Setneck
Member
Hi!
Some time ago I started to feel Structure circuit a bit too muddy. I liked what it made with tone generally but I felt that the cap let too much bass go through. I was told by Charlie that the cap in the Structure circuit is 1.5uF tantalum. Inspired by the Splawn QuickRod I tried several combinations of resistors and caps attaching them to R11 resistor and found out that 0.68uF and 1uF caps opens the tone the way I wanted it. Using 0.68uF cap I got very nice Marshally overdrive, but I liked 1uF even more.
Invaluable Marvel made me a Structure Mod in two versions. At first I wanted to have four caps available to switch into the circuit: 0.68uF, 0.82uF, 1uF and 1.5uF. Marvel removed the low input and installed 4-way rotary switch, connected to a place of C2 cap.
Soon it turned out that there is only slight difference between 0.68uF and 0.82uF and I still don't like 1.5uF there
. So basically I need only two caps in mod: 0.68uF and 1uF. As the rotary switch didn't fit the place at the back panel at first the mod was installed in place of low input. But as I need in fact only two caps it can be done like regular Marvel Mod, even without the board, only by attaching the caps directly to the switch. And that is how we finally done it .
So, having Structure switch engaged I have now 3 possibilities: 0.68 uF - no cap (so only R43 resistor in circuit, giving 2.35K in cathode without cap, similar to QR with 2nd gear where You have 2.7K resistor) - 1uF.
The tone is really more open, without losing Bogner flavour.
Regards, Andy
Some time ago I started to feel Structure circuit a bit too muddy. I liked what it made with tone generally but I felt that the cap let too much bass go through. I was told by Charlie that the cap in the Structure circuit is 1.5uF tantalum. Inspired by the Splawn QuickRod I tried several combinations of resistors and caps attaching them to R11 resistor and found out that 0.68uF and 1uF caps opens the tone the way I wanted it. Using 0.68uF cap I got very nice Marshally overdrive, but I liked 1uF even more.
Invaluable Marvel made me a Structure Mod in two versions. At first I wanted to have four caps available to switch into the circuit: 0.68uF, 0.82uF, 1uF and 1.5uF. Marvel removed the low input and installed 4-way rotary switch, connected to a place of C2 cap.
Soon it turned out that there is only slight difference between 0.68uF and 0.82uF and I still don't like 1.5uF there
. So basically I need only two caps in mod: 0.68uF and 1uF. As the rotary switch didn't fit the place at the back panel at first the mod was installed in place of low input. But as I need in fact only two caps it can be done like regular Marvel Mod, even without the board, only by attaching the caps directly to the switch. And that is how we finally done it .So, having Structure switch engaged I have now 3 possibilities: 0.68 uF - no cap (so only R43 resistor in circuit, giving 2.35K in cathode without cap, similar to QR with 2nd gear where You have 2.7K resistor) - 1uF.
The tone is really more open, without losing Bogner flavour.
Regards, Andy
