I have read many posts and searched and found no definate answer on this yet. HELP

The Bose unit uses separate amps... so does it use a standard line output voltage?

Also is there a remote turn-on signal from the stock HU?

Any help is cool.

 

Somebodies got to have a manual they can quote to me on the QT. I wont tell and it could save me alot of work. Make a deal--- PDF or JPG the Harness connector pages to me and I will let you in on my totaly cool, very unique dual 8" sub box.

Yeah BAAABEEEE!

 

The Bose head unit does have acceptable line output levels and remote turn on for connection to an after-market amp. I have no idea which wires they are, because my installer did all the signal tracing.

-Plucky

 

The Bose uses speaker level, NOT line level outputs. You have to use line out convertors (LOC's) to change the speaker level outputs to RCA's. If you do this, you may be disappointed, as the Z is noisy, and the Clarion/Bose head unit has a very flat and non dynamic output, even with high quality locs. As far as the remote turn on wire goes, its just a constant 12v that is on whenever the ignition is on...poor design. So, the Bose amps are on whether the radio is on or not.

I was so disappointed with the factory Blose hu, that I pulled it out and replaced it with an aftermarket...I am VERY happy now !

 

I believe you are mistaken. Although I did not install my amp myself, I watched the entire install. No line-level converters were necessary because the signal level from the Bose HU was within the acceptable range. Yes, the 12V for the amp does come on with the car, but that is no big deal to me. Sut some people may want to be able to shut off the amp(s) while the car is on, so I see your point there.

Yes, the Bose HU is very flat. If you really want to keep the stock look and the 6 disk in-dash changer, you can correct the problem with a good eq.

-Plucky

 

If you want to use aftermarket equipment like amps and signal processors, which require RCA inputs (low level), you still have to use LOCs. How did do you convert the Bose speaker lines to RCA's for inputs to your aftermarket equipment, without a a line-out convertor (LOC) ??? I can't see how this is possible without locs...but I am curious. Maybe you missed that portion of the install as this is a VERY common practice.

IF your amp accepts high level (speaker) inputs, then the amp is doing the high to low level conversion internally and a seperate LOC is not required, but all amps either require a high-level speaker input or low level RCA input...

 

So am I to understand the system HU puts out wattage and then is reamped like a crappy radio shack system from the '70s?

or is there .5 to 12 volts of pre amp level in the leads as the pluckeyD says.

Damn- Still confused.

I am gonna rip it apart this week end and trace leads.

 

The Bose head unit does NOT have speaker level outputs, and does not require LOC's (line level converters).
It has a line level differential output. To properly interface this Bose unit to aftermarket amps takes a special converter, made by companies like PAC, PIE, and Soundgate. You can convert the outputs to RCA's and connect them to your amps, but you will also get TONS of system noise. Check out the above companies websites for more info on these converters.

 

Jeffa...YOU ARE WRONG !

I have been down this road, and I even resorted to speaking with Nissan about it. This was after I got some bad info, concerning the differential outputs and spent a ton of money on expensive Soundgate differential LOCs. The Bose HU in the Z uses speaker level outputs, and not differential ouputs ! Standard locs must be used to interface to the Bose HU...

 

onecoolee:
Hate to burst your bubble...but you are the one who is wrong.

Not to get into a pissing match, but I work for Clarion, and have the service manual for the Bose HU in front of me. This unit does NOT have speaker level outputs. It has a two volt line level output, which REQUIRES a differential line adapter be used to interface this output to a standard aftermarket amplifier.

Nissan has no clue as to how this unit works...they call us when they have problems/questions.

Don't believe me? Call PAC, PIE or Soundgate and see what they have to say about this unit.

So, who ever gave you the information about the Bose unit in the Z is WRONG!

 

OK, not to add more fuel to this fire, but I still know I am right...

First of all, who are standard loc's the only things that work to convert the Bose output to line level ?

And second of all, why when I measure the output from the head unit, is there no DC bias ? All differentially output HU's have at least .5 Volts of bias on the + speaker lines. Furthermore, my Soundgate differential LOC's did not work at all. So, I spoke with Nissan, they talked to Bose, and told me that the Bose HU in the Z uses standard speaker level outputs. So, in the process of my upgrades, I switched from the high dollar soundgate differnetial locs, which did not work at all, to cheap-o standard locs, and everything worked great. Let me repeat, I did not use differential output locs, STANDARD ONES WORKED FINE ! How is this possible if that head unit has Differential ouputs...please expalin this one to me, oh wise one...

Nevertheless, I was still extremely disappointed with the sound quality of this so called "Premium" Head unit, so I ripped it out, and switched to a Pioneer Premier, and the sound is great now.

I am not sure why your documentation shows this, but it is WRONG, and the above information proves that...I do know that some Bose systems have differential outputs but the Z Bose unit DOES NOT...no I am not looking to get flamed, but I will argue until I am blue in the face when I know I'm right...

so, sorry to burst your bubble or blow up your Zeppelin or whatever jeffa...you are incorrect.

 

jeffa...one more thing. If indeed you do work for Clarion...please get with your engineering staff, and teach them how to design a sub and subwoofer amplifier.

Here is a nice pic of the Z's Premium sub amp and high end subwoofer, LMAO:

 

are you kidding me? thats the "sub" holy crap, im sure we would get a better sound from just putting in a better sub. UGHH

 

Trust me you could get more bass out of a good 4" midrange. That sub is a total joke, it weighs about 1 pound, TOTAL, and it has the dinkiest magnet on the back, which is about 2 inches wide. I almost fell over laughing when I removed it. The amp is even funnier, its about 4"x 3" and most of that space is harness connections...you can do a search here for the Bose system, and see how dissatisfied many other Z owners are with the Bose "Premium" sound system.

As always..."no highs, no lows, it must be a Bose !"

Bose

 

onecoolee:
Clarion makes the speakers to Bose specifications.
Remember, the OEM (Nissan and Bose in this case) specify what they want/are willing to pay. To get the business, you do what they want. I know it sounds like a cop out, but that's how it is in the land of the OEM's.

As to the Bose HU issue, that's OK, you do what you think is right, and the rest of us will do it the right way

 

Jeffa...I am not going to get into a pissing match with you...all I can say is that I too, at first, thought the Bose HU was differential. So, I ordered 2 Soundgate high end differential LOCS. They did not work, and now I am stuck with them. How can I get 2 bad LOCS, especially from a quality company, liek Soundgate...not likely. And why do the measurements not show that the outputs from the head are a differential system...hmmm. Furthermore, why do standard locs work--they wouldn't if the system was differential. How many red flags do you need ???

I proved it by actually trying to install differential convertors, THEY DO NOT WORK, b/c the system does not differential outputs.

If you actually tried upgrading the system and leaving the head unit like I did first, you would find out. I work on this crap everyday, and my degree is in Electrical Engineering. I know how differential systems work, and the system in the Z is not one of them...if I didn't see it, I wouldn't believe it...

I am only trying to prevent people here from making the same mistake I did...unless of course you want them to be stuck with $150 in high end locs from Soundgate too...

 

are you all talking about both the single disc and six disc bose hus' or one in particular. cause i have the six disc, and was wondering.

 

The ONLY Bose system option in the Z (Touring models) is hte 6 dish changer up front, there are no other Bose Head units offered...

 

OK, not to change the subject here, but since you seem to have a manual...

Does the Bose HU have input for remote controls, ie, steering wheel controls as are in use in the FX45?

If so, I may try to find some parts and wire them in. If I remember correctly, there are two unused jacks on the rear of the Bose HU.

 

mannishBoy:
I will check it out and get back to you...