My Altec Lansing VS4121's volume control became faulty

like how?

like i slightly touch the volume control, the volume of sounds will change A LOT!!!!!!! is like not accurate anymore!
Sometimes even i slightly turn right to volume up, the sounds volume is actually goes down. Sometimes i turn left to volume down, the sounds volume goes up!

But i heard this is common problem

mm... common stuff
but forgot the solution. try oiling the volume knob potentiometer with WD-40? or some sewing oil.
it should smoothen the connectivity. if not I guess you've got a busted volume pot

guys, saw this product still in market, rm225, is it worth to get one?
read a lot of positive review from web.
sorry im noob in audio

still have? RM225 will a bit expensive?
i get mine at RM180 from PC fair, i also don't know what is the retail price

DUDE!
if it's still available brand new, get it!
it's a rare product!

this set got quite a number of problems.... surely i will prefer atp3
eg. transformer kaput (most common)

thx pal!

Looking 2.1 PC Speaker
(any better than my previous Sonicgear A5)
budget: under RM300
going to pair it with my usb Creative 5.1 Pro sound card,
mainly for: music,movies & some games
thinking for AL 4121 or the new AL 4621,
can anybody give me some recommend?
thanks.

Still using the AL VS4121. Already 7 years and it is still working flawlessly. A rare system.

Haha. Good to hear that bro.

Haha It sounds much better after installing SRS SandBox. A must collect for BASSHEAD.

Hi all,

My subwoofer seems to have lost some of its woof.
It's not pushing out as much air as before.
Can anyone tell me what might be the problem here?

Anyone can advise vs4121 main board information? Code or any?

Wow..still got fans for this speaker set. Back in 2006 I mucked around with this set, actually still have mine sitting in the store, may re-use someday. I modded mine to what I thought was great and not to break the bank. I can't recall all the stuff I did to it but it was extensive.
1) Replaced main chip amp to TDA7375 (slightly higher output) from existing TDA7377 (I could be mistaken ah..so long ago)
2) Upped the regulator to 12V from 9V to increase voltage to opamp circuitry.
3)Increased PSU cap for higher ripple current
4)Changed a couple of opamps (can't remember if SMD type, think it was to LM6172 from jelly bean types.
5) Padded the interior of the subwoofer compartment. This seriously damped the vibrations and also makes the woofer more power hungry. Damping does incur some efficiency away. Take some loose some..no free lunches.
Lastly the satellite speakers are glued sealed tight and any repair require ripping it apart in whatever method you choose, risking breakage. This speaker set wasn't designed for repairs and mods. Use as is. Lastly, never found any circuit diagram. Overall improvement to the sound made it more enjoyable to listen, tighter bass at high volume and for whatever its worth. No going overboard on this, not worth it. Its still a RM260 worth speaker system, nothing more. Lastly, I'm not offering to do any of these mods for anyone. My interest is not this stuff anymore.

This post has been edited by bsl555: May 19 2018, 05:17 PM


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Hi, do u guys knows how i can use this altec lansing set in my car?how to install it in a car?

Still using altec landing vs4121 (bought in 2009) but now connecting to TV , most of my condo neighbors cant tahan when I start "frying" song. So no good reason here to upgrade the sound system...

Yeah man. Rare system I am still using VS4121 and it is still rocking. Hard to find a better gem.

Hi guy , my VS4121 9 pin male jack were broken due to my pet , can any one help me out with the pins configure? thanks in advance.