Alternatively, I believe some multi effects, (such as boss GT series) have stereo out, so put the left out to one amp, and right out to the other. Passive crossovers built into speakers' cabinets are used in compact music systems. In professional audio applications, two amplifiers are … This is the part EVERYONE gets wrong. Bought a 30 watt 112 tube amp a few months ago that sounds killer. Getting to my guitar "starting point"--Two amps, Jcm2000 and a Randall 1086, two cabs each with a 57 and a LDC very close on the speaker, phased correctly. Important note: You can't connect both amps to that cab without blowing something up. The trick to it is that you need to put a stereo signal splitter in the chain, just before the amps. Please Re-Read Step 2 . Quick question for ya. There are some cabinets that support bi-amping, which is using two amps with one cabinet. Run the cable from this to the EFFECTS RETURN on the slave amp. This technique allows you the ability to use two different-sounding amplifiers to create a fuller guitar tone. Amp (-) to Amp (-) These connections is what Physically ‘bridges’ the amps together! DO NOT attempt to use any 1/4" port labeled "speaker" or "ext" or "extension" to connect the two amps. Amp (+) to Sub (-) Step 2.5. Kurt began playing guitar at the age of nine in Kalamazoo, Michigan. The splitter will take the line in from your guitar, but provide two line outs, one to each amp. The ribbon catches the rooms vibe from the figure 8 pattern. In a push-pull amp the guitar audio signals on the two phase inverter plates are 180 degrees out of phase with one another so mixing the two signals together nullifies the signal, kind of like mixing matter and antimatter. Your cabinet has two 1/4" inputs wired together in parallel so you can daisy-chain additional cabinets. Your cabinet does not. 2 - because of differences in the grounding paths for each amp, you'll probably get a ground loop hum For this reason the very best way to drive multiple amps is with a purpose designed box that will usually be active (powered) to boost the signal and have at least one transformer for complete isolation between the two or more amps. Note that the information presented in this article is for reference purposes only. Step 3. Then a Ribbon about 6 feet away above and pointed down. Buy a Y-cable with ¼-inch male end and two ¼-inch female ends. The snubber also aids amplifier stability. It is completely safe to do this. What you are doing with this method is using the preamp of the master to drive the power amps and speakers of both amps. You need two cabinets. Connect 12-Gauge Speaker Wire from the Negative (-) Speaker Output on the Master amp to the Negative (-) Speaker Output on the Slave Amplifier. 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