Audio Technica AT8681 Specifications

AT8681

UniMix® 2-to-1 Microphone Combiner with Balance Control

Specications

Features

• Combines the output from two microphones into one channel

• Continuously variable balance control

• Professional XLR-type input/output connectors

• Can be installed anywhere in-line, either at the mixer input or near the microphone

• 24V to 48V DC phantom power and balanced cables required for operation

• Permits phantom voltage to pass on to the microphone

• Rugged steel housing, compact size

In the inter est of standards devel opment, A.T.U.S.

offers full details on its test me thods to other industr y

Specication s are subject to chang e without notice.

Input/Output connectors

Phantom power

Frequency response

Gain

Input impedance

Output impedance

Maximum input level

Maximum attenuation

Noise (A-weighted)

Weight

Dimensions

Notes

professional s on request.

electronics

XLRF/XLRM-type 24-48V DC, 2-4 mA typical 20-20,000 Hz Unity (0 dB), +0/-1.5 dB 10,000 ohms 250 ohms +15 dBV (1% T.H.D. at 1 kHz) 33 dB at 1 kHz –115 dBV typical 250 g (8.8 oz) typical

130.0 mm (5.12") W x

60.0 mm (2.36") D x

44.0 mm (1.73") H typical UniMix® specications measured at 48V phantom power, 150 ohms input load and 100,000 ohms output load.

Description

The AT8681 UniMix® is part of the UniTools® group of phantompowered in-line microphone accessories. It combines the output from two microphones into one channel. A continuously variable balance control allows the two input sources to be mixed. Applications for the UniMix® include expanding the input capacity of mixers, combining two microphones to send signal down a single cable where it is difcult to run a second cable, and combining microphones on similar instruments to minimize the number of cables on stage. Designed to operate with balanced audio lines, the UniMix® requires 24V to 48V DC phantom power and will pass phantom power to the connected microphones. Featuring a rugged steel housing and XLR-type input/output connectors, the UniMix® can be installed anywhere in-line, either at the mixer input or near the mic.

Architect’s and Engineer’s Specications

The phantom powered in-line microphone combiner shall allow for the outputs of two independent balanced line condenser or dynamic microphones to be combined into a single microphone level input. It shall incorporate a continuously variable mixing (balance) control to vary the mix of the two input sources. It shall have a frequency response of 20 Hz to 20,000 Hz and a unity gain. The combiner shall operate from an external 24V to 48V DC phantom power source and shall be capable of passing phantom power up to the connected microphones. Maximum input level for either input shall be +15 dBV (1% T.H.D. at 1 kHz) and the device shall have a self-noise of -115 dBV. Input impedance shall be 10,000 ohms and the output shall be low impedance balanced (250 ohms). Inputs and outputs shall be via standard 3-pin XLR-type balanced connectors. The unit shall be 130.0 mm (5.12") wide, and

60.0 mm (2.36") deep, and 44.0 mm (1.73") high. Weight shall be 250 grams (8.8 oz). Construction shall be of metal with a black nish. All connections and controls shall be located on the top panel and labeled as to function. Mounting tabs with screw holes shall be provided for attaching the unit to a vertical or horizontal surface.

The Audio-Technica AT8681 is specied.