What is causing this crackling I am hearing ?
- By logdrum
- Amps and Cabs [BG]
- 12 Replies
The power amp in the Subway Bass 800D is NOT exactly the same as design as the Demeter.
Important differences are that the Subway amps are rated (with safety/EMC certifications) for operation of 800 watts RMS at 2 ohms, and has significantly different master section drive management and algorithms.
Assumptions can’t be made across different manufacturers, even if they happen to use the same power module.
I just read the TT-800 manual ( hint GAS attack ) and I appreciate all the technical explanations you and the Mesa team have given specially on the power amp, in the FAQ section of the manual, My buddy did ask Demeter to equip his older VTBP-201S with an 800 watt power amp and it does behave differently than the subway WD-800 I borrowed for almost 2 weeks. I had a chance to compare them side by side for a few days. The WD-800 and I am the subsequent amplifiers are definitely rooted in tube power designs
I think many of us old guys do not play loud to appreciate/differentiate the designs in the power section of modern class D amps vs powered speakers and the like or just adding a class D power module. Loud may not be your default operating mode but you should at least try it once. Of course be very mindful of your speaker capacity and setup.