No sound I have a Mackie CFX12 Mixer. I connect the Power Amp to CFX12 (Main In) and speakers, connect the CD to CFX12 (Tape In). I did not get any sound. Please advise what was the problem for not getting any sound and how to connect an additional CLD to the CFX12. Many thanks.

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

If you are getting signal from you mixer at leaves tha are clipping your amp, then the mixer is working and at least the front end of your amp is working to register the clipping. In that case, your problem is-
1. The amp outputs are blown, check by hooking up to a different amp.
2, The speaker wires are connected incorrectly.
3. The speakers are not working. Try a different set.

you need a power amplifier between the mixer and the speakers to actually drive the speakers. You would have to choose which amp to use (the manual, found here: http://www.bose.ca/controller?url=/shop_online/speakers/stereo_speakers/acoustimass_5/index.jsp#manuals suggests between 10-200 WRMS for power), and thus would have to determine the cabling options depending on the amp you choose, but...go from either the MAIN or CONTROL ROOM outputs of the Mackie mixer into the inputs of the power amp. Then go from the outputs of the power amp to the inputs on the Acoustimass bass module, which also runs the Acoustimass satellite speakers.

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.

Make sure you are using BALANCED interconnection cables to the speakers, either XLR or TRS connections. ALSO make sure all interconnected equipment such as the speakers AND the mixer are powered from the SAME receptacle at the venue... yes you have to run extension cords... the pro's do it so they don't have hum and other noise and don't damage their equipment.

Balanced audio interconnects (either XLR or TRS cables from the mixer and then balanced audio interconnects from the amp daisy chain inputs to the existing speaker inputs. If the amps do not have linked input jacks, then use TRS type WYE connectors at the inputs. Then use speaker rated cables from the amps to the passive speakers.

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.

Use the main left and right... the CR outputs are INTENDED for running control room monitors.

With a stereo splitter cable that takes the stereo 1/8 plug of the computer into two RCA plugs you could go into the "Tape Input" of the mixer... OR take a 1/8 stereo splitter cable from the PC splitting to a pair of 1/4 inch plugs go into one of the 4 stereo input pairs on the mixer... like 7 and 8 or 9 and 10 for example.

Refer to your EV user manual, page 23, part 2.

You run the outputs of the Mackie into the stereo "returns" on the EV.

Use TRS interconnect cables as these are balanced lines.