Our Stage Lighting dimmers for hire are used to increase or decrease voltage to a dimmable lighting fixture in order to adjust its intensity. Typically used with incandescent halogen or specific kinds of fluorescent fixtures, dimmers give you the flexibility to set the mood and/or focus attention on a specific section of the stage. By adjusting the voltage sent to the light fixture, a dimmer can turn the light on, off or anywhere in between.
How Much Power Does Your Dimmer Need?
While portable and distributed dimming generally will work with a 20 amp circuit, most light-dimming packs will need much more. Here’s how you can do the math:
20 amp circuits equate to 2400 watts of power. That means for every 600 watts you have, you need 5 amps. A 12-channel, 1200-watt-per-channel dimmer will need 120 amps to power it all. Once you get into larger dimming set-ups, an electrician MUST be involved to ensure proper electrical distribution. Unless you are a licensed electrician, please do not take this role on yourselves.
Four Styles of Dimmer Packs
Dimming Switch
A dimmable switch is dimming in its simplest form. If you have a super small lighting rig (maybe 4-8 lights) and this is all you can afford, it is a great affordable alternative.
Your lighting console can’t control these dimmers, so you have to dim lighting manually. These lighting dimmers also have inferior filtering. They are designed to fit into a small electrical box, so the “choke” or “filter” that helps screen out noise is also very small. That can often result in noise problems for your sound system and even your video system.
Portable/Distributed Dimmers
Portable dimmer packs consist of several independent dimmers packaged into one chassis. The number of channels per pack can be as low as 4 and as high as 24. Four-channel packs, like the Quad Pro-Dim 10, are very popular since they typically can plug into a 20-amp circuit, which is the standard for newer commercial building wiring. Older buildings, like churches, often have 15 amp circuits, so you need to check your wiring and circuit breaker panel first before you decide on which dimmer pack to order. For smaller venues where dedicated 20 amp circuits are readily available or for smaller portable setups, portable stage dimmers like the Pro Dim 2.5m Single Channel Dimmer are much better suited.
You can control 4 lights independently, with load power for each light up to 600W. That means a 500W Par Can is perfect to use with this type of dimmer. If you plug in a 500W Par into each of the 4 channels, the total load is 2000W. Since each 20A circuit can supply 2400 Watts, the total load is under the total supply of the 20A circuit, even with all four fixtures at full power.
With portable or distributed dimming, the power is already near the light fixtures, so wiring the fixtures to the dimmer pack is easy. You can plug the fixtures into the dimmer or use a short extension cord. With the dimmer near the fixtures, you only need to run a heavy-duty cable from your 20A outlet to the lighting dimmer pack. Now you need something to control the dimmer pack. Newer portable dimmers are generally DMX controlled, so if you address your standard portable dimmer to DMX address 1, it will receive DMX and control intensities for channels 1-4.
Portable and distributed dimmers come in a variety of shapes, sizes and price points. A variety of manufacturers make 4-channel dimmer packs, such as American DJ’s DP-DMX-20L, which can hang from your lighting pipe with a standard lighting clamp. A sleeker, more elegant solution is the ETC Smartbar 2, giving you the same function in a bar-style solution that you can also mount your lights to if you choose.
Dimmer Packs
When building a new or retrofitting an existing building, people prefer a cleaner look without portable or distributed dimmers hanging throughout the room. In this case, instead of distributing the power to where the lights and dimmers will hang, we bring all of the power into one central location where dimmers are installed and then distribute the controlled power to their final destinations.
The first option that allows us to do this is a simple dimmer pack, typically rack or wall-mounted. The packs often come in 6 or 12-channel versions and can range on how much power they offer per channel. For example, the ETC Smartpack SL1210-W offers 12 channels of dimming per pack with 1200 watts per channel.
Other models, like the Zero 88 Betapack DMX, might offer 6 channels of 2400 watts per channel, and others up to 12 channels of 2400 watts per channel. You would then build a rack of dimmer packs or install a wall-mount version to give you the number of dimmable channels you need and then distribute the power from the packs to your final fixture destination.
Dimmer Racks
In larger installations, needing anywhere from 48 channels and up, you will often get into much larger dimmer racks, which offer much more distribution, power, and flexibility. Just like our other dimmer options, they provide varying amounts of power distributed to lighting fixtures for dimmable operation (typically either 1200 or 2400 watts per channel). Unlike our other options, their dimmer modules, generally in pairs of channels, are swappable, giving some flexibility in what you can provide power-wise. You can also replace dimmer modules with relay modules, giving you the ability to turn things on and off without the danger of browning them out by feeding them a partial voltage.