LOC90 - Audio/video converter Scosche - Free user manual and instructions
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| Product Type | Line Output Converter (LOC) |
| Model | LOC90 |
| Brand | Scosche |
| Category | Audio/Video Converter |
| Input Channels | 2 (Left/Right) speaker-level input |
| Output Channels | 2 (Left/Right) RCA output |
| Input Impedance | 12 ohms |
| Output Impedance | 100 ohms |
| Gain Adjustment | Variable 0.5V to 8V |
| Frequency Response | 20 Hz - 20 kHz |
| Signal-to-Noise Ratio | > 90 dB |
| Total Harmonic Distortion | < 0.05% |
| Power Supply | 12V DC, 500mA |
| Dimensions (W x H x D) | 3.5 x 1.2 x 2.8 inches |
| Weight | 0.25 lbs |
| Remote Turn-On | Yes (12V trigger) |
| Ground Isolation | Yes (eliminates ground loops) |
| Noise Filter | Low-pass filter (variable cutoff) |
| LED Indicator | Power on/off |
| Mounting | Bracket or double-sided tape |
| Compatibility | Factory stereo systems with speaker outputs |
| Installation | Single screw connectors for input/output |
Frequently Asked Questions - LOC90 Scosche
What is a line output converter (LOC) and what does the Scosche LOC90 do?
A line output converter converts high-level speaker outputs from a factory stereo into low-level RCA outputs for aftermarket amplifiers. The LOC90 specifically provides adjustable gain and ground isolation to prevent alternator whine.
How do I install the Scosche LOC90?
Connect the speaker-level inputs from your factory stereo to the LOC90 using the included harness. Then connect the RCA outputs to your amplifier. Power the LOC90 with 12V DC (e.g., from the amplifier remote turn-on) and ground the black wire. Adjust the gain using the small screwdriver.
Can the LOC90 be used with any factory radio?
Yes, it works with most factory stereos that have speaker output wires. However, ensure your radio outputs are not bridged or distorted. The LOC90 can handle up to 50 watts per channel input.
Does the LOC90 require a separate power supply?
It needs a 12V DC power source, typically from the remote turn-on wire of your amplifier or an accessory wire. The current draw is low (500mA), so a standard remote wire works fine.
How do I adjust the gain on the LOC90?
Use a small flathead screwdriver to turn the gain pot. Start with the gain fully counterclockwise (minimum), then play a moderately loud track on your stereo and slowly turn clockwise until you hear distortion, then back off slightly. This matches the output level to your amplifier's input sensitivity.
What is the purpose of the ground isolation feature?
Ground isolation eliminates alternator whine and other ground loop noise by electrically isolating the input from the output grounds. This is common when connecting aftermarket equipment to factory wiring.
How do I troubleshoot no sound from the LOC90?
Check all connections: speaker inputs, RCA outputs, power (12V), and ground. Ensure the gain is not turned completely down. Test with a known working amplifier. The LED indicator should be lit; if not, verify power.
Is the Scosche LOC90 compatible with high-powered factory systems?
It can handle up to 50 watts RMS per channel. If your factory system outputs more than that, consider using a step-down resistor or a different LOC designed for higher power.
Can I use the LOC90 with a 4-channel amplifier?
Yes, you can daisy-chain two LOC90 units (one for front channels, one for rear) or use the summed outputs if your amplifier accepts 2-channel input. The LOC90 outputs two channels (left/right).
How do I clean and maintain the LOC90?
Disconnect power before cleaning. Wipe with a dry cloth to remove dust. Avoid moisture and solvents. Periodically check connections for corrosion. The LOC90 is solid-state and requires no internal maintenance.
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