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joule la150mkII- preamp

hi guys,

i have a Joule  lA 150 se [mk ii ]. the gold knobs on them look dirty . i was looking for a way to remove the knobs, but i just can get them off. no screws or hex nuts or holes. can anyone help. or , can someone recomend a way to clean the knobs while on the pre amp without damaging it?

thank you

sy

syhilly0107
aewarren
643 posts
 

To clean the knobs while on the unit, try a mild soap and water solution such as dishwashing liquid on a cloth. If this does not remove the "dirt", it is probably because some of the thin plating has worn off the knob from the oil on your fingers. Consider it "patina" and continue to enjoy the music.

syhilly0107 OP
10 posts
 

Thank you so much guys, really appreciate all your help.

 

sy

tweak1
3,656 posts
 

Either 3% vinegar or h2o2. Apply then let soak a minute or so then clear with clean water/distilled or RO

syhilly0107 OP
10 posts
 

yes , but to do that i need to remove the knobs and for some reason, they do not come off. . i am trying, but afraid i will break them

atmasphere's avatar
atmasphere
11,793 posts
 

@syhilly0107 They are held on by 2 Allen drive set screws, 1/16" driver takes them loose.

DO NOT try to pull them off without loosening the screws!! You may find that the shaft of the control comes out with it. The balance control is nla and the volume control is fragile also (but replaceable.

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