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Just a little visual for that 4-5 string button coming from a 700/1001RB-ii preamp. I've posted a similar chart previously with the knobs at noon settings, but I think that comparing both 4- and 5- string settings when the amp is set for all intents and purposes "flat" for each makes more sense in this instance. See below.
There's at least one piece of gear you have listed in your profile that has a verified HPF (per earlier in this thread) built in...
I have found little to no info on the EA HPF. The manual mentions the amp has it, but there is no info on the frequencies or what the adjustment range is. I have not been able to make it work as well as the FDeck. They make a great amp, but give very little info in the manual or on their website. I already had the FDeck, so just use it instead. I know it works well.
Thank you @Kro.Just a little visual for that 4-5 string button coming from a 700/1001RB-ii preamp. I've posted a similar chart previously with the knobs at noon settings, but I think that comparing both 4- and 5- string settings when the amp is set for all intents and purposes "flat" for each makes more sense in this instance. See below.
View attachment 3126758
Yes, at the beginning of the chain is often the best place - you can get a lot of voltage swing when you pluck a string, and a lot of that is subsonic stuff - it can clip something early in your signal chain if you put the high pass later in the chain, and that doesn't do anyone any good - once a signal is clipped, there is no "unclipping" it. We have the same issue in pro audio - wind blasts in microphones do similar things. If you look at professional mixers used for field work, they all have selectable high pass filters on their inputs.
I've been quite happy with my HPF at the end of my chain.
It ensures all my effects work exactly as they should, which is why I bought them.
Most of my "clipping" is intentional, so no worries there.
The H/LPF just ensures I'm sending a nice and neat clean signal to my amp and FOH.
Also, most soundguys are applying an HPF at the board, which is also post-amp and effects.
And all amps with built in HPF's are automatically post-effects.
So IMO, play with the placement of the HPF and see what works best for you.
It ensures all my effects work exactly as they should, which is why I bought them.
Most of my "clipping" is intentional, so no worries there.
The H/LPF just ensures I'm sending a nice and neat clean signal to my amp and FOH.
Also, most soundguys are applying an HPF at the board, which is also post-amp and effects.
And all amps with built in HPF's are automatically post-effects.
So IMO, play with the placement of the HPF and see what works best for you.
scottfeldstein
Roots and fifths and a little extra.
That is a really good point, Trevor. I'm starting to think that it just doesn't matter much where you put it. I'll be trying both ways, I think.
- Feb 12, 2006
- 60,963
- 5
- 220,656
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
With the HPF early in the signal path, subsonic signal can interact with the control signals on gates, compressors, dynamic filters and dynamic eq. Pro audio pieces deal with this within the sidechain as well as the main audio path by dedicating hpfs as needed.
Also, if significant subsonic signal levels occur, clipping of these subsonic can create audible artifacts that are generally unwanted as they are not musically related.
This is why it's usually more successful to deal with subsonics before they enter the signal path.
Also, if significant subsonic signal levels occur, clipping of these subsonic can create audible artifacts that are generally unwanted as they are not musically related.
This is why it's usually more successful to deal with subsonics before they enter the signal path.
Found this preamp-DI with HPF 10Hz to 160Hz:
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Hi Kro! can you explain how to make these graphics? I'm thinking in analize all my stuff (pedals, head,...)Just a little visual for that 4-5 string button coming from a 700/1001RB-ii preamp. I've posted a similar chart previously with the knobs at noon settings, but I think that comparing both 4- and 5- string settings when the amp is set for all intents and purposes "flat" for each makes more sense in this instance. See below.
View attachment 3126758
I used TrueRTA. Pretty awesome tool. Version with highest resolution is like $99, but for somebody as curious as me, it's money very well spent!
- Feb 12, 2006
- 60,963
- 5
- 220,656
- Disclosures
- Development Engineer-Mesa Boogie, Development Engineer-Genzler (pedals), Product Support-Genz Benz
Be absolutely positive that you do not measure the output of any bridged amp (including most class D amps) without a proper ground isolation device... if you were to connect the laptop/computer interface to the speaker out, the minus terminal is not at ground and the changes are that you will destroy a perfectly good laptop or interface... as well as possibly your amp.
You need to know exactly what you are doing here, a little knowledge can be very dangerous. generally, there's no problem measuring a preamp output, but be sure that there's no 1/2-Vcc bias present, especially when plugging and unplugging the generator side of the test set-up.
You also need to know the absolute levels you will be dealing with, there are some really significant input limitations on these inputs, resulting in either completely inaccurate results, or damage to the interface (depending on how well they are protected).
