Thanks for the reply, but It doesn't answer my question. I wanted to know what the HPF parameters are.
Does it roll off at 50hz? 40? 30? 12db per octave, 24?
Hopefully Andy can provide some actual data.
You are right though, I don't have any chance of having a problem because I am pretty conservative. But I would still like to know what the worst case scenario could be.
I don't know why you would care, but from previous discussion with Andy, with the hi pass/boost button off, the rolloff is at around 36hz or so if I remember correctly, at around 12db per octave. With the hi pass/lo boost engaged, the hi passing is lowered to just above 30hz, with a slight boost of those additiona lower frequencies to compensate for how the ear hears bass versus midrange.
Again, there is absolutely NO reason to bother with an external hi pass on the Genz heads unless you have a totally crappy cab. The need for external hi passing has been really blown out of proportion on this site (as has 'upper midrange beaming', but that is another discussion!). Most heads on the market are very well controlled down low, and most cabs can take pretty much anything you can give them (assuming you don't crank the bass control massively, etc.... which is typically a noob mistake). There ARE some heads that can get you into trouble, due to their very low hi passing/lack of low end sculpting. For example, my Glockenklang pumps out freq's below 30hz, as does the original iAmp800, the Mesa M6/M9, the older SWR heads (those things REALLY need external hi pass) and some all tube amps.
The Genz heads just take 'low end control' a little farther than most heads, including a true hi pass circuit that is set to not only eliminate sub bass, but also 'deep bass', both for tonal, efficiency and I guess safety reasons.
The Shuttle Max heads are VERY cool in that the hi pass/boost is variable. Wonderful control of the low end with that one. I personally found the 'all or nothing' lo boost/hi pass on the Shuttle 9 a bit too much of a good thing, although the slight revoicing in the Shuttle 9.2 worked a bit better (i.e., not as extreme).
I'm sure Andy will give you the exact scoop on the nature of the hi passing, but IMO you are asking a question that doesn't need an answer
