I just put my custom sealed subwoofer array to the test with a hi-res, hi-fideltiy digital recording & hope the sound comes through as well as it does in person...The box is a custom made 8x 6.5" subwoofer system with 4x 1cu-ft sealed chambers each contaiing 2x6.5" subwoofers. Each subwoofer driver has an 80w RMS power handling rating & a 38Hz resonant frequency. The vented f3 is about 23hz but I can't figure out the vented enclosure specs so went with a safe sealed box setup downfiring through a slotted vent face that vents forwards & backwards, is just over 3 feet long 15" deep & just under 2 feet high. I use it as my tv stand & sit sdirectly in the center of the action for a seamless sound combined with the front & center speakers....
Don't forget to listen on good speakers or headphones capable of reproducing sounds below the 40Hz range if possible...
BOOOM!!!
Enjoy & let me know if the bass comes through & what you think! Total cost of the setup, including the Velodyne 'DPS 12' plate amp & the custom made cabinet is about 450 us dollars...The rattling noise you hear faintly in the background is my room shaking...not the box or woofers...
https://www.youtube.com/watch?v=crWQ8MaR7hA&t=177s
Here are some pics of the construction of this massive monolith of bass....
each chamber holds 2 subwoofers in a 1 cu ft. sealed box finished with fibergalss insulation at the back panel & sealed with dynamat sound deadener to illiminate resonances from the 1" MDF walls...the chambers dimensions are designed to reduce standing waves by using a narrow but tall internal set of dimension, similar to most standing floor speakers...
The face of the woofers will be a downfiring array that opens to 2 slotted faces, front & back which will direct the low frequencies to the floor in a wide dispersal pattern to convey an omni-directional room filling sound.
The Velodyne DPS 12 subwoofer plate amp is a used salvage unit that has 175w RMS into 8 OHMS & 375 watts of peak power at 20Hz
Here, you can see the custom side mounted amp, installed & ready for testing..
The entire cabinet is done & ready for action, resting on its side...
The secret sauce to fine tune the frquency response is this Elemental Designs 2 band digital parametric EQ with adjustable band centers, 10-50Hz & 50-100 Hz. IT also has bandwidth adjustment for each frequency band of 0.3-3 Octave width cotnrol for a very versatile dedicated Subwoofer eq that is super clean as the manipulation is entirely digital...
Don't forget to listen on good speakers or headphones capable of reproducing sounds below the 40Hz range if possible...
BOOOM!!!
Enjoy & let me know if the bass comes through & what you think! Total cost of the setup, including the Velodyne 'DPS 12' plate amp & the custom made cabinet is about 450 us dollars...The rattling noise you hear faintly in the background is my room shaking...not the box or woofers...
https://www.youtube.com/watch?v=crWQ8MaR7hA&t=177s
Here are some pics of the construction of this massive monolith of bass....
each chamber holds 2 subwoofers in a 1 cu ft. sealed box finished with fibergalss insulation at the back panel & sealed with dynamat sound deadener to illiminate resonances from the 1" MDF walls...the chambers dimensions are designed to reduce standing waves by using a narrow but tall internal set of dimension, similar to most standing floor speakers...
The face of the woofers will be a downfiring array that opens to 2 slotted faces, front & back which will direct the low frequencies to the floor in a wide dispersal pattern to convey an omni-directional room filling sound.
The Velodyne DPS 12 subwoofer plate amp is a used salvage unit that has 175w RMS into 8 OHMS & 375 watts of peak power at 20Hz
Here, you can see the custom side mounted amp, installed & ready for testing..
The entire cabinet is done & ready for action, resting on its side...
The secret sauce to fine tune the frquency response is this Elemental Designs 2 band digital parametric EQ with adjustable band centers, 10-50Hz & 50-100 Hz. IT also has bandwidth adjustment for each frequency band of 0.3-3 Octave width cotnrol for a very versatile dedicated Subwoofer eq that is super clean as the manipulation is entirely digital...
