Maybe you can ask here: http://forum.audiogon.com/cgi-bin/fr.pl?vaslt&1097358102&read&keyw&zzsimon%20yorke
13 responses Add your response
I have utilized several compressors for my maplenoll. I now use a JUNAIR compressor that is pretty quiet but i could hear it if it was in the same room. I put it in a closet and i can not hear it. Junair also sells a compressor that is encased in a sound insulated case that you can not hear but its a little pricey. Not sure of the pressure a et2 takes so depending on the pressure, there might be many alternatives. If you look on my maplenoll string, there are several references to compressors particularly WISA superquiet and others.
Ckniker, I use the Kuzma Airline too and also the Sil-Air Compressor. Nevertheless one has to run the Sil Air Compressor in another room (I do so too)because every 8 minutes you hear a sharp sound (zzsch) when the air echausts. People told me that the Jun-Air Troll/Minor 3-4 should be even better than the Sil Air.
Even pumps marketed as whisper quiet typically have >30db noise. I don't know what pressure/flow rate the ET arm requires, but but if you are getting by with a low pressure pump, there is no reason to add the complexity, condensation issues, and expense of compressors. You might try the pump in an insulated & vented wood box. I cut noise of my 30db Rena 400 air pump in half by encasing the pump in a carapace of soft modeling clay, and placing pump and flow tank inside a plywood box insulated with several layers of cut-up acoustic ceiling tiles.
I used a rena pump (aquarium pump) to float my platter on my maplenoll. Its a pretty low pressure unit. it is however very quiet and if you can get away with the low pressure, is a great unit. Now that I went with the large platter 90 lbs, i need more pressure than the rena could generate. it develops about 4 to 6 psig.