RS5.4500D - Hi-Fi System Soundstream - Free user manual and instructions

Product Type	Car Audio Mono Amplifier
Amplifier Class	Class D
Peak Power Output	4500W
RMS Power Output @ 1 Ohm	2250W x 1
RMS Power Output @ 2 Ohm	1250W x 1
RMS Power Output @ 4 Ohm	750W x 1
Frequency Response	10Hz - 250Hz
Input Sensitivity	0.2V - 6V
Low Pass Filter	Variable 50Hz - 250Hz
Subsonic Filter	Fixed 24dB/octave at 30Hz
Bass Boost	0-12dB at 45Hz
Input Type	RCA (Gold Plated)
Speaker Outputs	Screw terminals (0-8 AWG)
Power Supply Voltage	12V DC (10V-16V)
Fuse Rating	300A (external)
Dimensions (W x L x H)	12.6 x 8.3 x 2.2 inches
Weight	5.5 lbs
Remote Level Control	Included (wired)
Cooling	Heatsink with thermal protection
Protection Circuitry	Short circuit, thermal, overvoltage, undervoltage
Recommended Subwoofer Impedance	1 - 4 Ohm (single or dual voice coil)
Certifications	CE, RoHS
Warranty	1 year limited
Brand Origin	USA (Soundstream)

Frequently Asked Questions - RS5.4500D Soundstream

What is the recommended power wire gauge for the RS5.4500D?

For the RS5.4500D, use a minimum 2 AWG power and ground wire due to its high current draw (up to 300A). Ensure a clean, tight connection.

Can I use this amplifier with a 4 Ohm subwoofer?

Yes, the RS5.4500D delivers 750W RMS x 1 at 4 Ohm. It is stable down to 1 Ohm for maximum power output.

Is the amplifier bridgeable?

The RS5.4500D is a monoblock amplifier, designed for single subwoofer operation. It is not bridgeable but can run multiple subwoofers if wired correctly.

What is the difference between peak and RMS power?

Peak power (4500W) is the maximum burst power, while RMS power (e.g., 2250W at 1 Ohm) is continuous power handling. Always match RMS ratings for reliable performance.

How do I set the input sensitivity (gain)?

Turn the gain to minimum, play a clean test tone at your head unit's max volume, then gradually increase gain until you hear distortion, then back off slightly. Use an oscilloscope or DMM for precision.

Does this amplifier include a remote bass boost knob?

Yes, the RS5.4500D comes with a wired remote level control for adjusting subwoofer volume from the driver's seat.

What type of fuse is required?

Use an external 300A ANL fuse (or similar) within 18 inches of the battery. Never replace with a higher rating.

Can I use this in a home audio system?

While designed for 12V car audio, you can power it with a 12V DC power supply. However, it lacks home audio input types (e.g., balanced inputs) and may require adapters.

How do I connect multiple subwoofers to this amplifier?

Wire subwoofers in parallel or series to achieve a final impedance of 1 Ohm to 4 Ohm. For example, two 4 Ohm DVC subs can be wired to 1 Ohm total.

What is the recommended enclosure size?

Enclosure size depends on your specific subwoofer. Generally, for ported boxes aim for 2-3 cubic feet, and sealed boxes 1-1.5 cubic feet per sub. Consult your subwoofer manual.

USER MANUAL RS5.4500D Soundstream

All specifications are subject to change

OWNER'S MANUAL

RESERVE AMPLIFIER

Exterior view of a white electronic device labeled 'UNITED PET-68' with no visible text or symbols on its body.

RS2.1200 RS4.1200 RS4.2000 RS1.5000D RS1.8000D RS5.4500D

Table of Contents

Installation

Installation Notes, Installation of Amplifier, Electrical Connections 2

2-Channel Amplifiers RS2.1200

Functions & Controls 3 Speaker- & RCA Connections 4-5

4-Channel Amplifiers RS4.1200/RS4.2000

Functions & Controls 6 Speaker- & RCA Connections 7-8

1-Channel Mono Bass Amplifier RS1.5000D

Functions & Controls 9 Speaker- & RCA Connections 10-11

1-Channel Mono Bass Amplifier RS1.8000D

Functions & Controls Speaker- & RCA Connections 12 13-14

5-Channel Mono Bass Amplifier RS5.4500D

Functions & Controls 15 Speaker- & RCA Connections 16-17

Trouble Shooting 18

Specifications 19

Installation

Installation Notes

The amplifier is generally mounted in the rear trunk area but can be mounted in any convenient area such as beneath a seal. Please be sure to locate this unit where you have reasonable air circulation and protection from moisture. When considering the mounting location you should minimize the length of the power and speaker leads. Minimizing both leads will yield a more reliable installation. It is also important to ensure that the heat sink fins are not against a panel or a surface, preventing air circulation. Do not install the amplifier on a subwoofer box or on vibrating parts of the vehicle, since the vibrations can cause damage to the amplifiers electrical components.

