axxent AX4120TS-D Professional 4 Channel Power Amplifier Instructions

: June 13, 2024
: axxent

Table of Contents

Introduction
The most important features
Technical Data Class AB output stages
OPERATING ELEMENTS BACKSIDE
OPERATING ELEMENTS FRONTSIDE
Performance characteristics
Tender text
CUSTOMERS SUPPORT
Read User Manual Online (PDF format)
Download This Manual (PDF format)

axxent AX4120TS-D Professional 4 Channel Power Amplifier

axxent AX4120TS-D Professional 4 Channel Power
Amplifier

Introduction

The professional audio amplifiers of the axxent TS series are optimised for use in fixed installations. The 4-channel model AX4120TS-D complements this series with an output power of 120 W/channel and 240 W mono bridged per pair. In addition to the analogue inputs, this model has a Dante digital input for easy networking. The switching power supply saves weight and increases efficiency and power balance.

Each of the 4 channels offers an independent clip limiter with separate indicators on the front panel. Excellent audio quality throughout the power range is supported in the inputs by special balanced integrated circuits with high common-mode rejection.

In addition to the constant voltage outputs with 70 and 100 V taps, low- impedance outputs are also available.

Galvanic isolation by means of high-quality audio output transformers enables earth-fault monitoring and serves to protect the 100 V lines against accidental contact.

The rated output power is 120 W into 100 V and 4 and 8 ohms per channel. These flexible output configurations make the AX4120TS-D 4-channel amplifier the ideal choice for use in fixed installations. The four amplifier channels can be operated individually or in bridge mode (2×240 W at 8 ohms) for power bundling. The only adjustment elements on the front panel are the input level controls. To protect against unintentional or unauthorised adjustment, the control knobs can be removed and replaced with the supplied blanking plugs.

The connections – inputs: analogue balanced XLR and digital with Dante compatibility. Analogue/digital switching is individually selectable for all four channels. All outputs, low impedance and 70 V/100 V, have 10-pin Phoenix screw terminal connectors. Mains voltage input via IEC connector. The robust housing is made of reinforced, powder-coated sheet steel. CE certification for Europe-wide use.

The most important features

Output power 4×120 Wrms with all constant voltage output configurations (70/100 V) and with low impedance outputs (4 and 8 ohms). In bridge mode 2×240 Wrms at 8 Ohm.
Analogue balanced XLR inputs, digital Dante input.
All four channels switchable analogue/digital.
Euroblock output connector for all outputs.
High-quality audio output transformers for galvanic isolation enable earth-fault monitoring and serve to protect against contact with 100 V lines.
Two-speed fan with automatic control.
Removable knobs and blanking plugs and rear on-off switches for security against unauthorised change of settings.
IEC mains socket on the rear of the unit facilitates cabling in the rack.
Dimensions: 484 x 88 x 387 mm (WxHxD)
Net weight: 14 kg without enclosed mains cable
Scope of delivery: amplifier, mains cable, 4 blanking plugs
European quality product

Technical Data Class AB output stages

Output power 100V (equal for 8 Ohm) Power 1 kHz
THD 1%
single-channel operated ………………. 128 W per channel
two channels operated …………………. 124 W per channel
three channels operated ………………. 121 W per channel
All channels operated together ….. 117 W per channel
Bridge mode 1-2 (min.16 Ohm) ……. 234 W bridged
Bridge mode 3-4 (min.16 Ohm) ….. 234 W bridged

Frequency response +0/-2dB
20 Hz 20 kHz

Distortion factor at -1 dB below nominal output power
<0,2%

Intermodulation distortion 60Hz and 7kHz at 4:1, -1dB below nominal output power
<0,4%

Input sensitivity analogue input at nominal power
0dBu (775 mV)

Voltage Gain, 100V
150x(43,8dB)

Voltage Gain, 8Ohm
43x(32,7dB)

Input impedance
10 kOhm unbalanced
20 kOhm balanced

Common mode rejection (1kHz)

80dB

Signal-to-noise ratio

90dB

Signal to noise ratio, „A“ weighted

100dB

Crosstalk

60dB

Input sensitivity Dante input at nominal power
0dBu (775 mV)

Switch to sensitivity ON
-9dBu(270mV)

Voltage gain 100V
155x(43,8 dB)

(Sensitivity -9dB)
422x(52,5 dB)

Voltage gain 8 Ohm
44x(32,8dB)

(Sensitivity -9dB)
121x(41,7dB)

Sampling rate
48kHz

DA converter
24bit

Input connector, analogue
3-pin XLR female, balanced

Input connector, digital
RJ45 socket, Dante conform

Output connector
10-pole Phoenix terminal connector
4 Ohm, 70 V and 100 V constant voltage

Cooling
2 speed fan

Protective measures
Overload, short circuit, thermal

Mains voltage
230V AC / 50 Hz

Dimensions
483x88x387 mm (WxHxD)

Weight
14 kg without packaging and power connection cable (enclosed)

OPERATING ELEMENTS BACKSIDE

Operating Elements Backside

Mains switch
Mains plug connection
Analogue / Dante switch
Switch for digital sensitivity 0dB / -9dB
Ethernet Dante connection
Dante reset button
4x analogue XLR input
2x Phoenix 10-pole plug output

OPERATING ELEMENTS FRONTSIDE

Operating Elements Frontside

Volume control (each channel)
Operating display (each channel) Signal display (each channel) Limit value display (each channel)
2x bridge display (1+2, 3+4 channel) 1x Protect indicator

Performance characteristics

(measured with 4-channel operation)

Duty cycle

| Power draw| Current draw| Volt-Ampere|

Power factor

---|---|---|---|---

IDLE

| 40W| 0.35A| 82| 0.5
1/8| 308W| 2a| 484|

0.64

1/3

| 482W| 3.1A| 737| 0.65
1/1| 760W| 4.7A| 1116|

0.67

Tender text

Four-channel audio power amplifier with constant voltage outputs (70/100 V) and additional low-impedance outputs; rated output power 4×120 W (RMS) into 70/100 volt and 8 ohms, bridged per amplifier channel pair 234 W into 16 ohms; energy-saving switch-mode power supply, inputs 3-pole XLR connector analogue and RJ45 connector for Dante digital input signal. Outputs: 10-pin Euroblock (Phoenix) screw terminal connections. Two-speed fan, automatically controlled. LED indicators for operation, signal, limit and bridge operation as well as protection function. Adjusters at the front for gain (volume), which can be covered to prevent accidental misuse. Blanking plugs included in delivery. Mains switch on rear of unit; detachable mains cable, IEC plug. Dimensions 483×88 (2U) x 387 mm (WxHxD). Net weight 14 kg. The amplifier shall be an axxent model AX4120TS-D.