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2x25W at 4 Ohm TDA7492 Class-D Audio Amplifier Board Only
Will an 18.5V 3.5A 65W AC/DC Adapter Charger Power Supply designed for laptop computers work on this amp.
12vdc 3A power supply? I am currently powering this amp using a high quality 12vdc 3A regulated power supply. The specs say 14vdc is minimum to power the board but it seems fine driving 2 8ohm speakers using 12v. Any issues? brown-out?
Would this amp behave nicely in a car setup, simply hooked up to the battery and chassis ground, without picking up alternator noise? Also, would it make the dreaded turn on pop if setup in a delayed turn-on configuration?
This will work well in a car application, alternator noise should not be an issue if properly ground. You should have no issues with turn on pop if used with a power up delay.
Date published: 2014-09-23
Can this amplifier be bridged to send a summed stereo signal to one speaker?
Unfortunately this amplifier is not bridgeable.
Date published: 2014-08-01
Could I power this with two 9V batteries?
Technically you could assuming the batteries were in series, although it is not recommended. 9 volt batteries generally have very little current so they would not last very long. A 12V SLA battery would be a better choice but worst case scenario would be 8 high storage AA batteries.
Date published: 2014-05-13
I would like to use this amp in the roof space with 2 ceiling speakers and a Bluetooth adapter so I can play musi using my iPhone. However I need the amp to be in a box to protect it from being a fire risk. Any thoughts on how to do this?
There are plenty of ways to do this, it will be up to how much work you want to put into it. Some people build nice chassis for these with RCA, binding post and power connectors on the outside, while others simply put them in a wooden or metal box and just feed the wires through holes. Some people even leave them completely exposed, which will not hurt anything either as long as they are out of the elements.
Date published: 2014-04-22