For all things to build the brown sound
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rgorke
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by rgorke » Sun Mar 10, 2013 11:14 pm
I am trying tighten my bass a bit. I have tried upping the NFB to as much as I can.
My mixer is 470k/560pf and that give me a cutoff frequency of 604 hz. If I go to 470k/470pf, that will give me a cutoff of 720 hz. So, will that make the bass tighter or just make the amp brighter? Is there a difference?
I will try tomorrow, RS is closed at 11 pm.

"If you make a mistake, do it twice and smile and let people think you meant it." Jan Van Halen.
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jnew
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by jnew » Sun Apr 14, 2013 1:20 am
Any good results come from experimenting here?

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rgalpin
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by rgalpin » Sun Apr 14, 2013 6:45 am
rgorke wrote:I am trying tighten my bass a bit. I have tried upping the NFB to as much as I can.
My mixer is 470k/560pf and that give me a cutoff frequency of 604 hz. If I go to 470k/470pf, that will give me a cutoff of 720 hz. So, will that make the bass tighter or just make the amp brighter? Is there a difference?
I will try tomorrow, RS is closed at 11 pm.

looking forward to hearing what you hear here. i use a 560p but my tests with different values were inconclusive and 560p is just the last value i tried - but i tried a bunch including none - ?? but i was fighting with other components at the time and blocking distortion which i think the mixer cap may have played into...
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Strat78
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by Strat78 » Sun Apr 14, 2013 9:07 am
rgorke wrote: RS is closed at 11 pm.

Ahh, if only that meant RADIOSPARES! Stick with around 420 to 560pf, but try different makes. I find the treble to be more effectively controlled with the 5000pf cap on vol1. Perhaps going higher on the mix cap is more important for dialing in a little cymbal splash to get that I'm The One effect.
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jnew
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by jnew » Sun Apr 14, 2013 9:25 am
Strat78 wrote:rgorke wrote: RS is closed at 11 pm.

Ahh, if only that meant RADIOSPARES! Stick with around 420 to 560pf, but try different makes. I find the treble to be more effectively controlled with the 5000pf cap on vol1. Perhaps going higher on the mix cap is more important for dialing in a little cymbal splash to get that I'm The One effect.
Interesting observation. I've noticed going up in value here, makes the amp feel and behave in a similar fashion to hitting the front end with a boost or something. Not entirely all the same of course but like in a hotter signal sort of way.
