Orange Dark Terror. Mod for more resonance.?

[Redline]

I aquired an Orange Dark Terror about three weeks ago. It sounds great through my V30 loaded 4x12 but I would like a little more depth/low end. I'm currently running an eq in the loop and I'm barely pushing the low end. I like the result that I'm getting, but I like to tinker. I heard that the Mercury Magnetics output transformer adds some low end, but I'm thinking the resonance control mod would work for me. Problem is I can't find a schematic to find the NFB resistor. If someone could please locate the NFB resistor for me and suggest different resistor and/or capacitor values to experiment with. It would be greatly appreciated. Also I wouldn't mind making this a permanent mod without a switch or pot. Just a simple piggy-back on the existing NFB if that will work.? Thanks in advance!

[Redline]

Nevermind about the schematic. Just found one on here. My question still remains. Can I just piggy back r48?

[nickb]

A replacement transformer would be the very last thing to try. You could try adding a 0.1uF capacitor in series with the 4.7k feedback R48 to boost the LF below about 330Hz. You can play with the value and/or add a 20K variable resistor in parallel with the cap to vary the effect.

[J M Fahey]

Or you can use another type of speakers in your cabinets.
V30 is brash , bold and with not much deep bass.
Or accept you are using V30 and be happy with its sound, which I bet must be killer as-is.