Installation of the amplifier

Before starting with the installation, mount the provided mounting brackets on the amplifier. Mark the location for the mounting screw holes by using the amplifier as a template. Drill holes at the marked locations as and firmly fasten the amplifier in place with the mounting screws supplied in the accessory kit. Before drilling or cutting any holes, investigate the layout of your automobile thoroughly: Take care when working near the gas lines or hydraulic lines and electrical wiring.

Electrical Connection

Ground (GND)

This wire is the electrical ground and must be fastened securely to the vehicle chassis. The best method is to use a threading sheet metal screw since the threads cut into bare metal. Ensure that all paint or other insulationis removed from around the hole area, and using self tapping screw, securely affix the bare wire ends to the vehicle chassis. Use as short a piece of cable as possible - use the same gauge as was used for the +12V cable. Make sure that the connection is safe and stable.

Remote (REM)

Connect the remote wire of your headunit with the remote turn-on of the power amplifier.

Battery Connection (+12V Power)

This wire is usually connected directly to the positive battery terminal. Ensure that the + power supply wire is fused via an in-line fuse near by the battery. Please use a sufficient gauge (min 16 mm) with spade lug with insulating sleeve.

Fuses

The integrated amplifier fuses protect the units from short circuit and overload. The fuse rating is for 4 Ohm loads (impedance) of the speakers, for 2/1 Ohm loads the fuses may have to get increased by up to 50% / 100% in case of higher power consumption.

Functions & Controls

RS2.1200

HP PASS (HighPass)

Controls the frequency response of your speakers downwards. The Cut-off frequency is continuously variable from 50Hz up to 400Hz.

LOW PASS (LowPass)

Controls the frequency response of your speakers upwards. The Cut-off frequency is continuously variable from 50Hz up to 400Hz

If the X-OVER - Switch is set on LP - position, so the HP PASS-controller is activated as Subsonic-Filter, who eliminates the lowest frequencies to protect the speakers from damages.

Speaker & RCA Connections

RS2.1200

INTERCONNECTION EXAMPLE 2-Channel Mode: 1x Stereo System (Front or rear)

RCA & Speaker wiring:

• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT of the amplifier with appropriate high-value RCA cables.
• Connect the front or rear speakers with the speaker outputs (LEFT -/+ and RIGHT -/+ SPEAKER) by using appropriate wires.
• Ensure by any means, that the total impedance load of all speakers is not lower than 2 ohms. Too low impedance cause high temperature
  and will shut down the amplifier operation.
• Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could damage the speakers.

CROSSOVER SETTINGS

• By using bigger speakers (more than 20cm) you can set the X-OVER switch to the FULL position (Full Range Signal).
• By using smaller speakers (8.7cm -16cm) you must set the X-OVER switch to the HPF Position (Highpass Mode) to avoid any damage
  by lower frequencies on the speakers. The cut-off frequency is adjustable with the HIGH PASS controller and should be set between
  45HZ to 30HZ, depending on the size of the speakers.
• The LOW PASS Controller is not in use in this interconnecting example.

LEVEL CONTROLLER

• Turn the LEVEL controller of the amplifier to the 6V position.
- Turn the volume controller of the headunit to 80 - 90% of its full setting.
- Turn the LEVEL controller clockwise until you hear some distortion.
- Then turn back the LEVEL controller slightly until you hear a cleaner sound.

BASS BOOST CONTROLLER

- The BASS BOOST controller must be turned to 0 dB position in this interconnecting example.

