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High Pass Filter (HPF) and Low Pass Filter (LPF) Mega Thread

You don't need anything except your bass, and maybe an amp and cable to connect the two, if you're into that sort of thing. Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades.

In my opinion, if one is unsure of why they might need an effect or what is used for, then they most likely have no use for it. It's much better (and cheaper!) to just play and develop an ear for what you might personally want to hear, than to use your eyes and let TB conversations dictates your needs.

Whew! I was beginning to think I was the only one who was left out in the cold. ;) Never had a problem taming highs or lows via the tone knob. And major props to the NV610 which, IME, makes almost anything sound stellar.
 
PEDAL DESIGNERS PAY ATTENTION!
I've never been a pedal guy, but I could see where it would be kind of cool to be able to go from a low-fi band pass sound with a fairly up there high pass frequency to a full range signal in a live EDM type situation. Think of being able to do a drop on your bass. In fact, if I were designing this pedal, I would have two high pass frequency settings that could be switched as needed. Probably no need for an actual bypass, as you would set your first high pass to as low as you would need and the second would be more of an effect. If I were to really hot rod this pedal, I'd put a control voltage input that could be used with a sweep-able CV footpedal to manually adjust the high pass frequency of the second high pass setting, with a width knob to adjust the range of that pedals sweep and a maybe another setting to adjust the curve of that sweep from smooth sine to a stepped square with a width adjustment. I've never seen something like this and I'll never build it myself. But if someone does, I'd appreciate at least a complimentary pedal for the idea!
 
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I am definitely a ONE AMP kind of person. My Eden WT550 has crapped the bed, so right now I'm playing through a friend's head in our shared practice space. As I am about to start up a new band, I will want my own amp in the long run though. The Quilter BB800 will be available here (Germany) later this month. I may just try both that and the Mesa and see which one I think sounds better. If it's the Mesa, I might as well get the 800+ for the HPF.

Then, yeah - the 800+ is definitely the way to go in your case, IMO... Nothing against the Quilter, but the D800+ is WAY more versatile - for a "one amp person", it's a no-brainer, IMO...
 
I have a Broughton HPF on my board, as well as a HPF and LPF on the preamp at the end of my pedal chain (Broughton Studio One). I was using the stand-alone HPF first in my chain to clean up mud off the bass before it got to my compressor, but I just got a new compressor and this may not be necessary anymore.

I really like a bit of HPF used sparingly to clean up a muddy bottom end and tighten up the sound, but too much can make things sound anemic. Usually best to turn it up to a point where you just hear it starting to change the tone, and then dial it back a little.
 
You don't need anything except your bass, and maybe an amp and cable to connect the two, if you're into that sort of thing. Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades.

In my opinion, if one is unsure of why they might need an effect or what is used for, then they most likely have no use for it. It's much better (and cheaper!) to just play and develop an ear for what you might personally want to hear, than to use your eyes and let TB conversations dictates your needs.

A couple of points, if I may:

"Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades."

While this is mostly true, it's also true that boomy rooms and blown drivers have been a problem for working bassists since electric bass was first invented - so, "got by just fine" isn't exactly true...

Next - a HPF isn't really an "effect", as much as it is more of a signal management tool much like the EQ section of your amp... And as for "hearing it", you don't really hear it, but definitely experience the positive results of properly using one... Truthfully, I think you're doing your fellow bassists a disservice by trying to dissuade them from trying a bit of technology that has been well proven to work as advertised... I also "got along just fine" for over 3 decades without a HPF, but now that I've used one, you can bet that I'll continue to use it...
 
I's like to hear more about the HPF on the Subway D800+. Is it as good as or better the (flexible, practical, durable) fdeck, Broughton, sfx pedals? I don't have the Mesa info in front of me. Does it have a frequency adjustment and that's it? Is this similar to the 30Hz and 50Hz filter switches on my (former) QSC PLX amp?
 
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I's like to hear more about the HPF on the Subway D800+. Is it as good as or better the (flexible, practical, durable) fdeck, Broughton, sfx pedals? I don't have the Mesa info in front of me. Does it have a frequency adjustment and that's it? Is this similar to the 30Hz and 50Hz filter switches on my (former( QSC PLX amp?

I would say it's every bit as good as the others you mentioned, and much better than the QSC HPF - and I believe it only needs a frequency adjustment to be 100% effective due to it's place in the signal chain...
 
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A couple of points, if I may:

"Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades."

While this is mostly true, it's also true that boomy rooms and blown drivers have been a problem for working bassists since electric bass was first invented - so, "got by just fine" isn't exactly true...

Next - a HPF isn't really an "effect", as much as it is more of a signal management tool much like the EQ section of your amp... And as for "hearing it", you don't really hear it, but definitely experience the positive results of properly using one... Truthfully, I think you're doing your fellow bassists a disservice by trying to dissuade them from trying a bit of technology that has been well proven to work as advertised... I also "got along just fine" for over 3 decades without a HPF, but now that I've used one, you can bet that I'll continue to use it...
I never tried to dissuade anyone from trying anything. I merely said that they should let their needs be dictated by their ears and not by the conversations that happen in this message board. If that's a disservice, then it's one I'm happy to provide over and over again.
 
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Whew! I was beginning to think I was the only one who was left out in the cold. ;) Never had a problem taming highs or lows via the tone knob. And major props to the NV610 which, IME, makes almost anything sound stellar.

That's at least partially due to the NV610 sort of having inherent HP and LP filters built right into the design. :D I haven't felt the need for an external HPF since I bought mine in 2004. That sealed cabinet highish low cutoff frequency and the relatively shallow rolloff below that makes for nice tight bottom end without any boom or overhang.

