Whoa...I saw my name and was like WHAT? But Tyler is right (that is odd saying that lol). It is as if the trunk or open windows create a secondary port, which adds the effects as if the car was the port.
It is physics though. The thing is, as far as what the open trunk or windows are tuned to, well it is unknown, so from the outside a certain frequency may prevail over others to an audience.
ok, i get that...but with my other deck... my sub was louder... with my 90 olds, trunk closed, my sub was louder then it is now trunk open and or closed... does that "magna bass" button on my old deck make that much of a difference... (and i had to shorten my box a bit)
if your subs are pointing towards the back of your car, when you open your trunk it normally shouldnt be louder inside the car, because all the sound is escaping.
if your subs are pointing to inside the car, it would seem to make more sense
is has a lot to do with the vehicles. just cause the deck isnt as good, doesnt mean ur sub will be quieter. when u switched decks, you changed the gain didnt you?
what r u talking about, is your car bigger than your last one? the deck wont make ahuge differance in SPL, also cars have differant resonant frequencys so maybe your other car had a good frequency
the sub shouldn't seem louder with the trunk open, ESPECIALLY if it fires out of the trunk.
it WILL seem louder with the windows open and the trunk closed. b/c the sub in essense has more AIR to play in....thus...decreasing the air pressure in the trunk(if you have a fold-down seat)
in my car my seats fold down, and ya the interior is bigger to my knowladge, my sub is facing into the car, not out of... it just doesnt seam to be as boomy as before, i can hear a diffewrence.... do you know if camrys have shitty frequancies.... and would box size make a big difference?
oh ya... my clarion deck used a 15Amp Fuse, the sony uses only a .3 Amp... so that( head unit), the smaller box, and posibly the resinating frequency of the car all makes it quiter?
the pre out voltage is how much ur HU can put out to your amp of current. if your gain is set wrong with ur HU, i believe your subs will start getting the wrong kind of current (DC) and clip them. which can harm them a lot.
the pre-out Voltage is how much voltage your HU sends through the RCA's to the amp's RCA input.
you need to match the HU's pre-out voltage witht he gain on your amp.
otherwise...the amp will not have the right voltage to work with....thus underpowering your subs....or overpowering your subs by setting the gain too high....so it accomodates for a weaker signal(which isn't really weak, you just set it too low) and it will try to make more power than the amp is capable of. thus clipping the top of the sine wave to the sub(making it a square wave...aka "clipped signal" and the amp sends it as DC instead of AC and the Voice coils burn up on your sub from not being able to dissipate the DC heat properly.
i would do a little inder 2V....and don't turn the volume on the HU all the way up....the little MOSFETS inside the HU will clip the signal to the amp before the signal can even go through the amp to the sub.
set your HU's volume at about 3/4th of full and set the gains then...
best way is with a multimeter, but if oyu don't have one...then just tirn it up until oyu hear distortion and then tunr it down a little.
