I have a Trace-Elliot Velocette that I'm very satisfied with. This amp works very good also for recording bass, but the low notes will be much less sturdy when recording through this amp than if I record through line. Of course I can use a line box and mix the different sounds, but since I also practice bass with the amp I've been figuring to put a switch which would disable the tone control. I could then switch the tone control on and off regarding if it's needed.
- Would this be a good idea?
- Is it usual that guitar amps do filter a lot in the lower registry, or is this due to the speaker?
- What would the adverse effects be when the filter is switched out? Would there be low frequency (50/60 Hz) hum?
Here's a service manual for the amp. Looks like I should make a switch that changes C3 (input) and a switch that disconnects the tone control altogether.
Looking forward to your thoughts on this.
It turned out that the schematic linked above is not exactly corresponding to the Velocette I own. It seems it's more like the one below, in which the input capacitor C3 is rated at 100nF with a 1MOhm resistor after it, which I guess will give a cut off frequency of 1,6 Hz compared to the 723 Hz cut off with the 0.22nF in the schematic above (calculations done at this page).
I still think the amp has bad response in the bass spectrum, but that doesn't seem to relate to the C3 cap.
UPDATE: I've now used the amp for recording bass for a couple of months and I must say it sound amazing. For me there's absolutely now reason to modify it to use it for this purpose. I mix in a little bit of the line signal direcly from the bass to get more clarity in the very low end, and that's it.