Similar question in my project. My current net volume of the MF chamber is 4.3L while the Q0.7 volume for the driver is below 4L, say 3.5L.
I will be adding butyl lining and pyramid foam - this product https://eqacoustics.com/products/classic-wedge-30-tile
I was hoping adding enough of these will get me to 3.5L, but from advice above - no.
How critical is being at 3.5L? If so, do I just add some hard material, say, thick reflecting panels? To reach 3.5L and then butyl & foam?
I will be adding butyl lining and pyramid foam - this product https://eqacoustics.com/products/classic-wedge-30-tile
I was hoping adding enough of these will get me to 3.5L, but from advice above - no.
How critical is being at 3.5L? If so, do I just add some hard material, say, thick reflecting panels? To reach 3.5L and then butyl & foam?
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The acoustic foam wedge tiles in your link will be made of open celled foam so will not reduce the MF chamber volume.
To reduce the volume to the necessary value you need to introduce a solid material into the chamber, perhaps by lining it with MDF.
To reduce the volume to the necessary value you need to introduce a solid material into the chamber, perhaps by lining it with MDF.
Use a plastic bag of rise in the bottom of your cabinette, works really good.
The issue of foam or damping magically increasing cabinet volume is not a theory I subscribe to. It's something of an audio illusion. The damping material absorbs the mid and high frequencies produced by the rear of the driver, effectively reducing the dB level of those frequencies and reducing resonance. However, the wavelength of the bass frequencies is too long & unaffected. The result is it sounds like there's more bass in but in reality there's less, dirty, second-hand mid.
To answer the second part of your question: I use Boxnotes to reverse engineer the cabinets I break. It contains standard deductions for calculating internal volumes, taking into account: drivers & ports. Note the resonant frequencies the damping material is attempting to combat.
To answer the second part of your question: I use Boxnotes to reverse engineer the cabinets I break. It contains standard deductions for calculating internal volumes, taking into account: drivers & ports. Note the resonant frequencies the damping material is attempting to combat.
