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Connection and level guidelines for XLR and ¼" Jacks

High Level Signals ALWAYS Use the XLR Connectors

Many Eventide audio products give you a choice of XLR or 1/4" input and output connectors.  When a +4dB line level signal is fed to an Eventide from a +4db FX Loop Send/Line Out/Preamp Out, you must use XLR connectors for inputs and outputs on any Eventide unit. This is true for: H3000/3500 DSP4000/4500/4000B GTR4000 DSP7000/7500/4000B+ ORVILLE/ORVILLE R ECLIPSE H8000/H8000A

The H3000/3500 only have XLR connectors, and these can be changed to accept either +4dBm or -10dBm nominal operating levels. They are set to "pro audio," +4dBm at the factory. To change this, remove the top cover of the unit, pull the small jumper blocks from the +4 pins and put them on the -10 pins. Refer to the H3000/3500 manual for a detailed schematic. Warning : disconnect MAINS before opening the unit. Refer to a qualified technician if in doubt.

DSP4000/4500/4000B/GTR4000/ECLIPSE handle unbalanced -10dB signals on ¼" input and output connectors. 

DSP4000B+/7000/7500/ORVILLE/H8000/H8000A handle unbalanced -10dB signals on ¼" input jack connectors. There are no ¼" output connectors, so unbalancing of XLR outputs is required. This is described below.

Wiring

H3000/3500 Series

  • Pin 1 : GROUND
  • Pin 2 : -PHASE (Negative)
  • Pin 3 : +PHASE (Hot)

Use line level cables (2 connectors + Ground) as those made by pro audio companies like Mogami, Belden , Canare, Monster Cables, Klotz, etc.

Input from unbalanced ¼" jack: Connect XLR Pins #1 & #2 to ¼" Ground Connect XLR Pin #3 to ¼" Tip

Output to unbalanced ¼" jack: Connect XLR Pin #1 to ¼" Ground Leave XLR Pin #2 unconnected Connect XLR Pin #3 to ¼" Tip 

DSP4000/4500/4000B/GTR4000 Series

  • Pin 1 : GROUND
  • Pin 2 : +PHASE (Hot)
  • Pin 3 : -PHASE (Negative)

Use line levels cables (2 connectors + Ground) as those made by pro audio companies like Mogami, Belden, Canare, Monster Cables, Klotz, etc.  Always keep balanced the cables ends connected to the Eventide XLRs I/O and unbalance the ¼" ends connected to unbalanced gear.

Input from unbalanced ¼" jack: Connect XLR Pins #1 & #3 to ¼" Ground Connect XLR Pin #2 to ¼" Tip

Output to unbalanced ¼" jack: Connect XLR Pin #1 to ¼" Ground Connect XLR Pin #2 to ¼" Tip. Leave XLR Pin #3 unconnected

DSP7000/7500/4000B+ Series ORVILLE/ORVILLE R Series ECLIPSE H8000 Series

  • Pin 1 : GROUND
  • Pin 2 : +PHASE (Hot)
  • Pin 3 : -PHASE (Negative)

Use line levels cables (2 connectors + Ground) as those made by pro audio companies like Mogami, Belden , Canare, Monster Cables, Klotz, etc. Always keep balanced the cables ends connected to the Eventide XLRs I/O and unbalance the ¼" ends connected to unbalanced gear.

Input from unbalanced ¼" jack: Connect XLR Pins #1 & #3 to ¼" Ground Connect XLR Pin #2 to ¼" Tip.  If either pins #2 or #3 are unconnected, you will get more noise and hum than signal!

Output to unbalanced ¼" jack: Connect XLR Pins #1 & #3 to ¼" Ground Connect XLR Pin #2 to ¼" Tip.  If either pins #2 or #3 are unconnected, you will get more noise and hum than signal!