Grounding radio to avoid popping at power-on:

[Preston Brown <pbrown@econ.yale.edu>]

On Mon, 1 Apr 1996, Preston Brown wrote:


The previous diagram as a bit fubar.  Here's a better one:
 
RF = right front
LF = left front
LR = left rear
RR = right rear
 
 	|R|
 	|A|RF+ ------------------SPEAKER
 	|D|LF+ ---------------------|------SPEAKER
 	|I|L-  ---------------------+         |
 	|O|R-  -------------------------------+
 	| |LR+---+
   BLACK| |RR+-+ | 
 ---GND-| |    | |
 	| |    | |
        ---    | |
GNDED TO |     | |                       |---- RF+|P    |RF+ ---|
RADIO    |     | |             TAPED OFF |        |O    |       | TAPED OFF
CHASSIS  |     | |                       |---- LF+|W M  |LR+ ---|
         |     | |                                |E A  |
         |     | +---------------------------- LR+|R T  |LR+ ---AMP+SPEAKER-+
         |                                        |  C B|                   |
         |     +------------------------------ RR+|  H O|RR+ ---AMP+SPEAKER-+
         |                                        |    X|                   |
         |                                                                  |
         +---------------------SPEAKER NEG. LEADS---------------------------+
 
 

 I hope that this diagram is able to explain everything.  If anyone can 
 tell what's wrong with this picture, please HELP!  The little blurb on 
 the crutchfield install. sheet says that the diagram is for a head unit 
 with a FLOATING ground (4 negative leads).  I think I have a COMMON gnd 
 unit (2 negative leads only).  Thus should I disregard instructions to 
 connect negative leads to the chassis of the radio and instead wire in 
 the LR-, RR- from the box to the L- and R- of the radio?  Makes sense to 
 me...but just following directions (sorta). :)

---
 -Preston Brown
  preston.brown@yale.edu