Feeding of a symmetrical signal into a mixing console:
(Checking of a complete PA or monitor system)
Set selector switch of the XLR output jack to position symmetrical. Connect the Speaker Checker to a
symmetrical microphone cable with an input for a mixing console. Switch on Speaker Checker and
set the volume controller approx. in position 11 o’clock. Adjust the optimum working level at the
mixing console by means of the gain controller and disable the sound control, if applicable. Now you
can check a complete frequency band from 90 Hz to 9 kHz by means of the frequency control and
the frequency shiftover (for example first the left side, then the right side of the PA, the monitors
,etc.).
Battery test:
When the brightness of the green switch-on control LED decreases significantly, the battery or the
accumulator has to be exchanged as soon as possible (the device does not work optimally any more,
and the power amplifier distorts even with low output level).
Inserting the battery or the rechargeable battery:
Switch off the device, open battery cover on top of the housing, insert battery or NiMH–battery in
correct position of pole into the battery receptacle according to the drawing, put on cover and close it.
Inserting the battery with the pole in incorrect direction will not cause any damage to the device (the
device simply does not function).
Either use a 9V block alkaline battery or a nickel metal hydride (NiMH) brand battery with 7 cells (8.4
V) and a capacity of at least 170mAh. We advise not to use cheap 9V zinc carbon batteries since
their capacity is too low and they can leak.
We therefore recommend to use such rechargeable batteries due to economic reasons and the
protection of the environment. FISCHER AMPS offer special 19“ chargers for the use on stage with
charging times of 2 hours as well as high-quality batteries.
TECHNICAL DATA:
Dimensions L x W x H :
127 x 82 x 30 mm
Weight:
approx.
250g
Output jacks:
XLR male 3-pole, Speakon 4-pole
Output signal:
Sine
Adjustable frequency range: 90Hz – 9 kHz +/- 5%
Min. connection impedance
at the output:
4 ohm
Max. output power:
1 W at 4/8 ohm
Max. operating current
approx.. 390 mA at 4 ohm/1W, approx. 280mA at 8 Ohm/1W
Steady current switched on:
approx. 30 mA
Power supply:
9V block alkaline battery or 8.4V NiMH battery
FISCHER AMPS
Hans-Ulrich-Breymann-Str. 3, D-74706 Osterburken / Germany
Phone +49 (0)6291–648 79-0, Fax 648 79-19
E-MAIL:
, Internet:
www.fischer-amps.de