Speaker & RCA Connections

RS2.1200

INTERCONNECTION EXAMPLE 2-Channel Mode: 1x Mono Subwoofer bridged

RCA & Speaker wiring:

• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT of the amplifier with appropriate high-value RCA cables. If your headunit is equipped with a additional subwoofer lineout (SUB OUT), it is recommended to use this lineout.
• Connect the subwoofer with the speaker outputs (SPEAKER OUTPUT LEFT&RIGHT + Mono bridged-) by using appropriate wires.
• Ensure by any means, that the total impedance load of the channel-pair is not lower than 4 ohms. Too low impedance cause high temperature and will shut down the amplifier operation.
  • Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could damage the speakers.

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

CROSSOVER SETTINGS

- In the mono/subwoofer mode the X-OVER switch must set to the LPF/SPF position (Lowpass/Bandpass mode), thereby the higher frequencies will be eliminated. The cut-off frequency is adjustable with the LOW PASS controller and should be set between 40Hz to 500Hz, depending on the size of the subwoofer.

LEVEL CONTROLLER

• Turn the LEVEL controller of the amplifier to the 6V position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL controller clockwise until you hear some distortion.
• Then turn back the LEVEL controller slightly until you hear a cleaner sound.

BASS BOOST CONTROLLER

• The BASS BOOST controller adjusts the bass enhancement between 0db and +12dB.
• A too high bass boost may cause clipping/distortion and damage on the loudspeakers and also may harm your hearing abilities. Use this controller carefully!

Functions & Controls

RS4.1200/RS4.2000

HP/LOW PASS CH1/2&CH3/4
HP PASS (HighPass)
Controls the frequency response of your speakers downwards. The Cut-off frequency is continuously variable from 50Hz up to 400Hz
LOW PASS (LowPass)
Controls the frequency response of your speakers upwards. The Cut-off frequency is continuously variable from 50Hz up to 400Hz
If the X-OVER - Switch is set on LP - position, so the HP PASS- controller is activated as Subsonic Filter, who eliminates the lowest frequencies to protect the speakers from damages.

X-Over CH1/2 & CH3/4
Selects the operation modes of the amplifier which is required:
Position HPF:
Highpass/Subsonic (frequency response is limited downwards. It is controlled by the HP PASS-controller)
Position FULL:
Provides a full range signal to the speakers (whole frequency response).
Position LPF:
Lowpass (frequency response is limited upward. It is controlled by the LOW PASS-controller)

Protect-LED

If the red LED is illuminated:
a) Overheated
b) Speaker wires shorted
c) Overload (Impedance, less Power Supply)

d) Amplifier is damaged

The built-in electronic diagnostic protection saves the amplifier and speakers from serious damage. If the red LED lights up due to overheating, let the amplifier could down a while a turn it on again.
If the red light is still lighting up, ensure that all connections, especially the speakers are correct and not shorted.
If the amp is still in protection mode, try to restart the amplifier without any speaker or RCA wires.
If the green light is now lighting up, re-check again all speaker- and RCA-connections, to ensure correct connection.

Speaker & RCA Connections

RS4.1200/RS4.2000

4-Channel-Mode: 2 Frontspeakers / Stereo & 2 Rearspeakers / Stereo

Cable connection

• Connect INPUT of the amplifier to the head unit line output with good quality RCA cables. By connecting the RCA jacks OUTPUT with a additional amplifier, a full range signal will be provided to the amplifier.
• Connect the speakers with the terminal block (CH1 +/- und CH2 */ - SPEAKER) and
  (CH3 +/- and CH4 +/- SPEAKER) of the amplifier. • The minimum final speaker impedance must not be below 2 Ohm per channel. Too low speaker loads result in too high heat dissipation and may cause the amplifier run into protection.
• Please observe speaker channel and polarity as printed by the speaker terminal block. Incorrect phasing of the speakers results in total loss of bass response.

Caution

Please avoid to connect speaker (-) to the ground or vehicle chassis.

X-OVER- Switch & Control CH1/2 and CH3/4

• If larger than 20 cm speakers are used, the "FULL" position is recommended.
• For all smaller speakers (8.7cm - 16cm) the "HP"- Position (HIGH PASS) is recommended, which
  eliminates the lowest frequencies and protects the speakers from damage. Set the crossover-frequency
  between 50Hz - 40Hz, depending on the size of the installed speakers. The Highpass adjustment can be done with the HIGH PASS - Control. In this configuration the LOW PASS - Control is not in use.

