SKU: 32804353191

Sundown Audio - Z-Series Zv.7 18"

$1214.99 $1349.99
Save 10%
No.2 Bestseller on 2pierres.com >

Pay in installments of $337.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 30 - Aug 4

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Sundown Audio - Z-Series Zv.7 18"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 our custom tooled and patented frames (US Patent Numbers D691597, D691598, and D741841) the Sundown mega platform. Please note the Z v. 7 is not available, aside from special orders, in 10s due to the motor size. We mate these new platform frames to a quad stacked 265mm (10. 43) diameter motor

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 our custom tooled and patented frames (US Patent Numbers D691597, D691598, and D741841) – the Sundown “mega-platform.” Please note – the Z v.7 is not available, aside from special orders, in 10s due to the motor size.
We mate these new platform frames to a quad stacked 265mm (10.43”) diameter motor structure with a total magnet stack height of 100mm (3.94”) featuring a hyper-extended pole and extreme clearances (allowing over 4" p-p travel before mechanical bottom effectively making it bottomless). This is, by far, the largest motor we have ever produced on a Z series sub-woofer. The motor force factor (BL^2/RE) is ~50% higher than the previous generation Z v.6 series.
This motor drives a 3.3" diameter 4-Layer Round Wire Aluminum Voice Coil wound on a thick aluminum former. These new round wire coils use a special Sundown designed “fat wire” winding method to handle significant amounts of power and abuse.
Based on Sundown's years of experience with the Z v.4, 5, and 6 series we've also improved the voice coil ventilation yet again. The Z v.7 features an entirely new and patent-pending airflow directing pole cap, six pole OD channels, SIXTEEN gap vents, and a cross-drilled / slotted top plate to keep the voice coil running cool under extreme conditions.

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... we were also able to achieve 42mm of one-way linear excursion by 70% BL with an extremely uniform curve via our extensively FEA optimized motor and 95mm long voice-coil winding length.
The Z v.7 series was designed from the ground-up to become the new standard in the low-frequency / small, ported box sub-woofer category in this price range. They will work in the same enclosures that are commonly used for Sundown Audio's mega-platform sub-woofers.
The Z v.7 series, like its other mega-platform brethren, is really a different kind of woofer due to its incredibly linear suspension. They are designed for the LOWEST level of bass extension possible in a small enclosure while maintaining extremely low levels of distortion.

Dual 1-Ohm T/S Specs
RMS Power (D1)
3500
Peak Power (D1)
7000
RE-Ohms (D1)
2.03
Fs-Hz (D1)
23.483
Vas-L (D1)
98.844
Qes (D1)
0.462
Qms (D1)
6.282
Qts (D1)
0.433
Le-mH (D1)
2.038
BL-NA (D1)
23.588
Mms (D1)
858.079
Cms (D1)
53.531
Sensitivity-db @ 1w/1m (D1)
92.111
Xmax (D1)
42mm
Dual-2-Ohm T/S Specs
RMS Power (D2)
3500
Peak Power (D2)
7000
Re-Ohms (D2)
3.97
FS-Hz (D2)
27.246
Vas-L (D2)
94.972
Qes (D2)
0.451
Qms (D2)
6.365
Qts (D2)
0.421
Le-mH (D2)
4.026
BL-NA (D2)
33.742
Mms-Grams (D2)
756.359
Cms-uM/N (D2)
45.112
Sensitivity-dB @ 1w/1m (D2)
91.07
Xmax (D2)
42mm
Subwoofer Measurements
Displacement (Inches)
0.34 cu ft
Depth (Inches)
15.61
Cutout (Inches)
16.68"
Motor Diameter (Inches)
10.8
Ported Enclosure Specs
Ported Enclosure Size
7.0cu ft
Recommended Port Area
100sq in
Sealed Enclosure Specs
Sealed Enclosure Size
Not Recommended
4th Order Enclosure Specs
4th Order Sealed Side
3.0cu ft
4th Order Ported Side
9.0cu ft
4th Order Port Area
180sq in
4th Order Port Length
8"
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32804353191

