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2012 2.5i Premium CVT
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I'm talking about a Gen 4 Outback. Mine has the Subaru Tweeter kit in the dash with stock speakers in all the doors. I have an aftermarket head unit which has helped with the overall sound. Quite honestly, since my *loud stereo* days are essentially over, I am quite satisfied with head unit power, stock speakers, and my aftermarket under-seat subwoofer.

I sometimes want to put better speakers in, but 99% of the time I don't listen at levels that would even matter.

Couple questions:
  1. How are the dash tweeters wired in relation to the front door speakers?
  2. Has anybody ever added coaxial speakers in addition to the stock tweeters?
  3. Is this a terrible idea?
The reason I ask is that if it would be any kind of improvement, it would be very easy and relatively inexpensive to pop in some coaxials in all 4 doors and call it a day.

But if it's going to be crap, then installing a set of proper components up front will cost more and require more labor on my part. I tend to favor quick and easy projects these days...

Any comments would be appreciated.
 

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I'm talking about a Gen 4 Outback. Mine has the Subaru Tweeter kit in the dash with stock speakers in all the doors. I have an aftermarket head unit which has helped with the overall sound. Quite honestly, since my loud stereo days are essentially over, I am quite satisfied with head unit power, stock speakers, and my aftermarket under-seat subwoofer.

I sometimes want to put better speakers in, but 99% of the time I don't listen at levels that would even matter.

Couple questions:
  1. How are the dash tweeters wired in relation to the front door speakers?
  2. Has anybody ever added coaxial speakers in addition to the stock tweeters?
  3. Is this a terrible idea?
The reason I ask is that if it would be any kind of improvement, it would be very easy and relatively inexpensive to pop in some coaxials in all 4 doors and call it a day.

But if it's going to be crap, then installing a set of proper components up front will cost more and require more labor on my part. I tend to favor quick and easy projects these days...

Any comments would be appreciated.
Hi, Have a 2016 Outback and have thought to do the same with some Alpine S series 6x9 coax while retaining the corner dash tweeters and base model OEM head unit. I felt the in dash tweeters were sounding OK and suspected they had a larger range than normal tweeters. Trouble: On the speakers box, the inside flap, it says under SPECS "Warning, this product contains a high performance tweeter. If there is a tweeter already installed in your car then you must disconnect it's terminals. If you leave the original tweeter connected and connect this product in parallel, then a fault may develop in this product so you are strongly recommended not to do so".
The guys at the shop told me the OEM tweeters were in parallel.
So, I will now be going back to buy the splits just to be safe. Another thing was the shop told me I could just replace the dash tweeter with the split but I thought I might have to run a wire from the woofer thinking the crossover might be in the woofer. More complicated than I thought. The shop guys (specialists) were not very helpful. I think they wanted to install it themselves. No wiring harnesses or spacers or anything there available in the shop. Any info appreciated.
Sceptic.
 

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Hi, Have a 2016 Outback and have thought to do the same with some Alpine S series 6x9 coax while retaining the corner dash tweeters and base model OEM head unit. I felt the in dash tweeters were sounding OK and suspected they had a larger range than normal tweeters. Trouble: On the speakers box, the inside flap, it says under SPECS "Warning, this product contains a high performance tweeter. If there is a tweeter already installed in your car then you must disconnect it's terminals. If you leave the original tweeter connected and connect this product in parallel, then a fault may develop in this product so you are strongly recommended not to do so".
The guys at the shop told me the OEM tweeters were in parallel.
So, I will now be going back to buy the splits just to be safe. Another thing was the shop told me I could just replace the dash tweeter with the split but I thought I might have to run a wire from the woofer thinking the crossover might be in the woofer. More complicated than I thought. The shop guys (specialists) were not very helpful. I think they wanted to install it themselves. No wiring harnesses or spacers or anything there available in the shop. Any info appreciated.
Sceptic.
ALSO, Anyone know about the crossover from the OEM base head unit for the gen 5 outback? The Alpine splits have a in line capacitor for the tweeters and one on the woofer. Don't want to find I have doubled up on these with the oem wiring.
 

