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ESU1808 

ESI

 

 

21

8. Technical Specifications 

Interface 

 

Type 

USB 2.0 Full Speed / High Speed support 

Firmware 

Firmware update via USB possible 

Digital Clock 

Low jitter due to USB independent PLL 

I/O Configuration 

18 audio input channels & 8 audio output channels audio interface 

1 port (16 channels) input & 1 port (16 channels) output MIDI interface 

Resolution & Sample Rates 

24bit / 44.1kHz, 48.0kHz, 88.2kHz, 96.0kHz in High Speed mode 

 

Line Input 

 

Type 

12 x Balanced/Unbalanced 1/4" TRS Input 

Level 

IN 9-16: +4dBu Nominal (@-16dBFS) , +20.2dBu max, dev/- 0.2dB 

IN 5-8: -10dBu Nominal (@-16dBFS) , +8.4dBu max, dev/- 0.1dB 

Frequency Response 

20Hz to 20kHz, +/- 0.05 dB 

THD + N 

IN 9-16: 0.0006% A-weighted (1kHz @ -3dBFS) 

IN 5-8: 0.0004% A-weighted (1kHz @ -3dBFS) 

Dynamic Range 

102.0 dB A-weighted (1kHz @ -60dBFS) 

Impedance 

IN 9-16: 10k ohm (1/4" TRS), IN5-8 : 20kohm 

A/D Converter 

Type  

Dynamic Range 

S/(N+D) Ratio 

Interchannel Isolation 

24bit, 96KHz 

107dB (@ -60dBFS A-Weighted) 

-100dB (@ -1dBFS, measurement method) 

110dB 

 

Microphone Preamplifier 

 

Type 

Balanced XLR (+48V Phantom Power support) 

Max Input Level  

-5dBu max (PAD OFF), +15.0dBu max (PAD ON) 

Gain Range 

+20.0dB min ~ +68dB max (PAD OFF), 0dB min ~ +48dB max 

Equivalent Input Noise 

126 dBu (22kHz BW, +60dB Gain, 150 ohm) 

THD + N 

0.0009% A-weighted (1kHz @ gain +35dB) 

Frequency Response 

10Hz ~ 50kHz @+50dB (40Hz~15kHz : +0.06, -0.58dB) 

Impedance 1.5K 

Ohm 

 

Hi-Z Instrument Input 

 

Type 

2 X Unbalanced 1/4" with Gain control 

Level 

-10dBu Nominal (@-16dBFS) , +8.4dBu max 

Gain Range 

0dB min ~ +38dB max 

Frequency Response 

20Hz to 20kHz, +/- 0.24 dB 

THD + N 

0.001% A-weighted (1kHz @ -3dBFS) 

Dynamic Range 

100.2 dB A-weighted (1kHz @ -60dBFS) 

Impedance 200K 

Ohm 

 

Analog Output 

 

Type 

8 x Balanced/Unbalanced 1/4" TRS Output  

Level 

+4dBu Nominal (@-16dBFS) , +20.0dBu max, dev/- 0.2dB 

-10dBu Nominal (@-16dBFS) , +8.2dBu max, dev/- 0.1dB 

ATT Range 

0dB ~ -63.5dB (0.5dB step size) 

Frequency Response 

20Hz to 20kHz, +/- 0.02 dB 

THD + N 

0.0007% A-weighted (@ -3dBFS) 

Dynamic Range 

111dB A-weighted 

Impedance 

330 ohm (1/4" TRS) 

D/A Converter 

Type  

Dynamic Range 

S/(N+D) Ratio 

Interchannel Isolation 

24bit, 192KHz 

112dB (@ -60dBFS with A-Weighted) 

-94dB (@ -1dBFS, measurement method) 

100dB 

 

MIDI I/O 

 

Type 

5pin DIN Standard MIDI Connector 

Summary of Contents for ESU1808

Page 1: ...18 in 8 out USB 2 0 Hi Speed External Recording Interface User s Guide...

Page 2: ...ESI Copyright 2007 Revision 1 November 2007 www esi audio com...

