Introduction, Onyx 800r – MACKIE 800R User Manual
Page 4

4
ONYX 800R
ONYX 800R
Introduction
Thank you for choosing a Mackie Onyx 800R eight-
channel professional microphone preamplifi er. The Onyx 
Series of mixers and microphone preamps are designed 
for the digital era and offer the newest features and latest 
technologies for live sound reinforcement and analog or 
digital studio recording in a durable, road-worthy package.
The Onyx 800R is equipped with eight of our new
premium precision-engineered studio-grade Onyx mic 
preamps. Mackie is renowned for the high-quality mic 
preamps used in our mixers, and the Onyx mic pre’s 
are better than ever, with specifi cations rivaling other 
stand-alone mic preamplifi ers at twice the price.
The Onyx 800R is designed to be a transparent audio
interface for direct tracking to MDM, HDR, or DAW re-
cording applications. Its selection of analog and digital 
output options provides the fl exibility to connect in 
almost any application.
Channels 1 and 2 feature an impedance select switch,
which lets you fi ne tune the mic pre for vintage tube and 
ribbon microphones. Channels 1 and 2 also provide the 
option of engaging a Mid/Side Decoder for M-S stereo 
mic’ing. Adjusting the balance between channels 1 and 2 
with their gain controls provides an effective way to vary 
the width of the stereo image.
Channels 7 and 8 feature high-impedance instrument
inputs so you can connect an acoustic, electric, or bass 
guitar directly to the mic preamp, eliminating the need 
for an external direct box.
Each channel has a mic/line switch, a polarity reverse
switch, individual phantom power switch, low-cut fi lter 
switch, and a gain control. 
A sample rate selector allows you to choose 32, 44.1,
48, 88.2, 96, 176.4, or 192 kHz sample rates, or to use 
an external clock connected to the external word clock 
input connector on the rear panel. You can also select 
between 24-bit or 16-bit dithered word lengths at the 
digital outputs.
The rear panel provides individual XLR balanced
mic input connectors for each channel, and balanced 
line inputs on a DB25 connector. Analog balanced line 
outputs are also provided on a DB25 connector. Digital 
outputs are provided on two optical Toslink connectors 
using the ADAT lightpipe digital audio format. AES/EBU 
or S/PDIF formats are available on a DB25 connector, 
with selection buttons for impedance, pro or consumer 
status bits, and single-wire (two-channel) or dual-wire 
(single-channel) operation.
HOW TO USE THIS MANUAL
We know that many of you can’t wait to get your new
microphone preamplifi er hooked up, and you’re probably 
not going to read the manual fi rst (sigh!). So the fi rst sec-
tion after this introduction is a Quick-Start Guide called 
“Getting Started” to help you get the Onyx 800R set up 
fast so you can start using it right away. Right after that 
are the ever popular hook-up diagrams that show typical 
setups for live sound and recording.
Then, when you have time, read the Features Descrip-
tion section. This describes every knob, button, and 
connection point on the Onyx 800R.
Throughout this section you’ll fi nd illustrations with
each feature numbered. If you want to know more about 
a feature, simply locate it on the appropriate illustra-
tion, notice the number attached to it, and fi nd that 
number in the nearby paragraphs.
This icon marks information that is 
critically important or unique to the 
Onyx 800R. For your own good, read 
them and remember them. They will 
be on the fi nal test.
This icon leads you to in-depth 
explanations of features and practi-
cal tips. While not mandatory, they 
usually have some valuable nugget of 
information.
A PLUG FOR THE CONNECTOR SECTION
Appendix B is a section on connectors: XLR connec-
tors, balanced connectors, unbalanced connectors, and 
the two types of DB25 connectors used on the Onyx 800R.
More resources on our websitTHE GLOSSARY: A Haven of Non-Techiness for
the Neophyte
The “Glossary of Terms” is a fairly comprehensive
dictionary of pro-audio terms. If terms like “clipping,” 
“noise fl oor,” or “unbalanced” leave you blank, refer to 
this glossary for a quick explanation.
ARCANE MYSTERIES ILLUMINATED
“Arcane Mysteries” discusses some of the down ‘n’
dirty practical realities of microphones, fi xed installa-
tions, grounding, and balanced versus unbalanced lines. 
It’s a goldmine for the neophyte, and even the seasoned 
pro might learn a thing or two.
