Whirlwind LD410 user manual

Summary of the content on the page No. 1

LD410
professional interface
INTRODUCTION UNPACKING
The Whirlwind LD410 Line Driver is the ultimate tool for matching US Audio has made every effort to ensure that your equipment
audio equipment signal levels. The LD410 is both a professional quality, is received in the same perfect condition it was in when it left the
sonically superior -10 to +4dB to -10dB level converter and a flexible factory. Please inspect your product for signs of any damage during
multichannel distribution amplifier w

Summary of the content on the page No. 2

DESCRIPTION OF BLOCK DIAGRAM The LD410 is a versatile, multipurpose line driver and multi-channel distribution The standard factory configuration is that of a dual stereo -10dB to +4dB amplifier. There are eight input channels and eight output channels. Internal signal routing and +4dB to -10dB level converter. Channels 1, 2, 5 and 6 convert +4dB balanced jumpers configure the connections between the inputs and outputs. There are three types of signals to -10dB unbalanced. Channels 3, 4, 7 a

Summary of the content on the page No. 3

LD410 BLOCK DIAGRAM

Summary of the content on the page No. 4

7. RCA output jacks on outputs 1, 2, 5 and 6 deliver unbalanced signals from the line drivers and 1. Input Pad switch applies a 14dB pad across the input jack when depressed. are controlled by the output gain pots. The RCA outputs may be used simultaneously with the balanced outputs (see 10) because they have separate driver circuits. 2. Gain control varies the signal level at the output jacks. The gain markings around the knob indicate the amount of gain or attenuation being applied to the s

Summary of the content on the page No. 5

SPECIFICATIONS -.6 dBv 20-20K Hz. Frequency Response -.1 dBv 50-10 K Hz <.004 % 20-20 K Hz. @ Unity gain Total Harmonic Distortion +noise +38 dBv Total Gain -38 to + 38 dBv Range of level pot < -72 dBv 20-20 K Hz. Common Mode Rejection of Input +22 dBv Maximum Input level 40 K ohm balanced Input Impedance +22 dBv Maximum output level 200 ohms balanced Output Impedance -85 dBv Noise at unity gain -80 dBv Noise at 14 dBv of gain > 85 dBv Working signal to noise ratio (at 2