Oxmoor MDA-16 User Manual

MDA-26™/MDA-16

™

DISTRIBUTION AMPLIFIERS

The Oxmoor MDA-16 and MDA-26
are high-performance audio buffer/
distribution amplifiers for profes­sional applications. The MDA-16
enables a single input to be distrib­uted among six electrically-isolated
output channels. The MDA-26 adds
flexibility with two inputs accept­ing either stereo or two mono
sources. Using internal jumpers,
each of the MDA-26 outputs can be
assigned to either or both inputs.

The MDA-26 permits a wide vari­ety of signal routing and level
matching combinations. Example:
two one-by-three Distribution Am­plifiers or stereo in with stereo out
and four mono sum outs.

Each model allows front-panel in-

put gain trim adjustment of ±15 dB

to compensate for varying input
signal levels. Outputs also feature
independently adjustable gain over

a ±15 dB range and can deliver a

maximum level of +24 dBm, 20Hz
to 20kHz, with greater than 80dB of
isolation between channels.

Inputs and outputs are electroni-

21

3

1. Input gain trim pots

(± 15 dB)

2. Output source selectors

3. Output gain trim pots

(± 15 dB)

4. Electronically balanced/
unbalanced output
selector

MDA-16 Distribution Amplifier

21

3

21

3

1. Input gain trim pots

(± 15 dB)

2. Output source
selectors

3. Output gain trim

pots (± 15 dB)

4. Electronically
balanced/unbalanced
output selector

MDA-26 Distribution Amplifier

cally balanced and feature standard
3-pin XLR-type connectors. The in­put circuits accommodate up to +24
dBu signal levels, and incorporate
RF suppression to preserve signal
integrity in the presence of radio­frequency interference. Each out-

1

2

MASTER

OUTPUT A

OUTPUT B

OUTPUT C

OUTPUT D

OUTPUT E

OUTPUT F

3

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

INPUT 1

INPUT 2

OFF

1

ON

2

1

2

1

2

1

2

1

2

1

2

OUTPUT A

OUTPUT B

OUTPUT C

OUTPUT D

OUTPUT E

OUTPUT F

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

1

2

3

put driver has an internal jumper
that allows configuring for balanced
or unbalanced operation. Optional
output transformers are available
by ordering either the MDA-16T or
MDA-26T.

Both models are capable of match­ing disparate signal levels, allow­ing hi-fi and professional line-level
signals to be freely inter-mixed with­out additional interfaces. Their im­pressive audio specifications, and
compact, rugged construction make
them ideally suited to recording and
broadcast applications.

Housed in 1U EIA rack-mountable
enclosures and UL Listed, the
MDA-16 and MDA-26 are the reli­able and dependable solutions to
whatever audio distribution prob­lems you may have.

For more information on any
Oxmoor product, please contact the
Oxmoor Sales Department. Or
download complete product bro­chures and manuals at our website:
www.oxmoor.com.

Oxmoor Corporation, LLC, 309 Cahaba Valley Parkway, Birmingham, AL 35124 USA Toll Free: 1-800-262-6898

Phone: [phone] Fax: [phone] E-mail: [e-mail] Internet: www.oxmoor.com

MDA-26™/MDA-16™ SPECIFICATIONS

FREQUENCY RESPONSEFREQUENCY RESPONSE

FREQUENCY RESPONSE 20 Hz to 20 kHz ............................................ +0, – 0.3 dB

FREQUENCY RESPONSEFREQUENCY RESPONSE

HUM AND NOISEHUM AND NOISE

HUM AND NOISE Ref. +4 dBm Output @ Unity Gain .................. - 94 dB (20 Hz to 20 kHz BW, Unweighted)

HUM AND NOISEHUM AND NOISE

DISTORTIONDISTORTION

DISTORTION Ref. +4 dBm Output @ Unity Gain

DISTORTIONDISTORTION

CROSSTALKCROSSTALK

CROSSTALK Channel to Channel (MDA-26) - 80 dB (20 Hz to 20 kHz, Input Terminated w/600

CROSSTALKCROSSTALK

AUDIO INPUTAUDIO INPUT

AUDIO INPUT Type .............................................................. Electronically Balanced (RF Suppressed)

AUDIO INPUTAUDIO INPUT

- 3 dB Points, Ref.1 kHz ................................. 4 Hz to 60 kHz (+4 dBm Output)

THD + NOISE ................................................ 0.0016% (20 Hz to 20 kHz BW)

SMPTE IMD .................................................. 0.0021% (60 Hz + 7 kHz, Mixed 4:1)

Transient Intermodulation .............................. 0.0031% (3.15kHz SQ + 15kHz Probe, 30kHz BW)

Ohms, Adjacent Channel Driven to +4 dBm)

Connector ...................................................... Female XLR

Pin Out .......................................................... Pin 1 Shield (Chassis), Pin 2 +, Pin 3 –

Input Impedance ............................................ 80 k Ohms

Nominal Input Level ....................................... +4 dBu

Maximum Input Level ..................................... +24 dBu

Trim Pot Gain Range ...................................... ±15 dB (Ref. 0 dBu Output)

AUDIO OUTPUTAUDIO OUTPUT

AUDIO OUTPUT Type .............................................................. Electronically Balanced

AUDIO OUTPUTAUDIO OUTPUT

Connector ...................................................... Male XLR

Pin Out .......................................................... Pin 1 Shield (Chassis), Pin 2 +, Pin 3 –

Source Impedance ......................................... 150 Ohms (75 Ohms/Side)

Recommended Load Impedance .................... 600 Ohms or Greater

Nominal Output Level .................................... +4 dBu (+4 dBu Input)

Maximum Output Level (Ref. 1 kHz @ Rated THD)

Terminated w/600 Ohms ........................... +24 dBm (All Outputs Driven Simultaneously)

Unterminated ............................................. +26 dBu

Trim Pot Gain Range ...................................... ±15 dB (Ref. 0 dBu Output)

SAFETY LISTINGSAFETY LISTING

SAFETY LISTING UL ................................................................. 1419

SAFETY LISTINGSAFETY LISTING

MAINS POWERMAINS POWER

MAINS POWER Power Requirements ...................................... 100 to 125 VAC or 200 to 230 VAC

MAINS POWERMAINS POWER

MECHANICALMECHANICAL

MECHANICAL Overall Dimensions ........................................ 44H x 482W x 183D mm

MECHANICALMECHANICAL

Finish ............................................................ Textured Black Paint

Weight ........................................................... Shipping: 3.8 Kg (8.5 lb.) Net: 3.1 Kg (6.9 lb.)

(Unbalancing Jumpers Provided)

50/60 Hz; 13 Watts Maximum

(1.72" H x 19" W x 7.18" D)

7/23/01 Rev. 2.2

Specifications subject to change without notice. *SMPTE Method; 60 Hz +7 kHz mixed 4:1.

Oxmoor Corporation, LLC, 309 Cahaba Valley Parkway, Birmingham, AL 35124 USA Toll Free: 1-800-262-6898

Phone: [phone] Fax: [phone] E-mail: [e-mail] Internet: www.oxmoor.com