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Hi, Have a 2016 Outback and have thought to do the same with some Alpine S series 6x9 coax while retaining the corner dash tweeters and base model OEM head unit. I felt the in dash tweeters were sounding OK and suspected they had a larger range than normal tweeters. Trouble: On the speakers box, the inside flap, it says under SPECS "Warning, this product contains a high performance tweeter. If there is a tweeter already installed in your car then you must disconnect it's terminals. If you leave the original tweeter connected and connect this product in parallel, then a fault may develop in this product so you are strongly recommended not to do so".
The guys at the shop told me the OEM tweeters were in parallel.
So, I will now be going back to buy the splits just to be safe. Another thing was the shop told me I could just replace the dash tweeter with the split but I thought I might have to run a wire from the woofer thinking the crossover might be in the woofer. More complicated than I thought. The shop guys (specialists) were not very helpful. I think they wanted to install it themselves. No wiring harnesses or spacers or anything there available in the shop. Any info appreciated.
Sceptic.
You're resurrecting a thread from 2013.

If you consult Crutchfield's website, enter your car's information, and select a 6x9 for the front doors, you can find out which wiring harness adapter (and mounting adapter) you need.

I have a 2020 Outback and I think the wiring is the same. The dash tweeters are parallel to the front door speakers. The dash tweeters in your car are small paper cone speakers, in mine they were small plastic tweeters, but otherwise the wiring is the same I believe. Stock door speakers are 4 ohm, as is the tweeter. The stock tweeter has a capacitor for high-pass.

I installed Alpine R series 6x9 speakers in my Outback front doors using the crutchfield recommended harnesses and mounting adapters with no problems, and they worked fine with the stock tweeters.

I did change the stock tweeters though, to the Subaru H631SFJ101 which I believe will also fit in your car. This also has a capacitor attached.
 

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You're resurrecting a thread from 2013.

If you consult Crutchfield's website, enter your car's information, and select a 6x9 for the front doors, you can find out which wiring harness adapter (and mounting adapter) you need.

I have a 2020 Outback and I think the wiring is the same. The dash tweeters are parallel to the front door speakers. The dash tweeters in your car are small paper cone speakers, in mine they were small plastic tweeters, but otherwise the wiring is the same I believe. Stock door speakers are 4 ohm, as is the tweeter. The stock tweeter has a capacitor for high-pass.

I installed Alpine R series 6x9 speakers in my Outback front doors using the crutchfield recommended harnesses and mounting adapters with no problems, and they worked fine with the stock tweeters.

I did change the stock tweeters though, to the Subaru H631SFJ101 which I believe will also fit in your car. This also has a capacitor attached.
Thanks for that. Yes been on the Crutchfield site. About to pull the tweeters, hopefully the caps are attached (Jap made in Aus) and not somewhere hidden and I can simply swap with the Alpine capacitor added. Wondered if two caps in a row would matter anyway as long as the Alpine one was last in line. Don't think so. I think the reason for the warning on the box is by running two tweeters in parallel you drop the impedance.
 

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Thanks for that. Yes been on the Crutchfield site. About to pull the tweeters, hopefully the caps are attached (Jap made in Aus) and not somewhere hidden and I can simply swap with the Alpine capacitor added. Wondered if two caps in a row would matter anyway as long as the Alpine one was last in line. Don't think so. I think the reason for the warning on the box is by running two tweeters in parallel you drop the impedance.
The thing is, the original speaker system was one four ohm full range driver in parallel with a 4 ohm tweeter.

Swapping a coaxial in for the full range doesn't significantly mess with impedance - the coaxial tweeter isn't being hooked up in parallel with the coaxial's tweeter separately, and even if it were, it wouldn't damage anything. The stock amp is designed to run a parallel 4 ohm tweeter (high pass) with the full range 4 ohm door speaker.
 

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In that case why the warning to disconnect the OEM tweeter on the Alpine box? Cap was on the OEM tweeter so not an issue. Just need to mount the new one. Probably on some 1/4 mdf. Thanks for the input.
 

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I think it's merely a poor translation from Japanese. If the OEM tweeter is installed parallel to the Alpine coaxial, it's true that the system won't sound the same as Alpine intended the speakers to perform, as the extra tweeter will throw off the sound balance, however, even Subaru's own speaker upgrades swap the full-range door speakers for coaxials, and include dash tweeters without removing them.
 

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2017 Outback Premium, '08 Volvo V70
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I have added co axials to all four doors along with a Pioneer GM-D1004 400W 4-Channel to my 2017 OB Premium with a non-HK Subaru radio. My goal was to get richer sound at low volume and I think I succeeded.
The factory radio probably outputs 7 to 10 watts and isn't capable of creating deep bass at low volume.

I used Kenwood KFC-6966S 4 ohm in the front doors and PIONEER TS-A1676R 4 OHM in the rear. The OEM dash speakers have not been replaced and I didn't change any crossover devices.

Is the sound dramatically changed? No, probably not. But I had fun doing it and I can hear richer sound at volume level 10 - 12.
 
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