HPF Tips?

Discussion in 'Effects [BG]' started by CallMeAl, Jun 23, 2019.

  1. CallMeAl


    Dec 2, 2016
    Ithaca Ny
    Hi all!

    Was about to post this in the hpf megathread, but thought I might get more help in my own thread. (If there is a thread already please LMK; it was hard to find anything on hpf that was NOT the megathread :laugh:)

    I just ordered my own Broughton always-on HPF, and anxiously awaiting its arrival. I am looking for some general guidance on operation, "hpf 101" if you will. I'm not only a hpf noob, but totally green to anything in between my bass and amp that's not an instrument cable... so be gentle :smug:

    Where do people generally set theirs? I've read "use your ears," and that makes sense to me.... do I make adjustments for each room I'm in? e.g. We play some real echo chambers, winery dining rooms with stone, glass, wood, high ceilings, and very little fabric. Then there are the bars where a lot of sound gets soaked up, and we tend to play louder. Then there's outdoors. Different settings for each venue? Does stage/total volume make a difference?

    Any strong feelings on putting it before the amp's input VS using the FX loop?

    Anything I'm forgetting, or should be aware of?

    I'm playing a P bass, rounds, Fender Rumble 100 v3 combo. I have recently learned the Rumble has a built in fixed 2nd order hpf.... not sure how that comes into play; but I'm pretty sure the Broughton will allow me to be more aggressive if needed.


    Oh yeah, pic, or I didn't order it ;)
    Last edited: Jun 24, 2019
    butterfingers1 likes this.
  2. BossOnBass


    Aug 11, 2012
    Houston, TX
    The Rumble V3 will benefit from some HPF especially if u play with the vintage button on. I dial my broughton HPF on about 25% for the rumble with the vintage option.
  3. CallMeAl


    Dec 2, 2016
    Ithaca Ny
    I love the vintage button, but notice it does add to the boom. Looking forward to getting that back!
    Stumbo likes this.
  4. OP,
    There are no settings on the HPF so if you need to, go to the picture of the High Pass Filter ($95 model) to understand where your settings are. I've got mine set around 10:30 which should be about 30Hz. I had my 'revelation' earlier this year when even at low volumes I could here the difference of tone without the rumble (which I never thought I was creating).
    butterfingers1, Stumbo and CallMeAl like this.
  5. NKBassman

    NKBassman Lvl 10 Nerd Supporting Member

    Jun 16, 2009
    Winnipeg, MB, Canada
    There's no one magic setting that will work for everything when trying to dial in a HPF. My suggestion is to always start with it all the way down (20-ish Hz or whatever), and then dial it up until you can start to hear it take effect, then back it off a little from there. The tendency (for me anyway), is usually to dial it up until you hear it start to cut low end and then leave it at that. You may initially think that everything sounds cleaner, but IMO once you start cutting audible frequencies you're stealing too much energy from the signal, and it tends to make things a little dull and lifeless. If you're trying to fix a boomy stage or room, you may not have a choice, but for regular use err on the side of less-is-more. It's still working by filtering out sub frequencies and inaudible garbage, even if you can't tell. It's definitely a set-by-ear and by-room situation.

    I take it from your self-described pedal-n00b status that you aren't using any other pedals, so that at least takes care of the question of where to put the HPF in the chain. :p

    Do you ever play gigs with the bass going through a PA? Or mostly just relying on your amp to cover the room? If the former, you may want to think about whether you're putting the HPF before or after the DI feed to the mixing board. Do you want to cut all that low end out before it gets to the mixer, or only for yourself on stage? My typical rule of thumb in that situation would be to give the soundguy as much as possible to work with, ie. minimal HPF on the signal to the board.
  6. JonnyAngle

    JonnyAngle Dropping Acid Pedal Etching .com Supporting Member Commercial User

    Nov 24, 2008
    Maple Grove, MN
    Start at like 60hz and call it good
  7. Drop1


    Mar 28, 2019
    Lowest usable frequency on the E string is about 40hz. Everything below that is just color/rumble.
    You can double that and remove the first harmonic so 80 hz works as well.

