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HPF - canI use this instead of others?

J

Jens4343

Dec 12, 2019
74
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#1
Hi Guys:

I'm using a GK 400RB mark iV amp and have both the ampeg 810 classic (Fridge) and also 2 x GK RBH410 cabs to choose from

I am wondering if it would make any sense to buy a high pass filter.. and if so
1) should i go for a "pure" HPF
or can I use
2) this one - which seems both cheaper and with more options?

https://www.thomann.de/dk/electro_harmonix_deluxe_bass_big_muff_pi.htm

3) Any other options (I-m situated in Europe BTW)

I play a Sandberg 4 string bass (tuned down a half tone)

Looking forward to your input
 
#11
So I contacted the guys at GallienKrueger to ask about my amp head...
Virtually all amps on the market have a HPF built in.
Most of them are going to begin rolling off near 40-50hz.

The 4/5 string button shifts this a little to allow the roll off to begin a little lower.

So do I really need a seperate HPF or what?
 
#12
Jens4343 said:
So I contacted the guys at GallienKrueger to ask about my amp head...
Virtually all amps on the market have a HPF built in.
Most of them are going to begin rolling off near 40-50hz.

The 4/5 string button shifts this a little to allow the roll off to begin a little lower.

So do I really need a seperate HPF or what?
Click to expand...

If you have it set for a 5'er and you still think the low end sounds too woofy/flabby/boomy, an addition adjustable HPF can help clean that up. I wouldn't get one unless you feel that aspect of your signal needs to be tightened or improved.
 
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#13
Jens4343 said:
So do I really need a seperate HPF or what?
Click to expand...

In addition to the HPF built into your amp, your Ampeg 810 rolls off naturally below 50hz. (Not sure about the GK cabs, but I suspect similar.) If you are otherwise happy with your tone, then no, you don't need an additional HPF in my opinion. If you get a live gig, or a recording session, the sound engineer will apply additional filters and EQ to your tone, if necessary.
 
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#15
Jens4343 said:
So I contacted the guys at GallienKrueger to ask about my amp head...
Virtually all amps on the market have a HPF built in.
Most of them are going to begin rolling off near 40-50hz.
The 4/5 string button shifts this a little to allow the roll off to begin a little lower.
So do I really need a seperate HPF or what?
Click to expand...

With your current gear I would say you don't need one.
I never felt the need when I had a 400RB.
(as opposed to those of us with SWR products that did not come with any kind of HPF built in).
 
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#16
CatOnTheBass said:
In addition to the HPF built into your amp, your Ampeg 810 rolls off naturally below 50hz. (Not sure about the GK cabs, but I suspect similar.) If you are otherwise happy with your tone, then no, you don't need an additional HPF in my opinion.
Click to expand...

I agree with this, but because of the amp HPF, not the cab rolloff. Yes, cab rolloff by itself tightens up onstage tone (which is why I love my SVT-like Bergantino NV610 even with 5-string), but a HPF will prevent those frequencies from gobbling up amp headroom, and it's also healthier and more efficient for speakers not to receive those low frequencies that they have trouble reproducing.
 
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#18
Tried the 4/5 button yester day - didnt seem to make any difference soundwise og volumewise i the rehearsing room.
Maybe I really wont be able to tell the differerence if i get a Broughton or not..
 
#19
Jens4343 said:
Tried the 4/5 button yester day - didnt seem to make any difference soundwise og volumewise i the rehearsing room.
Maybe I really wont be able to tell the differerence if i get a Broughton or not..
Click to expand...
The 4/5 button is a 1 pole passive filter set at about 30 Hz, give or take depending on the your low-mid EQ setting. If you set my HPF at 25 or 30 Hz, you very likely would not hear any difference either, but it would still give twice the slope for frequencies below this point, which you very likely don't need reproduced. The purpose of having it variable is you can tune the cutoff to any room to remove boom, which a fixed filter wouldn't be able to do.
 
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#20
Azure Skies said:
The 4/5 button is a 1 pole passive filter set at about 30 Hz, give or take depending on the your low-mid EQ setting. If you set my HPF at 25 or 30 Hz, you very likely would not hear any difference either, but it would still give twice the slope for frequencies below this point, which you very likely don't need reproduced. The purpose of having it variable is you can tune the cutoff to any room to remove boom, which a fixed filter wouldn't be able to do.
Click to expand...
Hi Azure Skies:
So you do not think that
https://www.broughtonaudio.com/product-page/high-pass-filter
or
https://www.broughtonaudio.com/product-page/low-high-pass-filter

is more fitting for my purposes? I mainly use the passive pick-ups in my Bass, but know and again I use the active pickups.
 
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