What kind of box?


New member
Username: Usmc_gypsy

Post Number: 1
Registered: Apr-08
does anyone know what kind of box i need ported or not for 2 12 inch MTX Thunder 900 Watt(450 watt each). These are the specs

2 New MTX T4512 12 Inch Subwoofers

Size: 12 Inches
Power Handling: 900 Watts (Pair)
Power Handling: 450 Watts (Each)
Power Handling: 450 Watts (RMS Pair)
Power Handling (RMS): 225 Watts Each
Impedence: 4?
Voice Coil: 1.5"
Frequency Response 30 - 150 Hz
Sensitivity 92.97 db
Magnet Weight 35.00 oz.
Mounting Depth 5 9/16
Cut Out Diameter: 11 1/16"
Magnet Weight (oz.): 35
Port Dimensions: 4" Diameter X 10" L
Port Displacement: .22ft Cubed
Sealed Enclosure Net Volume: 1.25ft Cubed
Speaker Displacement: .05ft Cubed
Tuning Frequency: 37 Hz
Vented Enclosure Net Volume: 2ft Cubed

When it says vented is that the same as ported? And what size amp should i get to run at rms? Also can anyone tell me if these are good speakers or not?

Gold Member
Username: Denali_on_22s

I get Bucks like Milwa...

Post Number: 5468
Registered: Feb-06
i would skip out on any pre-fab mtx boxes. just not a fan. as you can see they are tuned pretty high. i would personally go ported, but i would tune lower than 37 hz. probably something in the 30-34 range.

Silver Member
Username: Prozack52

Cincinnati, 2-D615D4 Dia...

Post Number: 296
Registered: Feb-08
yes vented is same as ported and get at least a true 500 watt amp one ohm stable if the are dual 4's
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