2. amps-preamps
  3. 185725-78903

Tube microphonics

Hello. I am using Audio Research Ref 750 mono blocks and they in front of my speakers but off to the sides. Someone told me on another site that if I move the amps beside the speakers and not in front of them , my system will improve immensely. It will reduce tube microphonics. What are your opinions of this and I just want to say that I’m very new to tube amps so this is something I never heard of before. Thank you all. 

128x128Ag insider logo xs@2xtattooedtrackman
jetter
3,082 posts
 

My experience echoes Mulveling's

Never had a power tube be microphonic in the slightest.

wolf_garcia
6,744 posts
 

In a "combo" guitar amp the entire amp including the tubes are in the same box as the speaker. Since the mid 30s. It works great. 

tattooedtrackman's avatar
Ag insider logo xs@2x
tattooedtrackman OP
887 posts
 

@mulveling @jjss49 @jetter  Thanks for clarity on tube dampers on tube power  amps. @mulveling  Hell no I’m not gonna spend almost 2k just for looks. Wouldn’t even spend 50$ just for looks on a tube damper without it doing nothing. 

onhwy61's avatar
onhwy61
5,276 posts
 

If you think about how nearly all loudspeakers radiate bass pressure waves, then it really shouldn't make much difference if the power amp is behind or in front of the loudspeaker as far as exciting tube microphonics.

tattooedtrackman's avatar
Ag insider logo xs@2x
tattooedtrackman OP
887 posts
 

@onhwy61   I was thinking the same from the very beginning too. Plus my speakers are B&W 800 matrix. Top and bottom bass also. They act like having 2 subwoofers on ea speaker. 

More to discover