Jarrett Willis started car audio at the age of 15, installing radios and door speakers at his parent’s car lot. He doesn’t currently compete with his build, though it does meter a 159.6. He does enjoy demoing but doesn’t carry a preference for demoing over competing. He believes both styles have their place in the car audio scene. Jarrett’s main goal in car audio is to help spread useful, correct information. As well as to prevent bullying and bashing of each other’s builds and continue the regrowth of the car audio scene. To take a look at all Crossfire equipment, click here.

03 Mitsubishi Montero Sport

Jarret’s current build is in a 2003 Mitsubishi Montero Sport, with a completely stock cabin from the B pillar forward.


The Montero has 210ah of Yinlong lithium cells paired with a 270a Brand X alternator. A single pack of six Yinlong lithium cells offers 4,000w when paired with a 100a alternator, 5,000w when paired with a 200a alternator, and 6,000w when paired with a 300a alternator. The state of charge, based on voltage is outlined in the table below. The wiring throughout the Montero is 1/0 welding cable.

Link to Yinlong Lithium Cells

Link to Brand X Alternators

Mids and Highs

In each door of the Montero, you will find two Crossfire XT-Pro 8’s, one Crossfire XT-Pro 10, and two XS-ST1 Tweeters. These are powered by two Crossfire C5-800.4 amplifiers. The Montero’s doors were built in Russia by Djon Chubar.

The Crossfire XT-Pros Feature:

  • Cast Aluminum Basket
  • Oversized CCAW High Temperature Voice Coil
  • Carbon Fiber Cone
  • Treated Cloth Accordion Surround
  • Push Terminals

The XT Pro 8’s Feature:

The XT Pro 10’s Feature:

Link to Crossfire XT-Pros

The Crossfire XS-ST1s Feature:

  • Precision CNC Aluminum Horn Tweeter
  • Chambered Neodymium Motor
  • Aluminum Diaphragm W/ 1” CCA Voice Coil
  • Capacitor Included With Tweeter For Proper Frequency Cutoff
  • Frequency Response: 2800Hz – 28kHz
  • Sensitivity: 106dB
  • Power Handling: 50W RMS
  • Impedance: 4 Ohm / 8 Ohm
Speaker Size Voice Coil Frequency Response RMS Power Max Power Mounting Depth
XS-ST1 3″ 4/8 Ohm 2800 Hz-28 kHz 80w 160w 1.9″/48 mm

Link to Crossfire XS-ST1s

The Crossfire C5-800.4 Feature:

  • Bridgeable
  • 5 Way Protection Circuit
  • Mosfet PWM Power Supply
  • Power / Protection Indicator
  • Variable High-Pass / Low-Pass Crossover
  • 2 Ohms Stable Stereo
  • Variable 45 Hz Bass Boost (2 Ch. & Mono Block)
  • 4 Ohms Stable Bridged
C5-800.4 100w x 4 Channels @ 4 Ohms Stereo 400w x 2 Channels @ 4 Ohms Bridged 16.4″ x 8.7″ x 2.4″ H

Link to Crossfire C5-800.4

Subs and Sub Amps

In the Montero, there is a 6th order enclosure, designed by Artisan Enclosures (Jess Berry). Within the 6th order, there are four Crossfire XT3 12’s powered by two Crossfire XT-6k’s which are wired at 0.5 ohms each.

The Crossfire XT3-12’s Feature:

  • Triple Stack 925 oz. Motor Structure Assembly
  • FEA Optimized Motor
  • Massive 3” 8 Layer Aluminum Voice Coil
  • Chrome Plated 25mm Top & Back Plate
  • Solid Hybrid Tapered Extended Pole Piece
  • Precise Circular Velosity Controlled Rear Perimeter Venting
  • Pressed Kraft Fiber Reinforced Cone
  • Multi-Layer Wide Roll Foam Surround
  • Advanced 10″ Quad Layer Progressive Roll Spaced Spider Suspension
  • Dual Round XL Woven & Stitched Tinsel Leads
  • True Carbon Fiber Dustcap (Multiple Logo Color Options Available
  • Oversized 4 AWG Nickel Plated Push Terminals (Custom Order Direct Leads Available)
  • Custom Tooled Embossed Motor Boot
  • Dual .5 And Dual 1 Ohm Voice Coil Options (Custom Order Dual .35, .7, And 1.4 Available)
  • 3000 Watts RMS Power Handling
    Driver Description 12″ 15″ 18″
    Fs 35 Hz 32 Hz 30 Hz
    Re 2.8 Ohm 2.8 Ohm 2.8 Ohm
    Qms 8.19 8.39 8.55
    Qes 0.42 0.46 0.51
    Qts 0.4 0.43 0.48
    Mms 365 g 436 g 485 g
    Cms 0.06 mm/N 0.06 mm/N 0.06 mm/N
    Sd 480 cm^2 810 cm^2 1210 cm^2
    Vas 18 L 51 L 118 L
    Spl 88.2 dB 91.3 dB 93.1 dB
    BL 24.53 24.53 24.53
    X-Maz 34mm 34mm 34mm
    Outer Diameter 12.50″ 15.625″ 18.50″
    Inner Diameter 11.125″ 14.125″ 16.75″
    Mounting Depth 9.625″ 10.75″ 11.875″
    Driver Displacement 0.20 ft³ 0.22 ft³ 0.25 ft³
    Power Handling (RMS) 3,000w 3,000w 3,000w

Link to Crossfire XT3-12’s

The Crossfire XT-6k’s Feature:

  • XT-6K, 8K, Strapable Mono Block Amplifiers
  • Dual MOSFET PWM Power Supply
  • Stable Into 1 Ohm Mono Load
  • 24 dB / Octave, Variable Low-Pass Crossover
  • 24 dB / Octave, Variable Subsonic Filter
  • 9 dB / Octave, Variable Bass Boost (N/A on XS-16K)
  • 180 Variable Phase Shift
  • 4 Way Protection Circuit
  • Subwoofer Level Controller w/ Clipping Indicator Included
  • Working Voltage From 8.5V ~16V
Amplifier Rated RMS Power @ 12.5v Rated RMS Power @ 12.5v Rated RMS Power @ 12.5v Dimensions
XT-6k 6,000w @ 1 Ohm Mono 3,500w @ 2 Ohm Mono 1,800w @ 4 Ohm Mono 28.35″ L x 11.35″ W x 2.6″ H

Link to Crossfire XT-6k’s

Crossfire Car Audio Booth @ Ruckus and Chill 2021


Also in the Montero is a Dayton Audio 408 Digital Sound Processor.

The Dayton Audio 408 Digital Sound Processor Features:

  • Real-time signal processing for ultimate control
  • Complete audio customization for application-specific installations
  • Easy-to-use Graphical User Interface (GUI)
  • All eight output channels have a fully adjustable 10-band parametric EQ
  • Optional Bluetooth dongle (for streaming and app control) and wired remote available.

Link to Dayton Audio 408 Digital Sound Processor

All acrylic pieces including the battery delete, hood prop, backplate, fuse block, and LEDs were crafted by LoudAF. The relay box, switch panel, and amp fans are from Sparked Innovations.


About The Author euro_bass

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