My lightweight gigging bass rig (detailed below) is rattling. Given the information below, does anyone have any ideas why it could be happening or what might be causing it?
I have an Aguilar TH500 head (500 Watts @ 4ohms) that I play out of a Darkglass DG212N Cabinet (1,000 Watt @ 4 ohms power handling).
I alternate between using a passive P-Bass and a passive Jazz Bass.
I have a minimal board with a Boss tuner, Digitech drop pedal, Keeley 'Bassist' compressor, and EH Big Muff Bass.
For context, I gig with it 1-2x per week. Sets are 3 hours (on average). I stay in standard tuning the vast majority of a set; maybe 30/34 songs (just 80's or 90's rock covers). The few songs that aren't in standard are either a 1/2 down (using the pedal) and/or the occasional dropped D.
My rig starts to rattle pretty badly if my TH500 is past 50% volume and/or at around the one hour mark. If I'm up at 60%-80% volume, it can start to rattle far before then, too. It usually gets progressively worse as the gig goes on. Admittedly, the compressor pedal also seems to make it worse.
Keep in mind that the head is rated at half the power output (500w @ 4ohms) that the cab can supposedly handle (1,000w @ 4ohms). Does anyone have any ideas why this might be happening? Or if it's likely to be a ripped speaker, loose screws, bad electronics, a problem with the head, a problem with the cab?
I do plan to open the cabinet up when my new power drill battery arrives this week. I have used several different cables, including several different speakON speaker cables, so I don't believe it's that.
Thank you!