Home / Amplifiers / Radio Design Labs SF-MA100A Format-A to 100 W Mono Audio Mixer-Amplifier - 70 V or 100 V

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Radio Design Labs SF-MA100A Format-A to 100 W Mono Audio Mixer-Amplifier - 70 V or 100 V

Name: Radio Design Labs SF-MA100A Format-A to 100 W Mono Audio Mixer-Amplifier - 70 V or 100 V
Brand: Radio Design Labs
SKU: SF-MA100A
Price: 1012.80 GBP
Availability: OutOfStock

£1,012.80inc. VAT

£844.00 ex. VAT

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Bought in the UK, backed in the UKWhy it matters →

Sourced through UK distribution
UK manufacturer warranty
UK-based engineers
No import duty or customs charges
GBP pricing, UK VAT invoices

Call 01342 580255

Return within 14 days

Installation services available Purchase orders: education customers only

7 Years Warranty Included

Key specifications

InputRDL TP Format-A

Input ConnectionRJ45

Format-A Signal Pairs Used (3)A, B, C

Format-A OutputRJ45 (loop-through)

CMRR> 80 dB (50 Hz to 150 Hz)

Headroom above +4 dBu input> 18 dB

Power Amplifier Output100 W RMS (70 or 100 V)

Frequency Response+0/-3 dB (50 Hz to 20 kHz; -0.25 dB typical at 20 kHz)

All 23 specifications

Description

The SF-MA100A is an audio power amplifier that receives three audio channels on an RJ45 Format-A connector. The three inputs are mixed either by the three rear-panel potentiometers or remotely by the three potentiometers on the remote control (available separately). Local or remote control is defined by the Mode switch on the rear panel. If the mixer is remote-controlled, the rear-panel potentiometers set the maximum gain applied to each input.

Full specifications Datasheet Compare alternatives

At the normal gain setting, the output provides a 70 V or 100 V constant voltage amplified output at 100 watts for an audio input level of +22 dBu. The three Format-A pairs feed through to the LOOP OUT jack to feed additional amplifiers or other Format-A receivers.

Input gain is set by the installer using the rear-panel single-turn potentiometers with an associated dual-LED VU meter calibrated to 10 dB below maximum power output. The SF-MA100A is equipped with internal VCAs for setting the mixer input levels or amplifier output level. The REMOTE CONTROL RJ45 jack provides for the connection of an RDL D*-RLC10KM type remote level control for Mode 2, or an RDL D*-RC3 for Mode 3. It is also possible to use the RJ45 jack to connect external 10 kΩ potentiometers or a 0 to 10 Vdc control voltages. VCA control insures long term noise-free level adjustment.

A selectable audio compressor is provided to add up to 15 dB additional headroom to the power amplifier input. The compressor is designed to remain aurally transparent using automatically adjusting attack and release times. The amplifier is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output stage produces minimal heat for all levels of expected voice or music modulation.

The SF-MA100A is equipped to operate from an included external 48 Vdc power supply.

The SF-MA100A is constructed in a durable, professional all-metal enclosure suitable for free-standing, surface-mounted or rack-mounted operation. This full-featured SYSFLEX product is engineered and manufactured in the U.S.A. for continuous duty in demanding installations. The versatility of SYSFLEX products adds enormous flexibility in the design and installation of professional A/V systems.

Manufacturer part number SF-MA100A.

Call 01342 580255

Key features

Input

RDL TP Format-A

Input Connection

RJ45

Format-A Signal Pairs Used (3)

A, B, C

Format-A Output

RJ45 (loop-through)

CMRR

> 80 dB (50 Hz to 150 Hz)

Headroom above +4 dBu input

> 18 dB

Power Amplifier Output

100 W RMS (70 or 100 V)

Frequency Response

+0/-3 dB (50 Hz to 20 kHz; -0.25 dB typical at 20 kHz)

Technical specifications

Connectivity

InputRDL TP Format-A

Input ConnectionRJ45

Format-A OutputRJ45 (loop-through)

Headroom above +4 dBu input> 18 dB

Power Amplifier Output100 W RMS (70 or 100 V)

Inputs (3)Pair A, Pair B, Pair C

Audio

Audio MeteringDual-LED VU Meter calibrated to 10 dB below full output power

Power & Physical

DimensionsHeight: 1.68 in. (4.27 cm); Width: 8.71 in. (22.12 cm); Depth: 7.8 in. (19.81 cm)

Shipping Weight5.46 lbs.

General

Format-A Signal Pairs Used (3)A, B, C

CMRR> 80 dB (50 Hz to 150 Hz)

Frequency Response+0/-3 dB (50 Hz to 20 kHz; -0.25 dB typical at 20 kHz)

THD+N< 1% (100 W)

Noise<-85 dB (below max power); <-75 dB (below 1/8 power)

CompressorSelectable (IN/OUT), threshold 2 dB below rated output, automatic adjusting attack and release times; adds 15 dB headroom to power amplifier input

FunctionInputs summed using remote control (see RDL D*-RC3 type remote)

Gain Adjustments (3)Single turn audio taper; sets maximum gain available for associated input pair

VCARJ45, 0 to 10 Vdc control (compatible with RDL D*-RLC10KM wall controls)

VCA (3)RJ45, 0 to 10 Vdc control (compatible with RDL D*-RC3 wall controls)

Indicators (5)Front-panel: Ready (green), Overload Shutdown (red), Rear-panel: dual-LED VU meter (2), Format-A Power (green)

Ambient Operating Environment0° C to 50° C

Power Supply (included)100 to 240 Vac, 50-60 Hz, IEC C14; Output to module: 48 Vdc

Plenum Rating StandardUL 2043

Call 01342 580255

Documents

Radio Design Labs SF-MA100A Format-A to 100 W Mono Audio Mixer-Amplifier - 70 V or 100 V — RDL Datasheet

Delivery & returns

Estimated delivery 9 Sept - 13 Sept. UK mainland delivery only. Some large or made-to-order items carry longer lead times, shown on the product page.

Unused items in original packaging can be returned within 14 days of delivery — see the returns policy for how business and consumer returns differ. Faulty items are covered under manufacturer warranty and by your statutory rights.

Full delivery & returns policy

Bought in the UK, backed in the UK

This item is sourced through UK distribution and ships to you from within the UK, so the order never crosses a customs border.
The manufacturer warranty is honoured here in the UK. If something fails, you deal with us, not with an overseas seller in another time zone.
Our own UK-based engineers install, commission and support what we sell, and can attend site when a system needs hands on it.
Delivered within the UK mainland, so there is no import duty, customs charge or courier handling fee waiting for you on delivery.
Prices are in pounds sterling with proper UK VAT invoices, and purchase orders are accepted from approved education accounts: no currency conversion and no surprises at the door.

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