Mackie CFX 12 mkII 12 Ch. Compact SR Mixer w/Effects - Answered Questions & Fixed issues

Where are you getting the low output? It would be very strange if all channels failed in the same way so it is probably something common to them all. Can you get the clip light to illuminate at all by turning the gain up on a mic channel and shouting into the mic? You are referring to the gain at the top of the strip not the slider aren't you? What happens if you assign a channel to the other sub channel, does the level come up through that? What happens if you take the output from the aux send and you send signal there, is it the same issue? I may be completely wrong but I suspect if it is only mics that are causing a problem you may have the routing set up wrong or not set a level somewhere else right.

Assuming if you pan hard left on an input it comes out the left and panning hard right goes nowhere and as you say the tape input feeds through to both sides OK there is a very limited number of places where the problem can be. If you are confident open it up and check all the connectors and cables. If anything has come loose this may find it, otherwise it's a trip to the repair shop. The largest cost will be the taking apart and putting back together as the repair itself should be a simple one and diagnostics easy.

What makes you think the effects chip is bad? It is LIKELY a fine-pitch DSP that is far beyond what the average tech could do. If you could get one, you would have to take this to a shop specializing in surface mount rework. The chances of this chip being bad is very low. More probable is either pilot error or other circuits, especially those exposed to the external connections.

Sorry, I have looked at the schematics and the TAPE IN jacks are mixed into the MAIN outs AFTER the insert jacks, so your subs will NOT receive signal via the insert from the TAPE IN jacks.
You could make a small passive mixer merging the TAPE/CD before going to the crossover. This would require some non-standard cabling.... The other option is to run the CD into a regular stereo channel rather than the TAPE IN jacks... then the CD will go through the insert/crossover and to the subs as you desire. The last option is to use the crossover at the MAIN outputs instead of as an insert... which would be the CONVENTIONAL way... use BALANCED cables wherever possible.

Contact Mackie direct. They will know which component is failing. Link to the company for one of their powered speakers.

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If your Mackie SR1530 is powering on but you're not getting any sound, there could be a number of potential causes. Here are a few things you can try to troubleshoot the issue:

1. Check your connections: Make sure that all cables are properly connected and securely plugged in. Check both the cables going into the speaker and the cables that are connected to your audio source.
2. Check your audio source: Make sure that your audio source is turned on and properly connected. Try connecting a different audio source to the speaker to rule out issues with the source.
3. Check the volume levels: Make sure that the volume on both your audio source and the speaker are turned up. Try turning up the volume to see if you can hear anything.
4. Check the input settings: Make sure that the input settings on the speaker are correct. For example, if you are using an XLR cable, make sure that the input on the speaker is set to XLR.
5. Test the speaker with a different audio source: If you have access to another audio source, try connecting it to the speaker to see if you can get any sound.

If none of these troubleshooting steps work, there may be an issue with the speaker itself. It may be a good idea to contact Mackie customer support or a qualified audio technician for further assistance.

If you are experiencing an issue where the QSC RMX 1450 amplifier is not giving any sound when connected to the main output of your Mackie 16 OK mixer, but works when connected to the aux send, here are some possible causes and solutions:

1. Check the main output level on the Mackie mixer. If the level is too low or muted, this can cause the amplifier to not produce any sound. Increase the main output level on the mixer and check if the amplifier produces sound.
2. Check the cables connecting the mixer to the amplifier. If the cables are damaged or not connected properly, this can cause the amplifier to not produce any sound. Ensure that the cables are connected securely and are not damaged or broken.
3. Check the amplifier settings. Ensure that the amplifier is set to the correct input source and that the input gain level is set correctly. You may also want to check if there are any protection modes or limiters enabled on the amplifier.
4. Check the speaker connections. If the speakers are not connected properly or are damaged, this can cause the amplifier to not produce any sound. Ensure that the speakers are connected correctly and are not damaged.
5. If none of the above steps work, there may be an issue with the mixer or the amplifier. You may need to contact a qualified technician to further diagnose and repair the problem.

Remember to always follow the manufacturer's instructions and safety guidelines when working with audio equipmen

I would check the insert socket.

I doubt the issue will be the regulators if you have the correct voltage on them. Check where the hum is coming from. What frequency is the hum; 50/60HZ = mains hum = bad ground. 100/120HZ = power supply hum. Affected by a control somewhere maybe.

This unit will require an amp. I have set up several mixers and I do not watch output level numbers, you can get desired volume using amp. It does no good to drive input levels high output levels high and the turn down amp. Lower your inputs so no light flashes set master gain to -6 output and then raise amp volume. I have set up 16 mic mixer set individual levels and the feed to main mixer and controlled levels with one fader. I have taken mixes from main mixer to another mixer to control audio on video feed. A good band does not let member's set their levels . the audio person set levels, bad bands have members to set own level with resultant a mess that gets louder and produces sub par event. Remember good bands sound good and bad bands only sound louder, and bad

Question edited for clarity https://elektrotanya.com/mackie_thump_th-15a_sch.pdf/download.html Or contact Mackie direct https://mackie.com/sites/default/files/PRODUCT%20RESOURCES/MANUALS/Owners_Manuals/Thump12A_Thump15A_OM.pdf ..

You probably have issues with caps in the power supply....I would check that first...open it up and look for buldging caps and replace any that you find....

Hello, check if your Mackie, is with the latest Firmware update, you can get it on Mackie's official website I sent you the Mackie technical support link I hope you solve your concern Greetings Franco Dosil Hola, revisa si tu Mackie, esta con la ultima actualizacion de Firmware, puedes obtenerla en la pagina oficial de Mackie Te envio el link del soporte tecnico de Mackie Espero logres resolver tu inquietud Saludos Franco Dosil https://mackie.com/blog/support

Hello Abel, I sent you the link to download the service manual of the Mackie PROFX16 I hope you can solve the problem you have with your Mackie Greetings Franco Dosil Hola Abel, te envio el link para que descargues el manual de servicio de la Mackie PROFX16 Espero que puedas resolver el problema que tengas con tu Mackie Saludos Franco Dosil https://elektrotanya.com/mackie_profx16_profx22_sch.rar/download.html

Bypass the Effects by jumpering the EFX loop send/return jacks. Mine had a bad effects processor converter chip, that was random and lost main bus signal intermittently. arlingtonguitarshop-dot:com