2006 Yukon xl Denali Bose y91

[Slow yukon]

Hey so I have a 2006 gmc Yukon xl Denali with the Bose premium y91. Stock everything. I was listening to music with the cassette aux. and it was very loud and I could go max volume and no distortion. So anyways I wanted to upgrade to touchscreen
So I got a Sony xav3600 and the crux swrgm-48 because it workes with the y91 system. And everything works steering wheel controls etc. but I noticed it wasn’t as loud as the stock radio. And not as clear. The loudness on the stock radio blows it away 2x. And the max I can go on the Sony was 40/50 volume. Yes I checked the equalizer and meat the setting and even had everything flat and still nothing. So I was wondering maybe it was the harness. I was thinking of trying the pac rp5-gm11. Any thoughts of everything I just said thanks in advanced.

 

[Joseph Garcia]

In all probability, your volume issue is associated with a speaker-head unit impedance mismatch. (Your crux swrgm-48 interface unit has nothing to do with this impedance mismatch issue). This is a common issue with partial changes to a factory Bose system. Your aftermarket head unit is looking for speaker impedances between 4 and 8 Ohms, and your Bose speakers have impedances in the neighborhood of 2 Ohms. As such, your Bose speakers need about twice the amperage delivered for the same sound volume, compared to a 4 Ohm speaker, and your aftermarket head unit is designed to deliver at its design speaker impedance criteria. This impedance mismatch also degrades the sound quality itself coming out of the speakers.

To resolve this, you should consider replacing your speakers with 4 Ohm aftermarket speakers, and eliminate the impedance mismatch. I eliminated my entire Bose system and replaced with with aftermarket components, primarily because I am not a big fan of the Bose sound (personal preference), and I did not want to create any impedance mismatch issues.

 

[Slow yukon]

In all probability, your volume issue is associated with a speaker-head unit impedance mismatch. (Your crux swrgm-48 interface unit has nothing to do with this impedance mismatch issue). This is a common issue with partial changes to a factory Bose system. Your aftermarket head unit is looking for speaker impedances between 4 and 8 Ohms, and your Bose speakers have impedances in the neighborhood of 2 Ohms. As such, your Bose speakers need about twice the amperage delivered for the same sound volume, compared to a 4 Ohm speaker, and your aftermarket head unit is designed to deliver at its design speaker impedance criteria. This impedance mismatch also degrades the sound quality itself coming out of the speakers.

To resolve this, you should consider replacing your speakers with 4 Ohm aftermarket speakers, and eliminate the impedance mismatch. I eliminated my entire Bose system and replaced with with aftermarket components, primarily because I am not a big fan of the Bose sound (personal preference), and I did not want to create any impedance mismatch issues.

I see what you’re saying but the Bose amp is pushing the speakers not the head unit.

 

[Joseph Garcia]

I see what you’re saying but the Bose amp is pushing the speakers not the head unit.

OK, I see your point.

 

[S33k3r]

I see what you’re saying but the Bose amp is pushing the speakers not the head unit.

There is still an impedance mismatch. From what you have described, it is between the head unit and the amplifier.