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There's another discussion, I hit my hpf first, but my compressor is built into a short signal chain and I can't get between the different functions.
Still, there are different ways (edit) to use it.
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Selectable or adjustable HPFs are built into many, if not most, mixing consoles and preamp pedals (Fishman for example). It's NOT just boutique or 'unknown' companies.
In mixing consoles yes. I know that. But we know from this topic that built-in HPF in amps is not enough because you use external stomp-box anyways. So I guess built-in is not enough to protect cab. I really tried to find pedal with adjustable HPF fromwell-known brands and I can't. Noble preamp has HPF at 90hz, Radial Bassbone has switch with HPF too.There's a lot of parametric eq's, most of them like Boss have graphic eq but no HPF/LPF options. So it's not so popular in pedal/preamp/amp thing.
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I know, I will draft more detailed reply when I get to computer…
After all those comments you showed me that I was wrong with HPF idea in cabs and amps so I really thought about this topic yesterday and now I think HPF can make sense in any situation but it's hard to find other HPF in preamp/stomp-box Broughton pedal. And I asked on Polish bass forums about HPF idea and most of users use HPF, yes, but in studio application not during gigs on stage.
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@jb90... Here's a couple thing to try to give you more understanding of the HPF.
-remove the grill on your cab so you can see the drivers. Now, without a HPF in your signal chain, slap the E or B strings on your bass. Watch your drivers, they will move drastically trying to re-produce all the frequencies being sent from the bass and amp. That movement is wasted energy from your amp and could, given enough power, send the driver into over-excursion. That is not a sound you want to amplify.
Now, add a HFP (adjustable) and preform the same test. You'll notice that the driver does not move the same, assuming you have set it appropriately.
Here's another example...
Back in the old days of vinyl records, if you removed the grill on your home speakers, you could see them reacting to a warp in the record.They will move in and out with the warp. My old home stereo was an Akai and it had two HPF's built into it, one at 20hz and one at 40hz. Engaging the 20hz filter stopped the woofer from moving with the warp, giving my 60 watt per channel amp much more perceived power and at the same time, stopping the woofers from trying to re-produce those frequencies. Win win!
Fishheadjoe
-remove the grill on your cab so you can see the drivers. Now, without a HPF in your signal chain, slap the E or B strings on your bass. Watch your drivers, they will move drastically trying to re-produce all the frequencies being sent from the bass and amp. That movement is wasted energy from your amp and could, given enough power, send the driver into over-excursion. That is not a sound you want to amplify.
Now, add a HFP (adjustable) and preform the same test. You'll notice that the driver does not move the same, assuming you have set it appropriately.
Here's another example...
Back in the old days of vinyl records, if you removed the grill on your home speakers, you could see them reacting to a warp in the record.They will move in and out with the warp. My old home stereo was an Akai and it had two HPF's built into it, one at 20hz and one at 40hz. Engaging the 20hz filter stopped the woofer from moving with the warp, giving my 60 watt per channel amp much more perceived power and at the same time, stopping the woofers from trying to re-produce those frequencies. Win win!
Fishheadjoe
- Feb 12, 2006
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- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Many players use fixed HPF’s without knowing it.
Passinwind
I know nothing.
- Dec 3, 2003
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For starters, look at pedals from Fishman, Mesa, and Genzler.
And then of course there's the DIY option. @fdeck has published the schematic for a couple of his HPFs so that anyone who wants to build one can, and I am very close to releasing a non commercial open source one with PCBs readily available through a reputable board fabrication vendor. Mine will be using some surface mount parts, so it may not be ideal for beginning DIYers.
It may not be popular with the uninitiated or unknowledgeable but is a staple for sound engineers. Guitarists seem obsessed with that LF chunk so they typically steer away form something they believe will inhibit there 'tone.'
Many, if not most, Preamps do have HPFs built in but may call it something different. Mixing consoles typically utilize HPFs for vocal mics and are usually set from 80-100 Hz. That implementation is useful to help prevent microphone rumble and woofiness for vocals (the human voice doesn't go that deep compared to other instruments, even if your James Earl Jones LOL).
Bottom line is that an HPF is an audio tool that can help your instrument fit better in a mix by fitting into a sonic zone (especially when used with a LPF).
There are many audio tools that most of us either don't know about, have no experience with. That doesn't make them any less useful or desirable. IME after using a HPF/LPF I couldn't believe the usefulness and it's now part of my gear! I had discovered the HPF after 30 years of playing, and I choose not to go back.
That's a good idea! Thanks. Where can I find this schematic?For starters, look at pedals from Fishman, Mesa, and Genzler.
And then of course there's the DIY option. @fdeck has published the schematic for a couple of his HPFs so that anyone who wants to build one can, and I am very close to releasing a non commercial open source one with PCBs readily available through a reputable board fabrication vendor. Mine will be using some surface mount parts, so it may not be ideal for beginning DIYers.
Live engineers will probably appreciate you using an hpf in your own signal chain, to prevent your lowest freqs from being picked up by stage mics, and bringing them into the house mix.
Passinwind
I know nothing.
- Dec 3, 2003
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- 45,901
- Disclosures
- Designer/Toaster Tech @ Passinwind Electronics
hpftechllc - HPF-Pre Series 3 technical info
When mine is released it will be announced in this thread: The Passinwind Open Source Preamp
There are a few more fully featured options in the works as well, as you will see near the end of that thread.
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Thanks! I'll talk with some guys who make their own pedals and maybe they help to build that.
Thanks! I'll talk with some guys who make their own pedals and maybe they help to build that.
Hey, @jb90, I wanted to apologize for ignoring you. I didn't realize that you were willing to learn about the topic. Fortunately, some regulars here had more patience than I and I want to welcome you to the "believers" side of the thread.
i tried first in the chain, after compression and last in chain and got the best result (fattest sound) when i placed it first (not the broughton but the hotone gate)