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 14 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Andres Rivera
Belleville, US
★★★★★ 5
Nice book
Format: Paperback
Nice historical book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
C
Verified Purchase
CBRNCougar59
Cuba, US
★★★★★ 3
Poor Editing - header misprint
Format: Paperback
Chapter 3 - 'Manipulation of Risk' header mislabeled as chapter 2
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2023
D
Verified Purchase
DiBeth
San Leandro, US
★★★★★ 5
Wow!
Format: Paperback
I do not understand how the authors got so much information so comprehensibly into such a short book. It's 272 pages but it felt so short because the information is jam-packed in there and presented so well. It's one thing to know your stuff, it's a whole other ballgame to present it so people (without the level of training the author's have) can dive deep and really understand what you're saying and these authors nailed it. Great book, so interesting and easy to read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
J
Verified Purchase
John M. Ford
Grantham, US
★★★★★ 5
"Don't Practice on Your Significant Other"
Format: Kindle
This book's authors have many years of experience interviewing CIA assets, CIA employees, and a variety of ordinary people in non-CIA settings. Their specialty is in determining when someone is lying. And they are good at it. This skill in detecting deception has done a lot of good, helping their clients make better decisions about hiring the right new employee, trusting the right baby sitter, and prosecuting the person who really "did it." Sometimes the skills bring pain, making clear that the waiting doctor's politeness covers bad news or that a spouse isn't really joking about "her boyfriend." Still, it's better to know, isn't it? Detecting deception isn't magic and it isn't infallible. But it is possible to become better at it than most of us are now. The book identifies several barriers to accurately detecting deception. We expect most people to tell the truth, we ask the wrong questions, and we look for the wrong "tells" in other people's behavior. And we try to watch everything they do instead of focusing on a small number of reliable indicators. Such reliable indicators of deception include certain kinds of verbal hesitations and evasions as well as specific body movements of which a deceiver is largely unaware. Readers learn to ask questions that require different mental processing from guilty versus innocent suspects. One technique is to ask questions a good guy will answer with an immediate--and perhaps angry--"No!" while the bad guy will need to give a longer, more carefully worded response. We watch for deception indicators that begin in the first five seconds after a question. And we look for clusters of indicators rather than for single actions. There is more to it, of course, but this is the core methodology the book presents. It's good stuff. And it's learnable. I attended a training session conducted by the authors' company (QVerity, in partnership with hemsleyfraser) this week. I had listened to roughly three-quarters of the audiobook during a long car ride the day before. Based on what I learned from the book I was able to do well in the video pre-test, successfully distinguishing a lying suspect from the four who told the truth. Almost everyone was also able to do this after two hours of training. So it seems to me that the book is nearly as valuable as being taught these skills by the authors themselves. It is a well-written, fascinating book on a very useful topic. I highly recommend it. A final comment. The book closes with a warning to use these skills only for good. And to not practice them on our significant others. Apparently catching your spouse in all of those little white lies can put unnecessary stress on the relationship. I may have made a variation of this error by giving my wife a copy of the book and inviting her along to the training. Not sure that was such a good idea. We'll see.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 20, 2012
B
Verified Purchase
Bernice Tett
Alexandria, US
★★★★★ 4
My honest review of the book . Spy The Lie
Format: Paperback
Spy the Lie" by Philip Houston is a practical and fascinating guide that teaches you how to spot deception using the same proven techniques developed by the CIA. Instead of looking for unreliable body language "clues," it focuses on identifying specific verbal and non-verbal behaviors that people show when they are feeling the stress of a lie. It’s written in very clear, everyday language with plenty of real-world examples, making it a great tool for anyone who wants to communicate more effectively and know who they can really trust.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026

recommand products

GB KRAMPLAAT DUBBELZIJDIG GETAND _33 TV 95
118.58
GB HOEKANKER 50X110 SV 60X3
95.09
GB XS-HOEK 100X150 ZM 72X5
114.34
GB KOZIJNSTELHOEK XL 150X200/ 175 ZM S350 72X5/60X5
138.78
Bosch X-LOCK INOX 10X125X1.6X22.23MM SLIJPSCHIJF
13.22