Clean Power for Pure Sound
The job of a power amplifier is to deliver clean power to your speakers. Since most speakers are passive (no internal amp), you’ll need to include an amplifier (or receiver with enough power) to design your home theater, media room, outdoor or whole house audio system. One or more power amplifiers can have huge effect on sound quality. Adding an amp that does not have the juice to power your speakers will result in a lackluster audio or worse no performance at all. The type and size of amp you choose will depend on how complex your system is. A powerful 2-channel amp is great for music systems, outdoor audio, or as a dedicated power amp for home theaters. If you’re planning on distributing audio to multiple rooms, think about a multi-channel amp. Multi-channel amps incorporate high-efficiency, space-saving digital technology and eliminate the hassle of wiring up a bunch of two-channel amps. These amps also reduce the number of components that must be placed in cabinets, and drive down your amplifier costs by as much as a third over multiple two-channel models. OSD carries mono sub amplifiers which can be used to power passive indoor or outdoor subwoofers.
More Power! Enter the Bridgeable Amp
You’ll see the term bridging a lot when you read about amps. A bridgeable amp is when two separate channels are combined into one channel. Why would you do that? To double the power output of course! Say you have an amp that is 100 Watts x 2 channels. If you combine or “bridge” the channels, you’ll get an amp that has 200 Watts x 1 without the risk of overloading the amp. There is a small tradeoff, however. Now you have only one output (speaker A output but not Speaker B output). In addition, the speaker load must be at 8 ohm. Typically, we recommend adding a second amplifier and bridging both in order to double the power per channel. We call this “addition by addition” versus “addition by subtraction.”