PA HIRE IN & AROUND GLOUCESTERSHIRE

 

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Amplifiers

Industry-standard Power Amplifiers from 550W/channel to 1,200W/channel

We stock power amplifiers that are adequate for most public address requirements, which can be hired individually or as part of (or to extend) a packaged PA system.

d&b audiotechnik

d&b audiotechnik D12

Our premium PA systems use D12 amplifiers. The D12 combines state-of-the-art DSP with a high-performance power-supply and output stage to provide our d&b audiotechnik loudspeakers with the best audio performance available.

Connectors

Input Analogue CH A/CH B: 3-pin XLRF

Input impedance: 44 kΩ, electronically balanced

CMRR, 20 Hz - 20 kHz: >63 dB

Maximum Input Level: +25 dBu (+27 dBu @ 0 dBFS)

Link Analogue CH A/CH B: 3-pin XLRM, signal parallel to Input

Input Digital AES/EBU: 3-pin XLRF

Input impedance: 110 Ω, transformer balanced

Sampling: 48 kHz / 96 kHz/ 2 Ch/n

Synchronisation, Word Sync: PLL-locked to source (slave-mode)

Link Digital (Output): 3-pin XLRM

Electronically balanced

Analogue signal buffering (refresh)

Power Fail Relay (bypass)

Out A/B: NL4

Remote: 2 × RJ45 parallel

Service: D-SUB-9 (female)

Protection Circuits

Mains inrush current limiter

230V: 5A RMS

110/115V: 10A RMS

Speaker switch-on delay: ≅2S

Overvoltage protection: up to 400 VAC

Self-resetting overtemperature protection: 75°C/167°F

Output S/C / O/C protection: ±60 A peak

Overload protection amplifier circuit: SOA of the output stage

Audio Data (linear setting with subsonic filter)

Rated output power (THD + N 0.1%, both channels driven)

8Ω: 750W

4Ω: 1,200W

Frequency Response (-1 dB): 28 HZ - 40 kHz

Distortion

THD+N, 20 Hz - 20 kHz: <0.1%

IM (SMTPE), 20 Hz - 20 kHz: <0.1%

Signal to Noise (unweighted RMS): >110 dBr

Damping Factor (20 Hz - 1 kHz into 4Ω): >200

Crosstalk (20 Hz - 20 kHz): <-65 dBr

Digital Signal Processing

Sampling Rate: 96 kHz / 27-bit ADC / 24-bit DAC

Basic Delay: 0.3 mS

ADC dynamic: >110 dB

Input dynamic: >127 dB

DAC dynamic: >110 dB

Power Supply

Autosensing switched-mode, 115/230 V, 50 - 60 Hz

Mains connector: Neutrik PowerCON, 20A

Mains Voltage 115 V (min./nom./max.): 98/115/134 V

Mains Voltage 230 V (min./nom./max.): 195/230/265 V

Mains Fuse: 2 × 20 mm, 10A Time Lag (T)

Dimensions

Width: 19″ (483mm)

Height: 3U

Depth: 353 mm

Weight: 9.5 kg

PDFD12 Hardware Manual

PDFD12 Software Manual

QSC

In all other systems we use amplifiers manufactured by QSC, principally:

QSC PLX3102

QSC amplifiers sound great with Martin Audio Blackline speakers. The PLX3102 (2 × 900 watts into 4 Ohms) is outstanding.

Stereo (both channels driven)

8Ω FTC 20 Hz - 20 kHz 0.05% THD: 550W

8Ω EIA 1 kHz 0.1% THD : 600W

4Ω FTC 20 Hz - 20 kHz 0.05% THD: 900W

4Ω EIA 1 kHz 0.1% THD: 1,000W

2Ω EIA 1 kHz 1% THD: 1,550W

Bridge Mono

8Ω FTC 20 Hz - 20 kHz 0.1% THD: 1,900W

8Ω EIA 1 kHz 0.1% THD: 2,100W

4Ω 1 kHz 1% THD: 3,100W

Signal to Noise 20Hz - 20 kHz 0.05% THD: -107 dB

Input Sensitivity @ 8Ω: 1.23 Vrms

Voltage Gain @ 8Ω: 35 dB

Output Circuitry: 2-Step Class H

Power Requirements1: 4.75A

Distortion (SMTPE-IM): <0.02%

Distortion (typical)

1/8 rated power, 20 Hz - 20 kHz: <0.02%

Full rated power, 20 Hz - 20 kHz: <0.02%

Damping Factor: >500

Input impedance: 20kΩ Balanced

Input Clipping: 11 Vrms (+21 dBu)

Cooling: Variable-speed fan, rear to front airflow

Input Connectors: XLR/TRS jack

Output Connectors: NL4

Amplifer Protection: S/C, O/C thermal, infrasonic, ultrasonic, RF. Stable into reactive or mismatched loads.

Load Protection: On/off muting, DC-fault power-supply shutdown.

