Plan your next vehicle audio build around the TrueBass Solutions Quad Ultra 8". This listing includes four TBS 842DV Ultra 8-inch subwoofers in an enclosure measuring 35 × 25 × 14 inches externally, with listed enclosure tuning of 33 Hz and port dimensions of 21.5 × 32 × 2.2 inches.
Whether you are refreshing a truck or SUV setup or assembling a new bass system, start with the enclosure's fit and the supporting equipment. A multi-woofer build needs compatible amplification, appropriate wiring and enough installation clearance. Review the specifications below when planning your installation.
Woofer Configuration:
- Four TBS 842DV Ultra 8-inch subwoofers in an enclosure
Outside Enclosure Dimensions:
Woofer & Magnet Weight:
- Total woofer weight: 12 lbs per woofer, including its magnets.
- Magnet weight: 160 oz per woofer (2 × 80 oz magnets per woofer). The magnets are included in each woofer's weight, not added on top. These are component weights, not the total enclosure-system weight.
Box Impedance:
- 2 ohms for the complete system.
Power Handling (RMS / Peak):
- 1,200 watts RMS / 2,400 watts peak for the complete four-woofer system, not per woofer.
Driver Specifications:
- Voice-coil inside diameter: 2 inches.
- Sensitivity: 91 dB
Ports & Tuning:
- Port dimensions: 21.5 × 32 × 2.2 inches.
- Listed enclosure tuning frequency: 33 Hz
Listed Acoustic Parameters:
- Driver Fs (free-air resonance frequency): 45 Hz
- Qt: 0.35
- Vas: 1.4 cubic feet
- F3: 50 Hz
Before You Order:
- Check the outside enclosure dimensions against your available space and installation clearance.
- Confirm total system weight.
- Match your amplifier to the system impedance.
- Contact TrueBass Solutions with your vehicle details and amplifier information for help planning placement and installation clearance.
