JBL E-120

Re: JBL E-120

Postby hogan » Wed May 12, 2010 3:00 pm

It should be noted that a single speaker cab can be out of phase w/ other cabs in an array, i.e. other bandmembers rigs. That further demonstrates what Brad is saying. You need more than one speaker to be "out of phase". The good times start when deciding which dude in your band is the culprit.
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Re: JBL E-120

Postby ugly rumor » Wed May 12, 2010 6:17 pm

Actually Hogan, it would only be that way if everyone used the same amplifier. Different amps each pushing speakers in phase with the other speakers that amp is also pushing would have no effect on any other amp and whatever it is doing. That's a convoluted way to say that each individual amp is responsible for its own speakers, and doesn't have to be in phase with the speakers from other amps. Each exists in its own universe. That step is for each amp alone, in other words, to paraphrase.

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Re: JBL E-120

Postby JonnyBoy » Wed May 12, 2010 10:48 pm

When I was building my buffer there was a circuit to invert the signal if that was something I wanted done. Then I found it to be in almost all the schematics as an optional circuit, sometimes it was written in as a part of it without option. In terms of pedal building, that seems to be a common thing to happen.

Ugly rumor- I now see if I want to use that speaker I would have to do a parallel series hookup as a three speaker setup. I really don't need 3 speakers EVER with the JBL E 120 style speakers I use. 2 of them are plenty ear buzzing. I wanted to use a 150 watt Peavey Black Widdow JBL styled 4 ohm speaker as a lower volume rig. clipping sounds so nice on a 2x12 pushing some watts. I have yet to see what this speaker will do at lower volumes.

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