The problem might be the amp itself. I believe it's a separate unit from the radio in the dash.
Fuse 108 probably gives power to the entire circuit but you have power to the radio so that's probably fine. Fuse 112 is the audio modules battery supply but again if it were blown it would not power up the radio. It might be worth pulling them and looking them over just to make sure.
The ACM(audio control module) may be the problem too. I hear the ACM is quite expensive so if it turns out that's the issue then you might want to get a used one off Ebay that's configured the same as yours from the same submodel(S, SE, SEL, SES). Make sure it's not for the upgraded audio system if you have the standard radio. The same goes for the amp.

 

Thanks you, ill have a look at the amps tomorrow to make sure its not the fuse causing that.

 

This thread in post #6 shows you how to self test the ACM: (39) 2011 Focus SE speakers not working | Focus Fanatics Forum
This guy had a problem similar to yours on a MK2 and it was the ACM: (39) What is the ACM unit?: Radio, sync, bluetooth not working | Focus Fanatics Forum

 

Hi, i toke out the fuse which you referred to and put them back the other way as they were ohkay.
Gave up on fuse and sat in car, put the radio code and the speakers started working again.
Thank you for your help.

 

Hi, i toke out the fuse which you referred to and put them back the other way as they were ohkay. Gave up on fuse and sat in car, put the radio code and the speakers started working again. Thank you for your help.

I will have to try that out with mine as I have there same problem as well

 

Hello there, I am Also having the same problem, all speakers other that’s the tweeters stop… but mine will all be working some days and some days they will not, I’ve noticed it’s with the change of weather when it’s raining they stop so I’m guessing water might be getting in but have looked all through the door panels and all is bone dry.

 

Please let me know what the issue is as I have the same .

 

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I have just the sound coming from the tweeters , I don’t know the history of the car but the radio was locked . I unlocked it to hear just the tweeters….

 

I have the same problem on my 2009 model. Did anyone find the root cause for the main speakers not working yet?? My wife had the carpets washed and that's when we lost power to the main speakers only. Tweeters still working.

 

Ive looked through a lot of forums to do with this problem, a solution a couple of you have mentioned accidentally fixed it but was not the cause (checking fuses). The official fix for this is to disconnect negative from battery, ignition on, step on brake to drain electronic capacitors for a few seconds, ignition off then reconnect battery. Obviously this will mean inputting the radio code so have this to hand.

 

Yeah disconnect battery press breaks to drain static left over reconnect battery worked for me speakers came to life again