I'm planning on building two more subs for my new room. I have two old Altec cabs I will brace. They are 4.5 cu ft. I'm thinking of using these components. Your thoughts?
Behringer NU3000DSP iNUKE 3000 Watt Power Amplifier with DSP
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
Behringer NU3000DSP iNUKE 3000 Watt Power Amplifier with DSP
Dayton Audio UM12-22 12" Ultimax DVC Subwoofer 2 ohms Per Coil
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I would consider this one instead:
Dayton Audio RSS315HF-4 12" Reference HF Subwoofer 4 Ohm
Box size is a perfect match, if you're venting the box.
The UM12 has a Qts of 0.6. That's a bit high for a vented alignment, and recommended sealed alignment for it calls for a box size of 2.8 cu.ft.
Specs-wise the Behringer amp looks fine. I seem to have had bad luck with the NU3000DSP though. Both that I purchased ended up failing within a year or two. Not something you want to happen when shipping the amp for repair costs half as much as getting a new one.
Dayton Audio RSS315HF-4 12" Reference HF Subwoofer 4 Ohm
Box size is a perfect match, if you're venting the box.
The UM12 has a Qts of 0.6. That's a bit high for a vented alignment, and recommended sealed alignment for it calls for a box size of 2.8 cu.ft.
Specs-wise the Behringer amp looks fine. I seem to have had bad luck with the NU3000DSP though. Both that I purchased ended up failing within a year or two. Not something you want to happen when shipping the amp for repair costs half as much as getting a new one.
Another consideration
If it were me, I would choose the Eminence Lab 12.
Eminence LAB 12 Professional 12" Sub-woofer Speaker
Eminence LAB 12 Professional 12" Subwoofer Speaker
If it were me, I would choose the Eminence Lab 12.
Eminence LAB 12 Professional 12" Sub-woofer Speaker
Eminence LAB 12 Professional 12" Subwoofer Speaker
How high of the floor should subs be up off the ground?
The floor will load the sub and have similar effects as corner loading. Distance from floor/walls is mostly dependent on room, whatever sounds best in your set up. Too close may create excessive reverb then bass tends to start sounding sloppy.
That Eminence is a great looking sub.
Why not build complete cabs? You may rattle those antique altec cabs apart. Ive done similar only to find a rattle that I could not resolve a box of screws later in the long run it was more trouble then it was worth.
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How high of the floor should subs be up off the ground?
For what?
For max loading, setting on it; otherwise, rooms are 3D, so at an odd harmonic of its vertical modes, same as when placing them along a wall, etc., as a starting point; or are you referring to bottom firing, assuming the driver meets the sag limitation?
GM
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