It’s a great way to know for 100% sure what kind of speakers you’re dealing with to avoid problems with your 4 channel amp.Ĭar stereo and home speaker speakers are very similar except for the impedance rating they use. Shown: An example of how to measure speaker impedance (Ohms) with a multimeter. Because these kinds of amps can’t handle a 2 ohm load, it’s a bit harder and needs a different approach. System 3: 2 speakers on each front channel (parallel wiring) wired with extra parts for 4 ohms per channel + 1 subwoofer wired for 4 ohms minimum. ![]() 4 channel amps that handle 2 ohms bridged are less common but they are out there. System 2: 2 speakers in parallel to each front channel = 2 Ohms x 2 + 1 subwoofer wired for 4 or 2 Ohms on the rear channels bridged for more power. This is the first and best choice for most modern 4 channel amps. System 1: 2 speakers (parallel wiring) to each front channel = 2 Ohms x 2 + 1 subwoofer wired for 4 Ohms on the rear channels bridged for more power. I’ll describe 3 main system setups which I’ll cover in detail. Here are the speaker wiring and speaker (Ohms) loads possible for nearly all amps you’ll run across. If so, you’ll be glad to know there’s a work-around that I’ve come up with that will let you wire your 4 speakers up without damaging your amp. Maybe you’ve got an older amp that’s been sitting around unused. #3 is less common but it’s one you’ll run across.
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