Alphanso PA640 is a standard PA speaker pair suitable for home environments. Recommended room size 4000sqf. This stereo pair is incredible for home practice, watch films or listening to music. The passive crossover is well-tuned at 2.1 kHz and can save the internal speaker from astonishing frequencies. These are lightweight series and capable of handling sufficient power respect to their sizes. PA640 has two 15-inch speakers in both cabinets and a 4-inch piezo tweeter. 3 inch voice coil inside woofer with a 6-inch magnet is good enough to shake the 15-inch woofer. Crossover frequency can be tweaked a bit by changing the capacitor inside, but not recommended for non-professional.

      Alphanso PA640 has been designed as of modern speaker technology. This one is able to handle upto 640 watt (320w+320w) which is plenty for hall room or theatre. PA640 can be great for vocal signals, keyboard player or electric drums player too, but not recommended for guitar players. Your instrument’s response would be very bassy and sharp.

Specification
☸ Design: Public address stereo speaker
☸ 320+320 watts power handling @ 3.9 ohms
☸ Components : 4 x 15″ MF driver speaker with
      3in/7.62cm voice coils, and 4 x 4″ HF driver
      speaker with 2in/5.08cm voice coils
☸ Frequency response : 23 Hz – 19 kHz
☸ Sensitivity : SPL 121 dB at 1 watt at 1 meter (mono)
☸ Internal crossover : None
☸ Connector : neutrik speakon
☸ Enclosure : Plain particle board, faux leather
      and nylon mesh fabric
☸ Dimensions (H x W x D) : 33 x 14 x 12 in
      / 83.8 x 35.6 x 25.4 cm
☸ Handling weight : 23.9kg / 52.7lbs (1 pair)