just what I thought, I came across this via Fender etc.. bass amp fan type : therma cool 120×38 mm (60-60-38) 110 vac/ 72 cfm/ 0.22 amps/2200 Rpm/ 39 dB N.L. thanks for your insight
cooling fan inside SWR working pro 400 head has been very,REALLy really loud, and I've been wondering if it needs to be replaced any info/help would be appreciated thank you