Helix-Velocity DSP Amp + Speakers Full System SKU: C-HV-DSP6569



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Introducing the Velocity/Helix Difference. A powerhouse combo sure to make you the loudest, best-sounding bike on your ride. This complete combo comes with a Helix M Four DSP, a set of 6.5" coax speakers, and a pair of 6x9 pro audio speakers for your bags. What more could you want?

We Tune Your Bike for You

All Live-Tune enabled systems can be remotely tuned via the internet by one of our professionals. We can tune your bike from anywhere in the world. Why settle for anything less than the best? Our techs set these systems up every day and have tuned thousands of bike audio systems over the years.

Read More About The Live Tune Option Here


  • Compatible Year - 2014+
  • Compatible Model - Street Glide, Road Glide
  • Location - Fairing
  • Additional Adapter Required - Street Glide needs grills
  • Modification Required - Street Glide No, Road Glide Yes - Healight modification - grinf headlight mounting tabs back to mounting to allow clearance for amplifier
  • Plug & Play - Yes
  • Works with Electric Lid Locks - N/A



  • Helix 2 years
  • Velocity 2 years/3 years if installed by authorized dealer
  • American Hard Bag 5 years


Very High Level Performance

Road Glide

Street Glide

What's Included

  • (1) Helix DSP Amplifier
  • (1) Pair of Velocity RZ65h coax speakers
  • (1) Pair of Velocity RZ69h 6x9 speakers
  • All hardware, crossovers, and manuals


Product Overview

The Brand New Helix M FOUR DSP is a powerful 4-channel amplifier with a fully-integrated digital sound processor manufactured in Germany that brings a continuous output of 135 Watts per channel, both at 4 Ohms and 2 Ohms. This game-changing control center is cool, compact, extremely practical, and up for any challenge in your Harley system.

Perfect for integration with factory Harley radios, the M Four amplifier/DSP has a number of features that make it totally different than anything else ever made.

Technical Specifications

  • Model: M FOUR DSP
  • Power RMS: @ 4 Ohms: 4 x 135 W; @ 2 Ohms: 4 x 135 W; Bridged @ 4 Ohms: 2 x 270 W
  • Amplifier Technology: Class D
  • Inputs: 6x RCA, 6x High-level speaker, 1x Optical SPDIF, 1x Remote In
  • Input sensitivity: RCA 1-4 V, Highlevel 5-20 V
  • Input impedance RCA: 22 kOhms
  • Input impedance high-level: 9-33 Ohms
  • Outputs: 4x Speaker, 6x RCA, 2x Remote Out
  • Output voltage RCA: 6 Volts RMS
  • Frequency response: 20 Hz-22,000 Hz
  • DSP resolution: 64 Bit
  • DSP power: 295 MHz
  • Sampling rate: 48 kHz
  • DSP Type: Audio signal processor
  • Signal converters: A/D: AKM 32 Bit, D/A: AKM 32 Bit
  • Signal-to-noise ratio digital input: 105/108 dB Speaker / Line Output
  • Signal-to-noise ratio analog input: 102/105 dB Speaker / Line Output
  • Distortion: < 0.03/0.005 % Speaker / Line Output
  • Damping factor: 100
  • Operating voltage: 10.5-16 Volt (max. 5 sec. down to 6 Volts)
  • Idle current: 1500 mA
  • Max. remote output voltage: 500 mA
  • Fuse: 2x 30A LP-Mini-Fuse
  • Additional features: ADEP.3 circuit, Auto Remote switch, 32 Bit CoProcessor, Control Input
  • Dimensions (H x W x D): 2.0” x 9.06” x 6.06”


  • StageXpander makes the entire system sound bigger and bolder
  • Dynamic Bass Enhancement maximizes deep bass
  • ClarityXpander feature adds additional harmonics in the upper-frequency range
  • Built-in input RTA and input EQ that can compensate for any radio flash. No need to flash your bike for a perfect signal.
  • Built-in 10 channel EQ, crossover, phase control
  • Built-in signal meter and anti clipping feature saves speakers at insane volume levels 
  • 135 Watts RMS output power per channel
  • Extremely efficient low-heat dissipation
  • Bridgeable amplifier channels for driving powerful speakers
  • DSP-board manufactured in Germany

Velocity RZ65h

Product Overview

The Velocity RZ65H speakers are a huge jump forward in tunability for pro-audio-type speakers on Harley baggers. We built the RZ65H speakers to sound better out of the box without the typical response issues of horn-loaded pro-audio-type speakers. 

Technical Specifications

  • Sensitivity: 101db 1W/1M
  • Frequency Response: 100hz - 20khz
  • Nominal Impedance: 4 Ohms
  • RMS/Max: 300W/600W (pair)
  • Outside diameter: 6.625" 
  • Mounting Hole: 5.73"
  • Mounting Depth: 3.125"
  • Total Depth: 3.375
  • Bolt Circle: 6.22"


  • Much better sounding high frequency than other horns 
  • Better low-end punch
  • Great sounding out of the box
  • Water-resistant
  • 2 Year Warranty

Velocity RX69h

Product Overview

Purpose-built speakers for Harley applications, The Velocity RZ69H is the best sounding pro audio 6x9 speaker right out of the box. We designed the RZ69H in such a way that there is much less tuning required. These speakers are made to perform at their peak when mounted in a saddlebag lid. 

Technical Specifications

  • Sensitivity: 101db 1W/1M
  • Frequency Response: 80hz - 20khz
  • Nominal Impedance: 4 Ohms
  • RMS/Max: 300W/600W (pair)
  • Mounting Depth: 3.75"
  • Total Depth: 4"


  • Extreme Hard-Hitting Mid-Bass
  • Smooth Extended High-Frequency Range
  • Ultra Loud and Very Efficient
  • Light Weight, and Doesn't Hog Up Your Bag Space
  • 2 Year Warranty - 3 Year if Installed by an Authorized Velocity Dealer