Sorry to hear about your troubles. It sounds like your speaker may need to get serviced. Warranty and non-warranty claims are not handled here on the forum but I can point you in the right direction to help you out! Here are a couple of options that you could choose from:
• Submit a Warranty Claim or Service Inquiry with our Technical Support team by logging onto www.alesis.com/support. Select Warranty Claim or Service Inquiry from the drop down menu.
• For quicker support, call your nearest Support Office. An experienced support agent can assist you over the phone. Their office contact numbers are listed on that page.