ONYX 400F

Rear Panel

The rear panel is where you make all your analog and digital audio connections to the Onyx 400F (except for the headphones and the high-impedance instrument jacks on the front).

13. MIC/Line Inputs

These are Neutrik combo connectors, which accept balanced microphone inputs from an XLR connector or balanced line-level inputs from a 1/4" TRS connector. The microphone preamps feature our new Onyx design, with higher fidelity and headroom rivaling any stand- alone mic preamp on the market today.

The XLR inputs are wired as follows:

Pin 1 = Shield or ground

Pin 2 = Positive (+ or hot)

Pin 3 = Negative (– or cold)

The 1/4" inputs are wired as follows:

Sleeve = Shield or ground

Tip = Positive (+ or hot)

Ring = Negative (– or cold)

14. INSERTS

These 1/4" TRS jacks provide a send and return point for channels 1-4. Use the CHANNEL INSERT jacks to connect serial effects devices such as compressors, equalizers, de-essers, or filters to each individual channel.

The INSERT points are after the GAIN controls, and just before the analog-to-digital converters. The send (tip) is low-impedance, capable of driving any device.

The return (ring) is high-impedance and can be driven by almost any device.

Tip: Since the inserts are before the A/D converters, it’s a good place to strap a compressor on an unruly singer to avoid overloading the A/D converter without having to turn down the GAIN control a whole bunch.

Special insert cables are available, specially designed for this kind of insert jack. They are wired as follows:

 

ring

 

SEND to processor

tip

(TRS plug)

“from ti

sleeve

 

this plug connects to one of the

“to ring”

mixer’s Channel Insert jacks.

RETURN from processor

Tip = Send (output to effects device) Ring = Return ( input from effects device) Sleeve = Common ground (connect shield to all three sleeves)

Besides being used for inserting external devices, these jacks can also be used as channel direct outputs (post-GAIN). This is an unbalanced direct out.

Here are three ways you use the INSERT jacks:

MONO PLUG

Channel Insert jack

Direct out with no signal interruption to master.

Insert only to first “click.”

MONO PLUG

Channel Insert jack

Direct out with signal interruption to master.

Insert all the way in to the second “click.”

STEREO

PLUG

Channel Insert jack

For use as an effects loop.

(TIP= SEND to effect, RING = RETURN from effect)

MIC/LINE

NYX MIC

P

O

 

RE

4

MIC/LINE

NYX MIC

PRE

O

3

MIC/LINE

NYX MIC

P

O

 

RE

2

MIC/LINE

NYX MIC

P

O

 

RE

1 3

4

INSERTS

 

LINE IN

 

 

LINE OUT

 

CR

1

7

5

7

5

3

1

L

2

8

6

8

6

4

2

R

 

14

ONYX 400F