2014-2023 Harley-Davidson Road & Street Glide 4-Speaker Audio System | DS18 / Cerwin-Vega

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2014-2023 Harley-Davidson Road & Street Glide 4-Speaker Audio System | DS18 / Cerwin-Vega

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Motorcycle Audio

2014-2023 Harley-Davidson Road & Street Glide 4-Speaker Audio System | DS18 / Cerwin-Vega

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2014-2023 HARLEY-DAVIDSON FOUR-SPEAKER SYSTEM

Road Glide & Street Glide Plug-and-Play Audio System

Upgrade a compatible 2014-2023 Harley-Davidson Road Glide or Street Glide with a complete four-speaker package built around DS18 amplifier power, hybrid front speakers and Cerwin-Vega 6×9 saddlebag speakers.

The factory-radio signal connection is handled through a DS18 plug-and-play harness. Select the correct motorcycle before ordering so the package can be configured with the proper fairing-specific amplifier mounting solution.

Complete Front and Rear Audio Upgrade

  • Road Glide and Street Glide options
  • Designed for compatible 2014-2023 Harley Touring models
  • DS18 ION1600.4D four-channel amplifier
  • 240 watts RMS × 4 channels at 4 ohms
  • Two DS18 PRO-HY6.4MSL front speakers
  • Two Cerwin-Vega ST69CX 6×9 rear speakers
  • Four 4-ohm speaker channels
  • Factory Harley radio integration harness
  • 4-AWG amplifier power wiring
  • Cut-in saddlebag lid installation system

Complete Harley Audio System Overview

This Garage Bagger Stereo package combines the front fairing speakers, rear saddlebag speakers, four-channel amplifier, factory-radio interface, power wiring and motorcycle-specific mounting components required for a complete 2014-2023 Harley-Davidson Touring audio upgrade.

Two DS18 PRO-HY6.4MSL hybrid loudspeakers upgrade the front fairing locations. Each speaker combines a 6.5-inch midrange driver with an integrated titanium compression driver to produce strong vocal clarity and high-frequency projection in open-air riding conditions.

The Cerwin-Vega cut-in lid system adds two ST69CX 6×9 speakers to the factory saddlebag lids. All four speakers connect to individual channels of the DS18 ION1600.4D amplifier.

Important installation distinction: The factory-radio interface is plug-and-play, but the rear-speaker installation is not cutting-free. Both compatible factory saddlebag lids must be permanently cut using the supplied templates.

Road Glide and Street Glide Fitment

Road Glide Option

Select Road Glide for a compatible 2014-2023 sharknose-fairing motorcycle. The package must include the amplifier mounting solution configured for the Road Glide fairing.

Street Glide Option

Select Street Glide for a compatible 2014-2023 batwing-fairing motorcycle. The package must include the amplifier mounting solution configured for the Street Glide fairing.

Factory-radio application: The included DS18 RY-HARNESS.HD is designed around compatible factory Harley-Davidson radio integration. Aftermarket-radio installations may require a different signal and remote-turn-on configuration.
  • Confirm the motorcycle year and exact model.
  • Select Road Glide or Street Glide before adding the kit to the cart.
  • Confirm that the motorcycle retains a compatible factory radio.
  • Identify any factory amplifier or CVO audio equipment before ordering.
  • Verify that the motorcycle has compatible factory saddlebag lids.

Everything Included in the System

DS18 ION1600.4D Amplifier

One compact four-channel full-range Class-D amplifier rated for 240 watts RMS × 4 at 4 ohms.

Two DS18 PRO-HY6.4MSL Speakers

Two 6.5-inch 4-ohm hybrid loudspeakers with built-in 1-inch titanium compression drivers for the front fairing.

DS18 RY-HARNESS.HD

Factory-radio plug-and-play interface with four-channel RCA outputs, integrated high-to-low conversion, OFC wiring and amplifier remote turn-on.

4-AWG Amplifier Power Kit

Heavy-gauge amplifier power and ground wiring with the protection and installation hardware configured for the package.

Bike-Specific Amplifier Mounting

The package is configured with a Road Glide or Street Glide mounting solution according to the motorcycle selected at checkout.

Cerwin-Vega 6×9 Lid Kit

One pair of 4-ohm ST69CX 6×9 speakers with cut-in lid grilles, left and right templates, half-inch spacers and speaker wiring.

Confirm current package contents: Product substitutions or mounting-hardware changes should be reflected in the Shopify variant and fulfillment notes before the order is released.

Speaker Impedance and Amplifier Channel Configuration

Front Fairing Channels

Each DS18 PRO-HY6.4MSL front speaker presents a nominal 4-ohm load to its assigned amplifier channel.

Rear Saddlebag Channels

Each Cerwin-Vega ST69CX rear speaker presents a nominal 4-ohm load to its assigned amplifier channel.

