Welcome to your Full Hertz/ Audison Audio System Upgrade for your Bronco!

The following guide will walk you through the entire installation which includes a step by step catalog. Our installation video is in the works but this guide will get you over the finish line in the meantime.

If you have any questions, or need anything during the installation, we're only a phone call away. We're available Monday-Friday, 9am-5pm est. for any support needed, or you can shoot us an email at support@trailseven.com.

These installation notes are intended to be used in conjunction with the installation videos based on the your bundle.

Tech Tips

Tools You Will Need:

• Panel Removal Tool

• 7mm Socket

• 10mm Socket (w/ extension for Driver's side)

• T-30 Torx (Driver's Side)

• Zip Ties l

• 3/8" Drill Bit

• Rivet Tool

• Marker

• 7/16 Socket

• Phillips Head Drill Bit

• SoundSkinz Tailgate Enclosure Install Instructions

Pre-Install Read

The Bronco's audio system has evolved over time. Initially, non-B&O models lacked a subwoofer, using the space for a small shelf. Ford later added a subwoofer in the trunk area, eliminating the shelf. If you have an early model Bronco, please reach out to us as we offer a mesh grill that requires DIY modifications to the trunk trim to make room for the amp.

Front Speaker Upgrade

Trail Seven Hertz-Audison Speaker Installation Video:

Amp Adjustments:

Please Note: Your non-B&O Bronco uses the LC5iPro line output converter to send the factory radio signal to your Audison amplifiers. Check its settings below before playing any music.

LC5iPro Setting Requirements:

(The LC5iPRO will be preset to the needed dials and switches needed, however it's important to double check the system before playing any music through to prevent issues.)

• Channel 1 Load Select:
  • switch all the way up, or to 20 ohms
• Channel 1 Signal Bus:
  • Switch up, or to Sum/Bus
• Channel 2 Load Select:
  • Switch all the way up, or to 20 ohms
• Channel 2 Signal Bus:
  • Switch up, or to Sum/ Bus
• Trigger Mode:
  • Switch to the middle, or to GTO
• Ground Isolation:
  • Switch all the way up, or to GND
• Channel 1 Level:
  • To the 10 O'clock position
• Channel 2 level:
  • To the 10 O'clock position
• AccuBASS:
  • Both to the 2 O'clock position
• Channel 3 Level:
  • To the 2 O'clock position

Amplifier Setting Suggestions

Amp Settings Instructions & Diagram (PDF): LINK

Amp Wiring Schematic: LINK

Your amps arrive pre-set from our shop to the settings below and in the PDF. Use them to check the amps or to get back to a known starting point. If you reset LEVELS, use the 5-step method in the PDF: channel A (dash), B (kick), C (rear), then the sub.

Dual Audison Amplifier Settings:

• Gain Levels:
  Set gain to 0 and radio levels to 0. Gradually increase volume to 75% max. For Channel 1, increase gain slowly until slight distortion is noticed, then lower gain slightly. Follow the same method for the remaining channels. Use radio settings for “salt and pepper” adjustments.
• Preset switches:
  • ART - OFF
  • INPUT B - OFF
  • INPUT C- ON
• A CHANNEL / A CH:
  • MODE - HI ( PRESSED IN)
  • LEVELS - 12 O'CLOCK
  • RANGE - X1 ( PRESSED OUT)
  • FREQUENCY (BAND: LO PASS) - MAX ( 500 HZ)
  • MONO L: OFF
• B CHANNEL / B CH:
  • MODE - BAND ( IN A)
  • LEVELS - 12 O'CLOCK
  • FREQUENCY (BAND: HI PASS) - MIN ( 50 HZ)
  • MONO L: OFF
• C CHANNEL / C CH:
  • MODE - HI
  • LEVELS - 12 O'CLOCK
  • FREQUENCY - 8 O'CLOCL
  • MONO L: OFF
• MONO AMPLIFIER:
  • PRE OUT HI PASS - MIN (50HZ)
  • LEVELS - 12 O'clock
  • PHASE - MIN (0 DEGREES)
  • 50HZ BASS BOOST - 12 O'CLOCK
    
  • LO PASS - 1 O'CLOCK
  • FILTER - ON
  • SUBSONIC - ON

Here are pictures of the amp settings we set our systems

to give a good foundation to work from.

Audison 6 Channel Amplifier

Audison Mono Amplifier

Trail Seven Hertz-Audison Amplifier Installation Video: