A series of sound projectors in a solid aluminium metal case and with quality sound reproduction is realised in a directional and bi directional version.
SP-30R is a Æ140x160mm with 87.5dB/1W/1m and a band of 180-16000Hz; power of 20/10/5W; weight 2.1kg. 
SP-30RB is a Æ 140x160mm with 86dB sensitivity a band of 180-16000Hz and a power of 10/5 and 2.5W; weight 2.7 kg