can you post details and links for the servo sub that you built?
also if possible try out DSP REW capable devices such as DEQX or miniDSP. with a good measurement setup and REW, you can reduce the room impact to a larger extent.
also if possible try out DSP REW capable devices such as DEQX or miniDSP. with a good measurement setup and REW, you can reduce the room impact to a larger extent.