antony71p
Member
Here at Fractal's message board -> http://forum.fractalaudio.com/ultra...kr-res-freq-intelligent-use-3.html#post450105
the diagram doesnt have exact details .......
Here at Fractal's message board -> http://forum.fractalaudio.com/ultra...kr-res-freq-intelligent-use-3.html#post450105
Are these cabs wired parallel or in series?
Beside that - the atomic mono block is a tube amp, which will "feel" your speaker impedance distraction (unless you would use it with a passive crossover filter network, as they did in their reactor series "tube powered" active atomic FR cabs), so you don't need the power amp simulation from your axefx.
Have fun!
Cheers
Paco
EDIT: The MB50 has dual speaker outputs, according to their manual it's 8 ohm seach, since there is no 4ohm version of a T75 I would connect each single speaker to a separate output jack to preserve the amp from possible damage caused of wrong speaker loads (the axefx can simulate these "effects" of a falsely or wanted under- or overload in it's poweramp simulation without any possibility of damage.....that's why tube amps are already overrated:mrgreen:lol)
The mb50 should be used with power amp sims on. It is an FRFR tube amp.
But what are the implications of the latest beta firmware (12.04) for the Low Resonance value, when using a real speaker?
Not knowing the DC resistance of the speakers I use, I can't use the formula in the OP.
Does increasing the Low Res value (not frequency) work out the same as with IRs in 12.04?
The only big thing that makes the MB50 more flat responce in the Atomic FR was the passive crossover network, which dampend the influences from the speaker. By definition the MB50 is a FullRange-Amp (btw. most tube amps are full range, this depends on the frequency response of your output tranformer.....), but it's not "flat response" by design.
There would be various possibilities to get more of a FRFR-tube amp, by increasing the damping factor or compensate the influences/interaction from the speaker load. The best possibility is, if you choose the screen of your output tube as a 2nd grid - this could be done if your output transformer has a 50% tap on his primary windings between plate and center tap, which loop back the signal in opposite phase to the plate of the output tube. Therefore this "negative feedback loop" also compensates the infulences from the speaker influences, which results in an almost constant power output over the whole frequency spectrum. This special circuit needs a special output transformer and is called "Ultra-Linear Circuit". It's not in a MB50.....
Sorry
But when I enter in 20 times Log10 times 10 I get a sum of 13.01, not 20.
60 divided by 6 = 10.
In CALC (scientific mode) enter 10, then press Log10. Result = 1.
* means multiply.
So 20 x 1 = 20.
20 divided by 2.4 = ...
20 times Log10 times (60/6), no?
But when I enter in 20 times Log10 times 10 I get a sum of 13.01, not 20.
So how do I use my calculator to enter in this formula?
So, what numbers here am I actually supposed to be looking at and how does it fit into the formula? I'm sorry if this is a stupid question, but you're talking to a guy here that flunked algebra (even though I aced geometry!!). Just a bit over my head here with all the jargon and such. Any help is appreciated, as I'm one that is struggling with getting my AFX to do the trick for me and trying all I can from the forum here.
Also, if I choose to run it to an FRFR cab... how do I set things then??
Thanks so much!!