HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Various Holden & GM Models | 3Ω
HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Various Holden & GM Models | 3Ω is backordered and will ship as soon as it is back in stock.
Pickup available at MC Audio
Usually ready in 1 hour
Delivery and Shipping
Delivery and Shipping
Order processing time
In stock items
Orders for in-stock items are processed within 1 – 5 business days (excluding weekends and holidays) after receiving your order confirmation email. You will receive another notification when your order has shipped.
Pre-order
If you have placed an order for a pre-order item, please note that your order will not be processed until the release date of the product. We will process your order and ship it to you as soon as the product becomes available.
For any questions or concerns about your pre-order feel free to contact us at any time.
Items availability
If you have ordered multiple items, including pre-order items, we will hold your order until all items are available for shipment. If you wish to receive your in-stock items sooner, please place a separate order for those items.
We may cancel your order if the item(s) is out-of-stock and is no longer available. You will receive an email if your complete order is canceled.
In the situation that part of your order is out-of-stock, we will remove the out-of-stock item(s) from your order and we will ship the remaining item(s). You will not be charged for out-of-stock items ordered, and will be informed by an email notification.
If any items in your order require customization or are on backorder, we will contact you with an estimated delivery date.
Tracking your order
Once your order has been shipped, you will receive a shipping confirmation email with a tracking number. You can use the tracking number to monitor the status of your shipment.
HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Va...
HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Various Holden & GM Models | 3Ω is backordered and will ship as soon as it is back in stock.
HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Various Holden & GM Models | 3Ω
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Overview
Upgrade compatible Holden and General Motors (GM) factory door speakers with the HELIX COMPOSE Ci3 6.5-inch Speaker Upgrade, a vehicle-specific solution designed to improve midbass reproduction while retaining the original factory speaker locations.
Featuring HELIX Ci3 165 mm door woofers with 3Ω nominal impedance, this upgrade provides an alternative to factory speakers in selected Holden and GM vehicles.
The HELIX COMPOSE Ci3 platform is designed for high-quality automotive sound reproduction, delivering controlled midbass performance and greater musical detail when correctly integrated with a compatible audio system.
This package targets the original door woofer positions, making it suitable for drivers seeking a focused speaker upgrade without necessarily replacing their existing head unit or entire audio system.
Key Benefits
-
Holden and GM-specific application — intended for compatible factory door speaker locations.
-
HELIX COMPOSE Ci3 technology — premium automotive speaker platform.
-
165 mm / 6.5-inch woofer format — dedicated to midbass and lower-midrange reproduction.
-
3Ω nominal impedance — for integration with electrically compatible factory or aftermarket amplification.
-
Factory speaker replacement — designed to upgrade the original door woofer positions.
-
Targeted audio improvement — supports improved midbass definition and sound quality.
-
Flexible system integration — can complement compatible factory audio systems or aftermarket audio upgrades.
Please Read Before Purchasing
This package is intended for various compatible Holden and GM models, not every vehicle produced by these manufacturers.
Factory speaker dimensions, mounting arrangements, wiring connections and amplifier configurations may differ between models, production years and trim levels.
Before purchasing, confirm your vehicle's exact model, year, factory audio system and speaker mounting requirements.
A nominal speaker impedance of 3Ω does not automatically guarantee compatibility with every factory amplifier.
Depending on the vehicle, additional mounting components, wiring adapters or installation work may be required.
Installation fees are not included in the online product price.
Who This Package Is For
This package is designed for Holden and GM owners seeking to replace compatible factory 6.5-inch door woofers with premium HELIX Ci3 speakers.
It is particularly suitable for customers who want more defined midbass reproduction while retaining their existing head unit and other audio components, provided the system is compatible.
Installation & Tuning Notes
Installation involves removing the original factory door woofers and fitting the replacement HELIX Ci3 speakers using the appropriate vehicle-specific mounting arrangement.
Before installation, verify speaker mounting dimensions, door clearance, factory wiring polarity and amplifier compatibility.
Where an aftermarket DSP amplifier is installed, recalibration may help optimise the replacement speakers' frequency response, crossover settings and integration with the remaining audio system.
Professional installation is recommended to ensure secure mounting, correct electrical connections and suitable acoustic performance.
Professional Installation at MC Audio Sydney
Professional installation is available through MC Audio Sydney. Customers can purchase this package online and contact our Sydney workshop for a complete installation quote.
📦 Available online from MC Audio Sydney. Genuine components supplied by a professional car audio integration specialist, with expert installation services in Sydney and Australia-wide shipping available.
HOLDEN 6.5" Speaker Upgrade - HELIX Ci3 Door Woofer to Suit Various Holden & GM Models | 3Ω
Mechatronicar Audio