LEVEL INPUT - Control CH1/2 and CH3/4

• Turn the LEVEL INPUT - Control on the amplifier to "6V" position.
• Turn the head unit volume control to about 80-90% of its full setting
• Turn the LEVEL INPUT - Control clockwise until you hear some distortion.
• Then turn back the LEVEL INPUT - Control slightly until you can hear clean sound.

BASS BOOST CH1/2 and CH3/4

- Turn the BASS BOOST - Control into "0dB" - position.

Speaker & RCA Connections

RS4.1200/RS4.2000

3-Channel-Mode: 2 Speakers/Stereo & 1 Subwoofer / Mono bridged

Cable connection

• Connect the INPUT of the amplifier to the head unit line output with good quality RCA cables. By connecting the RCA jacks OUTPUT with a additional amplifier, a full range signal will be provided to the amplifier.
• Connect the speakers with the terminal block (CH1 +/- & CH2 +/- SPEAKER OUTPUT and the subwoofer with CH3/4 + BRIDGED - SPEAKER OUTPUT) of the amplifier.
• The minimum final speaker impedance must not be below 2 Ohm per channel and 4 Ohm (Subwoofer) per channelpair. Too low speaker loads result in too high heat dissipation and may cause the amplifier run into protection.
• Please observe speaker channel and polarity as printed by the speaker terminal block incorrect phasing of the speakers results in total loss of bass response.

Caution

Please avoid to connect speaker (-) to the ground or vehicle chassis.

BASS BOOST- Control (Subwoofer on CH3/4)

- The BASS BOOST - Control adjusts the bass level at 45 Hz from 0dB up to 12dB. Caution! Please use the Bass -Boost carefully.

Functions & Controls

RS1.5000D

Low Pass

This Controller adjusts the frequency response of your subwoofer upwards and is continuously variable from 30Hz to 250Hz

Sub Sonic

This Controller eliminates the lowest frequencies to protect the subwoofer from damages. These low frequencies can cause damages. The frequency is adjustable from 20 Hz to 50 Hz.

Protect·LED

If the red LED is illuminated.

a) Overheated

b) Speaker wires shorted

c) Overload (Impedance, less Power Supply)

d) Amplifier is damaged

The built-in electronic diagnostic protection saves the amplifier and speakers from serious damage. If the red LED lights up due to overheating, let the amplifier could down a while a turn it on again.

If the red light is still lighting up, ensure that all connections, especially the speakers are correct and not shorted.

If the amp is still in protection mode, try to restart the amplifier without any speaker or RCA wires.

If the green light is now lighting up, re-check again all speaker- and RCA-connections, to ensure correct connection.

Speaker & RCA Connections

RS1.5000D

RCA & Speaker wiring:

• Connect the LINE INPUT of the amplifier to the head unit line output with appropriate good quality RCA cables. As optional feature the Balanced Inputs can be used. But therefor an signal transmitter with specific wires is required. Ask your specialist dealer for the required equipment.
  Connect the subwoofer with appropriate wires to the terminal block (SPEAKER OUTPUT + and -) of the amplifier. As optional feature a additional Subwoofer can be connected to the non-occupied terminals.
• The minimum final subwoofer impedance must not be lower than 1 Ohms in total. Too low speaker loads result in too high heat dissipation and may cause the amplifier run into protection.
• Please observe correct speaker channels and polarity as printed by the speaker terminal

Caution!

Do not connect speaker (-) to the ground or vehicle's chassis.

Low Pass

- This eliminates the higher frequencies. Set the crossover-frequency between 30Hz-250Hz, depending on the size of the installed subwoofer.

Sub Sonic

- This eliminates the lowest frequencies and protects the speakers from damage. Set the frequency between 20Hz-50Hz, depending on the size of the installed subwoofer.

Phase

- This Controller allows to adjust the Phase Shift 0^ to 180^ , to match the subwoofer to the vehicle's acoustic environment.

Input Level

• Turn the LEVEL control of the amplifier to 6V position.
• Turn the head unit volume control to about 80 - 90% of its full setting.
• Turn the LEVEL control clockwise until you hear some distortion.
• Then turn back the LEVEL control slightly until you can hear a clean sound.

Bass EQ

• This Controller regulates the Bass Boost from 0-12 dB.
  Caution! Please use the Bass-EQ carefully. The additional boost may result in clipping or overload.
  Bass Remote
• The provided Bass Remote regulates the Bass Level from f.i. the driver's seat.

