800R

Appendix A: Service Information

ONYX

Warranty Service

Details concerning Warranty Service are spelled out in the Warranty section on page 23.

If you think your Onyx preamp has a problem, please do everything you can to confirm it before calling for service. Doing so might save you from the deprivation of your Onyx preamp and the associated suffering.

These may sound obvious to you, but here are some things you can check. Read on.

Troubleshooting

No Power

•Our favorite question: Is it plugged in?

•Make sure the power cord is securely seated in the IEC socket [25] and plugged all the way into the AC outlet.

•Make sure the AC outlet is live (check with a tester or lamp).

•Is the POWER [10] switch on? Make sure the POWER switch on the front panel is in the ON posi- tion (up).

•Are any LEDs on the front panel illuminated? If not, make sure the AC outlet is live.

•Are all the lights out in your building? If so, contact your local power company to get power restored.

•If there are no LEDs illuminated on the front panel, and you are certain that the AC outlet is live, it will be necessary to have your Onyx 800R serviced. There are no user serviceable parts inside. Refer to “Repair” at the end of this section to find out how to proceed.

Bad Channel

•Is the LINE switch [2] in the correct position?

•Is the input GAIN control [1] for the channel turned up?

•Is the signal source turned up? Make sure the signal level from the selected input source is high enough to light up some of the INPUT meter [7] LEDs for that channel.

•If it is channel 7 or 8, make sure the MIC/LINE/HI-Z switch [9] is in the right position.

•Try the same source signal in another channel, set up exactly like the suspect channel.

Bad Output

•If it’s the BALANCED LINE LEVEL OUTPUT [17], make sure the DB25 connector is correctly wired (see Appendix B: Connections).

•If it’s the OPTICAL OUT [18], make sure the optical cable isn’t kinked or damaged, and that the connec- tors are securely seated at both ends.

•If it’s the AES/EBU OR S/PDIF OUT [21], make sure the DB25 connector is correctly wired (see Appendix B: Connections). Determine if the device to which the Onyx 800R is connected is operating in SINGLE WIRE or DUAL WIRE mode. Make sure the buttons above the AES/EBU OR S/PDIF OUT connector are in the correct positions.

Bad Sound

•Is the input connector plugged completely into the jack?

•Is it loud and distorted? Make sure the input GAIN control for the channel is set correctly. Reduce the signal level on the input source if possible.

•Are the Onyx 800R and the device to which it is connected locked to the same clock rate? If the Onyx 800R is operating on its own internal sample rate, make sure the device to which it is connected is set to external clock and is locking to the word clock either through the OPTICAL or the AES/EBU OR S/PDIF connections. If the Onyx 800R is set to EXTERNAL clock, make sure the LOCK LED is lit.

•If possible, listen to the signal with headphones plugged into the input source device. If it sounds bad there, it’s not the Onyx causing the problem.

Noise/Hum

•Turn down each channel, one by one. If the noise disappears, it’s coming from whatever is plugged into that channel.

•Check the signal cables between the input sources and the Onyx. Disconnect them one by one. When the noise goes away, you’ll know which input source is causing the problem.

•Sometimes it helps to plug all the audio equipment into the same AC circuit so they share a common ground.

•Make sure you are using shielded cable designed for digital audio transmission, like Belden 7880A.

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ONYX 800R

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Mackie 800R owner manual Appendix a Service Information, Warranty Service, Troubleshooting
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800R specifications

The Mackie 800R is a high-performance 8-channel microphone preamp that is designed for recording professionals and studios that demand exceptional sound quality and flexibility. This versatile unit stands out due to its robust build quality, advanced features, and user-friendly operation, making it a vital addition to any audio setup.

One of the main features of the Mackie 800R is its high-quality mic preamps, which employ the renowned Onyx technology. The Onyx preamps are characterized by their high headroom, low noise, and excellent linearity, resulting in clear, detailed sound reproduction. Each channel provides a gain range of up to 60 dB, allowing it to accommodate a wide variety of microphones, from dynamic to condenser, ensuring your recordings are always crisp and professional.

The 800R also includes eight balanced TRS outputs, which allow for seamless integration with mixers and audio interfaces. This flexibility simplifies the workflow in any recording environment, making it easy to patch into existing setups. Additionally, the unit features both analog and digital outputs, providing options for connecting to ADAT and S/PDIF devices, further enhancing its versatility.

Another notable characteristic of the Mackie 800R is its user-friendly interface. Each channel is equipped with a direct output, a 48V phantom power switch, and a -20dB pad, which allows users to tailor their settings on the fly. The built-in LED indicators provide visual feedback on signal levels, ensuring that users can easily monitor their inputs.

This preamp is also designed for durability with its solid metal chassis, which is built to withstand the rigors of both studio and live environments. Its compact size makes it ideal for mobile setups, allowing engineers to take high-quality audio with them wherever they go.

In summary, the Mackie 800R is a powerful and reliable microphone preamp that provides outstanding sound quality and flexibility for recording engineers and musicians alike. With advanced Onyx preamp technology, multiple output options, and a user-friendly design, the 800R stands out as an essential tool for anyone serious about capturing high-fidelity audio.
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