NFB loop original

[llemtt]

The 20Meg really flattens the BW out a lot, but it also tends to compress a bit (or a lot more).

Do you also feel increased articulation but a stiffening in the sound with the amp that becomes "harder" to play?

Teo

[glasman]

The 20Meg really flattens the BW out a lot, but it also tends to compress a bit (or a lot more).

Do you also feel increased articulation but a stiffening in the sound with the amp that becomes "harder" to play?



Yes, that would be a good way to describe it, the notes are very even, but you lose some of the touch dynamics.

[greiswig]

When I was tinkering with switchable values for this LFB loop on my own build, I found that about 44M on the lowest setting seemed about right. Anything below that, and "hard" is a good word to describe the way the clean channel played. Lifeless would be another word I'd use.

In OD mode, the lower resistance settings seem to be more tolerable. They offer a tighter, but still usable, flavor to overdriven tones.

One modification I plan to make is to put in another relay to switch this loop in at 44M when in OD, and switch to another value (open or 88M) when on the clean channel.

[rackandroll]

Hey guys check out my post about this. I started a new thread about as I didn't realize this was here. Interesting stuff.

alex

[heisthl]

When I was tinkering with switchable values for this LFB loop on my own build, I found that about 44M on the lowest setting seemed about right. Anything below that, and "hard" is a good word to describe the way the clean channel played. Lifeless would be another word I'd use.

In OD mode, the lower resistance settings seem to be more tolerable. They offer a tighter, but still usable, flavor to overdriven tones.

One modification I plan to make is to put in another relay to switch this loop in at 44M when in OD, and switch to another value (open or 88M) when on the clean channel.

You don't have to switch to "open" to eliminate the effect of this feedback circuit, you can just put the 2 22M resistors next to each other in the 22m/22m/.05 string and switch in a ground point between the 2 resistors.
Make sure the Cap is on the plate so you don't have to worry about the 300v rating of most of the 22M resistor choices.

[greiswig]

You don't have to switch to "open" to eliminate the effect of this feedback circuit, you can just put the 2 22M resistors next to each other in the 22m/22m/.05 string and switch in a ground point between the 2 resistors.
Make sure the Cap is on the plate so you don't have to worry about the 300v rating of most of the 22M resistor choices.

This would eliminate any "pop" associated with switching it, but is there any other difference between open and grounded?

Thanks!

[heisthl]

Not that you can hear

[Bombacaototal]

Great post. I was actually wondering the same thing, if 2x10M would be very different from a 22M
My project is currently using 22M

[Bombacaototal]

My amp has a low playe skyliner and no overdrive

I am wondering how many people are actually using the LNFB on a switch and if you are actually making use of the switch frequently or if it usually on a set and forget setting?

I am considering it but also do not want the amp to become an aeroplane cockpit