The FDB-404 has four separate audio channels with offer the following facilities independent of each other. It serves as an optimal connection of a musical instrument with high impedance unbalanced output to a low impedance balanced input of a mixer. By means of the balanced connections to the mixer, interferences can also be avoided in case of long connecting cables. In case of problems with hum loops, the ground connections between instrument and mixer can be separated by means of the groundlift switch. Then the devices are d.c. separated.
High signal levels can be reduced by means of the reductor and can be adapted to the mixer input. There by, the FDB box can also be connected directly to the speaker output of an instrument amplifier. Consequently the influence of the sound at the mixer input will be maintained by the amplifiers (e.g. guitar or tube amplifier).
Specifications:
Frequency Resp. - - - - high to low impedance : 15 - 30,000 Hz
low to high impedance : 30 - 20,000 Hz
Attenuator - - - - - - 0, -20, -40 dB - PRINCIPLE DIAGRAM FOR ONE CHANNEL -
Inputs :
1/4" jack - - - - - - - - 50㏀, unbalanced
max. Input voltage : 32v (corresponds to 125W at 8Ω or 250W at 4Ω)
Outputs :
XLR - - - - - - - - - - 600Ω, balanced
Transmission ratio - - - - 10 : 1
Admissible ambient :
Temperature - - - - - - 0~40˚c
Dimensions (WxHxD) - - - 483 x 44.5 x 95 mm
Weight - - - - - - - - 1.25kg
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