Inverted Subwoofer Mounting Hertz HX250D
#1
Inverted Subwoofer Mounting Hertz HX250D
my set of hx250d subs arrived FINALLY and i got a special box that will fit underneath the seat in the back of my truck
so i go to put the subs in the box and they only make it about half way in because whoever designed the box designed it for some sort of shallow mount subs.
anyways i'm stuck with the box because it was a special order from bassworx and i've decided to make it work.... the only solution is to mount the subs with the baskets exposed
this works fine physically but i've been told by several people to reverse the polarity to the subs as well because they are firing backwards now...
i know this makes sense but my subs sound like absolute crap with the polarity reversed, there's a bunch of mech noise!
so i left the polarity the same as if i was to mount the subs in a regular format and it seems to sound pretty good like this....
any thoughts on inverted mounting and if i should reverse/retain the polarity?
so i go to put the subs in the box and they only make it about half way in because whoever designed the box designed it for some sort of shallow mount subs.
anyways i'm stuck with the box because it was a special order from bassworx and i've decided to make it work.... the only solution is to mount the subs with the baskets exposed
this works fine physically but i've been told by several people to reverse the polarity to the subs as well because they are firing backwards now...
i know this makes sense but my subs sound like absolute crap with the polarity reversed, there's a bunch of mech noise!
so i left the polarity the same as if i was to mount the subs in a regular format and it seems to sound pretty good like this....
any thoughts on inverted mounting and if i should reverse/retain the polarity?
#4
Music is A/C current, so your subs are constantly moving in AND out. it's not like a sub just pushes out again and again. A lot of decks and amps give u the option of running reversed polarity with a switch or setting. In some vehicles reversing your phase will dramatically change output, sound quality and the feeling of spaciousness or greater size of interior.
Some drawbacks of inverting subs are mechanical and air noise from cooling vents and pole pieces.
Some drawbacks of inverting subs are mechanical and air noise from cooling vents and pole pieces.
#7
In fact the advice from the installer was 100% correct.
#9
the music signal from the amplifier is a sine wave.... correct?
so shifting the phase 180 degrees (reversing the polarity) is just changing where the sine wave starts
this logically makes sense but why is the sound so different then?
so shifting the phase 180 degrees (reversing the polarity) is just changing where the sine wave starts
this logically makes sense but why is the sound so different then?
#10
There is no technical reason for the sound to be different when changing the polarity of a speaker. That speaker's interaction with other drivers of opposite polarity may cause negative or positive effects to the overall sound but the sound of the driver itself will be the same.