Anyone familiar with Nissan / Infiniti Stereos or Stereos In General ?

[Scott]

If so I have a technical question for you.

My Infiniti has the Bose stereo system in it, sounds pretty good but has one odd quirk my Lincoln did not have.

The car is equipped with a multi speaker system, one being a sub in the rear package shelf. It looks to be about 6-8 inches with a fairly good sized amp mounted next to it.

When I have any music with good bass in it the sub will automatically tone itself down as the volume goes up. Is there some way to bypass this ? If not what is controlling this ? The stereo, amp, speaker itself ?

I am looking to replace the sub that is in there with a better one but want to know what the source is for this cutting down of the power to the sub first.


Thanks





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[Notladstyle]

its called bass attenuation , a similar function to "LOUD" on aftermarket stereos, the high notes and low bass notes are increased at low volumes, and increased at higher volumes.

Its hardcoded into the bose headunit so theres really nothing you can do about it. The bose system is designed for clean sound throughout the volume spectrum and the bose sub will clip at higher volumes unless it is attentuated.

You could replace the headunit but the sub will probably clip once you reach the volume it currently slopes off at.

As for replacing the sub, the bose sub has a very high sensitivity and is usually an uncommon ohm load. if you use a load lower than it then it will burn the amp out. if its higher you will lose a lot of power and it will sound very poor.

[TIM TIM TIM]

so basically replace all or nothing

[GradeA_TireFryer]

no... pull out the sub in rear tray, allowing a "port" from the trunk - install subs& amp in trunk.

[Notladstyle]

no... pull out the sub in rear tray, allowing a "port" from the trunk - install subs& amp in trunk.


this will not eliminate the headunit's bass attenuation but with more power comes more thump.

[the727kid]

this will not eliminate the headunit's bass attenuation but with more power comes more thump.

It won't, but removing the rear sub and adding a nice sub/amo combo wil make it sound MUCH better.

[Notladstyle]

ive heard the infinity bose combo and it takes more than just an average set of subs to beat that sq

[Scott]

I have come to find out it is royal PITA to change anything in this system. Every speaker has a pre-amp, every speaker runs on some odd ohm range, and the head unit is not something I am going to touch considering most of the settings for the rest of my car are controlled through the head unit.

[Notladstyle]

the speakers are easy to change. tapping the preamp is also easy to do.

its the bass thats an issue.

[P057]

I have come to find out it is royal PITA to change anything in this system. Every speaker has a pre-amp, every speaker runs on some odd ohm range, and the head unit is not something I am going to touch considering most of the settings for the rest of my car are controlled through the head unit.

unfortunately most new cars are like that, especially with the stock "higher quality audio system installs" its rediculous.

When i buy a new car it'd be nice to opt for no stereo or anything installed.

if i ever buy a new car.

[djgizmo]

Yea, most of the GMs newer cars have its airbag controls running thru the cd deck. pain in the ass.

[P057]

Yea, most of the GMs newer cars have its airbag controls running thru the cd deck. pain in the ass.


the hell kind of retarded reasoning is that?

Travis:"Damn Bill, where should we put the airbag controls where its completely useless and about as obtrusive as possible?"
Bill:"CD deck, because no one will ever want to change out their deck for something with more quality."
:roll:

[Notladstyle]

the hell kind of retarded reasoning is that?

Travis:"Damn Bill, where should we put the airbag controls where its completely useless and about as obtrusive as possible?"
Bill:"CD deck, because no one will ever want to change out their deck for something with more quality."
:roll:

radio is located in the center of the car so it lasts longest in a crash.
Radio contains a great deal of emi shielding as well so its an ideal place for signal processing.

and contrary to popular belief, more people leave the stock radio in than those who voluntarily replace it for an aftermarket. And a great deal of those who replace their stereos with aftermarket do it because the stock unit is prohibitively expensive. With the airbag control integrated, those people will have an extra incentive to replace with oem parts.

[P057]

eh, i hate it when you're logical, couldnt you have just made some really retarded comment so that it'd backfire on you and make both of us look stupid instead of me?

[Notladstyle]

wtf m8 my stock radio does 143db easy with my Dual subs I got at bestbuy and dis Pyle amp with LED lightzors. It think my car went a little faster too.