Ampetronic MLD7

Input

Power

160W 230V AC nominal, 45-65Hz. Power switch and led indicator on front panel

Input 1 & 2
Programmable Microphone / Line

XLR balanced input with programmable 15dB gain boost switchable between microphone and line on the rear panel.
Microphone specification; 200 – 600?, sensitivity -55dBu. Selectable 12V phantom power on microphone only. Line sensitivity; -30dBu. Screwdriver adjustable front panel recessed gain control

Output

Loop Output Drive Voltage

17Vrms (24Vpk)  at maximum output current per channel

Loop Output

6.4Arms (9Apk) continuous 1kHz sine wave peak >9A per channel

Drive Current

• Cont. pink noise 3.2Arms short term peaks >13A per channel
• Front panel recessed controls
• Drive current indicated on two 6-LED displays in 3dB increments

Loop Connectors

Neutrik NL4 Speakons (supplied) for each output

Loop Monitor

Provides access to monitor actual loop current via a 3.5mm stereo headphone connector on front panel. Channel A on left, channel B on right

Status

A pair of isolated relay contacts to indicate system status; fault = open circuit: system O.K. = short circuit

DC Output

Resettable, fuse protected 12V 0.1A.

Audio System

Frequency Response

80Hz to 6.5kHz

Distortion

THD+N

Automatic Gain Control

The AGC is optimised for speech. Dynamic range >36dB

Metal Loss Correction

Corrects system frequency response due to metal structures in a building. Gain constant at 1kHz, adjustable gain slope from 0 to 3dB per octave. This does not compensate for signal loss from metal structures which can be significant.

Phase Shift

User selectable at 0° or 90° between outputs

Additional Functions

Fault Monitoring

Fault indicators on the front panel;
• Clipping – delivering over the rated voltage (per channel)
• Temp – unit is too hot (temporarily mutes output signal)
• Loop error – short circuit / open circuit error (per channel)

Status Contact

A pair of relay contacts are provided for remote fault monitoring

Cooling

Twin variable speed fan cooled. Front inlet, rear exhaust.

Physical

Dimensions

Full witdh 1U 19” rack mount, Width 430mm Depth 330mm Height 44mm

Weight

4.77kg

Environment

IP20, 20 to 90% relative humidity, 0 to 35?c

Mounting

Freestanding, 1U 19″ rack mount (brackets included)