Can i connect my mixer to the input of the cdr 765 then connect the amp to the outputs. Will this work and record?

U connect the recorder to the audio outputs of mixer. If you only have one set of outputs, get a y adapter and have one set of outputs go to the recorder and other set to the amp.

You may download the manual at https://www.p4c.philips.com/files/c/cdr765bk/cdr765bk_dfu_eng.pdf

You can only do this with a LINE OUT of your amplifier, or HEADPHONE out, as these are line level outputs and will not hurt the inputs of your mixer. Otherwise the signal going to the mixer will be too hot and ruin it. For a Marshall amp,I would prefer to mic it anyway, and run the mic cable to the mixer.

So you're saying an unnamed mixer is feeding a potential analog signal to a CDR. You're monitoring the CDR output at an unnamed amp.

You haven't established that there is any signal to BE heard.

WHAT is the actual source sound device (BEFORE the mixer)? Is the source input visible on the CDR when it's in Record Mode?
Have you perused the manuals?

NEVER USE EXCEPTIONALLY HIGH VOLUME SETTINGS FOR TROUBLESHOOTING. If a signal is inaudible at half volume it's effectively not there. YOU WILL BLOW SOMETHING UP WHEN YOU FIND THE MISPLACED CONTROL AND FLIP IT.

There are a number of configurations for a mixer like the 1832, the most common are PA system and Recording system. There are Main output jacks which carry the mix as summed in the main faders. These in a PA system would feed the pa amplifiers which drive the house speaker system for the audience. These connectors are XLR 3 pin type on the rear, intended for professional pa amplifiers which use balanced +4dbv line input level. Amplifier which have 3 pin XLR connectors for input signals can accept that high level signal. For home style HiFi amplifiers, the signal level is nominally -10DBv and balanced or unbalanced signal lines with 1/4in diameter phone plugs which are connected to the mixer by way of a second set of Main output connectors which are 1/4in phone jacks. Use whichever amplifier input level your amp has.
If you are not using it as a main PA house mixer, but using it for recording, the main output connectors go to a 2 channel recorder or computer sound card recorder. The power amp and your monitor speakers are connected to the connectors labeled "Control Room" (CTRL Rm). These output are useful for recording because the signal through the mixer can be monitored from several buses, Solo, main mix, selected by buttons provided. The buttons only affect the signal heard through the control room monitors, and not the main output which only sees the main mix so selecting "solo" does not interrupt the signal going to the recorder while the engineer in the control can be checking other signal paths through the board.

The order is mixer, equalizer and amp. The output of the mixer connects to the input of the equalizer and the output of the equalizer connects to the input of the amp. The equalizer has three types of input and output connections. They are XLR, 1/4 inch and screw terminals. The mixer will have one or two of the three. Choose XLR if possible on the mixer, choose line level output on the mixer if possible. A XLR male to female cable is needed for the connection. The equalizer has two channels, if the mixer has two output channels the two output channels of the mixer can connect directly to the two input channels of the equalizer. If the amp has two input channels, the two output channels of the equalizer can connect directly to the two input channels of the amp. If the mixer only has one output channel then only one channel of the equalizer can be used and one channel of the amp likewise. A XLR male to female connection cable can be used to connect the equalizer to the amp.

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How is everything hooked up?

Mic to Mixer, and Mixer to Laptop? Or is your mic connected directly to your laptop?

To do this properly, you will need a secondary audio input device of some kind that accepts line level input. Microphone inputs are intended for low level signals, and are not going to accept the input form a mixer properly. (you can get it to work, but it will generally be distorted)

There are various USB or PCMCIA audio input card options that aren't too expensive. Once you have that, you would need to route your music and microphone through your mixer, and the output of the mixer to your audio input device.

Your mixer is already grounded, and does not need any additional grounding. It is grounded through the Power Cord.

Now, the feedback might be coming from one of the units you have connected to the mixer. The issue could also be the cable you are connecting to your recorder. Are you recording to a computer, or to some other external recorder (CDR / DVR / MDR, etc?) - try a different cable. Also try the different outputs on the mixer - you have 2 balanced line outputs you can record directly from. Don't use the RECORD OUT line, it's an unbalanced line, and if you want a good quality signal to record, your best bet is to use the XLR outputs. However, that might be connected to your amp or something.

What do you have going to the unit? Disconnect everything, and try by connecting each item 1 by 1, to eliminate where this feedback is coming from. Also, check for any ground loops that you might have, if you have a lot of equipment hooked up in your set up. (Educate yourself on Ground Loops)

If all else fails, get yourself a HUM ELIMINATOR.

- OPTiC
DJ Equipment Repair & Service
A DJ Pro Audio Co.

Are you running your keyboard etc through an amp or mixer? You need to connect the pre-amp outputs / tape outputs of that amp or mixer to the analogue inputs of the cdr.