Audio Technica UniLim AT8686 Product information

Brand: Audio Technica

Model: UniLim AT8686

Category: Microphone accessories

Type: Product information

This manual is also suitable for

UniTools

are phantom-powered in-line

microphone accessories that can be used to

combine a channel, gate an input, roll off the

response, add a switch, notch out a frequency

or pad down a signal. Compact, economical

and easy to use, they provide outstanding,

reliable performance that would otherwise

require a fully-equipped accessory rack.

Available in six function-specific models,

UniTools are intended primarily for use with

UniPoint

and similar condenser micro-

phones. All have professional XLR-type

input/output connectors, and require

balanced cables and 24-48V DC phantom

power for operation. (“In” and “Out” mark-

ings refer to the

mic audio

.) All units permit

phantom voltage to pass on to the micro-

phone. Featuring rugged steel housings,

UniTools can be installed anywhere in-line,

either at the mixer input or near the mic.

AT8681 UniMix

AT8684 UniMute

AT8682 UniGate

AT8685 UniTrap

AT8683 UniSteep

AT8686 UniLim

PHANTOM-POWERED IN-LINE

MICROPHONE ACCESSORIES

UniTools

GENERAL SPECIFICATIONS

†

INPUT/OUTPUT CONNECTORS XLRF/XLRM-type

PHANTOM POWER 24-48V DC, 2-4 mA typical

FREQUENCY RESPONSE 20-20,000 Hz

GAIN Unity (0 dB), +0/–1.5 dB

NOISE (A-WEIGHTED) –115 dBV typical

WEIGHT 8.8 oz (250 grams) typical

DIMENSIONS 5.12" (130.0 mm) W x 2.36" (60.0 mm) D

x 1.73" (44.0 mm) H typical

†

Measured at 48V phantom power, 150 ohms input load

and 100,000 ohms output load. Specifications apply to

all models except as noted below.

AT8681 UniMix

2-to-1 Mic Combiner with Balance Control

AT8682 UniGate

Voice-operated Switch with Adjustable Threshold

AT8683 UniSteep

80 Hz Mic Hi-pass Filter

AT8681 SPECIFICATIONS

INPUT IMPEDANCE 10,000 ohms

OUTPUT IMPEDANCE 250 ohms

MAXIMUM INPUT LEVEL +15 dBV (1% T.H.D. at 1 kHz)

MAXIMUM ATTENUATION 33 dB at 1 kHz

Description: The AT8681 combines the output from

two microphones into one channel. The balance

control attenuates each microphone by 6 dB (typical)

at midpoint.

Operation: To connect the UniMix, plug two micro-

phones into the XLRF-type input connectors (marked

“In”). Then run a cable from the unit’s XLRM-type

output connector (marked “Out”) to the mixer input.

Adjust the Balance control until the output of the

UniMix is equal for both microphones.

AT8682 SPECIFICATIONS

INPUT IMPEDANCE 2,500 ohms

OUTPUT IMPEDANCE 460 ohms

MAXIMUM INPUT LEVEL +6 dBV (1% T.H.D. at 1 kHz)

FREQUENCY RESPONSE 25-20,000 Hz

GATE ATTENUATION 10 dB typical

MINIMUM THRESHOLD –85 dBV

Description: The AT8683 provides a steep low-

frequency attenuation to improve the quality of

sound pickup under difficult conditions without

affecting voice quality. Useful for minimizing back-

ground ambience, air conditioning rumble, mechani-

cal noise and other undesired low-frequency sounds.

Operation: To connect the UniSteep, plug the micro-

phone cable into the XLRF-type input connector

(marked “In”). Then run a cable from the unit’s

XLRM-type output connector (marked “Out”) to the

mixer input.

AT8683 SPECIFICATIONS

INPUT IMPEDANCE 2,100 ohms

OUTPUT IMPEDANCE 150 ohms

MAXIMUM INPUT LEVEL +3 dBV (1% T.H.D. at 1 kHz)

FREQUENCY RESPONSE 80-20,000 Hz

CORNER FREQUENCY 80 Hz

LOW-FREQUENCY ROLL-OFF 18 dB/octave

Description: The AT8682 automatically attenuates a

channel by 10 dB (typical) when microphone is not in

use. LED indicates when gate is open.

Operation: To connect the UniGate, plug the micro-

phone cable into the XLRF-type input connector

(marked “In”). Then run a cable from the unit’s

XLRM-type output connector (marked “Out”) to the

mixer input.

The Threshold control sets the reference level that

must be exceeded for a microphone to be consid-

ered “in use.” Adjust to keep background noise level

from triggering the microphone.