Speaker & RCA Connections

RS1.5000D

MASTER / SLAVE-MODE / Subwoofer-Mode with two Amplifiers

- Connect the "LINE IN" (L & R) of the MASTER-amplifier to the head unit's line output with appropriate good quality RCA cables.

- Connect the "SLAVE OUT" RCA Output of the MASTER-Amp with the "LINE IN" RCA Input of the SLAVE-AMP.

- Connect the "REMOTE"-Terminal of the MASTER-Amp with the supplied BASS REMOTE.

- Connect the "REMOTE"-Wire of your head unit with the REM-Terminals of both Amplifiers.

- Connect the subwoofer with appropriate wire to the terminal block (SPEAKER OUTPUT + and -) of both amplifiers. As optional feature an

additional Subwoofer can be connected to the non-occupied terminals.

- Connect the Protect/Bridge Connection of the Master with the Protect/Bridge Connection of the Slave

This connection warrants if there is an operation fault both amps, Masler and Slave, would go into protection mode so the amps are prevented

for any possible damages.

• The minimum final subwoofer impedance must not be lower than 2 Ohms in total (1 Ohm for each Amplifier) or 2 Ohms bridged. Too low speaker

loads result in too high heat dissipation and may cause the amplifier run into protection.

- Please observe correct speaker channels and polarity as printed by the speaker terminal.

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

Caution: Please observe the right polarity. Slave's - to Loudspeaker's + and Slave's - to Loudspeaker's -

Functions & Controls

RS1.8000D

Low Pass

This Controller adjusts the frequency response of your subwoofer upwards and is continuously variable from 30Hz to 250Hz

Sub Sonic

This Controller eliminates the lowest frequencies to protect the subwoofer from damages. These low frequencies can cause damages. The frequency is adjustable from 20 Hz to 50 Hz.

Protect-LED

If the red LED is illuminated:

a) Overheated

b) Speaker wires shorted

c) Overload (Impedance, less Power Supply)

d) Amplifier is damaged

The built-in electronic diagnostic protection saves the amplifier and speakers from serious damage. If the red LED lights up due to overheating, let the amplifier could down a while a turn it on again.

If the red light is still lighting up, ensure that all connections, especially the speakers are correct and not shorted.

If the amp is still in protection mode, try to restart the amplifier without any speaker or RCA wires.

If the green light is now lighting up, re-check again all speaker- and RCA-connections, to ensure correct connection.

Speaker & RCA Connections

RS1.8000D

RCA & Speaker wiring:

• Connect the LINE INPUT of the amplifier to the head unit line output with appropriate good quality RCA cables. As optional feature the Balanced Inputs can be used. But therefore an signal transmitter with specific wires is required. Ask your specialist dealer for the required equipment.
  Connect the subwoofer with appropriate wires to the terminal block (SPEAKER OUTPUT + and -) of the amplifier. As optional feature a additional Subwoofer can be connected to the non-occupied terminals.
• The minimum final subwoofer impedance must not be lower than 1 Ohms in total. Too low speaker loads result in too high heat dissipation and may cause the amplifier run into protection.
• Please observe correct speaker channels and polarity as printed by the speaker terminal

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

Low Pass

- This eliminates the higher frequencies. Set the crossover-frequency between 30Hz-250Hz, depending on the size of the installed subwoofer.

Sub Sonic

- This eliminates the lowest frequencies and protects the speakers from damage. Set the frequency between 20Hz-50Hz, depending on the size of the installed subwoofer.

Phase

- This Controller allows to adjust the Phase Shift 0° to 180°, to match the subwoofer to the vehicle's acoustic environment.

Input Level

• Turn the LEVEL control of the amplifier to 6V position.
- Turn the head unit volume control to about 80 - 90% of its full setting
- Turn the LEVEL control clockwise until you hear some distortion
- Then turn back the LEVEL control slightly until you can hear a clean sound.

Bass EQ

• This Controller regulates the Bass Boost from 0-12 dB

Caution! Please use the Bass-EQ carefully. The additional boost may result in clipping or overload.

