1. Low-frequency sound system equipment connection sequence: Console (Group 1-2) → Equalizer → Crossover → Limiter → Subwoofer Amplifier → Subwoofer Speakers.

2. Auxiliary Audio System Equipment Connection Sequence: Console (Group 3-4) → Equalizer → Delay (optional) → Limiter → Auxiliary Speaker Amplifier → Auxiliary Speakers.

3. Main audio equipment connection sequence: Console (L-R Main Channel) → Equalizer → Exciter (optional) → Feedback Suppressor (optional) → Limiter → Main Speaker Amplifier → Main Speakers.

4. Audio equipment connection sequence for monitoring: Mixing console (AUX output) → Equalizer → Limiter → Monitor speaker amplifier → Monitor speakers.

The first connection method allows for independent control of the bass volume, making it flexible to adjust the volume of mixers 1-2 for slower beats or disco, where it can be turned up, and then down during the singer's performance. The second connection method also offers excellent control over the auxiliary speaker sound. For the main speakers, we naturally prefer to output the volume from the L-R master output of the mixer. As for the monitoring system, it is typically set to output from the AUX, enabling flexible adjustments of the mixer's channel volumes according to the singer or band's needs. However, in smaller sound systems, the monitoring signal can be directly taken from the main channel signal. Note for the first and second connection methods: Since we have already independently output signals from the corresponding rear outputs for the 1-2 and 3-4 groups to the bass and auxiliary systems, there is no need to output the 1-2 and 3-4 groups through the mixer's total volume output. Therefore, the switch to switch the 1-2 and 3-4 groups to the mixer's total volume should no longer be activated.

Of course, we must flexibly arrange the sequence of equipment connections based on the requirements and the number of devices; the above sequence is for reference only.

Five: Key Points for Audio Equipment Connection

Above, we briefly introduced the types, manufacturing, and connection sequence of various cables. When it comes to the specific connection of equipment, faced with an array of numerous device ports, many sound engineers are at a loss as to where to start. In reality, it's quite simple; just remember the following points:

1. Balance Method: Most audio equipment now features balanced ports on the rear panel. We simply choose whether to connect devices using balanced lines with XLR connectors or with TRS 6.35mm stereo jacks.

2. Unbalanced Port: Although most audio equipment rear panels now feature balanced ports, some devices still have unbalanced ones. For instance, some electronic crossover output jacks are labeled with "Balance OUT" and "Unbalanced OUT." Therefore, we can also use unbalanced cables with TS 6.35mm mono plugs to connect the equipment, as long as the cable length is not too long and the interference is not excessive; this connection will suffice.

3. IN Inputs and OUT Outputs: Newcomers might get overwhelmed by all the ports on the equipment, but there's a trick: No matter what audio equipment, it's basically divided into two major parts: "IN Inputs" and "OUT Outputs." So, just focus on "IN and OUT." Don't connect the unfamiliar ports randomly. In summary, connecting the devices is as smooth as flowing water: Water coming from upstream should flow into the "IN Inputs"; while water heading downstream should pass through the "OUT Outputs" before flowing out. It's not that complicated, step by step.