Add a resistor if needed, but adding resistance will be detrimental to the high frequency response. I like accuracy
Sorry, no it won't.Cheers George
Bi amp and bias issue
Hello I need help with biamping my magnepan 3.5r I have a krell Kav 2250 25.7 gain 2.53vrms input sensitivity for bass and rogue audio m150 29gain 1vrms input sensitivity.
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.
I contacted rogue they said its the tweeter load the amp is not designed to play just the tweeters but i tried running just the tweeter with it and not turn on the krell and it does not oscillate .
I replaced the 12ax7 driver tubes on the rogue with 12au7 and that stopped the oscillation but rogue said they dont know how it will affect the amp in long term.
Another problem im having is that the rogue plays alot louder than the krell
also if anyone is curious the rogues sound better playing the speakers than the krell rogues are 150 watts into 4ohm and krell are 500w the bass sounds better with most music including pop techno hip hop with the rogues the krell sounds better when theres alot of energy lots of fast bass sounds where the rogues dont have as much grip during those passages.
the rest of the system is denon dl103r mc /jensen mc transformer/rega p3 /hagerman trumpet phono/
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.
I contacted rogue they said its the tweeter load the amp is not designed to play just the tweeters but i tried running just the tweeter with it and not turn on the krell and it does not oscillate .
I replaced the 12ax7 driver tubes on the rogue with 12au7 and that stopped the oscillation but rogue said they dont know how it will affect the amp in long term.
Another problem im having is that the rogue plays alot louder than the krell
also if anyone is curious the rogues sound better playing the speakers than the krell rogues are 150 watts into 4ohm and krell are 500w the bass sounds better with most music including pop techno hip hop with the rogues the krell sounds better when theres alot of energy lots of fast bass sounds where the rogues dont have as much grip during those passages.
the rest of the system is denon dl103r mc /jensen mc transformer/rega p3 /hagerman trumpet phono/
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- 16 posts total
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 |
Thank you all for your suggestions I went ahead and purchase the 50w1ohm resistor because they are cheap and wont hurt to try it out. Georgehifi you mentioned to install these “Rouge amps + terminal and the + input to the mid tweeter panel terminal” is that on the external crossover or bypass external crossover and directly on the magnepan mid tweeter input and if it goes directly on the mid and tweeter does that mean the mid and tweeter will not have a high pass filter |
- 16 posts total