Page 3: ...Windows 15 5 4 Pull Down Menu Mac OS X 15 6 Hardware Monitoring Mix Out 15 6 1 Enable Monitoring MIX button 15 6 2 Monitoring volume for input channels 16 6 3 Monitoring volume for playback channels 1...

Page 4: ...nels on a USB audio product in this price range 1 1 What s in the box ESU1808 USB audio interface as 1U rack device Steinberg Cubase LE 4 DVD ROM ESI ESU1808 Driver CD ROM incl additional bundle softw...

Page 5: ...t is shown by the peak LEDs above the gain knob Input 3 4 Hi Z instrument inputs Input 3 4 are provided as high impedance HI Z inputs with individual GAIN control and a peak LED next to each input Use...

Page 6: ...put enabled or the signal from output channel 1 2 only disabled A detailed description of monitoring signals with ESU1808 is provided in chapter 6 Headphone Output The headphone output is provided as...

Page 7: ...turning ESU1808 on off use the POWER switch located here at the rear panel MIDI I O The MIDI IN and OUT connectors are provided on the rear panel Use these connectors to connect ESU1808 to a controlle...

Page 8: ...this output works as mix and monitoring output If disabled this output works as balanced unbalanced line output 7 8 Output 1 6 analog line outputs Output 1 6 are provided as balanced unbalanced line l...

Page 9: ...e LE 4 installation internet connection for Cubase LE 4 activation Mac OS X 10 4 4 or higher 3 2 Installation After unpacking ESU1808 connect the power supply to the special connector on the rear pane...

Page 10: ...picture below Click Next The installer now informs you that the driver installation will start as shown on the right picture below Confirm this with Next During the following process you will see a d...

Page 11: ...n completed successfully Uninstallation If you are not intending to use ESU1808 for a longer time on your Windows computer we recommend to uninstall the driver To do this go to My Computer Control Pan...

Page 12: ...on by clicking Install After the files have been copied to your hard disk the following confirmation dialog appears After clicking Restart your Mac will reboot Congratulations the installation is fini...

Page 13: ...con in the task notification area To open it under Mac OS X launch the ESU1808 Panel application in your Applications folder if you use it frequently you might want to move it to your dock 5 1 Informa...

Page 14: ...ed in 0 5dB steps With the mute button M under each channel playback can be muted or unmuted again The LINK button under a channel pair links the left and right volume slider allowing you to control t...

Page 15: ...e rather than in the ESU1808 Control Panel 6 Hardware Monitoring Mix Out ESU1808 provides extensive features for hardware monitoring You can monitor signals via the MIX OUT output located on the rear...

Page 16: ...l time This is especially a problem when monitoring with headphones The solution is a mono down mix that can be enabled with this button When activated both signals from input 1 2 are audible on left...

Page 17: ...at startup or shutdown If this bothers you please disable the Windows system sounds completely or use your internal onboard soundcard for them rather than ESU1808 7 1 Windows Multimedia setup The Win...

Page 18: ...ks or small drop outs when Mac OS X system sounds are played We recommend to play these signals via built in audio instead If you want to change settings of ESU1808 you need to select it under Propert...

Page 19: ...ubase LE 4 for more than 15 days you need to activate it with this software via the internet This means that you need an active internet connection on the computer you are installing Cubase LE 4 We re...

Page 20: ...With Add Bus you can add a new Mono or Stereo bus The screen shot above shows several mono busses which allows you use each single channel as a separate mono input in your projects In the Device Port...

Page 21: ...dB Microphone Preamplifier Type Balanced XLR 48V Phantom Power support Max Input Level 5dBu max PAD OFF 15 0dBu max PAD ON Gain Range 20 0dB min 68dB max PAD OFF 0dB min 48dB max Equivalent Input Nois...

Page 22: ...aution Any changes or modifications in construction of this device with are not expressly approved by the party responsible for compliance could void the user s authority to operate equipment Note Thi...

Page 23: ...ESU1808 ESI 23 Parts of this manual are continually being updated Please check our web site www esi audio com occasionally for the most recent update information...

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