Width: 19″ (483mm)

Height: 2U

Depth: 379 mm

Weight: 9.5 kg

QSC PLX3602

The PLX3602 (2 × 1,100 watts into 4 Ohms) is the most powerful amplifier in the range.

Stereo (both channels driven)

8Ω FTC 20 Hz - 20 kHz 0.05% THD: 725W

8Ω EIA 1 kHz 0.1% THD : 775W

4Ω FTC 20 Hz - 20 kHz 0.05% THD: 1,100W

4Ω EIA 1 kHz 0.1% THD: 1,250W

2Ω EIA 1 kHz 1% THD: 1,800W

Bridge Mono

8Ω FTC 20 Hz - 20 kHz 0.1% THD: 2,500W

8Ω EIA 1 kHz 0.1% THD: 2,600W

4Ω 1 kHz 1% THD: 3,600W

Signal to Noise 20Hz - 20 kHz 0.05% THD: -107 dB

Input Sensitivity @ 8Ω: 1.23 Vrms

Voltage Gain @ 8Ω: 36 dB

Output Circuitry: 2-Step Class H

Power Requirements1: 5.75A

Distortion (SMTPE-IM): <0.02%

Distortion (typical)

1/8 rated power, 20 Hz - 20 kHz: <0.02%

Full rated power, 20 Hz - 20 kHz: <0.02%

Damping Factor: >500

Input impedance: 20kΩ Balanced

Input Clipping: 11 Vrms (+21 dBu)

Cooling: Variable-speed fan, rear to front airflow

Input Connectors: XLR/TRS jack

Output Connectors: NL4

Amplifer Protection: S/C, O/C, thermal, infrasonic, ultrasonic, RF. Stable into reactive or mismatched loads.

Load Protection: On/off muting, DC-fault power-supply shutdown.

Width: 19″ (483mm)

Height: 2U

Depth: 379 mm

Weight: 9.5 kg

QSC PLX1804

The PLX1804 - 2 × 900 watts into 4 Ohms - is much the same as the PLX3102, but without filters or 2Ω capability (and we never drive 2Ω loads anyway).

Stereo (both channels driven)

8Ω FTC 20 Hz - 20 kHz 0.05% THD: 550W

8Ω EIA 1 kHz 0.1% THD : 600W

4Ω FTC 20 Hz - 20 kHz 0.05% THD: 800W

4Ω EIA 1 kHz 0.1% THD: 900W

Signal to Noise 20Hz - 20 kHz 0.05% THD: -106 dB

Input Sensitivity @ 8Ω: 1.20 Vrms

Voltage Gain @ 8Ω: 35 dB

Output Circuitry: 2-Step Class H

Power Requirements1: 4.7A

Distortion (SMTPE-IM): <0.02%

Distortion (typical)

1/8 rated power, 20 Hz - 20 kHz: <0.02%

Full rated power, 20 Hz - 20 kHz: <0.02%

Damping Factor: >200

Input impedance: 20kΩ Balanced

Input Clipping: 5.5 Vrms (+15 dBu)

Cooling: Variable-speed fan, rear to front airflow

Input Connectors: XLR/TRS jack

Output Connectors: NL4

Amplifer Protection: S/C, O/C, thermal, infrasonic, ultrasonic, RF. Stable into reactive or mismatched loads.

Load Protection: On/off muting, DC-fault power-supply shutdown.

Width: 19″ (483mm)

Height: 2U

Depth: 279 mm

Weight: 5.9 kg

PDFPLX2 Series Datasheet

QSC GX7

A more recent addition to the QSC stable, the lightweight GX7 (2 × 1,000 watts into 4 Ohms) has one of the highest power‑to‑weight ratios in the industry.

Stereo Mode

8Ω, both channels driven, 1 kHz: 725W

8Ω, single channel driven, 1 kHz: 800W

4Ω both channels driven, 1 kHz: 1,000W

4Ω, single channel driven, 1 kHz: 1,200W

Signal to Noise 20Hz - 20 kHz: -100 dB

Input Sensitivity: 1.2 Vrms

Voltage Gain @ 8Ω: 36.1 dB

Output Circuitry: 2-Step Class H

Power Requirements1: 5.1A

Distortion (typical)

1 kHz, 1 dB below rated power, 8Ω: <0.02%

1 kHz, 1 dB below rated power, 8Ω: <0.05%

Damping Factor: 100

Input impedance: >20kΩ Balanced

Maximum Input Level: 16 Vrms (+24 dBu)

Cooling: Variable-speed fan, rear to front airflow

Input Connectors: XLR/TRS jack/Phono

Output Connectors: NL4, 1/4", binding posts

Amplifer and Load Protection: S/C, O/C, thermal, RF. Load protected against DC faults.

Width: 19″ (483mm)

Height: 2U

Depth: 257 mm

Weight: 9.5 kg

Width: 19″ (483mm)

Height: 2U

Depth: 257 mm

Weight: 7.5 kg

PDFGX Series Datasheet

  1. 1/8 power, pink noise @ 4Ω, 230V.