Home › Forums › DROK Customization › TPA3116D2 to pedal sized guitar power amp
YannickJune 10, 2020 at 5:30 pmPost count: 0
I’ve just received a TPA3116D2 (Mono 100w, 24vDC unit) with the intent to try and use it as a backup amplifier for my pedal board. I was actually quite surprised how it sounds fresh out of the bag, can’t say that I prefer it over my tube amplifier but damn for the price and size, its a super good unit and might be used in future gigs.
Anyway, my question here is regarding the pots. I see they are dual gang 50k linear, with the volume having a switch included. Given I will only send one signal to the pedal, do I really need a dual gang for the volume knob? In other words, are the signal from the right and left RCA jacks each going to one side of the potentiometer? I need to reposition them to fit in a pedal enclosure so I might replace the pots while I’m at it.
Another question, there was no indication as in what was the current needed, I went with the assumption that Ohm’s law applied here and that 100w @ 24VDC would require 4.12A, is that correct?
Final question, the little white connector beside the barrel jack for the power is intended as a parallel connection to the power input, meaning I could plug something that runs at 24VDC to it, is that correct?
Thanks in advance!
YannDrokKeymasterJune 11, 2020 at 8:18 amPost count: 2971
As we have several kinds of similar items, it is hard to confirm which one exactly meet your description
Could you please offer a prdocut link or find it from below links?
DROKYannickJune 11, 2020 at 12:33 pmPost count: 0DrokKeymasterJune 12, 2020 at 4:04 amPost count: 2971
There is only one volume knob. The other potentiometer is for bass frequency adjustment. To use bass mode, please connect 1-3 jumper
And 2 pin white connector is also power input port. You can only use one input port.
Input current should be enough to power your speaker. If 24v/ 4.12A can offer enough power, you can use that.
Best regards.YannickJune 13, 2020 at 2:37 pmPost count: 0
That’s what I calculated for the power consumption as well, so I went with a 24VDC/6A power supply.
Regarding the pots, I understand what they are doing, I’d like to understand how. I think that since its a RCA / Stereo input, each side of the dual gang potentiometer is reducing one of the two RCA inputs level. So if I were to only use one side of the RCA input (since my guitar signal is mono), I could replace the dual gang pot by a regular one and leave one side unplugged.
English ain’t my first language so sorry if its not clear.
YannDrokKeymasterJune 14, 2020 at 9:58 amPost count: 2971