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Graham-Patten D/ESAM230 Digital Audio Mixer

Graham-Patten D/ESAM230 Digital Audio Mixer  from Argosy
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Graham-Patten’s most cost-effective digital mixer.
The D/ESAM230's powerful performance and ergonomic design combine an audio control console and electronics chassis in a single table-top unit.
  • Compatible with standard ESAM II and D/ESAM IV protocols
  • Simultaneous support for both analog and digital inputs,
  • Programmable audio delay, 
  • Multi-band parametric EQ, 
  • Full monitoring and metering, 
  • Four digital and analog output buses. 


front back

Technical Data

Audio Inputs

Up to 24 input channels, analog and digital mixed.


10; A through H, Aux and R

Audio Outputs

Program: 4 Analog, 4 Digital (2 sets) 
Monitor: 2 Analog 
Send: 2 Digital


Multi-band parametric with shelving filters and notches

Audio Delay

5 Frames NTSC; 4 Frames PAL, per mixing channel

Tone Generator

Internal, fixed frequency, editor and manual control

Phase Reversal

180° Applied to any channel

Timing Input

Composite sync or video (NTSC/PAL) 
2 BNC (Loop-through)

Sample Rate

48kHz (NTSC/PAL) locked to TV field

Transion Rates

0 - 999 Frames

Transion Resolution

Field accurate, 1500 steps per second

D/MEM Registers

Standard: 40 D/MEM Registers plus 5 user configurations, battery back-up

Editor Protocol



4 Channel VU or PPM LED 28 segment bargraph, with adjustable peak indicators.


Internal audio data transfers: 24 bit precision 
Internal calculations: 56 bit precision

Analog Program Outputs


DC - Active balanced

Source Impedance:



+22dBu max. into 600Ω or greater

S/THD+N @ -20 dBFS:


S/THD+N @ 0 dBFS:


Signal to Noise:

>100dB @ Digital silence

Frequency Response:

+0 -0.2dB 15kHz-20kHz
± 0.1dB 20Hz-15kHz (Typical)

Crosstalk @ 0 dBFS:

>94dB @ 1kHz

Digital Program Outputs


2 Outputs: Program 1&2 (AES Digital Format, 20/24 bit) 
2 Outputs: Program 3&4 (AES Digital Format, 20/24 bit)

Digital Send Outputs


1 Output:Program 1&2 (AES Digital Format, 20 bit)

Audio Connectors

Analog (XLR or 1/4" phono jack), Digital (BNC)

Interface Connectors

Serial 9-pin D sub-min (RS-422) 
General Purpose (GPI) 9-pin D sub-min


Control Panel/
Electronic Chassis

16.875"(42.86cm) Wide x 16.25"(41.28cm) Deep 
Unit is 5.5"(13.97cm) High at rear, 1"(2.54cm) at front 
Allow 2"(5.08cm) for cabling at rear


Voltage Requirements

100 - 240 VAC


50 - 60 Hz

Power Consumption

50 Watts

Operating Temperature

10 - 40°C

Note: 0dBFS = digital clipping.

0dBu = 0.775V rms


mixers mixer audio control edit link

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