Topic: Lunatec V2 HPF

[ts]

Sometimes when using my AKG CK69 short guns paired with the JWmod 460's>V2, I get too much bass. Which HPF setting would be better, 1 or 2? Thanks.

[drewloo]

2 is the lower roll-off, I'd try that first. 

http://www.taperssection.com/reference/pdf/Manual_Grace_V2.pdf

The manual also has detailed info on the internal jumpers that affect the high-pass filters.

[StuStu]

It seems odd to me that you'd get too much bass from shotguns regardless of the pre used...no? Sorry if I'm being too stereotypical.  

[ts]

It seems odd to me that you'd get too much bass from shotguns regardless of the pre used...no? Sorry if I'm being too stereotypical.

True. I guess it could be a case of the tube boomies. HPF2 should tame it a little. Pointing at the inside edge of the stacks instead of the outside usually helps to.

[Shawn]

if it were me I'd prefer to do the roll-off in post. Could it also be that there is some phase cancellation. I'm forgetting specifics but isn't it likely that when running 4 mics you can get phase cancellation that will affect the higher frequencies more so than the lower frequencies, which would in effect make the final product tend to sound more bass heavy. I could be totally wrong about that though.

[page]

if it were me I'd prefer to do the roll-off in post. Could it also be that there is some phase cancellation. I'm forgetting specifics but isn't it likely that when running 4 mics you can get phase cancellation that will affect the higher frequencies more so than the lower frequencies, which would in effect make the final product tend to sound more bass heavy. I could be totally wrong about that though.

I think thats factually accurate; you're more likely to encounter HF phase cancelation then LF phase cancelation when doing mixes.

As for the HPF. The extra bass could be deep bass, or it could be a resonance. I've noticed in a couple of rooms that there is a resonance that compliments/amplifies a certain cycle range (125hz in my most recent example). So in that instance, HPF isn't going to do as much as just EQing it later where you can do surgical cuts; you'll loose the deeper bass which would sound relatively normal prior to the HPF if it's truely a resonance problem. The only resonance I've found worth trying to HPF away during the show is the stuff that's under 40-50hz which is mostly reverb as stuff bounces around the room or trash from the PA system and I'd touch as little above that mark as possible. I've found to really use HPF in the field well, you have to know a series of factors before hand (what does the room sound like, how good are the sound personell who will probably be running it, what does your gear sound like down there, etc).

[SmokinJoe]

When I had Nak guns, sometimes the bass was huge, more so than any other mic I've owned.  Never made sense to me either, but it's real.

And yes, assuming the V2 is like V3, HPF #2 is a little and HPF #1 is more.  I don't know who's idea that was, but it seemed backwards to me.

[KenH]

And yes, assuming the V2 is like V3, HPF #2 is a little and HPF #1 is more.  I don't know who's idea that was, but it seemed backwards to me.

The way I remember it is that the switch in the 2 position is down (low), while the switch in the 1 position is up (high), which corresponds to the HPF cutoff frequency.  2 is lower, 1 is a higher cutoff freq...

[Jesse Hurlburt]

I agree 100% with Page.  It's important to know if its the room resonance or just crazy bass.