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Product Info
The Aerpro Hi-Low Level Signal Summing Interface Wiring Kit APU8SUM is designed to integrate aftermarket audio components into a vehicle's factory stereo system. It sums and balances up to four speaker-level stereo pairs down to a single low-level RCA output, and includes a built-in AUX input alongside four line-level stereo RCA outputs for connecting an amplifier.
The interface accepts speaker-level and auxiliary signals up to 40V RMS, with a signal to noise ratio of 90dB across channels 1-4 and a frequency response of 20–22,000 Hz for accurate audio reproduction. A gain range of -30dB to +4dB allows level adjustment across channels 1-4, while a built-in 2A fuse protects the circuit.
Features
- Built in AUX input plus four line-level stereo RCA outputs for amplifier connection
- Balance levels from multiple speaker-level sources
- Sums up to four speaker-level stereo pairs into a single RCA low-level output
- Handles speaker-level and auxiliary inputs up to 40V RMS
- Built-in 2A fuse protects the circuit from overload
- Frequency response of 20–22,000 Hz suits full range audio signals
- Signal to noise ratio of 90 dB across channels 1-4 for clean audio reproduction
- Gain range of -30 dB to +4 dB allows fine level adjustment across channels 1-4
Tech Spec
| Kit Type | Hi-Lo Level Signal Summing Interface |
|---|---|
| Fuse Rating (A) | 2A |
| Dimensions | 140mm D x 268mm W x 36mm H |
| Weight | 1.40kg |
| Frequency Response | 20–22,000 Hz |
| Gain Range (Channels 1-4) | -30dB to +4dB |
| Signal to Noise Ratio (Channels 1-4) | 90dB |
| Max Aux-In Voltage | 40V RMS |
| Max Speaker-Level Input Voltage | 40V RMS |