Join Date: Dec 2017
Location: Hudsonville, MI
Mentioned: 7 Post(s)
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Reviewing the situation and all the variables, along with some assumptions you may want to verify.
1) Receiver is a Denon AVR-X2400H, amp is a NX3000D, subs are PA-460-8, one per channel at 8 ohms (approximately 440 watts per channel).
2) One audio interconnect links the receiver subwoofer output (RCA) to the NX3000D (XLR/TS) on channel A. Note: Are you using XLR, TS, or TRS? PLEASE LINK TO THE CABLES YOU ARE USING. If you are not using the right cables, that would be a serious problem.
3) The amp is in BIAMP1 or BIAMP2 mode (verified through your screen shots).
4) You are using two separate speaker cables.
5) At the back of the amplifier, one SpeakON is connected to each output. Each SpeakON connecting to the amp is a 4 pole connector. On channel A, the speaker wires are connected into +1 and -1 terminals on the SpeakON connector. On channel B, the speaker wires are also connected to +1 and -1 terminals on the SpeakON connector. Note: +2 and -2 are NEVER used in this configuration. The wiring diagrams on the back are very confusing.
6) At each subwoofer, you either have bare wires connected to the subwoofer, or a SpeakON terminal, or some other type of speaker wire terminal. Regardless of the arrangement, you have tested this end is functional by connecting the amplifier end to a Pioneer receiver and verified your connections to the speaker are good.
Other things you can try:
1) Your receiver has dual subwoofer pre-outs. Try running separate interconnects from the two channels to the A and B inputs on your amplifier, and switch the amplifier to DUAL mode (dual mono). You can also try STEREO mode but the DSP settings will apply to both subwoofers, and you will not be able to time them independently.
2) Connect to your amplifier with the remote connect software and watch the input levels on the virtual meters while playing content through the amplifier. That may help to tell you if you're receiving enough input signal from the receiver. With the levels cranked on the receiver, that bad boy should be clipping with really loud content. Reminder: the knobs on the front of the amplifier attenuate input signal, so start with those cranked all the way down and slowly bring them all the way up to max. You can do this without speakers connected for safety.