This is a well constructed 12 RU box that provides Balanced or Unbalanced operation, Input AND Output Level controls, and Studio Quality sound.
It can be used as a Stereo DA (Dual 1x3) , Mono 1x6 DA using either the A or B inputs, or a Mono Mixing DA. This last configuration is very useful in setting up an easy Mono Stereo test mix.
In short, Either (or both) inputs can be assigned to any (or no) outputs. Outputs can be either Balanced or Unbalanced, simply by removing the top cover and moving the well identified Jumpers.
Extremely quiet with very low IMD and TID.
This from Oxmoor:
FREQUENCY RESPONSE 20 Hz to 20 kHz ............................................ +0, – 0.3 dB
- 3 dB Points, Ref.1 kHz ................................. 4 Hz to 60 kHz (+4 dBm Output)
HUM AND NOISE Ref. +4 dBm Output @ Unity Gain .................. - 94 dB (20 Hz to 20 kHz BW, Unweighted)
DISTORTION Ref. +4 dBm Output @ Unity Gain
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)
CROSSTALK Channel to Channel (MDA-26) - 80 dB (20 Hz to 20 kHz, Input Terminated w/600
Ohms, Adjacent Channel Driven to +4 dBm)
AUDIO INPUT Type .............................................................. Electronically Balanced (RF Suppressed)
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 OUTPUT Type .............................................................. Electronically Balanced
(Unbalancing Jumpers Provided)
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 LISTING UL ................................................................. 1419
MAINS POWER Power Requirements ...................................... 100 to 125 VAC or 200 to 230 VAC
50/60 Hz; 13 Watts Maximum
MECHANICAL Overall Dimensions ........................................ 44H x 482W x 183D mm
(1.72" H x 19" W x 7.18" D)
Finish ............................................................ Textured Black Paint
Weight ........................................................... Shipping: 3.8 Kg (8.5 lb.) Net: 3.1 Kg (6.9 lb.)
The Oxmoor MDA-26 are high-performance audio buffer/ distribution amplifiers for professional applications. 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 input 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 electronically 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- put driver has an internal jumper that allows configuring for balanced
or unbalanced operation.
