Logitech Z623 Captivating THX Sound Repair

The Z623 Captivating THX Sound is a THX-certified 2.1 multimedia speaker system designed for desktop and home entertainment use. It pairs two satellite speakers with a dedicated powered subwoofer and a built-in amplifier to deliver punchy bass and clear mids/highs. The system uses durable materials — an MDF subwoofer enclosure for reduced resonance and sturdy ABS plastic satellite housings — and includes versatile wired inputs for computers, TVs, and other sources. Key features include THX certification, a wired control pod with headphone jack and volume control, and RCA plus 3.5 mm connectivity.

The Logitech Z623 Captivating THX Sound can be identified by the model number (M/N S-00095). The model label is on the Z623 Captivating THX Sound can be identified by its THX certification label and the Logitech model labeling on the underside of the subwoofer and the base/underside of the right satellite (control pod integrated on the right satellite). This label lists the model (M/N), part (P/N), and serial (S/N) numbers.

• Form Factor: 2.1 THX-certified desktop/home speaker system (two satellites + powered subwoofer)
• Certification: THX-certified (marketing/materials and support reference)
• Total Power (peak): 200 W (peak, as marketed by Logitech)
• Amplification: Built-in powered amplifier in subwoofer (integrated)
• Subwoofer Driver: 6.5-inch driver in MDF enclosure (sturdy construction for reduced resonance)
• Satellite Drivers: Two full-range satellite drivers in durable ABS plastic housings
• Inputs: 3.5 mm stereo input and RCA stereo inputs (supports PC, TV, game consoles)
• Controls: Wired control pod (integrated with right satellite) with power/volume knob and headphone jack
• Cables Included: 3.5 mm to RCA cable (for connecting source devices)
• Warranty (manufacturer): 1-year limited hardware warranty (Logitech support documentation)

Common repair-relevant faults include no audio output, channel dropouts or distorted sound, and blown subwoofer drivers or loose internal wiring. Diagnose by verifying power and input cables, testing the system with a known-good source and cables, checking the wired control pod and headphone jack for continuity, and inspecting driver cones and internal solder joints for visible damage.

For additional troubleshooting help, visit: Visit Logitech Support (support.logi.com) and the Z623 product/support pages for drivers, troubleshooting, and warranty claims. The scraped support article references Logitech support and warranty information.

1-year limited hardware warranty as noted by Logitech support documentation.

• https://support.logi.com/hc/en-us/articl...
• https://www.logitech.com/en-us/product/z...