Output volume using dock cable.

[ryannazaretian]

Just sent this feedback request to http://www.apple.com/feedback/iphone.html

I just switched over from the 1st Generation iPod Touch to the iPhone 4. I also have iPod/iPhone integration in my car.

I noticed with the new iPhone, that the volume on my radio must be turned up much higher than was required with the iPod touch. The problem that this causes is excessive electrical noise from the car, plus a lot more noise from the radio circuitry in the iPhone. On top of that, if I switch over to radio without changing the volume, I get blasted.

I believe if Apple just bumped up the volume a bit for the dock connector, that this issue would be alleviated.

To give you an idea... I have a 2006 Mazda3 2.0L. I installed a Neo ProLink PODMAZ-R2V1. With my iPod touch, I usually listened to music on 15/40. With the iPhone, I have to crank it up to about 28/40 to match the iPod Touch.

Increasing the dock volume output will quiet down the electrical interference shared between my car and the iPhone itself as well as keep the volume level between switching to the radio and the iPhone.

I know the volume varies from car to car, but the amount of electrical noise heard from the iPhone should be a clear indication that the volume is set too low.

Just a little curious if anyone else has noticed this? I know I'm taking quite a big leap from a 1st Gen iPod Touch to a 4th Gen iPhone, but this still shouldn't be an issue.

 

[ryannazaretian]

Bump?

I noticed all around the volume is pretty low. I've seen that mentioned in a few places. I find it hard to hear people I'm talking to unless I crank it up all the way.

 

[TechJunky]

I'm having what seems to be the same issue, only I'm using the headphones output to an Aux input in my car (Blitzsafe adapter). When the music is low, or between songs, there is a lot of hiss and interference noise. It happens on both mine and my wife's iphone4, but does not happen on our older 3G's, on either 3.2 or 4.0.

 

[Reefbone]

I'm having what seems to be the same issue, only I'm using the headphones output to an Aux input in my car (Blitzsafe adapter). When the music is low, or between songs, there is a lot of hiss and interference noise. It happens on both mine and my wife's iphone4, but does not happen on our older 3G's, on either 3.2 or 4.0.

I called Blitzsafe on this and the owner did did some testing but they couldn't recreate it. They said I was the first to report this. I actually got a new phone thinking my unit was the issue but I got the same. The output is such that I have to have the iP4 turned all the way up or the volume falls off to nothing after about 85%. also way too much noise. I tested a 3G and 3GS and they don't have this issue at clea... crystal clear.

What helps is turning the EQ off and also turning off the Sound Check. Helps but does not fix it I should say

 

[TechJunky]

I called Blitzsafe on this and the owner did did some testing but they couldn't recreate it. They said I was the first to report this. I actually got a new phone thinking my unit was the issue but I got the same. The output is such that I have to have the iP4 turned all the way up or the volume falls off to nothing after about 85%. also way too much noise. I tested a 3G and 3GS and they don't have this issue at clea... crystal clear.

What helps is turning the EQ off and also turning off the Sound Check. Helps but does not fix it I should say

Cool. Yeh, I've got both EQ & SC turned off, but the hiss is still insane. It sounds like I'm listening to a cassette. It has to be something to do with the Blitzsafe receiving a lower signal. This combined with the ip4 sending a slightly lower signal makes the hiss audible. I've confirmed it also happens on my friend's ip4 on a different Blitzsafe adapter, different car. I've seen reports of different aftermarket headunits that also have the hiss only with the ip4. But I CANNOT reproduce this issue on my wife's Alpine headunit with a straight aux input through V-link.

 

[Reefbone]

Cool. Yeh, I've got both EQ & SC turned off, but the hiss is still insane. It sounds like I'm listening to a cassette. It has to be something to do with the Blitzsafe receiving a lower signal. This combined with the ip4 sending a slightly lower signal makes the hiss audible. I've confirmed it also happens on my friend's ip4 on a different Blitzsafe adapter, different car. I've seen reports of different aftermarket headunits that also have the hiss only with the ip4. But I CANNOT reproduce this issue on my wife's Alpine headunit with a straight aux input through V-link.

Are you using the mini jack or the dock connector (I'm using the mini plug). I think (maybe) by going into General--> reset --> reset all settings that the hiss in significantly lower. This doesn't lose any data... you just lose some preferences that get set back to default.