Bass boost help/knowledge opinions??

[kurtsstuff2003]

So..I'm looking at this power amp and it's being billed as having a "bass boost" mod of some kind?
I've included a couple of pictures of the pots and cap and what I think is the 2 wires from the bass boost pots to the volume,presence,dynamics circuit board of the amp.
I looks to me like 2 wires from the bass boost pot are attached to the 8ohm speaker jack (I know it's the 8ohm because I've owned these amps before..lol!) I hope maybe somebody can tell me what they think this mod might really be?..The seller is just guessing but apparently turning these 2 pots increases or decreases bass response (left and right side each have one). Just looks too simple to me but what do I know?? lol!

 

[paulyc]

Looks like a depth mod, it’s a resistor (the pot) and a capacitor.

 

[kurtsstuff2003]

Looks like a depth mod, it’s a resistor (the pot) and a capacitor.

Thank you...it is what it is then!!

 

[fusedbrain]

Yeah, that looks like a depth mod to me as well.
That seems like an odd value cap to use though ( .02uf )
I would expect to hear only a very low frequency sub-bass boost with that value.
A .0047uf cap is usually used for a depth circuit.
How does it sound?

 

[kurtsstuff2003]

Yeah, that looks like a depth mod to me as well.
That seems like an odd value cap to use though ( .02uf )
I would expect to hear only a very low frequency sub-bass boost with that value.
A .0047uf cap is usually used for a depth circuit.
How does it sound?

I have no idea..it's a "Reverb" find that I've been looking at

 

[paulyc]

Yeah, that looks like a depth mod to me as well.
That seems like an odd value cap to use though ( .02uf )
I would expect to hear only a very low frequency sub-bass boost with that value.
A .0047uf cap is usually used for a depth circuit.
How does it sound?

A fellow forum member here shared a cool mod from his Mesa Strat 400, pull pot with a .001 cap on the pushed in position and another (or 2 .001 caps in parallel ?) on the pulled out position. Like bass and sub-bass boost.

 

[fusedbrain]

I have no idea..it's a "Reverb" find that I've been looking at

OK.
It would be easy enough to adjust to taste, or just not use it / remove it.
Shouldn't be a factor in your decision to purchase or not, other than the 2 holes drilled in the panel.

 

[kurtsstuff2003]

OK.
It would be easy enough to adjust to taste, or just not use it / remove it.
Shouldn't be a factor in your decision to purchase or not, other than the 2 holes drilled in the panel.

They used the input ( 2 on each side)..so..there is no drilling..clean work

 

[fusedbrain]

They used the input ( 2 on each side)..so..there is no drilling..clean work