It's these speakers:



PCT6551
5.25” & 6.5” COMPONENT 3-WAY SYSTEM
PCT 6.5” Component Mid-Bass with Carbon
Reinforced Woven Glass Cone
PCT 5.25” Component Mid with Carbon
Reinforced Woven Glass Cone
PTS28 - 28mm Silk Dome Tweeter
PCT 3-way Component Crossover
PCT Component Mid Carbon Reinforced High Denier Woven Glass Cone
Filleted Butyl Rubber Surround
Aluminum Billet Phase Plug
High Temperature Kapton® Voice Coil
Former with Nomex® Insulation – 25mm
Oversized Flat Spider
Bottomless Motor Geometry
Proprietary High Gauge Steel Frame with Chrome-Plated Back Plate and Magnet Cover
PTS28 — Pure Silk Dome Tweeter in a Threaded Machined Aluminum Housing — 28mmPCT Component Crossover
Linkwitz-Riley Alignment with Zobel Impedance Compensation
Audiophile-Grade Mylar® Caps and Air Core Inductors
Gold-Plated, Solid Brass Compression Terminals (up to 12-Gauge)
Power Handling: 350 Watts RMS
Frequency Response:
45Hz – 25kHz, +/-3dB
Sensitivity: 93dB 1w/1m