HPF + HPF

#41
@sears Your power amp has a selectable filter on it, 30 or 50hz, I use a different amp from the same company and usually prefer the filter at 50. But just an FYI, you don't need to buy anything to experiment with high pass filtering with your set-up.
 
#42
sears said:
What about running HPFs in series? I play a 4-string P. A PLX with its 30Hz filter engaged through a couple of Acmes. Sometimes people tell me they can't hear ME. I do get compliments on my "thick" sound but some people can't hear it.

What if I ran an HPF at 40Hz before the preamp? (an Ashly SC40 with a low shelf.) Or even another frequency depending on how it sounded right then and there? That (presumably higher-pitched) HPF would necessarily happen before the built-in filter in the power amp.

Does anybody do what I'm talking about, or would two HPFs be redundant, or would you want to run the higher HPF last anyway and my plan is backwards?
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It's almost a little ironic that you use Acme cabs, which are designed to reach super low, yet want to use a HPF to take out the deep lows, but I would tend to agree with your assessment. I find that having a lot of very deep lows can create problems in certain rooms, certain mixes, and with certain sound people who don't take the extra deep lows coming off the stage into account in their mix.
 
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#43
R Baer said:
It's almost a little ironic that you use Acme cabs, which are designed to reach super low, and then wan to use a HPF to take out the deep lows, but I would tend to agree with your assessment. I find that having a lot of very deep lows can create problems in certain rooms, certain mixes, and with certain sound people who don't take the extra deep lows coming off the stage into account in their mix.
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I always find a bit of irony on that topic, especially when some of the modern "unfettered low end" cabinets get discussed.
 
#45
On fDeck's website there is a comment that the HPF should be set to the same frequency as the port frequency (on your cab). I emailed GK about my cab, and they replied quickly that it's 43 Hz. So I've had to fudge a little bit as the dial markings are not really pin-point accurate. I think I've got mine set at around 50 Hz which is probably as close as I'll get it. Sounds great, and as mentioned above the crowd who stands around the room in back say my sound is a lot cleaner. I'm not hearing that on-stage but if they are hearing it something good is happening.
 
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