Continuing in our series of videos about subwoofer setup, Axiom Engineer Andrew Welker gives us an idea of what you need to know about subwoofer connections. Ā It can be confusing – XLR, Line Level, RCA . . . what’s the right one to use?
Andrew Ā Welker: Ā Today we’re going to talk a little bit about connecting a subwoofer to a receiver. Ā Connecting a subwoofer is not very difficult, particularly as most home theater receivers now have dedicated Subwoofer Outputs on them. Ā The first thing that I want to mention is that before you make any connections it’s a good idea to make sure that the power is off to theĀ receiverĀ and the subwoofer. Ā You’re not necessarily going to damage anything, but it can cause some startling bangs and noises if things are not right. Log in
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Q. Some expensive A/V preamp-processors and power amplifiers offer ābalanced connections.ā And the new Axiom EP600 and EP500 subs also have them. What are they, and are āunbalancedā connections inferior to balanced? What would I gain in performance using balanced cable? ā J.C.
Used almost universally in the world of recording studios and professional broadcasters, balanced cable use a three-wire cable fitted with very secure and solid āXLRā connectors (sometimes called āCannonā connectors). The three-wire balanced configuration is composed of an outer shield surrounding two out-of-phase inner wires that carry the positive and negative portions of the signal. This enables running very long cables–hundreds of feet if necessary– between amplifiers and preamps or between microphones and a mixing console without picking up hum or interference and without significant signal loss. Log in
Continue reading What are “balanced connections” and the benefits of balanced cable? »