About: CT Sounds THERMO-12 12" 1500W RMS SPL Car Subwoofer
CT Sounds engineered the Thermo 12” Car Subwoofer to meet the demands of the SPL crowd looking for unparalleled loudness. While the Thermo 12” shares a 1500-watt RMS power rating with the popular Meso 12”, it stands out by delivering exceptional peak loudness at targeted frequencies (SPL). In contrast, the Meso 12” is known for its impeccable bandwidth - you can play very low, very high, and everywhere in between, making it ideal for individuals seeking consistent loudness across all frequencies (SQL).
Observing many customers running the Meso 12” outside our recommended box specifications (1.5 ft3) in pursuit of high SPL peaks, we recognized a crucial issue: as the box size increases, the SPL range narrows, potentially causing the subwoofer to unload. This realization spurred the development of the Thermo 12”, featuring an oversized motor assembly and a 10-inch quad-layered spider suspension, ensuring stability when chasing those SPL peaks. Moreover, the subwoofer features a mega foam surround seamlessly integrated with the 6% carbon fiber reinforced cone.
While the Meso 12” excels in delivering consistent loudness across all frequencies, the Thermo 12” focuses on achieving exceptional SPL peaks. Although the Thermo 12” sacrifices some bandwidth compared to the Meso 12”, it offers unmatched capability in reaching those peak loudness levels. If you're in pursuit of 150+ dB and aiming to make a bold statement with your sound system, the Thermo 12” stands as your ultimate choice.
Product Highlights:
RMS Power: 1500 Watts
MAX Power: 3000 Watts
Voice Coil Configuration: Dual 2 Ohm (D2) or Dual 4 Ohm (D4)
Push Terminal Size: 4 Gauge
Specifications:
Product Type: Car Subwoofer
Subwoofer Size: 12"
Voice Coil Configuration: Dual 2 Ohm (D2) or Dual 4 Ohm (D4)
RMS Power: 1500 Watts
MAX Power: 3000 Watts
Voice Coil Type: 3 Inch - 4 Layer High-Temperature Copper Voice Coil
Magnet Type: Triple Stacked Ferrite Magnet
Bottom Plate Type: Signature Chrome Low Carbon Iron Bottom Plate
Surround Type: Dual White Stitched Competition Mega Foam Surround
Cone Type: Non-Pressed Composite Paper with 6% Carbon Fiber Reinforcement
Tinsel Lead Type: Dual Braided Flat Copper Tinsel Leads
Terminal Type: 4 Gauge Push Terminals
Basket Type: Cast Aluminum
Spider Material: 10" Quad-Layer Poly-Cotton Spider Suspension
Thiele & Small Parameters
D2
D4
Electrical Factor (Qes)0.4450.495
Mechanical Factor (Qms)8.2177.9
Total Factor (Qts)0.420.466
Free Air Resonance (Fs)33.93 Hz35.23 Hz
Equivalent Volume (Vas)14.78 L14.71 L
Mechanical Mass (Mms)461.79 g430.79 g
Mechanical Compliance (Cms)0.048 m/N0.047 m/N
DC Resistance (Re)4 Ω6.4 Ω
BL Factor (BL)29.744 Tm35.13 Tm
Cone Area (Sd)471 cm²471 cm²
Excursion (one way) (Xmax)18.5 mm18.5 mm
Sensitivity (SPL)83.15 dB83.16 dB
Subwoofer Measurements:
Mounting Depth: 8.27"
Cutout Diameter: 11.30"
Overall Diameter: 12.91"
Box Specifications:
Flat Response Curve (SQ):
Sealed: N/A
Ported: 1.5 ft³
Tuning Frequency: 32 Hz
Port Area: 24 in²
Boomer Response Curve (SPL):
Sealed: N/A
Ported: 2.5 ft³
Tuning Frequency: 30 Hz
Port Area: 40 in²
Note:
Flat response curve (SQ) is geared towards people looking for responsiveness. This style box is loud on all frequencies, generates little impedance loss, and can utilize an amplifier rated at the same RMS as the subwoofer.
Boomer response curve (SPL) is geared towards people looking for maximum loudness. This style box will be louder than the flat response curve at some frequencies, has a high impedance rise, and can utilize an amplifier rated at a slightly higher RMS than the subwoofer.
Enclosure recommendations do not account for subwoofer, bracing, and port displacement.
