Crackle when changing the volume knob, primarily right channel

Soldato
Joined
26 Apr 2004
Posts
9,793
Location
Milton Keynes
Hi guys,

Picked up a cheap Ariston AX910 (basically a Cambridge Audio A1) amp recently, which works well enough for it's purchased purpose, but I've noticed when I've listened to it, that the left audio channel is slightly louder, which I all but verified with a SLM.
Also when you turn the volume knob, theres a decisive crackle from the right speaker, and at higher volumes a lesser crackle from the left hand side.

Now this makes me wonder if the amp needs a bit of love and care, as listening carefully to the system playing I'm not sure if I can hear faint background crackle on the right hand speaker; although that could be the mind playing tricks.

Looking around, I've seen suggestions this sort of stuff is often caused by stuff like dry joints, but I'm no audio kit maintenance buff, has anyone had any experience fixing this sort of issue, and would going round the solder joints with a soldering iron inside the amp likely resolve the issue [or make them worse], or do you think there are likely more serious issues with the amp.

As it still works, I'm loathe to get rid of it or spend money, especially as it does what it needs to, and Im the only one who really noticed the deficiencies, but it'd be nice for it to work 100% and I'd imagine it'd sound a little nicer if the apparent deficiencies were knocked on the head.
 
A crackle on one of he speaker channels could be muck on the contacts for the volume control. Assuming that the cost of a can of electrical contact cleaner* falls under the radar of "I don't want to spend any money" then that would be my first line of attack.

A dry joint I'd expect to lose or gain the sound on the channel as the amp heats up.


*try ****** to see what to look for

M A P L I N
 
Thirded. Normally there's just gunk in the controls, cleaning out all the pots and switches with some contact cleaner (or rubbing alcohol if you're feeling cheap) will get rid of all the crap.

It'll cost you under a fiver, and will then last you for other bits and bobs.
 
Thanks for the advice, I'll get some of this stuff, clean the amp out internally and the contacts and see whether it helps :)

Theres a M***** fairly near me so I'll try and drop in there on the day of and see if they have any, I've got the suspicion without these issues the amp will probably sound nicer hehe
 
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