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Summary of Contents for Linnenberg ALLEGRO
- Page 1 Owner’s Manual ALLEGRO...
- Page 3 Introduction Thank you for purchasing the ALLEGRO ! ALLEGRO delivers the superiority and authority of a linear class AB amplifier - even in demanding applications. It features high current capability and operating speed not to be found in IC- amplifiers aka “gain-clone” or any class D design.
- Page 4 Controls - front Blue power on LED and status indicator Front side power ( on / off ) switch (Figure 1)
- Page 5 Connections - rear XLR <-> female (cinch) input input input select switch IEC appliance 63A binding posts inlet and hard for speaker wired mains connection black = switch minus, red = plus (Figure 2)
- Page 6 Place the unit on a solid, flat level surface such as a shelf or directly on the floor. Virtually, there are no limitations on where to position your ALLEGRO. We suggest positioning the unit so that the connecting cables remain short. Before connecting the ALLEGRO to your...
- Page 7 (0) = OFF. Connect the power cord to the IEC mains input and plug it into your wall outlet or high quality power strip. ALLEGRO offers two inputs; one balanced and one in single ended configuration. The toggle switch is used to select the chosen input. When...
- Page 8 There is no need to operate the mains ON / OFF switch on the back side since the standby power consumption is less than 0,5W. As it is common practice, disconnect ALLEGRO from the mains during a thunderstorm or when going on vacation.
- Page 9 Here, the blue LED blinks at a 0.5s (quick) rate. Unallowable DC voltages can origin from the source component or the ALLEGRO amplifier itself. To isolate the source of the problem, disconnect the audio input cable from the ALLEGRO amplifier before proceeding any further.
- Page 10 Mains voltage selection / fuse replacement The following work should only be carried out by a qualified technician in accordance to highest electrical safety standards. Risk of electric shock. Replacing the fuse The fuse must be replaced by a 6,3AT type (5x20mm).
- Page 11 220 – 230V mains voltage: use 1 x fuse 6,3AT in place F1 110 – 115V mains voltage: use 2 x fuse 6,3AT in place F2 and F3 (Figure 3)
- Page 12 Specifications Input sensitivity : 1,5 V Input 22k Ω (single ended RCA) impedance: 44k Ω (balanced XLR) Gain : 22,8 dB Power output : 55W/8Ω 90W/4Ω 105W/2Ω Peak output 68 V voltage : Peak output +/- 20A continuous 1 : 10 current : cycle Frequency...
- Page 13 THD @ -1dB full power output @ 8Ω vs. frequency (Figure 4) THD @ 1kHz @ 8Ω vs. power output (Figure 5)
- Page 14 Square wave @ +/- 10V @ 8Ω @ 20kHz (Figure 6)
- Page 16 The serial number is an essential part of our conformity declaration and therefore of the approval for operation of the ALLEGRO. The serial numbers on the unit and in manual, must not be removed or modified, and must correspond.
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Page 17: Warranty Certificate
LINNENBERG ELEKTRONIK. The product must be packed in its original box and returned to LINNENBERG ELEKTRONIK by the customer at his or her sole expense. LINNENBERG ELEKTRONIK will pay return freight of its choice. A returned product must be accompanied by a... - Page 18 LINNENBERG ELEKTRONIK reserves the right to modify the design of any product without obligation purchasers previously manufactured products and to change the prices or specifications of any product without notice or obligation to any person. In the unlikely event the above product fails to meet the above specifications and the above conditions have been met, the purchaser’s sole...
- Page 20 © Linnenberg Elektronik 2016...