Bass Remote

- The provided Bass Remote regulates the Bass Level from f.i. the driver's seat

Speaker & RCA Connections

RS1.8000D

MASTER / SLAVE-MODE / Subwoofer-Mode with two Ampifiers

• Connect the "LINE IN" (L & R) of the MASTER-amplifier to the head unit's line output with appropriate good quality RCA cables.
• Connect the "SLAVE OUT" RCA Output of the MASTER-Amp with the "LINE IN" RCA Input of the SLAVE-AMP.
• Connect the "REMOTE" Terminal of the MASTER-Amp with the supplied BASS REMOTE
• Connect the "REMOTE"-Wire of your head unit with the REM-Terminals of both Amplifiers
• Connect the subwoofer with appropriate wires to the terminal block (SPEAKER OUTPUT + and -) of both amplifiers. As optional feature an additional Subwoofer can be connected to the non-occupied terminals.
• Connect the Protect/Bridge Connection of the Master with the Protect/Bridge Connection of the Slave.
  This connection warrants if there is an operation fault both amps, Master and Slave, would go into protection mode so the amps are prevented for any possible damages.
• The minimum final subwoofer impedance must not be lower than 2 Ohms in total (1 Ohm for each Amplifier) or 2 Ohms bridged. Too low speaker loads result in too high heat dissipation and may cause the amplifier run into protection.
• Please observe correct speaker channels and polarity as printed by the speaker terminal.

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

Caution: Please observe the right polarity. Slave's - to Loudspeaker's + and Slave's + to Loudspeaker's -

Functions & Controls

RS5.4500D

HP PASS (HighPass) CH1/2

Controls the frequency response of your speakers downwards. The Cut-off frequency is continuously variable from 10Hz up to 150Hz

HP PASS (HighPass) CH3/4

Controls the frequency response of your speakers downwards. The Cut-of frequency is continuously variable from 10Hz up to 150Hz

LOW PASS CH5

Controls the frequency response of your speakers upwards. The Cut off frequency is continuously variable from 30Hz up to 150Hz

Speaker & RCA Connections

RS5.4500D

INTERCONNECTION EXAMPLE 5-Channel Mode: 2x Stereo System (Front or rear)+1x Subwoofer

RCA & Speaker wiring:

• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT of the amplifier with appropriate high-value RCA cables.
• Connect the front or rear speakers with the speaker outputs (Ch1+/- and Ch2 +/- SPEAKER), (Ch3 +/- and Ch4 +/- SPEAKER)
  and (CH5 +/- SPEAKER) by using appropriate wires.
• Ensure by any means, that the total impedance load of all speakers is not lower than 2 ohms. Too low impedance cause high temperature and will shut down the amplifier operation.
  • Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could damage the speakers

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

• By using bigger speakers (more than 20cm) you can set the X-OVER switch to the FULL position (Full Range Signal).
• By using smaller speakers (8.7cm - 16cm) you must set the X-OVER switch to the HPF Position (Highpass Mode) to avoid any damage by lower frequencies on the speakers. The cut-off frequency is adjustable with the HIGH PASS controller and should be set between 10Hz to 150Hz(CH1/2) and 10Hz to 150Hz(CH3/4), depending on the size of the speakers.
  • The LOW PASS Controller is not in use in this interconnecting example.

LEVEL CONTROLLER

• Turn the LEVEL controller of the amplifier to the 6V position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL controller clockwise until you hear some distortion.
- Then turn back the LEVEL controller slightly until you hear a cleaner sound.

BASS BOOST CONTROLLER

• The BASS BOOST controller must be turned to 0 dB position in this interconnecting example

Speaker & RCA Connections

RS5.4500D

INTERCONNECTION EXAMPLE 3-Channel Mode: 1x Stereo System (bridged)+1xSubwoofer

RCA & Speaker wiring:

• Connect the RCA lineouts of the headunit with the RCA jacks LINE INPUT of the amplifier with appropriate high-value RCA cables.
• Connect the front or rear speakers with the speaker outputs (Ch1+/- and Ch2 +/- SPEAKER), (Ch3 +/- and Ch4 +/- SPEAKER) by using appropriate wires.
• Ensure by any means, that the total impedance load of all speakers is not lower than 2 ohms. Too low impedance cause high temperature and will shut down the amplifier operation.
  • Always ensure the correct polarity of the speakers. The interchange of plus and minus cause total loss of bass playback and could damage the speakers

Caution!
Do not connect speaker (-) to the ground or vehicle's chassis.

Bass Remote Control - connection for remote control. This controller regulates the Bass Level from e.g. the driver's seat.

