Re: Bass Cancellation

[Kevin McMurtrie]

In article >,
"GiJO" > wrote:

>Hi,
>
>I have an R33 Skyline, and have found that there is a dead spot for the bass
>right where the driver's head is. When listening to the music it sounds like
>the bass needs to be turned up. But if i sit in the back or even lean
>forward, the bass increases alot. Is there something i can do to shift the
>cancellation point either back or forward? I've got 6.5" splits in the doors
>and 6" coaxials in the back. I've tried turning the bass up but then the
>speakers pop when i turn it up and that sounds worse.
>
>It's very annoying and the system quality is lower cos of it. Maybe if i
>angle the speakers in the doors to the back of the car a bit more, or tilt
>the rear speakers towards the front... any ideas?
>
>All my equipment is Alpine (speakers, headunit, amps etc) I've got the
>CVA-1000e headunit, MRV-F405 4 channel amp.

Try reversing the polarity of the fronts or rears, whichever is easier
to get to.

[Paul Vina]

Or it could be the left side out of phase with the right or even one speaker
out of phase with the other 3. I would try switching one at a time to see
what happens.

Paul Vina


"Scott Johnson" > wrote in message
. 3.44...
> Kevin McMurtrie > wrote in
> :
>
> > In article >,
> > "GiJO" > wrote:
> >
> >>Hi,
> >>
> >>I have an R33 Skyline, and have found that there is a dead spot for
> >>the bass right where the driver's head is. When listening to the music
> >>it sounds like the bass needs to be turned up. But if i sit in the
> >>back or even lean forward, the bass increases alot. Is there something
> >>i can do to shift the cancellation point either back or forward? I've
> >>got 6.5" splits in the doors and 6" coaxials in the back. I've tried
> >>turning the bass up but then the speakers pop when i turn it up and
> >>that sounds worse.
> >>
> >>It's very annoying and the system quality is lower cos of it. Maybe if
> >>i angle the speakers in the doors to the back of the car a bit more,
> >>or tilt the rear speakers towards the front... any ideas?
> >>
> >>All my equipment is Alpine (speakers, headunit, amps etc) I've got the
> >>CVA-1000e headunit, MRV-F405 4 channel amp.
> >
> > Try reversing the polarity of the fronts or rears, whichever is easier
> > to get to.
> >
>
> one set of the speakers are wire in reverse to the other set. so the front
set are out of
> phase with the rear set.

[Tyrone Biggums]

> > > In article >,
> > > "GiJO" > wrote:
> > >
> > >>Hi,
> > >>
> > >>I have an R33 Skyline, and have found that there is a dead spot for
> > >>the bass right where the driver's head is. When listening to the music
> > >>it sounds like the bass needs to be turned up. But if i sit in the
> > >>back or even lean forward, the bass increases alot. Is there something
> > >>i can do to shift the cancellation point either back or forward? I've
> > >>got 6.5" splits in the doors and 6" coaxials in the back. I've tried
> > >>turning the bass up but then the speakers pop when i turn it up and
> > >>that sounds worse.
> > >>
> > >>It's very annoying and the system quality is lower cos of it. Maybe if
> > >>i angle the speakers in the doors to the back of the car a bit more,
> > >>or tilt the rear speakers towards the front... any ideas?
> > >>
> > >>All my equipment is Alpine (speakers, headunit, amps etc) I've got the
> > >>CVA-1000e headunit, MRV-F405 4 channel amp.
> > >
> > > Try reversing the polarity of the fronts or rears, whichever is easier
> > > to get to.
> > >
> >
> > one set of the speakers are wire in reverse to the other set. so the front
> set are out of
> > phase with the rear set.

bring that skyline to virginia beach and leave it with me for a week or
so. i'll sort the sound problems out, and at no charge, too!

:-)

--
The Bert Gummer Foundation

"A$$ Blaster fumes smell just like burning crack! Makes my mouth water!"

[Rob]

Dude,

I am in Perth,WA.

If you're in Perth too, then call me at Morley Hifi & Car Stereo on (08)
9275 7044 and I will sort it out for you.

Rob.

"GiJO" > wrote in message
...
> hehe... i'm in australia dude!!! so unfortunately that's out of the
> question... bugger hey!
>
> I'm positive i wired it all up right, cos when i sit in the back seat the
> stereo sounds awesome, even if i fade the speakers to the front a little
> more to even the sound. But i'll double check anyway... i have to pull out
> the amps/wires anyway cos i'm relocating the amp which is under the front
> seat as it's too big there...
>
> --
> Thanks
> Andrew
>
>
>
> Tyrone Biggums wrote:
> >>>> In article >,
> >>>> "GiJO" > wrote:
> >>>>
> >>>>> Hi,
> >>>>>
> >>>>> I have an R33 Skyline, and have found that there is a dead spot
> >>>>> for the bass right where the driver's head is. When listening to
> >>>>> the music it sounds like the bass needs to be turned up. But if i
> >>>>> sit in the back or even lean forward, the bass increases alot. Is
> >>>>> there something i can do to shift the cancellation point either
> >>>>> back or forward? I've got 6.5" splits in the doors and 6"
> >>>>> coaxials in the back. I've tried turning the bass up but then the
> >>>>> speakers pop when i turn it up and that sounds worse.
> >>>>>
> >>>>> It's very annoying and the system quality is lower cos of it.
> >>>>> Maybe if i angle the speakers in the doors to the back of the car
> >>>>> a bit more, or tilt the rear speakers towards the front... any
> >>>>> ideas?
> >>>>>
> >>>>> All my equipment is Alpine (speakers, headunit, amps etc) I've
> >>>>> got the CVA-1000e headunit, MRV-F405 4 channel amp.
> >>>>
> >>>> Try reversing the polarity of the fronts or rears, whichever is
> >>>> easier to get to.
> >>>>
> >>>
> >>> one set of the speakers are wire in reverse to the other set. so
> >>> the front set are out of phase with the rear set.
> >
> > bring that skyline to virginia beach and leave it with me for a week
> > or so. i'll sort the sound problems out, and at no charge, too!
> >
> > :-)
>
>