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PRE ST 1

4-Channel Stereo Mixer Preamplifier
Item No.: LDPREST1
Line input for emergency signal with priority contact closure
2 Mic/line inputs with microphone/line switching and switchable 24-V phantom power
Priority contact closure and switchable chime function for mic/line channels
3 stereo music sources: 2 line inputs with RCA sockets plus Bluetooth 4.0 interface
Gain control and clip LED indicator in the emergency and mic/line inputs
Balanced stereo line output with terminal block connector, and a mono/stereo switch
Separate treble and bass tone controls on the rear panel
4 priority settings for versatile integration options
Switchable auto standby mode to save energy
User-friendly front panel control interface, and clear rear panel layout
 

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Line input for emergency signal with priority contact closure
2 Mic/line inputs with microphone/line switching and switchable 24-V phantom power
Priority contact closure and switchable chime function for mic/line channels
3 stereo music sources: 2 line inputs with RCA sockets plus Bluetooth 4.0 interface
Gain control and clip LED indicator in the emergency and mic/line inputs
Balanced stereo line output with terminal block connector, and a mono/stereo switch
Separate treble and bass tone controls on the rear panel
4 priority settings for versatile integration options
Switchable auto standby mode to save energy
User-friendly front panel control interface, and clear rear panel layout
Description

Permanent installations require solutions which offer a visually discrete design that blends into the background while still being flexible and versatile in their functions. You need to be able to connect different audio sources and manage them, to mute non-priority signals during announcements or emergency calls.

The PRE ST 1 is a 4-channel multi-functional stereo mixer preamplifier that allows users to mix 2 microphone/line sources together with an emergency line input and one of the 3 music sources available, including a Bluetooth receiver. These versatile connection options together with a four-level priority system, that combines contact closure inputs and VOX audio detection circuits, guarantees a seamless integration in almost any commercial audio application.

PRE ST 1 is equipped with two priority contacts: one for the emergency input, which mutes all the other signal sources, and one for the microphone inputs, which mutes the music signal sources. The stereo balanced line output includes a mono/stereo switch and separate tone controls for bass and treble. An automatic standby mode can also be activated in order to further reduce energy consumption when the device is not used.

The intuitive design of its control panel ensures an easy operation, with input and master volume controls, clear signal level and priority indications, and a practical music source selection and Bluetooth pairing activation via capacitive buttons. On the other hand, the clarity of the rear panel and the compact 9.5" format ensures that the preamplifier can be easily installed.

Specifications
General
Product type Installation mixer preamplifier
Emergency input 1 balanced line input
Mic/ line inputs 2
Music sources 2 unbalanced stereo line inputs, Bluetooth 4.0
Line Output Connectors 1 (Stereo/Mono switchable)
Cooling Convection
Priority levels 4
Emergency Input
Nominal input sensitivity -3 dBu (Sine 1 kHz, Gain max)
Nominal input clipping 20 dBu (Sine 1kHz)
Connector 5-pin Terminal Block, pitch 5.08mm
Mic/Line inputs 1-2
Nominal input sensitivity Mic -26 dBu (Sine 1 kHz, Gain max)
Nominal input sensitivity line -2 dBu (Sine 1 kHz, Gain max)
Nominal input clipping Mic -5 dBu (Sine 1kHz)
Nominal input clipping line +19dBu (Sine 1kHz)
Phantom power + 24V, 10mA switchable
Priority Contact closure +5VDC normally open for dry contact
Connector Mic/Line1 1 XLR/6.3mm Jack combo connector, 5-pin Terminal Block, pitch 5.08mm
Connector Mic/Line 2 1 dual RCA Mono Summed, 3-pin Terminal Block, pitch 5.08mm
Music inputs - CD/AUX
Nominal input clipping CD/AUX 8 dBV (Sine 1kHz)
Connector CD/AUX 2 x dual RCA Mono Summed
Line Output
Outputs Mono switchable, Stereo Line Level
Max. output level 16 dBu
Tone controlBass +/-10 dB (100 Hz)
Tone control Treble +/-10 dB (10 kHz)
Power supply
Type SMPS
Operating voltage 100 V AC - 240 V AC, 50 - 60 Hz
Power consumption (max.) 6 W
Idle power consumption 5 W
Power Consumption @ Standby < 1 W
Operating temperature ( non-condensing ) 0°C - 40°C; < 85% humidity, non condensing
General data
Time to Auto-standby 20 Min.
Dimensions (W x H x D) ( height with rubber feet ) 210 x 95 x 266.76 mm
Optional accessories Rack mounting hardware
Weight 2,08 kg
Downloads & links
Name
Category
Type
File size
LD Systems Catalogue Catalog pdf 38 MB
Technical drawing dwg Data Sheet dwg 1 MB
Technical drawing pdf Data Sheet pdf 252 KB
Product images Image files zip -
Tender documents Tender Specifications zip 162 KB
LD Systems Catalogue

Category: Catalog

Type: pdf

File size: 38 MB

Technical drawing dwg

Category: Data Sheet

Type: dwg

File size: 1 MB

Technical drawing pdf

Category: Data Sheet

Type: pdf

File size: 252 KB

Product images

Category: Image files

Type: zip

File size: -

Tender documents

Category: Tender Specifications

Type: zip

File size: 162 KB

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Adam Hall North America Inc.
sales.us@adamhall.com
+1 973-335-7888