230v to 110v ???

There seems to be a lot of issues with it! The used to be a great speaker company, but that all stopped about 10 years ago.

https://www.google.com/search?q=altec+lansing+mx6021+power+supply

A constant low hum is a sign of a power supply issue. You need to check the capacitors that filter the ripple current and you need to check the diodes that convert ac to dc

Hi Dan Bushey, I'm glad you found a solution, what does not close me is that Altec Lansing, which needs a DC 18volts and 650mA power supply, works with a source that delivers 9 volts and 19KW (???)
Maybe it will be 19 volts and 1.9 Amp?
Comment please
Greetings Franco Dosil

Hola Dan Bushey, me alegra que hayas encontrado una solucion, lo que no me cierra es que Altec Lansing, que necesita una alimentacion de DC 18volts y 650mA, funcione con una fuente que te entrega 9 volts y 19KW(???)
Tal vez sera 19 volts y 1,9 Amp?
Comenta por favor
Saludos Franco Dosil
https://www.manualslib.com/manual/4749/Altec-Lansing-Avs300.html?page=2

Use system restore to a point when the speakers were working. Then take it from there.

what you need is a system with adapters, Europe uses one type, new Zealand and Australia use another, and of course America and Mexico you will need a transformer that will accept all of these since the used voltages changes, the America's use 110 volt systems while the Euro countries use the 220 volt system, just because a plug will fit into a socket doesn't mean its compatible with the system used in each country, if you look here you will see the different ones used in each country
http://buyersguide.bargainoffers.com/plug_adapter_guide.shtml and you will need a converter like one of these depending on the amperage your system needs, along with the reducer for the required 9 volts for whatever it is your trying to use http://www.amazon.com/Travel-Voltage-Power-Converter-Adapter/dp/B001AHTEEU

This speaker is using a USB to draw its power. You can try using other USB ports on the computer or use USB chargers (Apple, HTC, Android phones, etc) to test it, if all else fail then you may need to return it because its defective.

What you need is a stepdown transformer. One that works by reducing the 230v down to 110. You should find one on places such as Amazon.

Check the manual..It's on the Roland site

In that unit , it's most likely an auto-switching power supply ie; universal 105 - 230 volts AC 50-60 hz

HI, maybe theres been a bit of confusion but your Altec Lansing ADA745 speakers shouldn't need any drivers.
Its kind of similar to you plugging in a pair of headphones into your cumputer, they should work just fine.
Are you not getting any sound? Post the details of your PC (is it a dell?)
model number etc... and describe your problem
You probably need audio drivers for your audio device(inside your pc on your motherboard),