Audio-Technica U.S., Inc., 1221 Commerce Drive, Stow, Ohio 44224

Audio-Technica Limited, Old Lane, Leeds LS11 8AG England

One-Year Limited Warranty

Audio-Technica microphones and accessories purchased in the U.S.A. are warranted for one year from date of purchase by

Audio-Technica U.S., Inc. (A.T.U.S.) to be free of defects in materials and workmanship. In event of such defect, product will

be repaired promptly without charge or, at our option, replaced with a new product of equal or superior value if delivered to

A.T.U.S. or an Authorized Service Center, prepaid, together with the sales slip or other proof of purchase date.

Prior

approval from A.T.U.S. is required for return.

This warranty excludes defects due to normal wear, abuse, shipping dam-

age, or failure to use product in accordance with instructions. This warranty is void in the event of unauthorized repair or

modification.

For return approval and shipping information,

contact the Service Department, Audio-Technica U.S., Inc.,

1221 Commerce Drive, Stow, Ohio 44224.

Except to the extent precluded by applicable state law,

A.T.U.S. will have no liability for any consequential, incidental,

or special damages; any warranty of merchantability or fitness for particular purpose expires when this warranty

expires.

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

Outside the U.S.A., please contact your local dealer for warranty details.

UniTools

AT8684 UniMute

Mic Attenuator with User-definable Switch Function

AT8684 SPECIFICATIONS

INPUT IMPEDANCE 5,300 ohms

OUTPUT IMPEDANCE 500 ohms

MAXIMUM INPUT LEVEL +17 dBV (1% T.H.D. at 1 kHz)

MUTING ATTENUATION 57 dB at 1 kHz

Description: The AT8684 is a versatile attenuator

which permits easy in-line switch installation and

flexible application. Type of external single-pole

switch the user supplies determines muting function;

closed contact causes muting. Use for on/off, push-

to-talk, push-to-mute, etc. (Additional, isolated poles

on the switch may be used to control

logic-level DC

circuits.)

Operation: To connect the UniMute, plug the micro-

phone cable into the XLRF-type input connector

(marked “In”). Then run a cable from the unit’s

XLRM-type output connector (marked “Out”) to the

mixer input.

The UniMute may be installed anywhere in-line.

Once mounted, connect an external single-pole

switch to the push terminals marked “Switch” and

check for proper operation.

AT8685 UniTrap

Constant-Q Mic Notch Filter with Adjustable Frequency

AT8685 SPECIFICATIONS

INPUT IMPEDANCE 2,500 ohms

OUTPUT IMPEDANCE 300 ohms

MAXIMUM INPUT LEVEL –7 dBV (1% T.H.D. at 1 kHz)

NOTCH FREQUENCY RANGE LO 100-1,000 Hz

HI 1,000-10,000 Hz

NOTCH REJECTION 30 dB typical

Description: The AT8685 is a tunable notch filter

capable of attenuating a narrow frequency band that

is susceptible to feedback. A notch 30 dB deep tunes

in two ranges for more precise control.

Operation: To connect the UniTrap, plug the micro-

phone cable into the XLRF-type input connector

(marked “In”). Then run a cable from the unit’s

XLRM-type output connector (marked “Out”) to the

mixer input.

While the system is feeding back, adjust the Range

switch and Frequency control to remove the feedback.

AT8686 UniLim

Mic Limiter with Adjustable Threshold

AT8686 SPECIFICATIONS

INPUT IMPEDANCE 6,000 ohms

OUTPUT IMPEDANCE 80 ohms

MAXIMUM INPUT LEVEL +20 dBV (1% T.H.D. at 1 kHz)

LIMITING LEVEL RANGE –55 dBV to –20 dBV

Description: The AT8686 keeps the output of a

microphone from exceeding a desired level. This

function serves to set maximum level in a mic

channel and prevent the overloading of mixer input

stages.

Operation: To connect the UniLim, plug the

microphone cable into the XLRF-type input connector

(marked “In”). Then run a cable from the unit’s

XLRM-type output connector (marked “Out”) to the

mixer input.

To adjust the threshold, begin by turning the

Threshold control to its highest level (fully clockwise).

Next, speak, sing or play an instrument loudly into

the microphone to create a strong signal that

causes excessive level or overloads the mixer input.

Gradually turn the threshold down on the UniLim

until the overload ceases, or until the desired maxi-

mum level is reached.

Audio Technica UniLim AT8686 Product information

Brand: Audio Technica

Model: UniLim AT8686

Category: Microphone accessories

Type: Product information

This manual is also suitable for

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