Bose amp output diagram

[Videoman123]

Hello members, does anyone know the pin out wiring diagram from the Bose amp? I decided to dump their crappy subwoofer and replace it with another (and powerful) unit but I will need to tap into the rear speaker wires + and - to accomplish this. Any help is appreciated. 2019 Rogue SV AWD.

[VStar650CL]

The front door speaker and A-pillar tweeter on each side are driven in parallel by the same output channel.

[Videoman123]

Thank you so much!

[VStar650CL]

[Videoman123]

Has anyone tried to get the audio signal from the Bose subwoofer plug itself and just run new power and ground for the new sub? It would save time running all new wires from the Bose amp.

[VStar650CL]

There's no reason that shouldn't work. Just make sure your new woof has a mute provision, and if it doesn't, use a relay to power it down when the Bose requests it (pin 31).

[Videoman123]

Correct, pin 31 is for remote turn on wire for the sub but I was referring to other audio signal input coming from the radio or amp and whether it’s High or Low signal. Have you heard about the Rockville Rock Ghost V2 spare tire sub? Looks impressive but I’m skeptical about its quality.

[VStar650CL]

The audio signal is regular AC, it's not like it's digital or anything. You might need to attenuate it if your new woof is a real boomer, but there's nothing special about any of the Bose outputs. It's a "dumb" amplifier, no smartwork and analog output on all channels.

I don't know anything about the Rockford, but Nissan does use some Rockford Fosgate stuff in the Titan and Kicks. I haven't noticed any quality issues in those.

[Rogue One]

Have you heard about the Rockville Rock Ghost V2 spare tire sub? Looks impressive but I’m skeptical about its quality.

Found online...
Q: Is Rockville audio a scam?
A: It’s legitimate, as in you give them money and they give you speakers. But the speakers aren’t any good.

Distributor Sued For False RMS Ratings
The suit claims that E-Distributors, Inc (also known as Rockville Audio, Rockville Pro Sound and Audiosavings) deceptively advertised RMS ratings, sometimes doubling the true rating, so that a speaker advertised as handling 600 watts RMS, had a true rating of only 300 watts.

The suit alleges that Rockville was aware of its false claims and caused consumers to blow out their speakers. The company also failed to accept blown speakers under its warranty policy, according to the plaintiffs in the suit filed September 16 in the US District Court for the Eastern District of NY by Travis Serafini, On Behalf of Himself and Others Similarly Situated.

Rockville Audio Reviews
104 reviews for Rockville Audio, 2.0 stars: “Poor quality products, terrible warranty handling. Stay away from Rockville Audio.

[Videoman123]

Yikes! I didn’t know all that stuff, I will find something else from a well known brand name.
Thank you for the info!!

[Videoman123]

What if I replaced the door speakers instead, has anyone else done that. What brand & model did you use and did you notice any difference in bass response? Thanks in advance.

[Rogue One]

There's a lengthy discussion on the 1st gen Rogue sound system, and a good deal of it rolls over to the 2nd gens.

Short version...
The sound system is designed by BOSE to fit Nissan's budget requirements. The bulk of the components are not made by BOSE.

Replacing the door speakers with a good grade name brand is generally the first step, and you should notice an improvement in the sound output.

Oh, in case you weren't aware, the impedance on a BOSE system is 4 ohms. Almost everyone else uses 6 or 8 ohms. Even the wire they use is thinner than standard, so keep that in mind as well.

[Videoman123]

Oh, I could swear the speakers were 2 ohms (according to Crutchfield) they said that anything higher than that would not be as sensitive and would result in lower sound output and quality.

[Rogue One]

Sorry, I had a senior moment. You're correct, BOSE is 2 ohm. Here's one of my old posts on the matter.

The BOSE speakers are 2ohm. This has been established here in the Rogue forum, as well as other forums in NICO. Plus if you do an online search you'll find it confirmed in other car and audio forums. Oh, and in case you missed it, the BOSE system utilizes a much thinner wire as well.

Mazda RX-8 forum:

Some of the Bose speakers are 2 ohm but the main 9 inch woofer is 0.5 ohm. Yes, half an ohm.

Replacing that speaker with a 4 ohm version will be about 12 dB less sensitive - i.e. completely wrong.

If you want to replace the speakers in the Bose, be prepared to have new amps as well.

