JBL Extension for CBT 1000 Line Array, six (6) 165 mm (6-1/2") high-excursion LF drivers, 1500W cont pink noise (6000 W peak), 8 ohms (note CBT1000+1000E is a 4 ohm system), linking coupler bracket included, 100 cm tall for 200 cm tall CBT 1000+E array, connect CBT1000 and CBT1000E in parallel. Combined with CBT 1000, system response is 38 Hz 20 kHz with well controlled pattern to 200 Hz.