Connections
Digital input: 1 x balanced digital (AES/EBU) input on RJ45. 32kHz – 96kHz sampling rates. Digital output: 1 x RJ45 with balanced digital audio and control for a second loudspeaker. 9-pin D connector for RS232 PC setup and control, null modem, 9600 baud, 2N1, no handshake.

Digital formats
44.1–96kHz. FIFO locks at 44.1, 48, 88.2, or 96kHz ±150ppm. PCM using SPDIF/IEC60958, or MHR connection support with auto-detection.

Signal processing
1 x Motorola 56364 running at 100MHz.
1 x 24-bit Multi-bit delta-sigma DAC with 128x oversampling.
Crossover linear-phase ±30º at 2.3kHz.

Output stages
Power amplifiers: Low feedback complementary bipolar design, with output-stage error correction and twin loop design.
Bass: 85W RMS.
Treble: 65W RMS.

Acoustic
Bass drive units: 2 x 127mm (5in) carbon fibre custom drivers, cast alloy chassis.
Treble drive unit: 1 x 25mm (1in) aluminium dome, neodymium magnet, with protective grille.

Characteristics
Distortion: Typically <0.01%, or <0.05% up to full power at all frequencies.
Noise and hum: <-95dBr at all volume settings.
Acoustic output: Typically >104dB spl @ 1m.
Acoustic noise: <15dB spl @ 1m.
Frequency response: 55Hz-20kHz ± 3dB

Cabinet
Aluminium front baffle with sealed, mechanically dampened and insulated acoustic enclosure.
Dimensions: Frame 457mm (18in) square x 89mm (3.5in).
Hole cutout 420mm (16.54in) square.
Weight: 8.5 kg (18.7 lb) main unit without frame, grille or connection boxes.

Power
Power: 100-125; 200-250V AC 50-60Hz.
6VA idle; 200VA max.

Available accessories
The DSP420 is shipped ready to be used as a loudspeaker in a small Meridian Digital Theatre with a Meridian DVD Player (such as the 800 or G96) or a Meridian Digital Surround Controller (such as the 861, G68, or G61R). Other applications, and some advanced features, may require one or more of the following accessories, which can be purchased from your Meridian retailer:
Meridian System Remote Plus (MSR+).
G12 Remote Eye for remote control reception.
Meridian SpeakerLink cables (available in various lengths).

Meridian Audio reserves the right to amend product specifications at any time.