I see on the schematic that #124 had a 300pf cap in series with the .002uf treble cap yielding ~261pf whereas the skyline tone stack (generally?) had 390pf in series with the .002uf yielding ~326pf.
Is that the correct value for #124? How much of a difference would there be between the two values?
many thanks and alohas
Nick
#124 Mid boost
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Luthierwnc
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Re: #124 Mid boost
The larger cap will be a little brighter.
This is one of those situations where you buy both values (and maybe one inbetween) and dial it in when you see what the first fire-up sounds like. With these things it's like mixing spices in a recipe. Add here, reduce there. Throw in; which guitar, which speakers, which room and your playing style for variables too. That's why most guys here have their amps on blocks more than in the cab.
Good luck, Skip
This is one of those situations where you buy both values (and maybe one inbetween) and dial it in when you see what the first fire-up sounds like. With these things it's like mixing spices in a recipe. Add here, reduce there. Throw in; which guitar, which speakers, which room and your playing style for variables too. That's why most guys here have their amps on blocks more than in the cab.
Good luck, Skip
Re: #124 Mid boost
Here is some notes I saved from a previous discussion about the mid boost and treble caps:
Gil
1. Increasing the size of the Treble cap (normally .0022uF at the board and 390pF at the "Mid" switch -- and this is for amps with a "Mid" as opposed to a "Deep" switch) will thicken the sound. To me, with the switch off, the increase in the cap value is perceived as an increase in the higher mids.
2. Also, DECREASING the size of the Mid cap at the board (.01uF for a Skyliner EQ amp) will definitely increase the lower mids.
As Brandon indicated, there are a LOT of other things that play a role as well. So looking at just these two caps will definitely only tell a partial story.
Gil
Henry
Simpler explanation - The treble cap sets the amount of upper mids, bigger = more. The mid cap connected to the midrange control sets the "scoop" (lo mids) A fender twin uses a .047 which is very scooped and great for country. A fender Super reverb uses a .02 which is less scooped and is great for blues. A Dumble uses a .01 and is the least scooped of all and is best for fusion. When you experiment with those 3 values you will also notice that the bass control has a greater range of bass available when the mid cap is the smallest. Hope this helps - Henry
Why speculate - just get a couple clip leads and add some different values of caps in parallel with the .01 mid cap you have there now. Try a .01 first (for the equivalent of a .02) and see if you need to go upwards or downwards from there. You may have to scrape some goop to get to the clip lead point where the mid cap and slope resistor meet. The other clip lead can attach directly to the mid pot.
Gil
1. Increasing the size of the Treble cap (normally .0022uF at the board and 390pF at the "Mid" switch -- and this is for amps with a "Mid" as opposed to a "Deep" switch) will thicken the sound. To me, with the switch off, the increase in the cap value is perceived as an increase in the higher mids.
2. Also, DECREASING the size of the Mid cap at the board (.01uF for a Skyliner EQ amp) will definitely increase the lower mids.
As Brandon indicated, there are a LOT of other things that play a role as well. So looking at just these two caps will definitely only tell a partial story.
Gil
Henry
Simpler explanation - The treble cap sets the amount of upper mids, bigger = more. The mid cap connected to the midrange control sets the "scoop" (lo mids) A fender twin uses a .047 which is very scooped and great for country. A fender Super reverb uses a .02 which is less scooped and is great for blues. A Dumble uses a .01 and is the least scooped of all and is best for fusion. When you experiment with those 3 values you will also notice that the bass control has a greater range of bass available when the mid cap is the smallest. Hope this helps - Henry
Why speculate - just get a couple clip leads and add some different values of caps in parallel with the .01 mid cap you have there now. Try a .01 first (for the equivalent of a .02) and see if you need to go upwards or downwards from there. You may have to scrape some goop to get to the clip lead point where the mid cap and slope resistor meet. The other clip lead can attach directly to the mid pot.
Tom
Don't let that smoke out!
Don't let that smoke out!
Re: #124 Mid boost
Hi guys,
I have the mid caps switchable. I have .01uf with a 3-way toggle that puts either another .01 or .04 in parallel so I have .01, .02, or .05. I love the versatility, it's great with different guitars. I do get popping when I switch in the other caps. Would it work to put large value resistors (1m+) across the switch to keep it from popping, or will having the resistance there cause other problems?
As far as mid-boost goes I have the 300pf in there but might try something larger. I think it would benefit from a little more upper mids. A little more fullness with PAB on would be nice too.
Nick
I have the mid caps switchable. I have .01uf with a 3-way toggle that puts either another .01 or .04 in parallel so I have .01, .02, or .05. I love the versatility, it's great with different guitars. I do get popping when I switch in the other caps. Would it work to put large value resistors (1m+) across the switch to keep it from popping, or will having the resistance there cause other problems?
As far as mid-boost goes I have the 300pf in there but might try something larger. I think it would benefit from a little more upper mids. A little more fullness with PAB on would be nice too.
Nick