    This will sound backwards. If you drop tune, you can actually set the hpf higher without damaging the sound. When I drop d I hpf at closer to 60hz.
    butterfingers1 and CallMeAl like this.
  8. Mushroo

    Mushroo Guest

    Apr 2, 2007
    80hz for me. YMMV. Good luck! :)
    Zbysek and alanloomis1980 like this.
  9. Spent


    May 15, 2011
    Upstate NY
    I typically start around 40-60. We use a 100hz hpf for everything on our board (including keys) which we all go through, but I disable it on my channel and use the Broughton (excellent choice BTW). We also go lower for the kick, but I forgot the setting. I suggest playing with it to get it where you want it, you should be able to clearly hear when you’ve cut out too much low end. It could also need tweaking depending on the venue.
    Zbysek, Stumbo, Mushroo and 1 other person like this.
  10. CallMeAl


    Dec 2, 2016
    Ithaca Ny
    We put the bass in the PA for the bar and outdoor gigs.

    I don't know if I have an option as to sending the hpf through the line out- the rumble amps send everything out the line out, Including fx loop, EQ, even the master volume.

    We do our own PA so BL is the sound guy!

    All @Stumbo ! :)

    This is kinda what I thought, since IME some rooms are fine and some are... not. But I see some responders giving me specific numbers, so I thought maybe it could be personal preference, or rig-specific.
  11. Spent


    May 15, 2011
    Upstate NY
    It may or may not need adjustment and if it does, probably not much. Every venue is different.
    alanloomis1980 likes this.
  12. Drop1


    Mar 28, 2019
    I gave specific numbers as a reference. For instance, open E has no useful material below 40hz so theres no reason to go any lower unless your drop tuning. No sense in asking your cab to play lower when theres nothing there but noise and rumble.
    butterfingers1, CallMeAl and Rilence like this.
  13. Nighttrain1127

    Nighttrain1127 Supporting Member

    Nov 27, 2004
    Near Worcester MA
    You can put the HPF in your effects loop and it will keep all that junk that you don't want out of everything. The trick is as mentioned above you will hear when it starts working So you can leave it there or back it off a bit to taste.
    alanloomis1980 likes this.
  14. HPF gives you options with your bass knob. You can even boost while not booming.
  15. CallMeAl


    Dec 2, 2016
    Ithaca Ny
    I'll do whatever sounds best, but I kinda like the idea of having it tucked away behind the amp in the FX loop.
    butterfingers1 and NKBassman like this.
  16. NKBassman

    NKBassman Lvl 10 Nerd Supporting Member

    Jun 16, 2009
    Winnipeg, MB, Canada
    I do like boosting the bass before a HPF. Gives you that nice fat low end without all the mud underneath it.
    butterfingers1, Zbysek and CallMeAl like this.
  17. Subscribed. I'm very interested in this.
    alanloomis1980 likes this.
  18. Drop1


    Mar 28, 2019

    First pic is open E. Everything below 40 hz is optional. Lots of cabs dott even play that low. No sense in ever setting the hpf below 40hz if you are tuned to E. Raising it above 40hz can be useful.
    Pushing up to 80hz can really tighten things up in a bass heavy room. Tuned to E I'm always hunting the sweet spot between 40hz and 80hz.


    Second pic is open B. Most of the time I'll start at about 60 hz and remove some fundamental. Most cabs are pretty useless that low anyway (B's fundamental is about 30hz) but somewhere between 30hz and 60 is what I look for when playin a 5 string.
    There are just starting points based solely on tunings.
  19. After reading yesterday, I decided to order the Broughton High Pass Filter. (the 95$ one with range knob and on/off switch) I can't wait to give it a try!
  20. CallMeAl


    Dec 2, 2016
    Ithaca Ny
    Nice! Still waiting on mine, I feel like a kid pre-christmas :woot:
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