Instead of using a Tube Screamer-style boost to sheer off the low end completely (making the tone thin), the Revamp approach utilizes a dynamic high-pass filter. We aren't cutting the lows; we are tightening them.
The Fix: Use a multiband compressor or a smart gate before the amp section. This allows palm mutes to retain their "chunk" without the woofy "flub" that plagued earlier tightfault tones. The goal is a low end that punches, rather than rumbles. tightfault revamp 18 9
You may be referring to “tightness fault” during a revamp of equipment item/tag 18/9 — e.g., a heat exchanger, flange, or valve train that failed leak testing after revamp. Instead of using a Tube Screamer-style boost to
If that is the case, here is a useful short text for diagnostics and reporting: Nonfunctional
Diagnosing Tightness Faults in Revamped Equipment (Tag 18/9)
After revamp of unit 18/9, a tightness fault was observed during pressure test (hydrostatic/pneumatic). Common causes include: