You have to use the TAPE 2 (or monitor) on the receiver. It will take two sets of RCA cables. Both the receiver and the EQ will have an input and an output.
- Run the output/REC (from TAPE 2) to the input on the EQ.
- Then, run the input from the receiver (TAPE 2 again) to the output on the EQ.
The EQ will have another 2 sets of RCA jacks to hook up a second tape deck (because you used the jacks on the receiver for the EQ). You don't have to hook anything to these if you don't want to, or don't have a second tape deck.
The receiver will have a monitor button, which most of the time is labeled as TAPE 2/MONITOR. Select whatever input you want to use (CD, Tuner, Aux, etc.), then press the MONITOR/TAPE 2 button. When that is on, the EQ will be in the audio chain - you'll be able to use the EQ to adjust the sound. If you turn the MONITOR off it will take the EQ out of the audio chain - the EQ settings won't affect the sound.
Keep in mind, the EQ will also have a button to select the TAPE 2 input. If you have a second tape deck hooked up to the EQ, this is how to use it. Make sure that the tape input is off on the EQ, if you aren't listening to that second tape deck.