Bass 165 mm (6.5 inches) midrange 80 mm (3 inches) tweeter 19 mm (3/4 inches) impedance 4 Ω nominal / music power 70 / 100 W nominal / music power mid-range 20 / 30 W characteristic sound pressure 90 dB outer diameter 165 mm cut-out diameter 142 mm. Installation Depth 66 4 mm outer diameter midrange 94 mm cut-out diameter midrange 77 mm mounting depth midrange 33.9 mm. The partially active 3-way top system in its class. A reinforced fibreglass paper membrane ensures dynamic, heavy basic sound reproduction with warm sound. Effective, open sounding and detailed mid tone are just a few attributes of the new PRS 165.3 3-way system. The reinforced, powder-coated metal basket ensures optimum stability and provides good ventilation of the strong ferrite drive system. The ventilated coil carrier in combination with the large core bore also provide the necessary cooling, this has a positive effect on the efficiency. A low-pass filtering in the signal source / amplifier source is required to connect the woofer. The 19 mm fabric tweeters play silky, soft and look unobtrusive. They reproduce fine, detailed and deliver a very clear image of the tweeter. Their very good round beam properties provide that extra in the tweeter nuances. They can be mounted in the mounting or surface-mounted housing and thus can be optimally adjusted in their beam characteristics. The PRS 165.2 and PRS 165.3 comes with a high-quality housing switch, which is equipped with elaborately designed air coils and premium film capacitors. Here too, a two-stage middle tone filtering with level adjustment by 6 dB / 12 dB is possible. The 80 mm mid-range drivers score with their hand-coated paper membrane and the stiffened metal basket, which has high stability. The whole thing is powered by a strong distance