PREAMP-1 UP Flush-Mount Pre-Amplifier

The PREAMP-1 UP Flush-Mount Pre-Amplifier is designed for transmitting announcements and music conveniently to different rooms Individual volume control and switching-off possible in each room Compatible with many ranges of standard switches Suitable for standard 63mm flush-mount wall sockets Flush-mount preamplifier

For the connection of up to 20 power amplifiers AMP-1UP Fitted metal base plate Connections and level controls for line input and microphone input Description of features:

A microphone with a 6.3mm plug and a sound source, e.g. CD player, tuner, etc. with RCA plugs, can be connected to the preamplifier PREAMP-1UP and adjusted separately via the two front controls. The level control of the microphone also serves as the ON/OFF switch of the preamplifier. If several sound sources are to be reproduced optionally in every room, the HiFi system has to be connected to the "line" input of the PREAMP-1UP via the "tape out" output of the HiFi amplifier. Thus, the reproduced sound source in the adjoining rooms is always identical to the one selected at the HiFi system in the living room. Therefore, the amplifier should always be built-in near the HiFi system. At greater distances between the sound source or HiFi system and the preamplifer, it is recommended to use a screened cable for the audio signal. It has to be supplied with 24V DC current . The preamplifier PREAMP-1UP must be connected to the power amplifier AMP-1UP. The cabling can be realised via the main lead, ie. the signals can be fed through from one unit to the other. A max. of 20 power amplifiers AMP-1UP can be connected to one preamplifier PREAMP-1UP. Please refer to the basic wiring diagram for the recommendation of cabling. The speakers must be connected to the power amplifier AMP-1UP. Two 8Ω or one 4Ω speaker can be operated with one power amplifier. If several speakers are to be connected to one power amplifier AMP-1UP, the signals have to be passed on at each speaker, because the max. cross section for connection of the terminals of the AMP-1UP is 1.0mm2. A junction box can also be placed. The power amplifiers AMP-1UP must also be supplied with 24V DC current . The cabling must be arranged radially or a junction box must be placed.

The max cross section for connection of the terminals of the AMP-1UP is 1.5mm. Thus, it is only possible to connect one cable at a time.

Technical specification:

• Frequency range 20-20,000Hz (line)
• 40-15,000Hz (mic)
• Input 400mV (line)
• 4mV (mic)
• Output 5V/50Ω max.
• Control voltage 0-10V DC current
• Power supply 22-26V DC current /0.025A
• Connection 7-pole terminal strip,
• removable
• 1 x RCA L/R (line)
• 1 x 6.3mm jack (mic)