q & a

Last updated 2/18/02

This  section is dedicated to questions I get from people visiting my site.  If you want to ask a question, just e-mail  me.  I will put the questions and answers on this page.  contact me @ psonoda@fuse.net

Questions answered 2/21/02

Q: I wish to place my 6'x9' Jensen speakers in my rear panel...I want to place them in the center. Is that I good idea or not?

A: Simple answer: not really.  Depending on our year, these speakers should fit. with a little bit of effort.  The rear deck is relatively flat.  In my car, the cut out size is 6.5".  Placing the 6 x 9 speakers in the middle of the rear deck will develop good bass but poor imaging.  Not to mention you will definitely have to hack the rear deck to accomplish this.  If you want to put 6 x 9s go ahead.  just place them near the factory location and you should be fine.

Q: I wanted to know if you had any idea on how to trick the SVC system on the stereo of my 2002 Maxima to get a higher volume level.

A: Simple answer: No. If you could it would have little effect or make things worse.  The SVC system or the "Speed-sensitive Volume Control" is a system that adjusts the level of the stereo dependent on the speed of the vehicle.  The reason this circuit is developed at all is to overcome the the road noise of the vehicle that increases as the speed increases.  I went to Nissan's site http://www.nissandriven.com to see if they have any information about this feature but alas.....nada.  

There are two ways this circuit can work.  Mercedes uses a predefined map that adjusts the whole spectral balance (frequency response) of the stereo to compensate for the increased noise floor that have with each specific vehicle.  Very cool.  Very expensive.  I bet that Nissan uses a simple speed reference that changes the volume setting either by... 

A: Compressing the signal (This does not change the transients) which increase the apparent loudness of the stereo.  This is the better way.

or by...

B: Just increasing the output voltage of the head unit.  

Either way, the maximum output potential of the system remains unchanged.  The best way to increase the volume control is just to turn the volume up.  I take it by the question that you wish the stereo could be louder.  The best way to do this is to add amplifiers and or change or add speakers to your existing system.  This is what I would do.

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