SPK100 and SPK200 Installation Instructions and Tips

Before You Start

• Tools you may need: Phillips screwdriver, drill (optional), wire stripper, and a clean mounting surface.
• The included cable length is 6.5 ft, so pick a location that allows it to comfortably reach your radio.

1. Choose a Mounting Location

Pick a spot in your vehicle where the speaker will be easy to hear and won’t interfere with electronics or safety systems.

Good Places

• Near the passenger-side footwell
• Under the dash
• On a sturdy console panel

Avoid These Areas

• Direct sunlight or very hot surfaces
• Air vents (heating or A/C)
• Any airbag deployment zone
• Thin or weak surfaces that won’t support the 2.3 lb speaker

2. Mount the Speaker Bracket

1. Hold the bracket against your chosen surface.
2. Use 2–4 supplied tapping screws to secure it.
3. If installing on a thin panel, use the included flat speed nuts behind the panel for extra strength.

3. Attach the Speaker

1. Place the speaker onto the bracket.
2. Use the two mounting knobs to secure it.
3. Pivot/tilt the speaker to your preferred angle.
4. Tighten the knobs.

4. Route the Audio Cable

1. Take the cable coming from the speaker.
2. Route it cleanly to the rear of your radio (avoid sharp edges and moving pedals).
3. Plug the 3.5mm mono connector into your radio’s external speaker jack.

Note for MXT275 or MXT575

Make sure the base speaker is enabled in the radio menu; otherwise the external speaker may not work.

5. Choose Your Power Method

Option A — Plug Into a 12V DC Port (Simplest)

1. Plug the supplied SPK200 power cable into a 12V accessory/cigarette port.
2. Done! This is the quickest way to power the speaker.

Option B — Hardwire Using the Included Splice Block

This powers the speaker directly from your radio’s power cord.

Note: Disconnect your vehicle battery before wiring.

Step-by-Step:

1. Disconnect vehicle battery.
2. Locate the positive and negative wires on your radio’s power cord.
3. Strip 0.4 inches off the ends of each wire you plan to connect.
4. Open the splice block levers to the upright position.
5. Insert wires:
   1. The power coming from the vehicle goes into the 2-IN side.
   2. The radio’s power wires and the SPK200 power wires go to the 4-OUT side.
   3. Match positive to positive, negative to negative.
6. Close the levers to secure the wires.
7. Reconnect battery.

Fuse Requirements

• SPK200 requires 2A – 5A fuse protection.
• If your radio’s existing fuse is 5A, you do NOT need the extra inline fuse.
• If your radio uses a fuse larger than 5A (40W–50W radios), you must use the SPK200’s included 5A inline fuse.

6. Power Management Notes

• You can connect to a switched circuit if you want the speaker to turn off with the ignition.
• If no audio is detected for 30 minutes, the SPK200 automatically enters low-power mode to protect your battery.

7. Test Your Installation

1. Turn on your radio.
2. Use the monitor function on the radio to generate noise for testing.
3. Listen for clear, amplified audio through the SPK200.