BTW, the rear deck speakers are 2 ohms. You are correct that a 4 ohm speaker with a 4 ohm resistor in parallel will lower the load to 2 ohms so the amp will be doing about twice the power. However, all of the additional power will be simply dumped into the resistor - the four ohm speaker won't be any louder.

Now there are 2 ohm speakers you could use for the rear deck. Image Dynamics make some.

-Mr. Wigggles

Cadillac Forum:

If the car has the Bose sound system then the amps, preamp, and speakers are designed as one system - it all works one way: as designed.

You might get a 4 Ohm speaker to work if you jumped the terminals with a 10 watt wirewound 4 Ohm power resistor, effectively lowering the speaker resistance (not the impedance) to 2 Ohms. No sound quality guarantees, though - functioning impedance is a big factor in driver performance, not just simple resistance....... so now you're into passive crossover design....

[Videoman123]

I’m thinking of replacing the crappy non Bose door speakers but I’m having trouble finding 2 ohm replacements from well known brands. I found some from Skar and PowerBass but I never heard of either one and don’t trust them. Anyone have suggestions what I can use in my model year? 2019 Rogue SV.

[Rogue One]

These JBL speakers are 3 ohm, so you'll have to increase your volume setting a little higher to compensate, but I think they should work.
JBL GTO629 6.5"

[Videoman123]

Thank you, I will look them up!

[Videoman123]

Today I had some free time and pulled the subwoofer out of my 2019 Rogue and took it apart to see exactly what’s in it. I took a few pics but I don’t know how to post them. Anyway, it turns out it is a “Passive” or non-amplified sub with two speakers with large and heavy magnets. They are rated at 2 ohm each but power rating is not stated. The plug connector has four wires, 2 Red and 2 Green which connect to both speakers. Therefore, I believe the simplest solution in increasing power would be to cut off the plug and connect those wires as high lever “Speaker” inputs to a second amplifier since the “Bose” amp appears to be weak in watts going out to the subwoofer. If someone can tell me how to post my pics, I will. Thank you!

[Videoman123]

Does anyone know the approximate wattage being sent by the amplifier to the passive Bose subwoofer?

[VStar650CL]

It's a 12V rail (+/- 6V push-pull), so a 2 ohm speaker will output (12/2)*12*0.707 = 50.9W maximum. The Bose probably can't push it to the rail at very low frequencies (that generates a crapload of heat) but it probably comes close. Nissan doesn't publish specs for stuff like that, but you can test it with an AC voltmeter, just measure the peak voltage using a bass test signal into the Aux port with the volume cranked all the way up. The AC meter reading will already be compensated for RMS, so whatever you measure, (N/2)*N is your RMS watts.

To post pics here, tag the "Full Editor & Preview" button at the bottom of the entry window. On that screen, below the "Submit" button you'll see two tabs, "Options" and "Attachments". Tag the Attachments tab and then "Add File". You'll get a popup to select your picture. After it uploads, put the cursor in the entry window where you want the pic to appear and press "Place Inline". There's a size limit on pics and I'm not sure what it is, but I usually photoshop mine to about 1500 pixels on the long axis. That seems to be a good compromise between size and viewability.

[Videoman123]

If I had to guess, I would say it the subwoofer can’t be over 50 Watts at best, that’s why I think connecting a second amplifier to the speaker connector will solve the problem and give me the additional impact I’m not getting. The only question is where to mount the amp since the 2nd row seats have a riser.

[VStar650CL]

If you're ambitious then there's actually quite a lot of room to shoehorn stuff vertically into the walls around the rear wheel wells. The only problem is that the lower cargo panels are a bit of a PITA to remove, so it can be problematic if you ever need to replace or service anything. For an amplifier you might also need to arrange a vent or fan, since convective cooling won't work very well in there.

[Videoman123]

I presume you are referring to the plastic panels in the cargo area? I don’t plan on removing anything I can’t put back together just to mount an amplifier, not to mention adding vents or fans. I don’t really care if the new amplifier is visible or not but it definitely needs one to sound better.

[VStar650CL]

Then your choices are pretty limited in the back. There is a spot under the inboard side of the passenger seat next to the Bose, but if you have a sunroof, you'll need to make a frame similar to what the Bose sits on to keep the amp off the floor. That whole area will flood from a clogged roof drain.