What frequency does the woofer crossover to the mid ( 3 way ) or tweeter ( 2 way )?
Different materials will affect both bass characteristics AND midrange response. As such, damping a speaker properly for best results requires using the right type, amount and placement of the materials used.
If in doubt, here's a "generic" approach that typically works pretty well with most vented designs.
Line the walls with foam. Lining the walls will help reduce "cabinet chatter".
Fill the upper cavity with foam. Filling the upper cavity will:
1) improve bass definition by slightly reducing the amplitude of peaks at resonance
2) smooth out the response in the upper bass / lower mids where the ports typically contribute output that is undesirable
3) extend bass response by a very few Hz.
Using sheets of foam offers the advantage of being able to cut to an exact fit and remove / add as needed to achieve the tuning that you desire. Sean
>
Different materials will affect both bass characteristics AND midrange response. As such, damping a speaker properly for best results requires using the right type, amount and placement of the materials used.
If in doubt, here's a "generic" approach that typically works pretty well with most vented designs.
Line the walls with foam. Lining the walls will help reduce "cabinet chatter".
Fill the upper cavity with foam. Filling the upper cavity will:
1) improve bass definition by slightly reducing the amplitude of peaks at resonance
2) smooth out the response in the upper bass / lower mids where the ports typically contribute output that is undesirable
3) extend bass response by a very few Hz.
Using sheets of foam offers the advantage of being able to cut to an exact fit and remove / add as needed to achieve the tuning that you desire. Sean
>