It will take longer to charge the device
Yes
12v 1.5amp power adapter is 18 Watt, can't load more than 18W power consumption,3amp power adapter can load 36W.
No. If it works at all, it will be underpowered, and possibly damage the speakers. To power 12V speakers, you have to have an adapter with EXACTLY 12V (no more, no less), and at least 1A. You could hook up a 12V 4A adapter if you wanted to, your speakers would just only draw 1A of power. Make sure you use a 12V adapter though!!
You would overload and damage the device and/or the adapter.
A 12v AC adapter can be use to power devices that requires 12VDC and up to 500mA. It can also be use with electrical devices that require power but do not contain internal components to derive the required voltage and power from the main power.
No, the replacement adapter has to be of an equal or greater value but never lower.
wherw can i buy a 12v23va adapter
Target is by far the best place online to purchase your 12v led TV adapter. They offer exceptional quality at a reasonable price. The most preferred brand is Sony.
Possibly, but not if you want to invalidate the warranty to your appliance.
no, different voltage could fry solid state components.
i need a 12V 55VA Adapter for my Christmas Tree where can i get one and quickly
From what? If you need 12VDC for temporary use, there is a very good 12VDC source in your PC power supply.