HR624 MK2

SERVICE INFO

If you think your Mackie product has a problem, please check out the following troubleshooting tips and do your best to confirm the problem. Visit the Support section of our website (www.mackie.com/support) where you will find lots of useful information such as FAQs, and documentation. You may find the answer

to the problem without having to send your Mackie product away.

Troubleshooting

No Power

•Our favorite question: Is it plugged in?

•Make sure the power cord is securely seated in the IEC socket [7] 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 [9] switch on the front panel pushed in and the POWER MODE [6] switch on the rear panel in the ON position?

•Is the power ring [10] on the front panel illuminated? If not, make sure the AC outlet is live. If so, refer to “No Sound” below.

•If the power ring is not illuminated, and you are certain that the AC outlet is live, it will be necessary to have the HR624 MK2 serviced. There are no user-serviceable parts inside. Refer to “Repair” at the end of this section to find out how to proceed.

No Sound

•Is the power ring [10] on the front panel illuminated? If not, refer to “No Power” above.

•Is the INPUT SENSITIVITY [2] control turned up?

•Is the signal source turned up? Make sure the signal level from the mixing console (or whatever device immediately precedes the studio monitor) is high enough to produce sound.

•If it’s a stereo pair, try switching them around. For example, if a left output is presumed dead, switch the left and right cords at the monitor end. If the problem switches sides, it’s not the monitor. It could be a bad cable, or no signal from the mixer.

Bad Sound

•Is the input connector plugged completely into the jack? If using a 1⁄4" TS or TRS plug, make sure it is plugged all the way in.

•Is it loud and distorted? Reduce the signal level at the mixer.

•If possible, listen to the signal source with headphones plugged into the preamp stage. If it sounds bad there, it’s not the monitor.

•Too much bass or not enough bass? Move around the room and see if the bass response changes. It’s possible your listening position coincides with a room mode where the low frequencies either become exaggerated or nulled. If so, try moving the monitors to a different position, or moving your listening position.

Noise/Hum/Buzz

•Check the signal cable between the mixer and the monitor. Make sure all connections are secure. These problems usually produce crackling noises, hum, or buzz.

•If connecting an unbalanced output to the HR624 MK2 balanced input, make sure the shield is connected to the unbalanced ground of the source and to pins 1 and 3 of the XLR (or the sleeve and ring of the TRS jack).

•If a CATV cable is connected to the system, try disconnecting it. If the hum goes away, call your cable carrier to check for proper grounding of the cable.

•Make sure the signal cable is not routed near AC cables, power transformers, or other EMI sources (including wall warts and line lumps!). These sources usually produce hum.

•Is there a light dimmer or other triac-based device on the same AC circuit as the monitor? Dimmers cause buzzing noises. Use an AC line filter or plug the monitor into a different AC circuit.

•Excessive hiss is an indication of an incorrect gain setting somewhere before the speaker.

•If possible, listen to the signal source with headphones plugged in. If it sounds noisy there, it’s not the monitor.

I hear sound from the monitors after I switch the AC power off!

•Use the front panel switch to turn the monitors on and off, or turn off the signal going to the monitors when the AC power is turned off.

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HR624 MK2