Channel 1
Front-left PRO-HY6.4MSL — 4Ω
Channel 2
Front-right PRO-HY6.4MSL — 4Ω
Channel 3
Rear-left ST69CX — 4Ω
Channel 4
Rear-right ST69CX — 4Ω
Amplifier Output at 4Ω
240 watts RMS per channel
Front Speaker Rating
150 watts RMS per speaker
Rear Speaker Rating
125 watts RMS per speaker
Unused Amplifier Channels
None
Output must be limited: The ION1600.4D can produce more continuous power at 4 ohms than either included speaker model is rated to handle. Correct gain, high-pass crossover and maximum clean output settings are required.

DS18 ION1600.4D Four-Channel Amplifier

The ION1600.4D is a compact full-range Class-D amplifier with high-level and RCA inputs, adjustable filtering, a cooling fan and power, protection and clipping indicators.

240W × 4 at 4Ω

Published output for the four included 4-ohm speaker channels.

400W × 4 at 2Ω

Available for separately designed compatible 2-ohm systems.

800W × 2 Bridged

Published bridged output into compatible 4-ohm loads.

Adjustable Crossovers

Selectable low-pass, high-pass and full-range operating modes.

Clip Indicator

Visual clipping indication assists with measured gain setup.

Compact Motorcycle Installation

Small chassis with vibration-resistant surface-mount construction.

Amplifier Model
DS18 ION1600.4D
Amplifier Type
Four-channel full-range Class-D amplifier
Output at 4Ω
240W RMS × 4
Output at 2Ω
400W RMS × 4
Bridged Output at 4Ω
800W RMS × 2
Frequency Response
10Hz–20kHz
Signal-to-Noise Ratio
Greater than 95dB
Input Range
0.2–6V
Crossover Modes
LPF / HPF / FULL
Crossover Range
40Hz–2kHz
Minimum Impedance
2Ω stereo / 4Ω bridged
Power Input
4-AWG
Published External Fuse
140A
Cooling Fan
Yes
Dimensions
7.32 × 4.72 × 2 inches / 186 × 120 × 52mm

DS18 PRO-HY6.4MSL Front Fairing Speakers

The PRO-HY6.4MSL combines a slim 6.5-inch midrange driver with a built-in 1-inch titanium compression driver. This hybrid construction provides midrange and high-frequency output from one compact speaker.

Speaker Model
PRO-HY6.4MSL
Quantity
Two speakers
Nominal Size
6.5 inches
Impedance
4Ω per speaker
Power Handling
150W RMS / 300W maximum per speaker
Frequency Response
100Hz–20kHz
Sensitivity
97dB
Compression Driver
1-inch titanium diaphragm
Speaker Cone
Water-resistant treated paper
Weather Rating
IP65
Mounting Depth
2.82 inches / 72mm
Check fairing clearance: Speaker pod modification, spacing or other installation adjustments may be required depending on the motorcycle model, factory enclosure and existing components.

Cerwin-Vega ST69CX 6×9 Saddlebag Speakers

The rear system uses one pair of Cerwin-Vega ST69CX 4-ohm 6×9 coaxial speakers. The cut-in kit converts compatible factory saddlebag lids into rear speaker locations without requiring replacement painted lids.

Speaker Model
Cerwin-Vega ST69CX
Quantity
Two speakers / one pair
Speaker Size
6×9 inches
Speaker Design
Two-way high-output coaxial speaker
Impedance
4Ω per speaker
Power Handling
125W RMS / 250W maximum per speaker
Tweeter
Titanium dome
Sensitivity
93.5dB
Mounting Depth
3.875 inches
Included Lid Components
Grilles, templates, half-inch spacers and speaker wiring
Water-resistant, not waterproof: Protect the speakers from direct heavy water exposure and follow the manufacturer’s care instructions.

Factory Radio Integration

The DS18 RY-HARNESS.HD connects to compatible 2014-2023 Harley-Davidson factory-radio wiring and supplies the low-level signal and remote turn-on needed for aftermarket amplifier integration.

Four RCA Outputs

Provides four low-level channels for the four-channel amplifier.

Integrated Conversion

Built-in load resistors and high-to-low conversion condition the factory signal.

Remote Turn-On

Supplies amplifier activation when the compatible factory radio turns on.

  • Factory harness connection without cutting the radio signal wiring
  • Four-channel RCA pre-output
  • Oxygen-free copper wiring
  • Noise-rejecting RCA construction
  • Water-resistant harness construction
  • Compatible factory-radio applications only

Saddlebag Lid Installation

The supplied cut-in kit uses model-specific left and right templates to create the 6×9 speaker openings in compatible factory saddlebag lids. The grilles and half-inch spacer rings complete the visible installation.

  • Remove and inspect both saddlebag lids before cutting.
  • Confirm template orientation for the left and right lids.
  • Check speaker depth and electrical-lock clearance.
  • Confirm hinge, tether and weather-seal clearance.
  • Route the rear-speaker wiring before final assembly.
  • Seal and protect all cut edges after modification.
  • Test speaker polarity before reinstalling the lids.
Permanent modification: Cutting the factory saddlebag lids is irreversible. Professional installation is recommended when the installer is not experienced with Harley-Davidson lid conversions.

