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Sundown Audio Z-18 v.7 D2 18" (Z18V7D2)

7000W Peak (3500W RMS) 18" Z Series Dual 2-ohm Car Subwoofer (SW-ZV718D2)

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• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 2 ohm
• Treated Paper Cone
• Treated Foam Surround
• Sensitivity: 91.07 dB

Learn more about the zv718d2
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List price $1679.99
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Sundown Audio Z-18 v.7 D2 18" (Z18V7D2)

100% off


Priced separately $1,412 98

Promo Savings of $12 99

Total price:

$1,399 99

Description


Sundown Audio brand icon

Authorized dealer


Sundown Audio Z-18 v.7 D2

The Z v.7 is the third step up in Sundown's 2025 "ultra-high excursion" sub-woofer lineup after the M and X v.4 series. All models (12,15,18) feature custom tooled and patented frames – the Sundown "mega-platform". The Z v.7 motor also features a 9mm thick magnet ID Faraday ring which is locked into both the top and back plates. This ring combined with an all-new pole-extension inductance sleeve gives the Z v.7 the most linear inductive performance of any mega-platform sub-woofer to date. As if all of this were not enough to cement the Z v.7as a legend... Sundown Audio also made sure these subwoofers achieve 42mm of one-way linear excursion by 70% BL with an extremely uniform curve via extensively FEA optimized motor and 95mm long voice-coil winding length.


Product Details:

  • 18" Dual 2 ohm Z Series Subwoofer
  • Power Handling:
    • Peak: 7000 watts
    • RMS: 3500 watts
  • Treated Paper Cone
  • Treated Foam Surround
  • Features custom tooled and patented frames
  • Hyper-extended pole and extreme clearances
  • New patent-pending airflow-directing pole cap for enhanced cooling
  • Six pole outer-diameter airflow channels for increased ventilation
  • Sixteen gap vents to maximize heat dissipation from the coil
  • Cross-drilled and slotted top plate to maintain coil cooling
  • 9mm thick magnet-ID Faraday ring locked into both the top and back plates
  • All-new pole-extension inductance sleeve
  • Engineered to deliver the most linear inductive behavior
  • 95mm long voice-coil winding and an extensively FEA-optimized motor
  • 3.3" High Temperature Aluminum Voice coil
  • 4-layer round wire voice coil on thick aluminum former
  • 42 mm Xmax
  • Quad Stacked magnet motor structure
  • Resonance Frequency (Fs): 27.246 Hz
  • Sensitivity: 91.07 dB
  • Recommended ported box volume: 7.0 cubic feet
  • Cutout diameter: 16.68"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio Z-18 v.7 D2 18" (Z18V7D2) Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio Z-18 v.7 D2 18" (Z18V7D2) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Sundown Audio Z-18 v.7 D2 18" (Z18V7D2) Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio Z-18 v.7 D2 18" (Z18V7D2) Subwoofers

2 Channel Amp

4 Channel Amp


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Specifications & Details


Subwoofer Specifications
Series
Z Series
Subwoofer Size
18"
Peak Power Handling
7000 watts
RMS Power Handling
3500 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
2 ohm
Voice Coil Material
Aluminum
Voice Coil Diameter
3.3"
Sensitivity
91.07 dB
Xmax (millimeters)
42 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Treated Paper
Woofer Surround
Treated Foam
Magnet Structure
Quad Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Optimum Ported Box Volume
7.0 cubic feet
Cutout Diameter
16.68"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
27.246 Hz
Equivalent Compliance (Vas)
94.972 liters
Total Speaker Q Value (Qts)
0.421
Electrical Q Value (Qes)
0.451
Electrical Resistance of Voice Coil (Re)
3.97 ohm
Mechanical Q Value (Qms)
6.635
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

ZV718D2

Weight:

75.00lbs

Internal SKU:

zv718d2

Internal Product ID:

223410

Customer Ratings & Reviews


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