• By using bigger speakers (more than 20cm) you can set the X-OVER switch to the FULL position (Full Range Signal).
• By using smaller speakers (8.7cm - 16cm) you must set the X-OVER switch to the HPF Position (Highpass Mode) to avoid any damage by lower frequencies on the speakers. The cut-off frequency is adjustable with the HIGH PASS controller and should be set between 10Hz to 150Hz(CH1/2) and 10Hz to 150Hz(CH3/4), depending on the size of the speakers.
• The LOW PASS Controller is not in use in this interconnecting example.

LEVEL CONTROLLER

• Turn the LEVEL controller of the amplifier to the 6V position.
• Turn the volume controller of the headunit to 80 - 90% of its full setting.
• Turn the LEVEL controller clockwise until you hear some distortion
• Then turn back the LEVEL controller slightly until you hear a cleaner sound

BASS BOOST CONTROLLER

• The BASS BOOST controller must be turned to 0 dB position in this interconnecting example.

Troubleshooting

System does not turn on

1. Check all fuses.
2. Check all connections
3. Measure the +12 volt and remote turn on voltages at the amplifier terminals. If these are non-existent or low, take voltage measurements at fuse holders, distribution blocks, the head unit's +12 volt and remote leads to localize the problem.

Noise problems

1. Check the speaker wiring
2. Speakers are damaged

No Signal at all Channels

1. Set Balance and Fader from head unit on Zero-Position
2. Check wiring (Amplifier, Speakers)
3. Speakers are damaged
4. Subsonic Filter is adjusted too high or Lowpass Filter is adjusted too low

Hiss or white noise

1. Speakers are overload
2. High levels of white noise usually occurs when amplifier level controls are turned up too high - readjust according to the procedures in section "Setting up systems after installation for best performance"
3. Another problem that can cause excessive hiss, is a noisy head unit - unplug the amplifier input RCA cables, and if the hiss level reduces, the source unit is at fault:

No Stereo-Sound or Low Output

1. Check speaker wiring (- and +)

Amplifier Protection-Mode (red LED is illuminated)

1. Speaker labels are shorted
2. Inadequate cooling - relocate or remount to provide better natural airflow over the fins.
   Driving high power levels into low impedances - back off on the volume control, and/or make sure you are not loading the amplifier with less than the recommended loudspeaker impedance.
3. Make sure that the battery voltage, as measured at the amplifier's +12 volt and ground terminals, is 11 volts or more.

Electrical interference

The inside of an automobile is a very hostile electrical environment. The multitude of electrical systems, such as the ignition system, alternator, fuel pumps, air conditioners to mention just a few, create radiated electrical fields, as well as noise on the +12 volt supply and ground. Remember to isolate the problem - first unplug amplifier input RCAcables, if the noise is still present, check the speaker leads, if not, plug the RCA's back, and investigate the source driving the amplifier, one component at a time

A ticking or whine that changes with engine RPM:

1. This problem could be caused by radiation pickup of RCA cables too near to a fuel pump or a distributor, for instance, - relocate cables.
2. Check that the head unit ground is connected straight to the vehicle chassis, and does not use factory wiring for ground.
3. Try to supply the head unit with a clean +12 volt supply directly from the battery +, instead of using a supply from the in dash wiring/fusebox. This level of noise can be more difficult to pinpoint, but is usually caused by some kind of instability causing oscillations in the system.

A constant whine:

1. Check all connections, especially for good grounds.
2. Make sure that no speaker leads are shorting to exposed metal on the vehicle chassis.
3. RCA cables are notorious for their problematic nature, so check that these are good, in particular the shield connections

Caution!

In this amplifier are integrated protection circuits. Short Circuit Protection engaged: The amplifier will turn off and try to come back on immediately. The amplifier will cycle like this incontinuity, with "bips" of sound each time, if this is the case, check your speakers and wring for low impedance and short circuits. Thermal Protection engaged: The amplifier will turn off and several minutes later will come back on. In this case, ensure that there is nothing blocking the normal convective airflow of the amplifier. No obstruction should be within 10 seconds of the amplifier on all sides. NOTE: Low battery voltage will cause the power of the amplifier. If the red LED still lighting up after all re-checking, the amplifier is damaged. Please send then a detailed malfunction description and a copy of the invoice of purchase together with the device to you car audio retailer.