Generator Noise
Generator Noise In the past several months I have had to take interest in Generator noise. Back in Aug my wife and I traveled from Mass. to the West coast and did a bunch of National parks. We wer...
Forum Discussion
I have a Cummins Onan RV QG 3600 LP generator in my 2013 LTV Unity. It is rated for 68 dB(A) at 10 feet running half load. Cummins Onan states that installation can further reduce sound level. I have confirmed this as I have measured 66 dB at 10 feet with my Radio Shack SPL meter while running the air conditioner, 60 dB at 23 feet. To reduce sound levels further I will soon be adding the Onan Resonator (155-2449) to the exhaust pipe, a clamp-on Super Trapp 5S with resonator and three diffuser discs (to be in place only when using the generator), and as many layers of Low-E automotive insulation as will allow required clearances in the generator compartment. I have read that the Onan Resonator and Super Trapp will virtually eliminate exhaust noise to the point that the sound produced is essentially vibration and internal engine noise. I am hopeful for better than Honda-like 58 dB at 23 feet.
