throw some dynamat or something equivalant in there and you'll be all set!
From what I understand, in the prelude's system, the mics are under the speakers. It detects distortion. If it senses distortion, it automatically cut down the amount of wattage going to the speakers.Originally posted by Alphared
also, in the prelude, they have mic to do the same.
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well... to be a smart ***... that is not exactly speed controlled volumeOriginally posted by Alphared
Oh really, someone should tell nissan & Bose then, cause in the 350z, bose system uses AudioPilot Noise Compensation Technology, which have a mic under the steering wheel to pick up cabin noise and increase/decrease volume.
also, in the prelude, they have mic to do the same.
Don't believe me, check it out for yourself:
http://www.bose.co.uk/product/auto/a...lot_tech.shtml
Don't rule out technology just cause you never heard of it!
the bose system that you linked to is simply an audio system that uses noise cancelation technology to alter the sounds played by the stereo to cancel out the unwanted sounds. effectively maintaining the volume in the cabin at the predetermined user selected level.
see the explanation on the last page...http://www.bose.co.uk/product/auto/a...ot_tech6.shtml, the volume remains the same regardless of vehicle speed.
there is a LOT of technology involved here, and it is a nice little system that they have designed... different than speed controlled volume. this is like the sophistiacted approach, while cranking up the radio automatically to cover road/engine noise is more of a cheap and crude method...
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My Grand Am has this feature, but I really hated it. I found the volume was changing way too often (maybe because of my lead foot
It'd be easy to to make a system to distinguish between the stereo and cabin noise. All the system has to do is subtact the audio signal it is sending to the speakers from the audio it picks up from the mike (the more you turn it up the more it will subtract, cancelling the stereo). You'll be left with the external noise only. You'd just need to calibrate it with the engine off in a quiet environment so it subtracted the the right amount to nullify the stereo. It'd only take a couple of opamps.. you'd probably want to make it slightly slow to respond so it didn't increse the volume too much when your car backfires
I rented a grand am that had that feature, and I found it pretty sucky. My new MINI Cooper S has it though, and it is much better. The Grand Am seemed like it only had a few speeds where it increaded the volume by fairly large amounts, where my MINI adjusts volume every 10 MPH or so.Originally posted by Callahan
My Grand Am has this feature, but I really hated it. I found the volume was changing way too often (maybe because of my lead foot
Twostep
Ive been in a focus that has it. It was pretty good, the music wasnt super loud to start with, and it didnt boost it up too much. If you didnt know to listen for the volume going up, you might not notice it, but if you listened for it, you could definately notice it.
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My pioneer headunit had it before it got nicked... It had a small mic in there, to sense car noise.
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