Hertz Audio

Hertz Audio is an Italian electronics brand with a serious reputation in car and motorcycle audio — known for tight engineering tolerances, consistent output, and products that measure as well as they sound. The Hertz HMX series is designed specifically for motorcycle use: compact amplifiers, DSP units, and speakers sized and rated for the heat, vibration and power demands of a Touring bike install.

The Hertz range for Harley-Davidson covers three common upgrade paths: the HMX amplifier series for riders who want to drive their speakers harder, the H8 DSP Amplifier for builds that need both power and full tuning control in a single unit, and the HMX speaker range for riders who want a fully integrated Hertz system. All Hertz components are selected by MAA for confirmed compatibility with the Harley Touring platform.

Hertz products occupy the middle-to-upper tier of what MAA stocks — well above the generic motorcycle audio bracket, and matched in price and performance with Cicada and Precision Power for different build priorities. If you're deciding between brands for a specific setup, call us. Ships Australia-wide and to New Zealand.

Speakers

Hertz SX 165 NEO – 6.5" Full-Range Coaxial Speaker

Hertz SX 165 NEO – 6.5" Full-Range Coaxial Speaker

Hertz SX 165 NEO – 6.5" Full-Range Coaxial Speaker

$420.00
6.5 · Coaxial · 4 Ohm
120W RMS
1998-20132014-20232024+
FairingLower Fairing
Hertz SX 200 NEO – 8" SPL Coaxial Speaker

Hertz SX 200 NEO – 8" SPL Coaxial Speaker

Hertz SX 200 NEO – 8" SPL Coaxial Speaker

$890.00
8 · Coaxial · 4 Ohm
160W RMS
1998-20132014-20232024+
Lower FairingSaddlebags
Hertz SV 200 L – 8" SPL Mid-Bass Driver

Hertz SV 200 L – 8" SPL Mid-Bass Driver

Hertz SV 200 L – 8" SPL Mid-Bass Driver

$440.00
8 · Mid-bass · 4 Ohm
1998-20132014-20232024+
Hertz SV 165.1 – 6.5" SPL Midrange Speaker

Hertz SV 165.1 – 6.5" SPL Midrange Speaker

Hertz SV 165.1 – 6.5" SPL Midrange Speaker

$335.00
6.5 · Midrange · 4 Ohm
150W RMS
1998-20132014-20232024+
FairingLower Fairing
Hertz SX 690 H – 6×9" 3-Way Coaxial Speakers

Hertz SX 690 H – 6×9" 3-Way Coaxial Speakers

Hertz SX 690 H – 6×9" 3-Way Coaxial Speakers

$610.00
6x9 · Coaxial · 4 Ohm
150W RMS
1998-20132014-20232024+
Saddlebags
Hertz SV 165 NEO – 6.5" SPL Neodymium Midrange Speaker

Hertz SV 165 NEO – 6.5" SPL Neodymium Midrange Speaker

Hertz SV 165 NEO – 6.5" SPL Neodymium Midrange Speaker

$334.00
6.5 · Midrange · 4 Ohm
150W RMS
1998-20132014-20232024+
FairingLower Fairing

Amplifiers

Hertz SP4.500 — Advanced 4-Channel Class-D Motorcycle Amplifier (520W RMS / 130W x4 @ 2Ω)

Hertz SP4.500 — Advanced 4-Channel Class-D Motorcycle Amplifier (520W RMS / 130W x4 @ 2Ω)

Hertz SP4.500 — Advanced 4-Channel Class-D Motorcycle Amplifier (520W RMS / 130W x4 @ 2Ω)

$800.00
4x90W RMS
1998-20132014-20232024+
Fairing
Hertz HMP1D — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (300W RMS @ 2Ω)

Hertz HMP1D — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (300W RMS @ 2Ω)

Hertz HMP1D — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (300W RMS @ 2Ω)

$595.00
300W RMS
1998-20132014-20232024+
Saddlebags
Hertz HMP4D — Compact 4-Channel Class-D Motorcycle Amplifier (260W RMS / 65W x4 @ 2Ω)

Hertz HMP4D — Compact 4-Channel Class-D Motorcycle Amplifier (260W RMS / 65W x4 @ 2Ω)

Hertz HMP4D — Compact 4-Channel Class-D Motorcycle Amplifier (260W RMS / 65W x4 @ 2Ω)

$595.00
4x50W RMS
1998-20132014-20232024+
Fairing
Hertz SP4.900 — Advanced 4-Channel Class-D Motorcycle Amplifier (920W RMS / 230W x4 @ 2Ω)

Hertz SP4.900 — Advanced 4-Channel Class-D Motorcycle Amplifier (920W RMS / 230W x4 @ 2Ω)

