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

#1,381
JimmyM said:
Bill Fitzmaurice used to say you could accomplish the same thing by putting a rug in front of your cab.
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thats interesting... Did he mean "cover the grill" or place on the floor in front of the cab to deaden reflections off a hard surface?

To decouple, I used to "lift or rotate" my cab if needed, (now just use amp based HPF if needed). Never bothered with an Auralex, but I like the DIY cardboard idea. I tend to scavenge whatever is on location if needed.
 
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#1,383
K-2 said:
Hey guys. I thought this might be the best place to get opinions as well to learn something new.
For quite some time I was thinking about adding a HPF/LPF to my rig.
I got down to two options - Broughton HPF/LPF and OmniCabSim (which if I understand correctly - is a HPF/LPF in its essence).
Trying to be brief : My goal is to get rid of low end mud/boominess and as much as I like high end - I dont think I need something like 10 kHz in my signal.
If that matters when giving opinions, my rig is - Peavey Minimega - 2 Ashdown 4x10 - Tech21 DP3x preamp and EHX hotwax. Basses varies - J, PJ and HH.
I believe that both options would give me my desired results, but as I live in Europe and both pedals would come from overseas - I dont have a prestige of trying them out beforehand as well will incur Taxes, etc.
Maybe someone had experience with both units? Please share anything and everything.

Apologies for my English

Cheers guys!
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As was covered previously, You can start by getting your rig off the floor with a stand or a rug, cardboard, or Auralex pad or something like it.

I use the Bro-ton always-on HPF. It works. It removes mud and gives you your amp tone, only cleaner.

No experience with the other.

Based on the website, the Omni has a few more eq tricks than the Bro-ton.
 
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#1,387
TheBass said:
Got the same, except I bought the housing drilled and completly painted. I am no DIY fan either but with Julians complete and idiot prooven sets (prooven by me !) you can't go wrong. And if you still manage to fail Julian is very helpful and even repairs it for you.
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#1,389
Great thread! I’ve only made it to page 7 so far and my aged brain hurts already.

Some questions come to mind and I hope they’re not redundant if I read the rest of this thread. But if I don’t ask them now, I’ll forget what they were.

I’m figuring that my Genz Streamliner has a built in fixed HPF. Also my Aguilar Tonehammer 350?

This may explain why my old Alembic F1X rig was untamable in a boomy room but sounded wonderful in a good room. The power amp used to warm up a bit too.

I remember watching my Eden 2x10s flapping around like crazy when hooked up to my old SWR SM 400. I sorta knew why but never knew there was anything to be done about it. You could fry an egg on that SOB at the end of a set.
 
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#1,392
Father Gino said:
How about an Aguilar Tonehammer? HPF?

All of this also explains why I blew up two GS 112s with the aforementioned Alembic rig. A single cab was loud enough for the low volume gigs I was playing at the time, but I used to boost the bass up on the amp... Kaboom!
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I'd like to know if the TH has built-in HPF as well. I have noticed that the drive control seems to function a bit like a HPF and LPF combination, at least on the settings I use.

As for the SM400 mentioned earlier I can't imagine using mine without a HPF. That head more than most I've played truly needs a HPF to protect speakers and greatly benefits (e.g. additional headroom, much better tone) from having one used before the input or in the effects loop.

As a final thought, a HPF is not a license to go nuts with bass EQ or power/volume, as it won't protect against everything an operator can do to damage a speaker.
 
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#1,394
Father Gino said:
Great thread! I’ve only made it to page 7 so far and my aged brain hurts already.

Some questions come to mind and I hope they’re not redundant if I read the rest of this thread. But if I don’t ask them now, I’ll forget what they were.

I’m figuring that my Genz Streamliner has a built in fixed HPF. Also my Aguilar Tonehammer 350?

This may explain why my old Alembic F1X rig was untamable in a boomy room but sounded wonderful in a good room. The power amp used to warm up a bit too.

I remember watching my Eden 2x10s flapping around like crazy when hooked up to my old SWR SM 400. I sorta knew why but never knew there was anything to be done about it. You could fry an egg on that SOB at the end of a set.
Click to expand...
Agreed with the aged brain bit. The $2.00 question for me is-- what is a generally universal pedal that's easy and effective to use as a HPF? I've read a lot of pages and googled some of the pedals, but they seem unavailable and some made for double bass. I'm looking for a name brand simple to use battery operated unit.

Thanks!
 
#1,395
alaskaleftybass said:
Agreed with the aged brain bit. The $2.00 question for me is-- what is a generally universal pedal that's easy and effective to use as a HPF? I've read a lot of pages and googled some of the pedals, but they seem unavailable and some made for double bass. I'm looking for a name brand simple to use battery operated unit.

Thanks!
Click to expand...

I haven't personally tried it yet, but I think that FDeck is the most popular model that can run on a 9v battery.

I personally use the Broughton HPF, which is a great unit, but does NOT run on a battery.
 
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#1,396
Mushroo said:
I haven't personally tried it yet, but I think that FDeck is the most popular model that can run on a 9v battery.

I personally use the Broughton HPF, which is a great unit, but does NOT run on a battery.
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Thanks! I saw the Broughton but passed on it for its lack of battery. I'll look at FDeck again; I initially passed on it because of so many double bass reviews.
 
#1,397
alaskaleftybass said:
Agreed with the aged brain bit. The $2.00 question for me is-- what is a generally universal pedal that's easy and effective to use as a HPF? I've read a lot of pages and googled some of the pedals, but they seem unavailable and some made for double bass. I'm looking for a name brand simple to use battery operated unit.

Thanks!
Click to expand...
fdek's is battery operated. Used by both upright an electric bassists.

Take a look at v2 and v3(wall power too)

HPF-Pre, updated September 26, 2017 - hpftechllc

Invalid Link Removed
 
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#1,400
alaskaleftybass said:
Thanks! I saw the Broughton but passed on it for its lack of battery. I'll look at FDeck again; I initially passed on it because of so many double bass reviews.
Click to expand...

The Broughton L+HPF can be run w/9V battery. Don't disregard the usefulness of a LPF. Problem is, it's out of stock until December 21st (2018)
 
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