Audison SR Series User's Manual

1. Precautions

Before installing and operating the Audison SR series amplifiers, please read all instructions carefully. Failure to follow these guidelines may result in damage to the product or personal injury.

• Ensure your vehicle has a 12 VDC negative ground electrical system.
• Verify the alternator and battery can support the increased power consumption.
• Avoid installation in areas exposed to water, excessive humidity, dust, or dirt, such as the engine compartment.
• Never run cables outside the vehicle or near electronic components that could cause interference.
• Install the amplifier in locations with ambient temperatures between 0°C (32°F) and 55°C (131°F). Ensure adequate ventilation around the amplifier; covering the heat sink can cause overheating and protection mode activation.
• The amplifier can reach temperatures up to 80°C (176°F). Allow it to cool before touching.
• Clean the amplifier periodically using a damp cloth with mild soap. Avoid aggressive solvents and compressed air.
• Ensure the chosen installation location does not interfere with the vehicle's mechanical or electrical systems.
• Prevent short circuits when handling power cables, especially during connection to the battery.
• Exercise caution when drilling or cutting vehicle panels to avoid electrical wiring or structural elements.
• Route power supply cables carefully, avoiding sharp edges and moving parts. Use rubber grommets for protection where cables pass through metal.
• Secure all cables properly along their length with flame-resistant, self-extinguishing protective jackets. Use clamping screws near the amplifier's power terminals.
• Select appropriate cable gauge based on amplifier power and recommended charts. Use high-quality cables, connectors, and accessories.
• Plan the amplifier configuration and wiring routes before installation for ease and efficiency.
• Keep the product in its original packaging until ready for final installation to prevent accidental damage.
• Always wear protective eyewear when using tools.

Typical Installation Sequence:

1. Turn off the audio system source and all other electronic devices before installation.
2. Run the power wire from the battery to the amplifier location using a cable with adequate AWG.
3. Connect the power supply with correct polarity: positive (+) to the battery cable, negative (-) to the vehicle chassis.
4. Install an insulated fuse holder no more than 40 cm from the battery's positive terminal, connecting the power cable to it. Do not install the fuse yet.
5. Ensure a proper ground connection by scraping paint/grease from the chassis and using a screw. Verify continuity between the battery negative terminal and the ground point. Connect all components to the same ground point if possible to minimize noise.
6. Route all signal cables together and away from power cables.
7. Connect RCA input cables. The signal level should be between 0.2 VRMS and 5 VRMS (0.32 VRMS - 8 VRMS for SR 6.600).
8. Connect high-level inputs using the appropriate plug. The signal level should be between 0.8 VRMS and 20 VRMS (1.6 VRMS - 40 VRMS for SR 6.600). Do not use high-level inputs if pre-amplified connections are already in use.
9. Connect speaker outputs using 10 AWG maximum speaker cable.
10. Do not connect the negative (-) speaker outputs together. If using an external crossover, ensure its negative poles are not interconnected.
11. The amplifier turns on by connecting the REMOTE IN terminal to the source's remote output. It can also turn on automatically via high-level inputs (Speaker IN) by setting the "AUTO TURN ON" switch to ON.
12. The blue LED indicates the product is powered on. A red LED indicates overload, thermal protection, speaker cable short circuits, or amplifier malfunction.
13. Fuses are located near power and speaker terminals. Replace fuses only with those of the same rating.
14. Secure all installed components to the vehicle structure for stability and safety. Detached components can cause serious damage.
15. After installation, check all wiring and connections.
16. Insert the fuse into the holder. The fuse rating should be 30% higher than the amplifier's built-in fuse. If powering multiple amplifiers, the fuse rating should be 30% higher than the sum of all amplifier fuses.
17. Calibrate listening levels by setting the source volume to 3/4 maximum, then adjust amplifier levels until distortion is heard.
18. Refer to the Audison website for warranty information.

Safe Sound: Use common sense and practice safe sound. Prolonged exposure to high sound pressure levels can damage hearing. Safety must be prioritized while driving.

Waste Electrical and Electronic Equipment (WEEE): Products marked with a crossed-out wheeled bin symbol should not be disposed of with regular household waste. They must be recycled at appropriate facilities. Contact your local municipal office for recycling information. Proper disposal protects the environment and health.

2. Installation and Sizes

Dimensions for each model are provided in millimeters and inches.

3. Cable Size Calculation Tables

These tables help determine the correct cable gauge for power supply and speaker connections based on current draw, power, and cable length.

3.1 Power Supply Cable

Table showing recommended minimum gauge size (AWG and mm²) for main power and power flow cables based on current draw (A) and cable length (m).

3.2 Speaker Cable

Chart showing recommended cable size (AWG) based on applied power (W) and connection length (m).

4. Power Supply and Remote IN Connection / Fuse Replacement

Instructions for connecting the power supply and remote turn-on signal, and how to replace fuses.

• Fuse Replacement: Firmly press fuse contacts into holder clips.
• Apply a fuse close to the battery positive pole to protect the battery cable. Maximum distance: 20 cm / 7.9 in.
• Diagrams illustrate power supply connections (+12V, GND, POSITIVE, NEGATIVE) and remote cable connection (REMOTE OUT, REMOTE IN).
• Multiple Power Supply Connection: Diagrams show correct and incorrect methods for connecting multiple amplifiers to the power supply, emphasizing the use of a fuse holder and proper grounding.

5. Subwoofer Remote Volume Control: VCR-S2 Installation

Details on how to connect the optional VCR-S2 remote volume control to the SR series amplifiers for subwoofer volume adjustment. The VCR-S2 is typically active on specific channels (e.g., B Ch for SR 4.500, SUB Ch for SR 5.600, C Ch for SR 6.600).

6. PRE IN / SPEAKER IN / PRE OUT

Explanation of input and output connections:

• PRE IN: For pre-amplified signals (0.2-5 VRMS, or 0.32-8 VRMS for SR 6.600).
• SPEAKER IN: For high-level signals (0.8-20 VRMS, or 1.6-40 VRMS for SR 6.600).
• PRE OUT: Provides a full-range or filtered signal output.
• Filters: High-Pass (HP) and Low-Pass (LP) filters are available with adjustable frequencies and slopes (e.g., 12 dB/Oct, 24 dB/Oct).
• Phase: Adjustable phase control (0° to 180°).
• Bass Boost: Adjustable bass boost at 50 Hz.
• Subsonic Filter: Filters frequencies below 25 Hz at 24 dB/Oct.
• ART (Auto Turn On): Enables automatic turn-on via speaker input signal when the remote turn-on signal is not available.
• LED Indicators: Blue LED for power ON, Red LED for protection/overload/fault conditions.
• Fuse Replacement: Locate fuses near power terminals and replace with the same rating.

Diagrams illustrate these connections for different models (SR 1.500, SR 4.300/SR 4.500, SR 5.600, SR 6.600), showing how to connect sources and speakers.

7. Auto Turn-On by Speaker IN (without REMOTE IN)

This section explains how to use the ART (Auto Turn On) feature, which allows the amplifier to turn on automatically when it detects an audio signal through the speaker inputs, eliminating the need for a remote turn-on wire from the head unit.

Diagrams show the ART switch and its connection to the speaker input for various models.

8. Installation Examples

Detailed wiring diagrams illustrate common installation configurations for different Audison SR amplifier models and speaker setups.

• SR 1.500:
• 1CH: Filtered Subwoofer
• 1CH: Filtered 2 x 2 Subwoofer
• SR 4.300 / SR 4.500:
• 4CH: A Ch + B Ch (for front and rear speakers)
• 4CH: Woofer + Mid/Hi (for multi-way speaker systems)
• 3CH: Front + Sub (for front speakers and subwoofer)
• 2CH: Bridge Left + Right (for bridged speaker connections)
• SR 5.600:
• 5CH: Front + Rear + Sub
• 5CH: 2 Way Front + Sub
• 3CH: Front + Sub
• SR 6.600:
• 6CH: 3 Way Front
• 5CH: Front + Rear + Sub
• 3CH: Front + Sub

Each diagram shows the connections from the source unit to the amplifier's inputs (PRE IN or SPEAKER IN) and from the amplifier's outputs to the speakers/subwoofers, including the use of passive filters where applicable.

9. Block Diagrams

Internal signal flow diagrams for each amplifier model, illustrating how audio signals are processed through filters, level controls, and output stages.

• SR 1.500: Shows signal path from INPUT (PRE-IN/HI-IN) through filters (LO-PASS, HI-PASS, SUBSONIC), LEVEL, PHASE, BOOST, to PREOUT and AMP OUT. Includes VCA control and ART function.
• SR 4.300 / SR 4.500: Illustrates separate signal paths for A Ch and B Ch, including filter modes (FULL, HI, LO), filter frequency, levels, boost, and ART function. Shows connections to speakers and subwoofers.
• SR 5.600: Details signal flow for 5-channel operation, including front, rear, and subwoofer channels, with various filter and level controls.
• SR 6.600: Depicts the complex signal routing for 6-channel operation, covering front, rear, and subwoofer channels with advanced filtering and control options.

10. Technical Specifications

Detailed technical specifications for each Audison SR series amplifier model.

SR 1.500

SR 4.300

SR 4.500

SR 5.600

SR 6.600

Product Information

Manufacturer: Elettromedia

Website: audison.com

Contact: T +39 0733 870 870 - F +39 0733 870 880

Address: 62018 Potenza Picena (MC) Italy

All specifications subject to change without notice.