Hertz SP4.900 — Advanced 4-Channel Class-D Motorcycle Amplifier (920W RMS / 230W x4 @ 2Ω)

$1,310.00
4x150W RMS
1998-20132014-20232024+
Fairing
Hertz SP1.900 — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (1,000W RMS @ 1Ω)

Hertz SP1.900 — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (1,000W RMS @ 1Ω)

Hertz SP1.900 — Compact 1-Channel Class-D Motorcycle Subwoofer Amplifier (1,000W RMS @ 1Ω)

$799.00
1000W RMS
1998-20132014-20232024+

Subwoofers

Hertz CS 250 S4 – 10" Subwoofer (4-Ohm)

Hertz CS 250 S4 – 10" Subwoofer (4-Ohm)

Hertz CS 250 S4 – 10" Subwoofer (4-Ohm)

$315.00
10 · 4 Ohm
300W RMS / 600W MAX
1998-20132014-20232024+
Saddlebags
Hertz MPS 250 S4 – 10" Shallow Subwoofer (4-Ohm)

Hertz MPS 250 S4 – 10" Shallow Subwoofer (4-Ohm)

Hertz MPS 250 S4 – 10" Shallow Subwoofer (4-Ohm)

$629.00
10 · 4 Ohm
500W RMS / 1000W MAX
1998-20132014-20232024+
Saddlebags
Hertz MPS 250 S2 – 10" Shallow Subwoofer (2-Ohm)

Hertz MPS 250 S2 – 10" Shallow Subwoofer (2-Ohm)

Hertz MPS 250 S2 – 10" Shallow Subwoofer (2-Ohm)

$629.00
10 · 2 Ohm
500W RMS / 1000W MAX
1998-20132014-20232024+
Saddlebags

DSP

Hertz S8 DSP Ultra-Compact 8-Channel Motorcycle Digital Signal Processor

Hertz S8 DSP Ultra-Compact 8-Channel Motorcycle Digital Signal Processor

Hertz S8 DSP Ultra-Compact 8-Channel Motorcycle Digital Signal Processor

$1,310.00
8 in / 8 out
1998-20132014-20232024+

Grilles & Accessories

Hertz 1998–2013 Street Glide Fairing Speaker Grilles — Direct OEM Fit

Hertz 1998–2013 Street Glide Fairing Speaker Grilles — Direct OEM Fit

Hertz 1998–2013 Street Glide Fairing Speaker Grilles — Direct OEM Fit

$110.00
1998-2013
Fairing
Hertz HD24H – 6×9" Saddlebag Speaker Cut-In Kit for 2023.5+ Harley Touring

Hertz HD24H – 6×9" Saddlebag Speaker Cut-In Kit for 2023.5+ Harley Touring

Hertz HD24H – 6×9" Saddlebag Speaker Cut-In Kit for 2023.5+ Harley Touring

$950.00
6x9 · Coaxial
100W RMS
2024+
Saddlebags
Hertz HD14H – 6×9" Saddlebag Speaker Cut-In Kit – Harley-Davidson 2014–2023

Hertz HD14H – 6×9" Saddlebag Speaker Cut-In Kit – Harley-Davidson 2014–2023

Hertz HD14H – 6×9" Saddlebag Speaker Cut-In Kit – Harley-Davidson 2014–2023

$850.00
6x9
2014-2023
Saddlebags
Hertz 2014–2023 Street Glide Fairing Speaker Grilles

Hertz 2014–2023 Street Glide Fairing Speaker Grilles

Hertz 2014–2023 Street Glide Fairing Speaker Grilles

$110.00
2014-2023
Fairing
Hertz 2015–2023 Road Glide Fairing Speaker Grilles

Hertz 2015–2023 Road Glide Fairing Speaker Grilles

Hertz 2015–2023 Road Glide Fairing Speaker Grilles

$110.00
2014-2023
Fairing
Hertz 1998-2013 Road Glide Fairing Speaker Grilles

Hertz 1998-2013 Road Glide Fairing Speaker Grilles

Hertz 1998-2013 Road Glide Fairing Speaker Grilles

$110.00
1998-2013
Fairing

Choosing between Hertz coaxial and midrange speakers comes down to your install goals. Coaxials are a clean drop-in where space is tight; midrange drivers paired with a dedicated tweeter give you better imaging and higher output when you have room to work with.

Hertz amplifiers are a natural pairing — the power ratings align with the speaker specs, and the compact form factors suit underseat and saddlebag installs. If you're running a Hertz mid-bass driver, size the amp channel accordingly rather than relying on head unit power.

For builds that need low-end support, a subwoofer cut-in kit rounds out the system without major fabrication. Not sure which Hertz components suit your bike and budget? Contact MAA and we'll put together a matched system.