Other S60 Problem: - USA Spec Ipod Adapter

Talon · Jun 18th, 2007, 17:11

Recently installed one of these things....realy simple to do and would recomend it to anyone.

One thing I noticed is when every you switch the car on, the speakers make a sound, like a small spike of current was fed into them. I know it is coming fomr the ipod adapter becasue it only happens when the stero is in CD changer mode not on radio or CD.

Wondering if anyone else with a USA spec IPOD adapter experianced the same issue and if thats normal.

Other than that I can't fault the device, its great.

s60.i@n · Jun 18th, 2007, 17:35

A vague stab in the dark would be that the ipod adapter is powered from the switched 12v line, not the permanent 12v line?

Talon · Jun 18th, 2007, 17:47

I connected it to the red fat wire that goes to the back of the stereo, is that correct one?

s60.i@n · Jun 18th, 2007, 20:38

Red would appear to be perm 12v, though the ISO standard is red = switched, yellow = permanent to keep you on your toes

Where is the ground connected to ?

b1g1an · Jun 18th, 2007, 22:50

Mine doesn't do it, wired to red and brown.

Talon · Jun 19th, 2007, 07:33

Quote:

Originally Posted by s60.i@n

Red would appear to be perm 12v, though the ISO standard is red = switched, yellow = permanent to keep you on your toes

Where is the ground connected to ?

Ground is connected to the brown wire, I wonder if there is a fault with the actual unit, although, during playback you don't get any noise. Also if the unit was connected to the permenent 12 V will it not always stay switched on?

b1g1an · Jun 19th, 2007, 09:00

I wondered about that but I think the actual interface is switched through the DIN plug in the headunit, the iPod charging bypasses this so it can charge while the headunit is off. Could be completely wrong though!

D5 Monkey · Jun 19th, 2007, 09:13

Surely it's just a noise spike when you turn the ignition on!, probably the filtering on the Ipod adaptor 5v/0v is not as broad as the filtering on the HU. Therefore low freq noise is picked up on the adaptor and fed into the HU on the serial input and amplified to the speaker. Can't see why it's anything to worry about.

Talon · Jun 21st, 2007, 15:26

Quote:

Originally Posted by D5 _Monkey

Therefore low freq noise is picked up on the adaptor and fed into the HU on the serial input and amplified to the speaker. Can't see why it's anything to worry about.

But aren't those spikes harmful for the speakers, won't they get damaged?

Jun 18th, 2007, 17:11	#1
Talon Volvic Driver Last Online: Jan 8th, 2014 14:56 Join Date: Jun 2006 Location: colombo	USA Spec Ipod Adapter Recently installed one of these things....realy simple to do and would recomend it to anyone. One thing I noticed is when every you switch the car on, the speakers make a sound, like a small spike of current was fed into them. I know it is coming fomr the ipod adapter becasue it only happens when the stero is in CD changer mode not on radio or CD. Wondering if anyone else with a USA spec IPOD adapter experianced the same issue and if thats normal. Other than that I can't fault the device, its great.

Jun 19th, 2007, 09:13	#8
D5 Monkey Gone and forgotten Last Online: May 29th, 2018 11:58 Join Date: Dec 2004 Location: The great north View Photos By: D5 Monkey	Surely it's just a noise spike when you turn the ignition on!, probably the filtering on the Ipod adaptor 5v/0v is not as broad as the filtering on the HU. Therefore low freq noise is picked up on the adaptor and fed into the HU on the serial input and amplified to the speaker. Can't see why it's anything to worry about. __________________ _____________________________________________ My Photos on Flickr

Jun 18th, 2007, 17:35	#2
s60.i@n Member Last Online: Jul 29th, 2023 09:26 Join Date: Aug 2006 Location: Hythe	A vague stab in the dark would be that the ipod adapter is powered from the switched 12v line, not the permanent 12v line?

Jun 18th, 2007, 17:47	#3
Talon Volvic Driver Last Online: Jan 8th, 2014 14:56 Join Date: Jun 2006 Location: colombo	I connected it to the red fat wire that goes to the back of the stereo, is that correct one?

Jun 18th, 2007, 20:38	#4
s60.i@n Member Last Online: Jul 29th, 2023 09:26 Join Date: Aug 2006 Location: Hythe	Red would appear to be perm 12v, though the ISO standard is red = switched, yellow = permanent to keep you on your toes Where is the ground connected to ?

Jun 18th, 2007, 22:50	#5
b1g1an Senior Member Last Online: Nov 16th, 2014 23:12 Join Date: Mar 2006 Location: Norwich	Mine doesn't do it, wired to red and brown.

Jun 19th, 2007, 09:00	#7
b1g1an Senior Member Last Online: Nov 16th, 2014 23:12 Join Date: Mar 2006 Location: Norwich	I wondered about that but I think the actual interface is switched through the DIN plug in the headunit, the iPod charging bypasses this so it can charge while the headunit is off. Could be completely wrong though!

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