What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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R3cord303

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I was wondering why the spacers I ordered had yet to arrive in the mail. Turns out they don't actually stock the spacers. So when you order them from Bora, you get put in the que at the back of the line, and then they have to machine them, then they get shipped. Damnit. So I ordererd them on the 26th, and they will be done being made around the 18th, then 3-5 day shipping. Lotta time for a set of four 1/4" spacers... :/
 

The_Burban

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R3cord303

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I added a subwoofer so I just needed to disable the Bose ANC, but otherwise yes works great, actually disabling the ANC woke the system up and made it sound better.
Wait- how do you disable the active noise canceling? and can you retain the factory bose speakers with an aftermarket head unit?
 

iamdub

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I didn’t use any hose clamps on my catch can install. All of the barb fittings seems super duper snug on the 3/8 hose- and the OE pcv system doesn’t use any?

There's no real pressure in there so a tight fit will be fine. I think two of my connections are "press fit". It's a cleaner look, anyway.
 

iamdub

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Wait- how do you disable the active noise canceling? and can you retain the factory bose speakers with an aftermarket head unit?

I know it's something super easy like unplugging a mic or something. Wes will fill you in but my main reason for replying is to say you can retain the Bose system with an aftermarket HU. The HU, stock or aftermarket, sends a signal to the Bose amp and the Bose amp does the rest. It's a little more complicated than that with the warning tones, etc., but that's the gist. This is why our rigs need specific interfaces/adapters depending on the features we have. As far as running the Bose speakers directly off an aftermarket HU, not likely. They have odd impedences (2.x, I think) and most HUs require 4 ohm. If you were so inclined, you could run the Bose speakers off an aftermarket amp if it's stable at the ohm load.

I, for one, think the Bose system sounds pretty good for a factory setup. I have a Pioneer HU and the extra sound adjustment from the 13-band EQ let me tweak it more to my liking. I still plan to swap out the speakers and run them on Alpine amps, but I'm no hurry because I'm content enough for now.
 

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