Whirlwind DA-2M Handleiding

Bekijk gratis de handleiding van Whirlwind DA-2M (2 pagina’s), behorend tot de categorie Receiver. Deze gids werd als nuttig beoordeeld door 2 mensen. Heb je een vraag over Whirlwind DA-2M of wil je andere gebruikers van dit product iets vragen? Stel een vraag

OPERATIONS MANUAL

DA-2M

DISTRIBUTION AMPLIFIER

UNPACKING

U.S. Audio has made every effort to ensure that your equipment is received in the same perfect

condition it was when it left the factory. Please inspect your product for any signs of damage during

shipping and report them to your dealer so that a claim can be made to the shipper. We recommend

that you save your packing material for use in the unlikely event that you need to return your

equipment for service.

Thank you for selecting the US Audio DA-2M. a

which accepts either mic or line level inputsThere are eight

electronically balanced XLR line level outputs with individual volume controls and clip indicators. The

audio performance is of the highest quality, making it an excellent value. Great care was taken in the

design so that the DA-2M can fulfill any distribution requirement, from broadcast audio feeds to

loudspeaker audio input distribution.

Inputs feature Neutrik combo 1/4” TRS/XLR connectors, mic/line level input switches, variable input

gain controls, low cut switches for reducing low frequency rumble or wind noise, four segment

headroom indicators and 48 V phantom power that is applied to the XLR in mic mode and turned off

when the input is used in line mode.

The front panel COMBINE switch converts the DA-2M from two 1X4 distribution amps to a 2x8

distribution amp with the two inputs combining to feed all eight outputs. This provides the capability of

having both a line and a mic input simultaneously.

A headphone circuit allows signal monitoring of each input in mono or listening to both input channels

in a stereo mode.

The DA-2M is professional quality two channel

analog audio distribution amplifier.

INTRODUCTION

SPECIFICATIONS

DA2M Product Specifications

Frequency Response Line: +/- .5 dB 20-20 kHz

Mic: +/- .65 dB 20-20 kHz

Total Harmonic Distortion +noise < .003 % at 1 kHz

Equivalent Input Noise 121 dB

Total Gain 74.7 dBV

Gain of Microphone/Line Switch 29 dBV

Gain of Input Trim 28.7 dBV

Gain of Channel Volume 17.0 dBV

Range of level pot Trim –40.8 to +28.7 dBV

Channel: -61 to +17 dBV

Common Mode Rejection of Input Line: -80.9 dB at 60 Hz, unity gain

Mic: -68 dB at 60 Hz, 40 dBV of gain

Maximum Input level Line: +22 dBV

Mic: -7 dBV

Input Impedance Line: 40 K Ohms

Mic: 1.5 K Ohms

Maximum output level +27.6 dBV

Output drive power +22 dBV into 600 Ohms

Output Impedance 100 Ohms

Minimum impedance of headphones 8 Ohms

Noise at unity gain -92.4 dBV Line mode

Noise at 40 dBV of gain Mic mode -80.4 dBV

Working signal to noise ratio (at 20 dBV

headroom)

Line: 114.6 dB at unity

Mic: 87.4 dB at 40 dBV of gain

Isolation between input channels Line at unity:

112 dBV at 1 kHz

98 dBV at 20 kHz

Mic at 40 dBV of gain:

90 dBV at 1 kHz

75 dBV at 20 kHz

Clip LED threshold

LED Headroom

Red 1 dBV

Yellow 12 dBV

Green 1 24 dBV

Green 2 36 dBV

Phantom Power 48 Volts DC

High pass filter 3 dB at 120 Hz

24 dB per octave slope

Output isolation between channels 102 dBV at 1 kHz

95 dBV at 20 kHz

Max Output of Headphones +12 dBm at 47 Ohms

+7 dBm at 23.5 Ohms

Power consumption

Condition Amps AC

Idle .09

Full clean .195

Max. .30

Size 1 RU

Internal Mains fuse .5 amp slow blow type 3ag

AC dropout voltage 105 VAC 60 Hz

Power requirements 120 VAC 60 Hz

Internal jumpers for 230 VAC 50 operation 40 Watts

Max.

Product specificaties