Sound Magus SE90.4 - User Manual

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SE90.2 / SE150.2/SE90.4 / SE150.4

SE800.1 / SE1500.1/SE2000.1 / SE3500.1

DSP DIGITAL POWER AMPLIFIERS

OWNER'S MANUAL

Table of Contents

Questions and Answers

D
Deanna JohnsonAug 4, 2025
What to do if the Protection LED comes on in my Sound Magus Amplifier?
- N
  nlambertAug 4, 2025
  If the Protection LED on your Sound Magus Amplifier is illuminated, it indicates a potential issue. First, check for short circuits on the speaker leads, as this is a common cause. Also, ensure the speaker load is not beyond the minimum specified. Try removing the speaker lead and resetting the amplifier. If the LED remains on after these steps, the amplifier may be faulty and require servicing.
I
icarrAug 8, 2025
How to troubleshoot a Sound Magus Amplifier that will not power up?
- A
  Ashley ClarkAug 8, 2025
  If your Sound Magus Amplifier is not powering up, there are several things to check. First, ensure you have a solid ground connection. Next, verify that there is battery power at the (+) terminal. After that, inspect all fuses and replace them if necessary. Finally, confirm that the Protection LED is not illuminated, as this can prevent the amplifier from powering on.
J
Joshua DavisAug 12, 2025
Why is my Sound Magus Amplifier producing distorted sound?
- S
  Steven JohnstonAug 12, 2025
  If you are getting distorted sound from your Sound Magus Amplifier, there are a few things you should check. Make sure the input level control is set appropriately to match the signal level of your head unit, and always try to keep this level as low as possible. Verify that all crossover frequencies are correctly set. Also, check the speaker leads for any short circuits.
F
Frederick HughesAug 17, 2025
What to do if my Sound Magus Amplifier gets very hot?
- J
  Jerry CarrAug 17, 2025
  If your Sound Magus Amplifier is getting very hot, ensure that the load impedance is correct for your amplifier model. Also, make sure there is adequate air circulation around the amplifier. In some cases, adding an external cooling fan may be necessary.
J
Jason WongAug 21, 2025
What to check if my Sound Magus Amplifier has no output?
- M
  Michele PeckAug 22, 2025
  If you are experiencing no output from your Sound Magus Amplifier, there are several things to check. First, ensure that the RCA audio cables are correctly plugged into the appropriate inputs. Next, inspect all speaker wiring. Finally, check both the head unit output and the amplifier level settings.
J
johndrakeAug 26, 2025
How to fix high hiss in speakers with a Sound Magus Amplifier?
- B
  Brianna ThomasAug 26, 2025
  To address high hiss in the speakers connected to your Sound Magus Amplifier, verify that the RCA cable is not shorted to the power ground on the amplifier side. Also, check the amplifier grounding.
R
Robert IrwinAug 30, 2025
Why is the output low on my Sound Magus Amplifier?
- S
  Sarah DaltonAug 30, 2025
  If you're experiencing low output from your Sound Magus Amplifier, try resetting the level control. Also, check the crossover control settings.

Summary

Owners Manual

Features Overview

Amplifier Features List

Lists key features like DSP circuit, memory functions, wireless adapter, and adjustable settings.

Controls and Functions

+12 Volt Power Connection

Connect to positive terminal via fuse/breaker for vehicle or isolated battery.

Remote Turn On Terminal

Connect to head unit remote lead to turn amplifier on with 12V signal.

Ground (GND) Connection

Connect directly to stripped metal chassis ground; use shortest, thickest cable.

Amplifier Installation Steps

General Installation Steps

Covers choosing a location, using screws, and attaching/removing plastic end caps.

Wiring Diagrams

Single Channel Input Mode Wiring

Shows wiring for SE800.1/1500.1/2000.1/3500.1 in single channel input mode.

One Woofer Load Mode Wiring

Two Woofer Load Mode Wiring

Stereo Mode Wiring

Bridged Mode Wiring

4-Channel Mode Wiring

3-Channel Mode Wiring

Troubleshooting and Specifications

Troubleshooting Common Symptoms

Provides remedies for issues like no power, protection LED, no output, hiss, and overheating.

Amplifier Specifications (Table 1)

Amplifier Specifications (Table 2)

Sound Magus SE90.4 Specifications

General

Channels	4
RMS Power @ 4 Ohms	90W x 4
Signal to Noise Ratio	>90dB
Bass Boost	0 - 12dB
Minimum Impedance	2 Ohms
Crossover	LP/HP/Full

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