Cheap ipod boom box
From Sincityhackers
Contents |
My ipod boom box
This project is based on a jvc KS-SB200 boom box made for a KT-SR2000 Sirius Satellite Radio Tuner
You can order them from
amazon for about $20 (12/1/06 $49)
[1]
Allelectronics for $21.95
[2]
Ebay List with the usual shipping ripoffs..
[3]
Here is the dock i used $2.99 ( i paid $4.99 for mine 2 days before) compgeeks[4]
Like that hi tech rubber retention strap :)
If you have any questions go to the forums -->Forums
Read this forum post on how to disable bass boost and change eq settings [5]
First Step Open Radio
There are 10 screws to remove on the back of the boom box .
[pic back]
remove sirrus dock connector.. cut connector off of dock cable ..
Open ipod dock
After you remove the circuit board from the case you will have this
Then cut the ipod dock board from the usb/firewired board
and trim the ipod dock board like below on the yellow line
after trimming the board it should look like this
after you trim the board you will have to add 2 jumpers one top and one bottom
see yellow lines in 2 pictures below click on images for better view and make sure these are correct they are the power to the ipod
now take the sirrus dock connector and rip off all the connectors off of it .. i used pliers ..
then just use some double sided foam tape to put the ipod dock board on the sirrus dock board should look like ..
solder connections
idock J2A(boom box cable)
J3 - pin 5 Audio Ground
J2 - pin 4 Audio Right
J1 - pin 6 Audio Left
P1 - pin 9 Ground
P2 - pin 8 +12v
Making it all fit
you will have to remove some plastic from the inside of the boom box to give the ipod connector some more height .
i used a dremel with a sanding drum to grid the plastic down
you will also have to remove some plastic fron the outsie of the dock area if you have a large ipod .. you wont have to do it with a ipod mini
now screw the dock connector back inside the boom box ..
Image:Example.jpg
and make a spacer to take up the space from the back of the ipod to the boom box
Image:Example.jpg
now all you need to do is add some way to keep the ipod in the boom box i used a larger rubber band tied thru the slots in the boom box ..seems to work well
Image:Example.jpg
and thats it just reassemble the boom box and you have a cheap ipod boom box !!
How To Make It Sound Better
Pic below is the bottom of the amp board ..
the part we are looking for is the PT2389 5-mode eq with bass boost ..
data sheet here http://www.princeton.com.tw/webSite/downloadprocess/downloadfile.asp?mydownload=PT2389_5.pdf
To disable bass boost cut the trace at the bottom of r79 (no resistor is installed)
and to change the EQ type Remove R83 and install in one other location..
R80 Flat
R37 Rock
R81 POPS
R82 Classics
R83 Jazz (default has resistor installed)
or you can enable cyclic key mode ..
remove R67 0 ohm resistor and add a 4.7k resistor from vcc to a switch
and connect the other side of the switch to TP1
now you can click thru the different eq modes .
Connector Pinouts
idock pinout
U1 -
U2
U3
U4
UV - Ground Firewire
J3 - Audio Ground
J2 - Audio Right
J1 - Audio Left
P1 - Ground Firewire
P2 - +12v Firewire
P3
P4
P5
P6
J2A Pinout
1 - audio gnd
2 - audio gnd
3 - Fan On connect to +voltage to turn on
4 - audio
5 - audio gnd
6 - audio
7 - +12v
8 - +12v
9 - gnd
10 - gnd