A couple of points, if I may:

"Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades."

While this is mostly true, it's also true that boomy rooms and blown drivers have been a problem for working bassists since electric bass was first invented - so, "got by just fine" isn't exactly true...

Next - a HPF isn't really an "effect", as much as it is more of a signal management tool much like the EQ section of your amp... And as for "hearing it", you don't really hear it, but definitely experience the positive results of properly using one... Truthfully, I think you're doing your fellow bassists a disservice by trying to dissuade them from trying a bit of technology that has been well proven to work as advertised... I also "got along just fine" for over 3 decades without a HPF, but now that I've used one, you can bet that I'll continue to use it...

I was about to say pretty much exactly this. I would also add that not fully understanding what a tool like a HPF does isn't a reason to ignore it. If you're unsure of what something actually does, TB is a great resource to ask questions about it and get good answers. Of course, if once you have the information you decide that it's not something you need, fair enough.
 
I never tried to dissuade anyone from trying anything. I merely said that they should let their needs be dictated by their ears and not by the conversations that happen in this message board. If that's a disservice, then it's one I'm happy to provide over and over again.

I don't think anyone is advocating having the needs of others dictated by TB threads, but it is kind of hard to determine what your needs are if you don't have all the information.

EDIT: There are definitely people out there struggling with excessive low end who would benefit from a HPF but they aren't aware of them or don't know how they work. If you don't feel you need one after learning about them, that's fair enough. The worst outcome is that you learned something. :D

And by "you" I mean the general "you" not you specifically. :D
 
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Great thread.

Makes me wonder if I should be looking at the Subway D800+ for my next amp for the built in HPF. Was looking at the D800 or the Quilter BB800 initially...
The variable HPF in the 800+ is a great idea. But, some bass amps already have a " built in ", fixed HPF in their designs, something that I think is never talked about in their manuals, unless you look hard in the spec sheets. For example, the Shuttle line of amp heads have a built in HPF. I for get where exactly it is set, but using an outboard HPF, like the Fdeck, may be counter-intuitive, or not with these heads. Perhaps Agedhorse can comment on this ?
 
I don't think anyone is advocating having the needs of others dictated by TB threads, but it is kind of hard to determine what your needs are if you don't have all the information.
No doubt. What's getting lost here is the original post that I replied to, in which a member asked *if* he needed an HPF and and LPF and *what* they even are, to which I basically replied that he/she could do without them as many have/are, and over time figure out what they need based on their personal experience. Again, if that's wrong then I don't want to be right.

Moving on now, if you all have advice for the person that I replied to, feel free to give it to them. I have an L+HPF and posted about the how and why of my use of it. I hope that it's helpful to both the OP, and to any others who are thinking about whether or not they need such a device in their rig.
 
You don't need anything except your bass, and maybe an amp and cable to connect the two, if you're into that sort of thing. Myself and a lot of other people - famous professionals, even - got by just fine without anything more than those three items for decades.
True that. And in quite a few of those cases, say an SVT rig, there already was a highly functional inherent HPF and LPF built in. And in a great number of other cases, that got taken care of at the FOH and/or monitor mixes. So, as you alluded to, never a bad idea to understand how the sausage is already being made before you change the recipe.
 
At our church, we play a lot of the Hillsong songs and similar. They usually start quietly with me playing just the turns for the intro, 1st verse and 1st chorus. I found setting my Broughton HPF to about 45hz's really quieted the snare drum rattle and cleaned up any flat wound mud. It's the best thing on my pedalboard just behind my cali76 CB.
 
Great thread.

Makes me wonder if I should be looking at the Subway D800+ for my next amp for the built in HPF. Was looking at the D800 or the Quilter BB800 initially...

I am definitely a ONE AMP kind of person. My Eden WT550 has crapped the bed, so right now I'm playing through a friend's head in our shared practice space. As I am about to start up a new band, I will want my own amp in the long run though. The Quilter BB800 will be available here (Germany) later this month. I may just try both that and the Mesa and see which one I think sounds better. If it's the Mesa, I might as well get the 800+ for the HPF.

I’d buy an amp for the sound and feature set, not because it has a built in HPF alone. I got a regular D800 because the D800+ didn’t yet exist. It’s been a great amp for hundreds of gigs. The D800+ allows more fine tuning in the mids, so that’s rad. I just haven’t found the need to ‘upgrade’ from my normal D800 as it’s a very nice sounding and functioning amp. I have several HPF’s that work well. My Grace Felix upright pre has a built in HPF that works reasonably well, but I bought it for the pre amp, switchable impedance and fully parametric mids. My fDeck works nicely and my Broughton Audio HPF/LPF works even better. Still, some of my amps benefit from it more than others
 
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What is the name of the effect in the Zoom B1on that has a HPF in it? Anybody want to share the settings they use on it?

I believe the preamp model called AC preamp. I think that it is the depth control or something like that. I don't use that effect to often though. I just use the the parametric eq model and cut the lowest frequency all the way....kind of simulating a hpf. In fact, I use my ms60b mainly as a tuner, "hpf," and programmable eq. The Zoom units have so much to offer, I am surprised that every guitar or bass player doesn't have one to at least try different effects before purchasing a dedicated effect pedal.
 
I believe the preamp model called AC preamp. I think that it is the depth control or something like that. I don't use that effect to often though. I just use the the parametric eq model and cut the lowest frequency all the way....kind of simulating a hpf. In fact, I use my ms60b mainly as a tuner, "hpf," and programmable eq. The Zoom units have so much to offer, I am surprised that every guitar or bass player doesn't have one to at least try different effects before purchasing a dedicated effect pedal.
Thank you very, very much! And I agree with you, it is an amazing device, especially for the price!
 
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