S4 (B9 Platform) Discussion Discussion forum for the B9 Audi S4 produced from 2016-

[Advice Required] Trunk Subwoofer Replacement Using Stock Amp

Thread Tools
 
Search this Thread
 
Old 05-08-2024, 03:38 PM
  #1  
AudiWorld Junior Member
Thread Starter
 
apprehends's Avatar
 
Join Date: Apr 2024
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default [Advice Required] Trunk Subwoofer Replacement Using Stock Amp

Hey guys,

My B&O sub has decided to leave the chat.

I am replacing it with the Ampire Bold 6.5 as it was the easiest to get in to Australia out of all I could locate on @Bobby Kinstle 's spreadsheet. (Would be awesome if he is the man to help here).

I am just wondering how I go about wiring it back in to the stock amp if I wire it the same as the current woofer that is in there, or if I only use one input and wire parallel?

If I could just get told what colours to plug where that would be awesome.

Cheers in advance.
Old 05-08-2024, 03:40 PM
  #2  
AudiWorld Junior Member
Thread Starter
 
apprehends's Avatar
 
Join Date: Apr 2024
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by apprehends
I am just wondering how I go about wiring it back in to the stock amp if I wire it the same as the current woofer that is in there, or if I only use one input and wire parallel?.
I meant wire in series? I believe thats where you go from one positive to the other negative?
Old 05-08-2024, 09:47 PM
  #3  
AudiWorld Uber User
 
Bobby Kinstle's Avatar
 
Join Date: Mar 2000
Location: Bay Area, CA
Posts: 38,782
Received 279 Likes on 213 Posts
Default

THe stock subwoofer has two amplifiers one for each voice coil. It can drive 4 ohms each, so buy a 4 ohm DVC subwoofer with the highest possible efficiency. The ampire has very low efficiency and you are never going to get satisfactory output from the factory sub. Looks for something with an efficiency closer to 90dB like the Kicker Comp C10
Old 05-08-2024, 09:52 PM
  #4  
AudiWorld Junior Member
Thread Starter
 
apprehends's Avatar
 
Join Date: Apr 2024
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Bobby Kinstle
THe stock subwoofer has two amplifiers one for each voice coil. It can drive 4 ohms each, so buy a 4 ohm DVC subwoofer with the highest possible efficiency. The ampire has very low efficiency and you are never going to get satisfactory output from the factory sub. Looks for something with an efficiency closer to 90dB like the Kicker Comp C10
Is the kicker comp c10 a 10"? So only suiting the rear deck.

I have an avant so only the trunk one under the spare wheel.
Old 05-09-2024, 04:08 AM
  #5  
AudiWorld Junior Member
 
pleedell's Avatar
 
Join Date: Dec 2003
Posts: 27
Received 8 Likes on 7 Posts
Default

Comp C10 works fine with stock amp/wiring, it tightens up the sound quite abit compared to stock (thx apprehends for the advice a few years ago ).

But this is my experience on a sedan with free air installation, not sure if that assessment would change with a wagon however.
Old 05-09-2024, 05:03 AM
  #6  
AudiWorld Junior Member
Thread Starter
 
apprehends's Avatar
 
Join Date: Apr 2024
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by pleedell
Comp C10 works fine with stock amp/wiring, it tightens up the sound quite abit compared to stock (thx apprehends for the advice a few years ago ).

But this is my experience on a sedan with free air installation, not sure if that assessment would change with a wagon however.
I believe you may have credited the wrong person.

Yeah I can't go Comp C10 for 2 reasons:
1. I have a wagon...
2. The only way to get them easily in Australia is to order one already installed in a box and remove it.
Old 05-09-2024, 10:21 PM
  #7  
AudiWorld Uber User
 
Bobby Kinstle's Avatar
 
Join Date: Mar 2000
Location: Bay Area, CA
Posts: 38,782
Received 279 Likes on 213 Posts
Default

Unfortunately there aren't a lot of good options for the wagon unless you are willing to have a sub box. None of the 6.5" subwoofer drivers are high enough efficiency to deliver a good output from the factory amp.
Old 05-10-2024, 01:17 AM
  #8  
AudiWorld Junior Member
Thread Starter
 
apprehends's Avatar
 
Join Date: Apr 2024
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Bobby Kinstle
Unfortunately there aren't a lot of good options for the wagon unless you are willing to have a sub box. None of the 6.5" subwoofer drivers are high enough efficiency to deliver a good output from the factory amp.
@Bobby Kinstle
I'm not concerned about it being a good option as long as it's comparable to the stock as my stock one **** itself.

I pretty much just want to wire the Ampire one, in the stock box, regardless of performance and was wondering what wires to run where on the sub.

I was doing some testing on the wiring tonight and for some reason the orange and yellow wires don't have any sort of power running through them, however, the green and black do.

I will be having a custom sub and aftermarket amp installed at some point, but I need a temp solution just to get some sort of subwoofer back in the car.

Last edited by apprehends; 05-10-2024 at 01:19 AM.
Old 05-12-2024, 04:04 PM
  #9  
AudiWorld Uber User
 
Bobby Kinstle's Avatar
 
Join Date: Mar 2000
Location: Bay Area, CA
Posts: 38,782
Received 279 Likes on 213 Posts
Default

OK let me put it in clearer terms, the ampire woofer output is half as loud as the stock sub at the same power level.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Co pilot
Audi A5 / S5 / RS5 Coupe & Cabrio (B8)
3
05-01-2011 04:29 PM
scooter44
A4 (B5 Platform) Discussion
15
02-11-2005 07:09 AM
needquattro
A4 (B6 Platform) Discussion
5
08-20-2004 11:49 AM
T. Avant
A4 (B6 Platform) Discussion
4
03-07-2004 03:31 AM
Spooling_A4
Audio, Video and Security Discussion
11
04-18-2003 04:54 AM



Quick Reply: [Advice Required] Trunk Subwoofer Replacement Using Stock Amp



All times are GMT -8. The time now is 12:48 PM.