Time,
dnt [at] dock.net writes:

I  recently attended a diagnostics OBD II class covering the new  

onboard

communications protocol called CAN (Controller Area Network). For  

2008,  CAN

is used on all U.S. passenger cars and light truck.

Found a  break in a wire?  Want to repair it?  This touchy system  

requires an

exact number of twists per inch, same length and gauge wires and  

don't  even

think about splicing unless you hold an ME in advanced auto   

electronics.

My head hurt after that séance.  heh  heh
DOUG
(does electricity flow over or through a  conductor?)

----- Original Message -----
From: "Charles Perry"  <charles [at] carolina-sound.com>
To: "DOUG" <dnt [at] dock.net>
Cc:  "The FerrariList" <ferrari [at] ferrarilist.com>
Sent: Sunday, March 08,  2009 8:42 AM
Subject: Re: [Ferrari] Need help with stereo in  Ferrari

Just for everyone's future reference, the basic  problem with all car

audio systems with respect to noise is that car  audio is  

unbalanced by

design (meaning the music's electrical return  path and ground are  

the

same conductor). A properly balanced system  (most pro-audio  

equipment)

uses three conductors (positive, negative,  ground), rather than an  

RCA

line's two conductors (positive,  negative/ground).

The signifigance is that the "shield" of RCA  wires is not actually a

shield since it is carrying the music signal.  That is also why it  

is so

prone to picking up noise. This is why  things like Monster Cable

interconnects are complete wastes of money.  Extra layers of  

shielding

are, by definition, not shielding in car  audio, nor in the vast  

majority

of home audio (anything with RCA  connectors).

This is also the hint of truth in Jeff's  suggestion for using  

network

cable. Network cables are balanced and  use their twist as part of a

noise rejection scheme (same as balanced  pro-audio cables). This  

works

in networks due to the balanced  electronics on both ends. Using  

network

cable for car audio will not  give you the same benefits because the
electronics at both ends are  unbalanced. It will still work, but no
better or worse than regular  RCA cables.

In the 90's Rockford Fosgate tried to introduce  balanced audio  

into the

car stereo world in their upper-end lines but  it was expensive and
poorly understood and did not catch  on.

My current favorite scheme is using fiber-optics as  interconnects,  

but

this requires equipment that is designed for that,  which is  

expensive.

-- charles

-----Original Message-----
From: Jeff Greenfield  [mailto:coyote [at] acme-ltd.com]
Sent: Saturday, March 07, 2009 10:24  PM
To: Charles Perry
Cc: 'The FerrariList'
Subject:  Re: [Ferrari] Need help with stereo in Ferrari

Three things  come to mind.

One is that you are picking up RF noise from  through your RCA  

cables.

Believe it or not, I have read that the best  thing to use for to  

connect

components in a car is CAT 5 Network  Cable. I've used this (making  

my

own

cables) on the last few  installs I've done and have had no  

interference

problems at all.  Sometimes the shielding in shielded cables will
actually pick up  noise.

The other possibility is that you are having a ground  loop  

problem. This

occurs due to a very small difference in potential  (essentially  

voltage)

when components are grounded at different points  on a cars  

chassis. You

can try a ground loop isolator to see if it  reduces or eliminates  

the

noise.

One last thought, if  your sub uses speaker level inputs from your  

head

unit, sometimes this  causes random popping usually when switched  

on and

off. If there is  any way you can use line level inputs to the sub (I
assume you are  using a sub that has its own amp) you would be much
better  off.

Jeff
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Re: Need help with stereo in Ferrari	<– Date –> <– Thread –>
From: Robert W. Garven Jr. (rgarvengmail.com)
Date: Sun, 8 Mar 2009 21:19:36 -0700 (PDT)