Passive PA Mixers

Live PA setups should always include a passive PA mixer, this helps to accurately place each of the sound signals in your overall mix. This can take a fair amount of practise to get it right, although once you have learned the art behind a good mix you will be able to produce a similar mix at all future performances. The mixers are built to resist the pressures of live use including all transportation between performance venues.

Buy Passive PA Mixers

If a passive mixer is used alongside an active speaker system, it will lend a small amount of the power from the amplifier within. Additionally if used with a passive system, the external amplifier used to operate each speaker will also draw power to the mixer itself. There are mixer-amplifiers available elsewhere in the store that combine these aspects, but we are specifically focusing on the passive PA mixer.

A 4 channel mixer is advised for small groups of singers or perhaps to make a karaoke night or choir practise sound more professional. XLR cables are the most common microphone connection, most mixers have many XLR inputs built into them for convenience. Connecting multiple separate microphones to a 4 channel microphone mixer allows you to change the level of volume and effects such as echo, individually.

Microphone Mixers

As mentioned, a microphone mixer allows control over each channel by separate volume dials for you to blend with other channels such as instrument lines or other vocals. The larger the mixer, the more channels you can combine, if working with two or more vocalists you can balance the vocal signals from the microphones very easily. Mixers will usually have multiple ways to manipulate the sound signal received, some even with onboard effects for extra reverb/echo.

Mixers consist of vertical channel strips, which often have the physical input somewhere on the strip so users are aware which signal they are working on. Once the input is connected, you can alter the sound to your requirements using the available means, usually a combination of twistable dials and pushable buttons. You may have heard the phrase sound check before, this essentially is an opportunity for mixer users to finalise levels prior to a live performance.

The sound engineer using the mixer will individually request the musicians to play how they would normally while keeping an eye on the coloured indicator bars, ensuring they are not clipping into the red. Once this individual sound check is done, they may also request all of the musicians to play together, including any vocalists to get a better representation of the fine sound. Again, engineering live sound via a mixer takes practise and patience, research some live sound tips and stick with the rehearsals to see quicker results.

What are they?

Passive PA mixers are audio mixing consoles. They are also sometimes referred to as unpowered mixers or line mixers. They are also commonly used by musicians, DJs, sound engineers, and audio enthusiasts who require a flexible and affordable audio mixing solution that does not have built-in amplifiers. They are especially popular in settings where space and weight are a concern, such as small venues, home recording studios or outdoor events.

Unpowered PA mixers typically have a range of inputs, such as XLR, 1/4" jack, or RCA inputs, that allow you to connect microphones, instruments, and other audio sources. They also typically have a variety of controls, such as volume, tone, and effects, that allow you to adjust the audio levels and create the desired sound.

To use a passive mixer, you would typically connect the audio sources to the inputs on the mixer, adjust the levels and controls as desired, and then connect the mixer to an external power amplifier. The power amplifier would then amplify the audio signal and send it to the PA speakers. These mixers can also connect directly to active speakers without the need for an amplifier.

Where are passive PA mixers typically used?

Passive PA mixers typically have multiple channels, each with a separate volume fader, equaliser, and other controls that allow the user to adjust and customise the sound of each audio source. PA mixing desks can be used for public events such as live performances and parties, and are commonly used in halls, marquees and churches.

PA mixers are often used in conjunction with an external power amplifier and PA speakers, allowing the user to control the sound levels and quality of the audio output to the speakers. Some passive mixers also have built-in effects processors, such as reverb or delay, which can be used to enhance the sound of the mix.

What are the advantages of passive PA mixers?

Passive mixers are relatively simple devices. They are easy to use and can be quickly configured to meet specific audio mixing needs. This makes them ideal for users who are new to audio mixing and who want a straightforward and user-friendly device.

Additionally, PA mixing desks can be easily customised to meet the needs of the user. They can be connected to a variety of audio sources and can be configured with different types of inputs and outputs, allowing for greater flexibility in terms of the number and type of devices that can be connected to the mixer. This customizability means that users can tailor their mixer to their specific needs and preferences.

Passive mixers are typically lightweight and portable, making them ideal for musicians and audio enthusiasts who need a mixer that can be easily transported and set up. They are great for use in a variety of settings, including live performances, recording studios and home recording environments.

PA mixers are also very affordable. They are typically less expensive than active mixers, which have built-in amplifiers. This makes them a great option for those who want a high-quality mixer without breaking the bank. With unpowered PA mixers, users can achieve great sound mixing results without spending too much money on expensive equipment. Additionally, passive mixers can be purchased in a variety of configurations and sizes, making it easy for users to find a mixer that fits their budget.