My main rig:
My other rig (ART SGX Nightbass SE is gone. I think I still have the HUSH unit, but I'm not sure where it is.):
Yes, I had all that stuff
before I started working at Carvin.
bigbeefdog said:
If you order that, one thing you MUST know is that you cannot run it in bridged mode with those two cabs in parallel.
Correct. The R600 and R1000 can run as low as 2 ohms per channel or 4 ohms bridged. Nothing unusual about that. You should never run any amplifier at an impedece lower than it's rated. The RL210T and RL115 are both 4-ohm cabs. If you daisy chain them together, that's a 2-ohm load. You can't bridge those amps into 2 ohms.
bigbeefdog said:
It would HAVE to be bi-amped when stacked.
Not necessarily. You should use the two seperate High and Low outputs, but these can be run in either bi-amp or full range. I actually prefer that particular setup in full range mode.
The bridge switch should be off when running these two cabs together. If you run one cab on each side of the amp, you get 350 watts per cab, for a total of 700w, whether biamped or full range. If you daisy chain the cabs and run them both off one side of the amp, you get 500 watts. I don't really see any reason to do that since it's less power than you get the other way. If you run either
one of these 4-ohm cabs, then you can bridge the amp into it for 1000 watts. That's more power than either of those cabs is rated at, but it shouldn't hurt if you're not pushing the amp into clipping. But it will probably be as loud if not louder with two cabs and 700 watts than one cab and 1000 watts.
bigbeefdog said:
Bridged mode minimum impedance for that head is 4 ohms, and if it sees anything less, it will get hot and go into thermal-protect mode QUICKLY.
As it should. An amplifier's protection circuits are designed to protect it from damage. They shut it down before it can burn itself up.
bigbeefdog said:
In my experience (my own gear and that of acquaintances), the RedLine heads are VERY intolerant of impedance loads below the stated ratings. I'm reaching a little here, but I suspect this has something to do with the reliability issues you mentioned. When properly loaded, mine would work just fine and run cool - but if the connected load was too low, the amp would heat up and lose power rapidly.
I was fortunate to realize what was happening before I smoked the head; otherwise, I would have been another "poor reliability" story....
I don't know of any amp that likes to be run below it's rated impedence. Expecting it to do so is unrealistic. Sometimes you'll get away with it. But when you start pushing the amp, it'll most likely shut down.