Amplifier Setup and Speaker Protection

The amplifier has significantly more available power at 4 ohms than the included front and rear speakers are rated to handle continuously. Measured setup is essential to prevent damage.

  • Connect one speaker to each amplifier channel.
  • Set the amplifier channels to high-pass operation.
  • Set separate front and rear gains when the amplifier layout permits.
  • Use measured clean voltage rather than setting gain by ear.
  • Do not use the amplifier gain control as a volume control.
  • Watch the clipping indicator during setup.
  • Reduce output immediately if distortion or mechanical noise is heard.
  • Confirm the correct external fuse near the battery.
  • Evaluate battery and charging-system condition before high-output use.

Complete System Specifications

Vehicle Application
Compatible 2014-2023 Harley-Davidson Road Glide or Street Glide
Motorcycle Options
Road Glide or Street Glide
Radio Application
Compatible factory Harley-Davidson radio
Amplifier
DS18 ION1600.4D
Amplifier Output
240W RMS × 4 at 4Ω
Front Speakers
Two DS18 PRO-HY6.4MSL 6.5-inch hybrid speakers
Rear Speakers
Two Cerwin-Vega ST69CX 6×9 coaxial speakers
Speaker Impedance
4Ω per speaker
Loaded Amplifier Channels
All four channels at 4Ω each
Factory Radio Harness
DS18 RY-HARNESS.HD
Power Wiring
4-AWG amplifier installation kit
Amplifier Mounting
Bike-specific Road Glide or Street Glide mounting solution
Rear Mounting
Cerwin-Vega 6×9 cut-in saddlebag lid system
Saddlebag Cutting Required
Yes
Built-In DSP
No

Fitment and Ordering Notes

Submit the complete motorcycle information: Confirm the year, exact model, Road Glide or Street Glide fairing, factory radio, factory amplifier configuration and current speaker locations.
  • Select Road Glide or Street Glide before ordering.
  • The included radio harness is intended for compatible factory radios.
  • Two front and two rear speakers are included.
  • All four included speakers are 4 ohms.
  • All four amplifier channels are used.
  • The amplifier does not include built-in DSP.
  • Front speaker pod modification or spacing may be required.
  • Both factory saddlebag lids require permanent cutting.
  • Correct amplifier gain and crossover setup are required.
  • Professional installation is strongly recommended.

Best For

  • 2014-2023 Harley-Davidson Road Glide audio upgrades
  • 2014-2023 Harley-Davidson Street Glide audio upgrades
  • Riders keeping a compatible factory Harley radio
  • Four-speaker front-and-rear audio systems
  • Motorcycles using factory saddlebag lids
  • High-output highway audio builds
  • Professional motorcycle audio installations

Related Motorcycle Audio Categories

Harley Four-Speaker Audio System FAQ

Which motorcycles does this system fit?

It is configured for compatible 2014-2023 Harley-Davidson Road Glide and Street Glide motorcycles. Select the correct fairing style before ordering.

How many speakers are included?

Four speakers are included: two DS18 6.5-inch front speakers and two Cerwin-Vega 6×9 rear saddlebag speakers.

What impedance are the speakers?

All four included speakers have a nominal impedance of 4 ohms.

How much power does the amplifier produce?

The ION1600.4D produces 240 watts RMS × 4 at 4 ohms, 400 watts RMS × 4 at 2 ohms or 800 watts RMS × 2 bridged at 4 ohms.

Does the amplifier include DSP?

No. The ION1600.4D provides conventional gain and crossover controls but does not contain an integrated digital signal processor.

Does this work with the factory Harley radio?

The included RY-HARNESS.HD is designed to integrate the amplifier with compatible 2014-2023 factory Harley-Davidson radios.

Does the factory radio wiring need to be cut?

The compatible factory-radio signal connection uses the plug-and-play DS18 harness and does not require cutting the factory signal wiring.

Do the saddlebag lids need to be cut?

Yes. Both compatible factory saddlebag lids must be permanently cut to install the Cerwin-Vega 6×9 lid system.

Are the speakers waterproof?

The DS18 front speakers are IP65 rated, and the Cerwin-Vega rear speakers are water resistant. They should not be represented as submersible or completely waterproof.

Why does the amplifier need careful gain setup?

The amplifier can produce more continuous power per channel than the included speakers are rated to handle. Gain and crossover settings must limit clean output to safe levels.

Is a Road Glide amplifier rack included with the Street Glide version?

No. The mounting solution must match the selected motorcycle. The Road Glide and Street Glide versions require different fairing-specific mounting configurations.

Is professional installation recommended?

Yes. The package requires amplifier wiring, measured gain setup, fairing work and permanent saddlebag lid modification.

Need Help Matching This Harley Audio System?

Garage Bagger Stereo can help verify motorcycle fitment, speaker impedance selection, amplifier matching, fairing and saddlebag mounting, power and speaker wiring, and factory-radio signal integration before installation.

need help deciding?

Speak now to one of our sales consultants or support team.

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