Adding a subwoofer to BOSE speed6 - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 2 (permalink) Old 07-20-2018, 06:02 AM Thread Starter
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Adding a subwoofer to BOSE speed6

Hi,


I've been reading and reading and reading and I still don't understand some things about the BOSE system. I have the BOSE sound system and I just want to add an amplifier and a subwoofer to my car.



So far I've gathered that you can't use the signal going to the BOSE sub amp because it's very weak and it rolls-off as you increase volume on the head unit.


So my questions:


1. Can I use the front left and front right signals coming from the head unit to the BOSE amp under the passenger seat? Or are they weak as well?


2. Or should I use the amplified signal output (from BOSE under the seat) that's going to the speakers with a LOC? And also, my amp already has high-level inputs, do I really need a line output converter?




Or, in other words: What is the best way to add an amp and a sub to a BOSE system?

Last edited by blackmica; 07-20-2018 at 06:04 AM.
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post #2 of 2 (permalink) Old 07-20-2018, 09:57 AM Thread Starter
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So after A LOT of researching later, turns out, the best way to add a sub to a stock BOSE system is:


1. Remove BOSE sub and amp assembly on the rear deck.
2. Run power to aftermarket amp from battery (of course).
3. Use the BOSE sub amp +12V wire for the "Remote" connection of the aftermarket amp.

4. Get signal for the aftermarket amp from the front left and front right speakers (tap the wires) BEFORE they enter the BOSE amp under the passenger seat, because the signal is full-range (the signal is not very strong, but it's very usable) and run it to the RCA inputs on the aftermarket amp.
5. Connect your aftermarket sub to the aftermarket amp and enjoy your music.


I hope this helps someone along the way.
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