true bass 8"

[dvldogyut 18]

[aimone 4]

thats wuts up i love 8's....how much they cost? now u need to put em in a box or pods or wutever ur doin with em

[dvldogyut 18]

thats wuts up i love 8's....how much they cost? now u need to put em in a box or pods or wutever ur doin with em

About $100 for a pair.I plan on putting them in a box in the center console.

[ssh 924]

Not trying to rain on anyone's parade but in order for midbass to work, you need the drivers spaced apart, meaning putting them together in the center console will have far far less output then if they were in the doors.

It won't work like a sub driver in a center console enclosure because midbass frequencies act differently then subbass.

I know that's pretty vague and non informative, let me try to dig up an old post and give you a better response.

Whatcha gonna cross them over at?

Found it:

stefanhinote, on 28 June 2010 - 09:33 PM, said:

Not to threadjack but it's related, How important is the position/placement of midbass drivers? Can they be put in small sealed enclosures behind the driver and passenger seats?

Long subject. Unimaginably long subject. I'll try to condense it down into a digestible version.

We localize midbass in the lateral plane only (i.e. left to right). We don't localize it on a vertical plane (high and low), and we don't localize it "front to back".

Midbass is localized by way of what's known as Interaural Time Difference (ITD). That is, the brain localizes midbass laterally due a difference in the time arrival of the sound wave between the left ear and right ear. ITD dominates our localization ques in the frequency bandwidth where the wavelengths of the soundwave are longer than the distance between our two ears. Generally the more ITD you can generate, the wider the potential imaging.

From this very basic knowledge, a couple things can be extracted. First, any midbass location that results in identical ITD will be indistinguishable to the ear....above your head, below your head, in front of you, behind you, it doesn't matter......as long as the ITD stays the same, your ears and your brain won't know the difference. Second thing we should notice is that worst location for a midbass is at a location that results in an ITD of zero; that would be directly in front of you, direct behind you, or directly above you. Related to this, since "imaging" in the lateral plane is a function of ITD, the "best" midbass location is a location that results in maximum ITD (i.e. the wider you can get the speakers, the better).

Now, a few caveats to this:

First, hearing rattling/buzzing/etc as a result of the midbass speakers exciting panel resonances (door panels, etc) or other noises will ruin the illusion. Second, the speakers must be operated within the bandwidth where ITD is the mode of localization. If you operate the driver outside of this bandwidth (this includes driver distortion, etc), then other factors will begin to contribute to our localization of the sound. Proper time alignment of the midbass drivers will need to be maintained with the other drivers in the system as well as between the midbass drivers themselves. Lastly (I think lastly, I'm typing this up semi-quickly), this does not take into consideration the effects of other factors such as reflections or other anomalies.

In the midbass region, the physical aiming of the driver doesn't matter. The wavelengths are very large in comparison to the diameter of the cone. What this means is that the frequency response on-axis and off-axis is going to be identical. You don't need to worry about trying to aim the drivers at the listener or anywhere in particular. There is going to be no difference in response between being directly on-axis and 60* off-axis, for example. Drivers operating within a bandwidth where the sound is non-directional (i.e. no difference between on-axis and off-axis sound) are said to be in their "piston range".

So, what did we learn from this very brief primer to midbass? Yes, you can mount midbass drivers behind you....your brain doesn't know the difference. Mount the drivers as wide as possible to maximize ITD. Aiming the drivers doesn't matter.

-Impious

[sefugi 166]

Not trying to rain on anyone's parade but in order for midbass to work, you need the drivers spaced apart, meaning putting them together in the center console will have far far less output then if they were in the doors.

It won't work like a sub driver in a center console enclosure because midbass frequencies act differently then subbass.

I know that's pretty vague and non informative, let me try to dig up an old post and give you a better response.

Whatcha gonna cross them over at?

Found it:

stefanhinote, on 28 June 2010 - 09:33 PM, said:

Not to threadjack but it's related, How important is the position/placement of midbass drivers? Can they be put in small sealed enclosures behind the driver and passenger seats?

Agreed, great find on the search!