Datrumole great write up I’m sure you have helped a ton of people fix there speaker thanks for taking the time.
looking to fix my bp7006s wondering isf this amp from Amazon would fit the build and if the you could also control the volume ?
DollaTek Super Power Digital Power Amplifier Board TDA8954 core Dual 210W+210W Power Supply 12-28V
hey, that was the hope, glad i could help
so there are a couple of ways to 'control the volume'
at the end of the day, we are looking to reduce the voltage on the signal line that gets to the amplifier. you can do that in the analogue world with pots (potentiometers), which are a series of resistors that lower the voltage (sometimes called attenuators). or you can do that in the digital world prior to creating the analogue voltage/signal, say via the AVR or some sort of DAC with volume control
on my module in the original post, there is no onboard pot/volume control because the volume is handled at the AVR, it handles how much voltage to put on the LFE signal wire. since that get's calibrated with whatever AVR calibration system you have, it should set it properly and wouldnt really be needed
again in my example, you could take and run the input signal through a stand alone pot you mount in the existing hole on the plate, prior to running to the input of the amp module, voila, you now have TWO signal controls. a digital one on the AVR, and an analogue one at the pot. nice for on the fly adjustments i suppose, but doenst add anything to the system in a way as you've always had a way to control it
the amp module you've linked has an onboard pot, the only issue i see here is, if you plan on mounting inside the case, how to you intend on getting to it? unless of course you mounted it so that the pot sticks out of the plate, then go for it! one less step of finding a separate pot in my modules case
however, does it entirely need an additional 'volume control' (attenuator in this case), no. but if you feel you need one, go for it. doesnt really hurt anything. it makes for quick adjustments which i'm sure some people miss. just harder to level match them once you start fiddling with them independently