Sparked Innovations 18″ Bass Blaster — 2000W Dual-Voice-Coil Car Subwoofer

Description

The Bass Blaster subwoofer series is a truly unique blend of car audio nostalgia and modern technology. Designed and built as a product of love for car audio, this subwoofer will look as good in your installation as it will sound. As lifelong enthusiasts ourselves, we knew the demands this subwoofer would need to meet. The engineering expertise of Jacob Fuller, founder of Sundown Audio, has led to a subwoofer that can take the abuse of high-powered systems that the modern-day enthusiast likes to throw at everything. Advanced cooling techniques, high-excursion linear suspension, and classically inspired aesthetics mean The Bass Blaster will give you the best-sounding bass, for a long time, as you turn the heads of anyone that takes a look.

Design

Our philosophy with The Bass Blaster was to recreate the feel of car audio from our youth. The blue surround is not just our branding color, it is an homage to woofers of the 1990s that used brightly colored surrounds as a signature look. The balance of the blue to the grey/silver basket and cone harkens back to the early 2000s when some of our favorite woofer models sported a distinct style. The aluminum dust cap gives depth and texture to the woofer as a whole and adds rigid reinforcement to the cone body. The genesis of the design was the motor itself, the large vent for the four-inch coil caught our eye in car audio shops in the 1990s. Jacob Fuller captured that look while tapering the vent and adding a pole cap so as to not compromise modern cooling techniques for the best performance-to-aesthetics ratio possible. Topped off with the metal mesh over the magnet slugs, The Bass Blaster is the 90s/2000s woofer we all wish we had in our teens, but even better that we have it in our 40s.

General Specifications

Power handling	2000W RMS
Dual voice coil	D2 or D4
Xmax (mm one way)	25
Xmech (mm one way)	50
Heat-treated 4-layer 4-inch coil
Quad braided tinsel leads
Multi-layer foam surround in Sparked Blue
Aluminum dust cap
Cast aluminum frame
High-velocity motor cooling

Measurements

Parameter	Metric (mm)	Imperial (in)
Outer Diameter	464.06	18.27
Mounting Diameter	426.47	16.79
Overall Depth	301.36	11.86
Mounting Depth	271.36	10.68

T/S Parameters

Parameter	D2	D4
RE (Ohms)	3.91	5.94
Fs (Hz)	26.72	27.44
VAS (L)	70.36	74.16
Qes	0.63	0.69
Qms	6.86	6.67
Qts	0.58	0.63
BL	32.08	36.54
Mms (Grams)	994.75	894.78
Cms (uM/N)	35.66	37.60
Sensitivity (dB @2.83Vrms/1m)	88.11 @ 1 kHz	86.52 @ 1 kHz

ENCLOSURE RECOMMENDATIONS

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Size Enclosure Type Volume (ft³) Port Tuning (Hz) Details Type Dia. (in) Length (in) 18″ QB3 – Flat Response 6.50-8.50 Round 6 25″ @ 6.50ft³
18″ @ 8.50ft³ 20 Details 18″ QB3 – Low-Frequency Peak 7.00-9.50 Round 6 16″ @ 7.00ft³
11″ @ 9.50ft³ 23 Details 18″ SBB4 – Flat Response 3.25-4.25 Round 6 18″ @ 3.25ft³
13″ @ 4.25ft³ 32 Details 18″ SBB4 – Loud Bass Response 6.50-10.00 Round Two x 6 18″ @ 6.50ft³
11″ @ 10.00ft³ 32 Details

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18″ Low-frequency tuning (QB3) – Flat Response

📐 Technical Specifications

• Box Volume: 6.50 ~ 8.50 ft³
• Port Type: Round
• Port Diameter: 6 inches
• Port Length: 25″ (6.50 ft³) ~ 18″ (8.50 ft³)
• Tuning Frequency: 20 Hz

🎵 Characteristics

• Plays like a sealed box with more efficient output

✅ Pros

• Flat response, similar output across all music genres
• Low-frequency extension – can play subsonic
• Small enclosure sizes

❌ Cons

• Reduced Peak SPL
• Sub-optimal transient response
• Long port

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18″ Low-frequency tuning (QB3) – Low-Frequency Peak

📐 Technical Specifications

• Box Volume: 7.00 ~ 9.50 ft³
• Port Type: Round
• Port Diameter: 6 inches
• Port Length: 16″ (7.00 ft³) ~ 11″ (9.50 ft³)
• Tuning Frequency: 23 Hz

✅ Pros

• Higher-than-average output at low frequencies
• Low-frequency extension – can play subsonic

❌ Cons

• Peaky at lower-than-average frequencies
• Sub-optimal transient response

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18″ General tuning (SBB4) – Flat Response

📐 Technical Specifications

• Box Volume: 3.25 ~ 4.25 ft³
• Port Type: Round
• Port Diameter: 6 inches
• Port Length: 18″ (3.25 ft³) ~ 13″ (4.25 ft³)
• Tuning Frequency: 32 Hz

🎵 Characteristics

• Great bass response on rap and electronic music
• Quick double bass drum

✅ Pros

• Higher-than-average output along a wide frequency range
• Small enclosure
• Good transient response

❌ Cons

• Long port
• Reduced Peak SPL

`,’18-sbb4-loud’:`

18″ General tuning (SBB4) – Loud Bass Response

📐 Technical Specifications

• Box Volume: 6.50 ~ 10.00 ft³
• Port Type: Round
• Port Diameter: Two x 6 inches
• Port Length: 18″ (6.50 ft³) ~ 11″ (10.00 ft³)
• Tuning Frequency: 32 Hz

🎵 Characteristics

• Great for rap, quick double bass
• High frequencies become boomy
• Teeth rattling output

✅ Pros

• Loud
• General box size with wide availability
• Great transient response

❌ Cons

• Peaky with steep roll-off on lower-than-average frequencies

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