Summary of S- 75
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S- 75 • s-100 • s-150
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Page 2 device features fanless cooling, ideally suited for studios x space saving design with only one rack space x works with a 2 Ω load x efficient protective circuitry x balanced xlr and jackplug inputs x toggle switch for input sensitivity x parallel and bridged operations are possible x speaker...
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Page 3 u ser m anual these instructions do not provide all information regarding the device's design, production or possible modifications. It also does not cover every possible situation that can occur during installation, opera- tion or maintenance. If you should require special assistance that is...
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Page 4 2. Notes on safety for your own safety you should read through this chapter at first completely! Risk of electrical shocks. Only connect the device to a properly wired and earthed mains power socket with mains voltage • of 230 v ~ /50 hz. Do not operate the device if the power cord or the mai...
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Page 5 3. Becoming acquainted with the operational components 3.1 . . . Front q clip indicator for maximum level in channel 1 this indicator lights up when the output power of channel 1 has reached its maximum value. If the indicator lights up continually the power in this channel must be reduced. F...
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Page 6 r ch-2 input level controller for channel 2 with this controller you decrease the input level in channel 2 to the respective db value indicated on the scale. At the right end stop the attenuation is "0" and the full signal is amplified with maximum power. T pro indicator for activated circuit...
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Page 7 a connection for the power cord/supply voltage (ac230v~/50hz) with fuse holder s ch-2 speakon speaker output channel 2, for the connection of speakon cables (1+ 2+ 1— 2—) d ch-1 speakon speaker output channel 1, for the connection of speakon cables (1+ 2+ 1— 2—) f ch-2 speaker terminals chann...
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Page 8 5. Operational safety precautions firstly make sure that the details for the supply voltage on the rear panel of the device correspond to the available supply voltage at the operation location. If in doubt ask an electrician. Damages sustained through operation of the device with incorrect su...
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Page 9 mono (balanced): connecting the speaker you can connect the speakers either with cable shoes or also with bare wires to the cable terminals on the rear panel of the device or you can use the speakon sockets (1+ 2+ 1— 2—). The cable profile should be proportioned to the amplifier power and the...
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Page 10 parallel operation the parallel mode works mono. It serves thereto, to be able to connect lower impedances (down to 2 Ω) as in normal operation without thereby overloading the power amplifier. For this you move the mode toggle switch j to the "parallel" position. In parallel operation you ma...
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Page 11 signal ground lift switch in a system that, with reference to safety and low auxiliary noise, is optimally configured the power amplifier should be earthed at the input via the signal cable. If possible the signal source should have at its disposal the same earth potential as the power ampli...
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12. Technical data model s-75 s-100 s-150 output power stereo 8 Ω 4 Ω 2 Ω bridged 8 Ω 4 Ω parallel 2 Ω 1 Ω 2 x 45 w 2 x 75 w 2 x 90 w 150 w 220 w 160 w 2 x 65 w 2 x 100 w 200 w 200 w 2 x 85 w 2 x 150 w 2 x 200 w 250 w 400 w 320 w frequency response 10 hz - 50 khz, -1,5 db input sensitivity 0,77 v / ...