Interesting article below. To summarize they say Bass guitars that cost about $180 should not get upgraded with $1000 add ons by technical types. The idea of adding a preamp or a Nordstrand Pickup would not be feasible and could be shameful in regards to music instrument production. Imported bass guitars that start at the modest price of $180 are from Asian ports. These imported bass guitars makes excellent starter guitars for the would be musician embarking on a music career.
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Tech Bench – Mod Squad: Potent Pot Mod.
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?