FONESTAR DSA-302

Product overview

The FONESTAR DSA-302 is a digital stereo power amplifier with 2 x 300 W RMS at 4 Ω, 2 x 200 W RMS at 8 Ω or 600 W RMS in bridge mode at 8 Ω, in 1 U of 19 inch rack.

The DSA series amplifiers deliver high power and sound quality. The DSA-302 is a class D power amplifier of high efficiency and reliability with a switched-mode power supply. Soft start, forced ventilation with variable speed and protection circuits (temperature, short circuit, overload, VHF, DC, AC and channel limiter) give high reliability. Audio inputs use standard XLR and 6.3 mm jack combo connectors with a volume control for each channel, and the speaker outputs offer screw terminals, banana plugs or a loudspeaker connector. It is very user-friendly with minimal set-up time, for mobile events and fixed installations.

Key features

• Professional digital stereo power amplifier
• High efficiency class D circuit and switch-mode power supply
• Stereo and parallel: 300 + 300 W RMS at 4 Ω, 200 + 200 W RMS at 8 Ω
• Bridge mode: 600 W RMS at 8 Ω
• Balanced combo inputs (XLR and 6.3 mm jack) with volume per channel
• Outputs on screw terminals, banana plugs or loudspeaker connector
• Soft start, forced ventilation, protections and channel limiter
• GND lift switch
• 1 U 19 inch rack, 2.75 kg

Three operating modes

A selector on the rear sets the mode. In stereo the two channels work independently. In parallel the CH A input feeds both channels, each with its own volume. In bridge the two channels combine into one 600 W RMS output for an 8 Ω loudspeaker, taken from the positive terminals or the CH A loudspeaker connector.

Built for reliability

Soft start, forced ventilation with variable speed and protection against temperature, short circuit, overload, VHF, DC and AC, plus a channel limiter, keep the amplifier working through long events.

Simple connection

Balanced line inputs on combo connectors (20,000 Ω), CLIP and SIGNAL lights per channel and a GND/LIFT switch to remove ground noise make set-up quick on stage or in the rack.

In the box

• DSA-302 power amplifier

Available versions

• DSA-302: black

FONESTAR DSA-302: frequently asked questions

How much power does the DSA-302 give?

300 + 300 W RMS at 4 Ω and 200 + 200 W RMS at 8 Ω in stereo or parallel mode, or 600 W RMS at 8 Ω in bridge mode.

Which input is used in bridge or parallel mode?

INPUT CH A. In bridge mode set both volume controls to the same position to avoid distortion.

What speaker connections does it have?

Screw terminals, banana plugs or a loudspeaker connector for each channel.

How big is it?

483 x 44 x 200 mm (depth), 1 U of 19 inch rack, and it weighs 2.75 kg.

Where can I buy the FONESTAR DSA-302 in India?

The FONESTAR DSA-302 is available from Shivansh Electronics, Kolkata, West Bengal, India, with delivery across India.

Workflow 1: Stereo PA for an event

Left and right loudspeakers at a concert or meeting.

Connections

Setup

1. Set the mode selector to STEREO.
2. Connect both inputs and both outputs.
3. Raise each channel's volume on the front.
4. Watch the CLIP lights and lower the level if they stay on.

Tip: 300 + 300 W RMS at 4 Ω.

Workflow 2: Two zones from one source

The same programme to two loudspeaker groups.

Connections

Setup

1. Set the mode selector to PARALLEL.
2. Connect only the CH A input.
3. Connect both outputs.
4. Set each channel's volume for its area.

Tip: Each channel keeps its own volume.

Workflow 3: Subwoofer in bridge

One 8 Ω loudspeaker with all the power.

Connections

Setup

1. Set the mode selector to BRIDGE.
2. Connect the CH A input.
3. Connect the 8 Ω loudspeaker to the bridge output.
4. Set both volume controls to the same position.

Tip: 600 W RMS at 8 Ω.

Workflow 4: Disco or pub rack

Fixed installation in a 19 inch rack.

Connections

Setup

1. Mount the amplifier in 1 U of the rack.
2. Leave room for the forced ventilation.
3. Wire the loudspeakers to match the output impedance.
4. Switch on after all connections are made.

Tip: Soft start protects the mains at power on.

Workflow 5: Auditorium reinforcement

Speech and music in a hall.

Connections

Setup

1. Use balanced XLR cables from the desk.
2. Select STEREO mode.
3. Set the volumes for even coverage.
4. Use GND LIFT if ground noise appears.

Tip: Balanced inputs keep long cable runs quiet.

Workflow 6: Monitor amplifier

Stage monitors at a festival.

Connections

Setup

1. Select STEREO so each monitor mix is independent.
2. Connect each wedge to its channel.
3. Set levels with the front volume controls.
4. Check the SIGNAL lights for each channel.

Tip: Compact 1 U size travels easily.