18v power supply = Altec Lansing AVS300 speakers electric cable plug ac wire dc

Multitester tested for voltage. This is a voltage EQUIVALENT version adapter forAltec Lansingvoltage regulator, power supply, powersupply, inverter, adaptor forAC input 120V and DC output:18V 0.65A (18VDC 650mA). Amperage can be higher, but never lower. Round barrel connector with a hollowPOSITIVE center. Please check your device for correct electrical compatibility. Photo is generic. Adapter size, color or shape may differ from photo. May be brick-type or wall-type.Special heavy wrapping isprovided to protect the prongs. S&H in the contiguous USA is $6.(insured shipping).Please see other interesting items by JGritUSPS DELIVERY TIME: As stated in the item listing, seller will drop-off your item to the USPS within 4 days of receiving cleared payment. How long it takes to deliver to your door is strictlywithinUSPS control and not within the control of seller. Please leave 5 stars for seller 4 day drop-off time. Thankyou.