Bi amp and bias issue
Here is why, for the 1ohm resistor to create even the slightest HF filter in the highs on these Maggies. The Maggie’s panel themselves would have to have a parallel capacitance from pos to ground as seen by the 1ohm resistor of 10uF or higher which no amp could handle. Like I said beep23, just use the $6.00 50watt 1ohm resistor to make the Rogue stable when in UL mode. https://www.newark.com/vishay/rh0501r000fe02/wirewound-resistor-1-ohm-50w-1/dp/41K9144 https://ibb.co/HT8w2jz Cheers George |
That’s your prerogative, Yes (min resistance) that is normally the way for full range, and when the bass is involved, for better damping factor. But because it’s just the mids and treble, it won’t make any difference, and will be beneficial to the stability of the amp. As the amp will be a little less stable in UL mode compared to Triode, and goes into semi oscillation when it sees that inductor across it’s output and certain frequencies. And the 50w 1ohm series resistor should cure that without any side effects. beep23 Planers and ESL’s are known for their naturalness through the mids and highs, don’t "sterilize" them up with using active electronic xovers, keep the passive to feed them. Cheers George |
I tried using stock crossover using krell for bass and rogue for mid and tweeter and it works but only when i use triode mode on rogue if i switch to ultra linear when I try to bias the meter on rogue oscillates. If this diagram is correct, there is on the mid/hf panel a .387H choke across the amps speaker terminals, it will seem like a nasty load at certain frequencies, more so in UL than Triode mode https://ibb.co/h7Rw0N2 I would try for a couple of dollars, a big 20-50w 1ohm resistor in series between the Rouge amps + terminal and the + input to the mid tweeter panel terminal, (at the speaker end) this should cure the problem. (may lower the mid/hi level just a touch) https://www.newark.com/vishay/rh0501r000fe02/wirewound-resistor-1-ohm-50w-1/dp/41K9144 Cheers George |
