Pioneer DEH-P7150UB - Manual (Page 45)

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Common Features
• Interlaced Basalt/Carbon fiber reinforced IMPP cone
• Wide-roll, 3-layer fiber woven aramid radial surround with
honeycomb cloth
• Phenol coated glass cloth former
• Air Suspension System
• Dual 4 Ω, 4-layer, long voice coil (2 Ω or 8 Ω) • Extended and vented pole yoke
• Aluminum die-cast basket & magnet cover
The pride of a winner takes world-leading DNA
NEW
TS-W3002D4
30 cm (12") Component Subwoofer
3,500 W Max.
NEW
TS-W2502D4
25 cm (10") Component Subwoofer
3,000 W Max.
• Double stack high power magnets (3,230 g/114 oz.)
• Spoke grille compatible (UD-G308)
• Maximum input: 3,500 W
• Nominal input: 1,000 W • Double stack high power magnets (2,490 g/88 oz.)
• Spoke grille compatible (UD-G258)
• Maximum input: 3,000 W
• Nominal input: 800 W
Air Suspension System
TS-W3002D4 TS-W2502D4 TS-SW3001S4 TS-SW3001S2
Regular IMPP cone Long carbon fiber reinforced IMPP cone
Microscopic Cross Section View
For its revolutionary 3.25-inch-deep subwoofer, Pioneer created an air suspension system
effective within a 70 %-smaller-than-previous enclosure that locks air for a spring-like
effect between main and drive cones
moving in unison. The result is consistently
clear, powerful, wide-ranging bass
response. The subwoofer’s dual-cone
structure maintains better sound linearity
and reliability after hours of hard use than
conventional subwoofers with “spider”
structures to keep the voice coil aligned.
Air Suspension System for
Smaller Enclosure
70 % Smaller
Approximately 70 % smaller than previous enclosure.
Although aluminum die-cast baskets have been around for many years, not all are
created equal. Whereas other manufacturers purchase off-the-shelf designs, Pioneer’s
baskets were designed in-house, from scratch. Die-cast baskets also provide excellent
damping characteristics, to attenuate vibration quickly and prevent distortion.
Unlike other manufacturers’ designs, Pioneer’s basket cradles the bottom plate
and motor assembly. During high SPL levels there is a tremendous amount of pressure
placed on the motor assembly.
By supporting (cradling) the motor
assembly any unwanted flexing or
vibrations which can lead to energy
loss are prevented.
40.0
Impulse response
Aluminum die-cast basket
Re
al
Steel basket
–40.0
20 Avg 0 % Ovlp Hann
Fxd XY Sec. 200 m
Reduced backward motion
–40
dB
20 70 120 170 Hz
Conventional basket
Bottom hold basket
–50
–60
–70
–80
–90
Vibration Attenuation (Damping) Comparison
Improved Chassis Rigidness
Preventing cone failure at high pressure levels requires an extremely rigid yet lightweight
cone. So Pioneer developed a patent-pending IMPP cone using a proprietary composite
blend of long carbon fibers and injection molded polypropylene. These materials were
chosen for their extraordinary strength and lightweight characteristics. The long carbon
fibers interlace together to form an incredibly resilient fiber weave, providing strength
and rigidity for powerful bass.
The TS-W8102SPL, TS-W5102SPL, TS-W3002D4 and TS-W2502D4 incorporate a
patent-pending Woven Aramid Fiber Radial Surround which improves power
handling and reduces distortion. Similar to a radial tire, the surround is constructed
of three layers—two consisting of rubber and one of interwoven aramid fiber.
The aramid fiber layer is designed with a “honeycomb” weave, which evenly
distributes strength throughout the surround material, eliminating any weak
points of surround and improving high-power capability. The result is an
extremely durable and resilient surround that resists “puckering” (distortion
often produced under extreme power conditions).
Benefits of Woven Aramid Fiber Radial Surround
• Improved power handling capability • Reduced distortion (anti-puckering design)
• Improved linear excursion • Louder, more accurate bass
The three layers are formed under a high-pressure, high-temperature
process. The result: an extremely durable and high-performance surround.
Bottom Hold Design Aluminum Die-Cast
One-Piece Chassis
TS-C171PRS TS-C131PRS TS-W8102SPL TS-W5102SPL
Carbon Fiber IMPP Cone
TS-W8102SPL TS-W5102SPL
Woven Aramid Fiber Radial Surround
TS-W8102SPL TS-W5102SPL TS-W3002D4 TS-W2502D4
Caution: To avoid damaging your amplifier/subwoofer system, please make sure that the continuous power output of the amplifier is lower than the nominal power handling of the subwoofer.
TS-SW2501S4
TS-SW301 TS-SW251 TS-SW2501S2 TS-SW841D