FRIDAY, March 29, 2024
nationthailand

Build your own speaker system

Build your own speaker system

Hooked up wirelessly, portable NP1540 units from LG get really loud

Tiny in stature but every bit as loud as you want it to be, the NP1540 portable Bluetooth speaker from LG is easily linked up in pairs for full stereo without the need for connecting cords.
A mere 83x83x95mm and a third of a kilogram, this speaker is made for carrying around with you.
By itself, the NP1540 is a one-channel speaker with 2.8 watts of output, but that’s easily doubled. At the back is a sliding switch that flips right and left for a two-channel set-up. Slide to the left on one NP1540 and to the right on the other one and press and hold the power button on both. The two speakers take about 30 seconds to establish a stereo connection.
 Then, you can establish a Bluetooth connection for the dual system. Your smartphone will identify them as “LB BT Box 2”. (If the speakers failed to link, the phone sees just “LB BT Box”).
Once you’re set up, you just turn on one speaker and both are still stereo-linked and ready to roar. Paired up, you just switch off one speaker to shut them both down.
The NP1540 uses both voice and LED signals to report its status. They’ll tell you they’re connected, for example. When the battery charge is low the LED light by the power button turns red and blinks. When the two speakers are linked, the dual-link blue LED light glows.
You have a 700mAh Li-Polymer battery that can be recharged via a microUSB port. Recharging takes about two and a half hours. Fullycharged, the battery will last about five hours.
There’s also a portable-in 3.5mm stereo jack for connecting to an MP3 player.
During my test I was impressed with the loudness and clarity of the speakers paired up. The sound was loud enough to easily fill my large living room and not at all distorted even at the highest level.
I could pick out the highs and middles quite clear, though the bass was not as deep and powerful as I like it. The NP1540 packs a 2.25-inch full-range speaker with impedance of four ohms.
 With the crisp highs and middles, the linked speakers are good for light music, such as pop. My “Sax for Sex Beautiful Night” album sounded lovely, for example. All the instruments came through beautifully.
The NP1540 retails for Bt1,990.
 
KEY SPECS
 
Amplifier: 1x2.8 watts
Speaker: 2.25-inch full-range speaker
Impedance: Four ohms
Battery: 3.7V / 700mAh / five hrs (50 per cent volume)
Size: 83x83x95mm
Net weight: 0.37 KG
 
nationthailand