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Hertz HSP1-24 A2B

2-Speaker Front Audio Upgrade Kit for select 2024-2025 vehicles from Harley Davidson Includes 6.5" 2-Way Coaxial 4-ohm Speakers and 4-Channel Amplifier and A2B Interface Module

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• System includes 6.5" coaxial speakers and 4-channel amplifier
• Also includes A2B interface module
• Compatible with select 2024-2025 vehicles from Harley Davidson
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

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List price $2595.00
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Description


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Authorized dealer


Hertz HSP1-24 A2B

This Hertz Harley-Davidson audio upgrade delivers bold, high-output sound with 6.5" coaxial speakers powered by a compact 4-channel amplifier, all designed to fit perfectly in factory fairing locations. Featuring a plug-and-play wiring harness and advanced HD A2B interface module, it seamlessly integrates with the bike’s factory infotainment system while retaining key features like fader control, DSP settings, and navigation prompts—giving you a clean, powerful, and fully compatible audio enhancement built for the ride.


Product Details:

  • System includes 6.5" coaxial speakers and 4-channel amplifier
  • Also includes amplifier wiring harness and interface module for direct installation
  • Designed for Harley-Davidson's front or fairing speaker locations
  • Engineered to match and compliment the factory fit and finish of your vehicle
  • Plug and Play design for easy installation
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
  • Compatible with select 2024-2025 vehicles from Harley Davidson

Hertz SX 165 NEO 6.5" Coaxial Speakers

  • 6.5" SPL Show Series Coaxial Speakers
  • Power Handling:
    • Peak: 400 watts per pair / 200 watts each
    • RMS: 200 watts per pair / 100 watts each
  • Water-repellent Pressed Paper cone material
  • Rubber speaker surround material
  • 1.4" PEI (Polyetherimide) Dome tweeters with N38H neodymium magnets
  • Resettable solid-state tweeter protection circuit
  • 1.5" double-layer copper voice coil, wound on polyamide former
  • Special Neodymium N38 H magnet motor structure
  • Double fast on terminals for daisy-chaining of multiple units
  • Impedance: 4 ohm
  • Frequency Response: 100 - 20000 Hz
  • Sensitivity: 96.5 dB
  • MFR #: SX 165 NEO

Hertz SP 4.900 4-Channel Amplifier

  • Class D 2 ohm Stable 4-Channel Amplifier
  • Power Specifications
    • 4 ohm: 160 watts x 4 channel
    • 2 ohm: 250 watts x 4 channel
    • Bridged @ 4 ohm: 500 watts x 2 channel
  • Total RMS power output: 1000 watts
  • LED Power/Protect Light
  • CEA-2006 compliant amplifier
  • Ultra-compact size for easy installation
  • IP55 dust- and water-protection rating
  • Pulse Width Modulated MOSFET power supply
  • Speaker-level (high-level) inputs
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Frequency Response: 10 - 35000 Hz
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: 105 dB
  • Variable low-pass filter: 50 - 5000 Hz
  • Variable high-pass filter: 50 - 5000 Hz
  • Variable Bass Boost: 0 - 8 dB
  • MFR #: SP 4.900

Hertz HD A2B Interface Module

  • Replaces factory amplifier
  • Includes easy plug and play connection cable
  • Uses the same A2B chip for seamless integration into the original system
  • Supports factory infotainment updates
  • Retains fader, EQ selection with DSP profiles, speed-controlled volumes
  • Also retains navigation announcement features
  • Built-in 31-band equalizer with 7-band parametric global equalizer
  • MFR #: HD A2B

Hertz HHP 14 Power and Ground Wiring

  • Power and ground wiring cable
  • Made with high-quality copper wire construction
  • Color coded wires for easy installation
  • Plug and play wires, no cutting or modification required
  • MFR #: HHP 14

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 1997 Audi A4 Quattro is not compatible. Change vehicle or See list of compatible similar products


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Specifications & Details


Front Speaker Specifications
Speaker Size
6-1/2"
Design
2-way Coaxial
Shallow Mount Installation
No
Tweeter Design
Dome
Tweeter Composition
PEI (Polyetherimide)
Woofer Composition
Water Resistance Paper
Woofer Surround
Rubber
Peak Power Handling
200 watts
RMS Power Handling
100 watts
Sensitivity
96.5 dB
Frequency Response
100 - 20000 Hz
Impedance (Per Voice Coil)
4 ohm
Top-Mount Depth (Mounting Depth)
2.28"
Amplifier Power Specifications
RMS Power @ 4 ohms
160 watts x 4 channel
RMS Power @ 2 ohms
250 watts x 4 channel
Bridged RMS Power
500 watts x 2 channel
Amplifier Specifications
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
1000 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
1%
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
50 - 5000 Hz
Low-Pass Crossover Frequency
50 - 5000 Hz
Signal-to-Noise Ratio
105 dB
Bass Boost
0 - 8 dB
Remote bass/level controller
No
Fan Cooled
No
Fuse Rating
50A x 1 
CEA-2031 Compliant
No
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Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

HSP1-24A2B

Weight:

20.00lbs

Internal SKU:

hsp124a2b

Internal Product ID:

228310

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.