🔥 Limited Time — $100 Off · Sale Price $979.98 · Regular $1,079.98
Saint Nordic · Bass Packages
SINGLE 10"
IRIDIUM KIT.
A complete Ground Zero Iridium bass system — subwoofer, amplifier, sealed enclosure, signal interface, amp kit, and professional installation — everything you need for clean, powerful daily bass.
Regular Price
$1,079.98
✓ Save $100
Installed package pricing · Includes everything listed below · Professional installation at Saint Nordic
Everything Included
6 Items
Complete System Package
EVERYTHING
INCLUDED.
The Iridium Kit is a curated, complete bass system built on Ground Zero's Iridium series — their proven, reliable entry into high-quality car audio. Every component was selected to work together — matched power levels, proper signal handling, correct wiring gauge, and a sealed enclosure tuned for the subwoofer. Nothing to source separately. Nothing left to figure out.
Subwoofer
Ground Zero Iridium 10" Subwoofer
GZIW 250 S4
250W RMS · Single 4-ohm voice coil · 50mm copper voice coil · Klippel® optimized · 3D HQPP cone · Long-stroke rubber surround · Solid aluminum cast basket · 25mm Xmax
Amplifier
Ground Zero Iridium Mono Amplifier
GZIA 500.1
Up to 500W RMS · Class D · Variable crossover · Bass boost · High-level input with auto-on · Bass remote included · Compact chassis
Enclosure
Sealed Subwoofer Enclosure
Custom Fit
Sealed enclosure matched to the GZIW 250 S4 for tight, accurate bass response. Sealed design provides better power handling and more precise low-frequency control than ported alternatives.
Signal Interface
Wavtech Link2 Signal Interface
LINK2
High-to-low level signal converter that takes your factory or aftermarket head unit's speaker output and converts it to a clean, noise-free RCA signal for the amplifier. Eliminates alternator whine and signal noise.
Wiring
4-Gauge Amplifier Wiring Kit
4GA Kit
Correctly sized 4-gauge power and ground wiring for the GZIA 500.1's power requirements. Proper gauge wire ensures full power delivery to the amplifier without voltage drop under load.
Installation
Professional Installation
Saint Nordic
Full professional installation by Saint Nordic Custom Autoworks — amplifier mounting, subwoofer installation, signal interface setup, wiring routed and secured, system tuned before delivery. 1-year labor warranty included.
Why This Kit
MATCHED.
TUNED. DONE.
The Iridium Kit isn't a collection of random components thrown together — it's a system where every piece was selected because it works correctly with everything else. The amplifier is sized correctly for the subwoofer. The signal interface eliminates the noise problems that kill factory system integration. The wiring is the right gauge for the power level. And the sealed enclosure is matched to the sub's specs for the response curve it was designed to deliver.
670W
RMS @ 2 Ohms — GZIA 500.1
Ground Zero Iridium GZIW 250 S4 — 250W RMS · Klippel® optimized
GZIA 500.1 — Class D · 1-ohm stable · GZ-PowerBalance
Wavtech Link2 — clean signal from any head unit, factory or aftermarket
4GA amp kit — correct gauge for full power delivery
Sealed enclosure — tight, accurate bass · matched to sub specs
Professional install + 1-year labor warranty · Saint Nordic
Component Specifications
TECHNICAL
DETAILS.
Ground Zero GZIW 250 S4 — Subwoofer
Power Handling
250W RMS · 400W Max
Impedance
Single 4-ohm (4Ω)
Voice Coil
50mm / 2" copper voice coil
Cone
3D HQPP cone · Long-stroke rubber surround
Basket
Solid aluminum cast basket
Optimization
Klippel® optimized
Ground Zero GZIA 500.1 — Amplifier
RMS @ 4Ω
Contact us for full spec sheet
Frequency Response
10–250 Hz
Crossover
Variable active LPF · Bass boost
Input
High-level input with auto-on function
Features
GZ-PowerBalance regulation · Triple protection circuit · Bass remote included
Package Contents
Subwoofer
Ground Zero GZIW 250 S4 10" — 250W RMS
Amplifier
Ground Zero GZIA 500.1 — 670W RMS @ 2Ω
Enclosure
Sealed subwoofer enclosure
Signal Interface
Wavtech Link2
Wiring
4-gauge amplifier wiring kit
Installation
Professional installation by Saint Nordic — 1-year labor warranty
Sale Price
$979.98 installed (regular $1,079.98 — save $100)
Saint Nordic Custom Autoworks
BOOK YOUR
INSTALL TODAY.
The Single 10" Iridium Kit — $979.98 installed at Saint Nordic Custom Autoworks in Spring Lake Park, MN. Everything included. Professional installation. 1-year labor warranty.
