I'd like to try sending everything above 200-300 Hz through my Alpha Omega 900 and remove the lower frequencies but I can't find what I'm looking for. I just want a simple pedal, it's just the HPF I'm interested in. Any suggestions? I live in Sweden so I'd prefer getting it from somewhere not too far away. Is it hard to make my own HPF?
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HPF pedal
- Thread starter John Falk
- Start date
Broughton is the way to go for LPF and HPFs.
The combo Low + High Pass filter pedal was the gateway drug into Broughton land for many of us, but the regular separate LPF and HPFs are great as well.
I use both the Broughton and the Fdeck and both work well. If you want to build your own you can use the open schematic provided by Francis Deck (Fdeck) - a regular contributor here on Talkbass:
hpftechllc - HPF-Pre Series 3 technical info (google.com)
hpftechllc - HPF-Pre Series 3 technical info (google.com)
The Source Audio EQ2 can do this, along with many other things. In fact, you could use it to send a high-passed signal to your AO, and a low-passed signal elsewhere, as an example.
MINI-HP-VONG
Bausätze – Schalltechnik_04
Depending on where you are, this might be a budgetfriendly option.
Bausätze – Schalltechnik_04
Depending on where you are, this might be a budgetfriendly option.
Kudos to Mister Deck, for selling a reasonably priced, super product, and even more for publishing the schematic so that doityourselfers can build their own
It seems like what you really want is a crossover. That will split your signal into two bands - high & low - at whatever frequency point you like. The two most common ones I’ve seen mentioned on the forum over the years are made by Rolls and SFX
Try to contact this pedal builder from Poland and ask him about the international shipment Invalid Link Removed
He also has his own site where he sells parts that can be used to build his pedals on your own High Pass Filter / HPF kit ULTRA
I have this HPF and it's working perfectly.
He also has his own site where he sells parts that can be used to build his pedals on your own High Pass Filter / HPF kit ULTRA
I have this HPF and it's working perfectly.
If you are looking to eliminate frequencies below a certain point, a HPF is what you’re looking for. I use the Broughton Always On, which is a highly effective solution that you set with your ears rather than a particular frequency.
Cave Puppy
"Humph Bo, he's wond!" - John Lennon
I think the Broughton HPF only goes to 190 hz. Yes, it does. I just checked the site. I gave my son one and I have another on the way.
https://www.broughtonaudio.com/product-page/high-pass-filter
https://www.broughtonaudio.com/product-page/high-pass-filter
Cave Puppy
"Humph Bo, he's wond!" - John Lennon
The Genzler RE/Q is an awesome piece of gear (I have one of those as well). The HPF on that goes from 30 hz to 200 hz. It also has a LPF as well which can be handy. The only other HPF I know of that goes higher is the HPF on the JHS ColourBox V2. It STARTS at 165 hz and they are $$$$.
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These filter RC circuits are extremely low cost. Of all things in your chain you don’t get a better HPF or LPF if you spend more. There is nothing boutique or rare in a band filter or crossover. Get one from a local store or online. A $200 HPF is not better than a $25 HPF.
That is a high pass filter, but it only filters out subsonic stuff (below 30 Hz-ish)
A passive RC filter can work, but it relies on the source and load resistances of the gear it's between being fairly low and fairly high, respectively - if the circuit isn't hooked up to other gear that it meshes with well, its characteristics change. Also, most applications work better with a 2nd order or higher filter, which you can't do well with passive circuits.
So, you need an active filter most of the time. An active filter means you need an op amp (or transistors, or FET's). Once you get into active stuff, you have (among other things) noise to deal with. If you want a quiet filter, now you're getting into the territory where the active parts really matter. A $25 high pass filter almost certainly isn't going to use the best (quietest) op amp in its circuitry.
Out of curiosity, what is your setup ? How do you expect to get the low frequencies back in the signal ?
Maybe what you're really looking for is a crossover pedal, to leave the lows untouched by the distortion, and then merge it with the distorted highs. Are you trying to recreate something similar?
I just added this one to my small board, and so far really liking it.
https://www.broughtonaudio.com/product-page/always-on-high-pass-filter
Good Luck!
