How to wire two amps without a distribution block?

The most excellent option to enhance the audio system in your automobile is to add two amplifiers. It will enable you to connect more speakers and achieve the optimum audio quality. And using a power distribution block is one of the most acceptable ways to connect several amps to a single power cord. But can you wire to amps without a distribution block, you ask? If so, how o wire two amps without a distribution block?

However, to install two amplifiers in a car, you’ll need the proper equipment and to be aware of the numerous possibilities and setup considerations. Let’s check out how o wire two amps without a distribution block?.

We can connect two amps in a car if the wiring is done accurately. In the installation process, the speakers of the first amplifier must be wired first, followed by the subwoofer of the second amplifier.

There are numerous things to take into account while connecting two amps. These include the power needs, amplifier classes, and speaker impedance. A variety of two amp wiring methods without a distribution block selector switches and active crossovers are the other options for wiring two amps without a distribution block. Let’s go over each one individually.

Methods to wire two amps without a distribution block

Method1 – Using a Selector Switch

To connect two amps to one speaker or more, utilize a connection switch. The two amps won’t be used at once, though. You must purchase a selection switch. To connect two amps to the selection switch, follow the below-mentioned steps:

Step 1:

Look for “input” and “output” plugs on the back panel. To connect two or more amplifiers, use the “input” ones. The “output,” on the other hand, is connected to the speakers. 

Step 2:

From the side of the amplifier, search for the speaker wire. Connect it to input “A.” should do the same as the R and L outputs. The R input must follow the R output.

 If you make a bad connection, it could harm your amplifiers and speakers.

Step 3:

The second amp needs to be connected now. First, locate the second amp’s speaker wire and attach it to the “B” switch input.

Step 4:

Locate the switch’s speaker wire. Put it in front of the speaker input. The speaker wire from the switch’s output should be connected to the next speaker’s information, assuming you have two speakers.

Step 5:

Your amplifiers and speakers are now correctly connected. To select the amp to use right now, utilize the selector switch. You can test the sound quality when switching amps using a selector switch.

Remember to pick a selector switch that will allow you to move fluidly between amps without causing any harm to any amp.

Method 2 – Using Active Crossovers

By dividing an audio signal before the power amplification stage so that it can be delivered to two or more power amplifiers, each of which is linked to a different loudspeaker driver, active crossovers differ from passive crossovers.

Active crossovers help separate sound frequencies. What it does is as follows:

  • The tweeters are exposed to high frequencies.
  • The midrange speakers receive midrange frequencies.
  • The subwoofer that receives low frequencies must connect the low-frequency speakers to one amp and the high-frequency speakers to the other.

Here’s how to use an active crossover to link the amps:

Step 1:

Select the head unit’s output and attach it to the active crossover’s input. Connect the R head unit to the R crossover input. Apply the same procedure using the head unit’s L channels.

Step 2: Find your active crossover’s high output signal and attach it to your amplifier. The amp you connect to your tweeters should be your first choice.

Step 3: Connect your amp to the active crossover’s low signal output. It will be connected to the low-frequency speaker.

Step 4: Check the amps’ functionality. Play some music and change the volume with the knob

Which approach—active crossover or active switch—is best advised?

Both the methods work best, but if anyone asks my advice, I recommend using active crossovers to enjoy the outstanding and high-quality music when you increase the volume.

Also, check out – Where to Connect Remote Wire for Amp

Frequently Asked Questions

What is a distribution block?

A distribution block is a practical and cost-effective approach to distributing an electrical circuit to several branch circuit devices from a single input source. Consequently, your electrical panel will have fewer cables, saving you time and money.

What is the function of a distribution block in-car audio?

This power delivery will be handled by an audio power distribution block, ensuring your system operates at its best.

Can you connect two amps?

Most individuals frequently use a second amplifier to increase the volume of their system. They even connect two speakers to the amplifier simultaneously to effectively double or triple their output. This method of bridging amplifiers in a vehicle is adequate.

Can I plug an amp into another amp?

Using an active crossover is a straightforward way to link one amplifier to another. This gadget divides the audio’s high-end frequencies from its bass frequencies to transmit them to different amplifiers and speakers.

Is it possible that two amps power the same speaker set?

A single pair of speakers cannot be connected to two amplifiers. If you do this, your amps could blow, your fuses would be ruined, or the amp could go into protection mode.


An automobile can have two amps installed, which enhances the sound. You can adjust the settings and take pleasure in listening to various musical genres using it. This article outlines the steps and a step-by-step guide. You can follow these methods if you don’t want to use a distribution block.

Hope you will get your answer on how to wire two amps without a distribution block; follow the process mentioned above and choose the most straightforward method that fits your needs. For any related queries, you can check out our related articles.

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