AR-4x Condition Block (Blond Birch / FX72617 & 18). Overall Condition: Excellent vintage condition with fully functional drivers and preserved acoustic-suspension integrity. Cabinets retain its original birch veneer (blond finish) with clear lacquer intact and no refinishing. Veneer shows only light, age-appropriate wear consistent with late-1960s AR production. A tiny chip on one corner and what appears to be a chip repair on other corner of FX72618 as seen in photos provided. Drivers: Original 8″ cloth-surround woofer and 2.5″ cone tweeter present and operating correctly. Woofer suspension remains compliant, with no hardening or air leaks. Tweeter produces clean high-frequency output across all program material. Controls: Tweeter level control rotates smoothly and responds properly. No dead spots or intermittent dropouts. Crossover & Internal Components: Original crossover network intact. No evidence of non-factory modifications, replacement drivers, or modern parts. Cabinet: Factory birch veneer with authentic blond finish. Edges, corners, and seams remain tight. Grill frame solid and square. Grill Cloth: Original AR linen-style cloth with uniform color and no tears. After Market size appropriate badges included. Testing: Speakers have been load-tested at moderate listening levels. No distortion, rattles, or cabinet resonance. Acoustic seal remains tight, confirming proper AR-4x low-frequency performance. This unit retains its factory birch veneer, original drivers, acoustic-seal warning label, and correct late-run AR typography. A clean, authentic example of one of AR’s most respected acoustic-suspension designs. ? Cabinet & Finish. Factory birch veneer (blond finish). Clear lacquer intact; no refinishing. Late-1960s birch grain pattern consistent with FX-series production. Light birch cabinets were lower-production and are more desirable today. ? Drivers & Components. 8 acoustic-suspension woofer with cloth surround. 2.5 wide-dispersion cone tweeter. Original crossover at 1.2 kHz. Tweeter level control present and functional. All components appear original and period-correct. Woofers play cleanly with strong low-end response. Tweeter functions properly across level settings. No distortion, rattles, or intermittent dropouts. Cabinet is airtight, maintaining proper acoustic-suspension behavior. The label typography, acoustic-seal warning block, and birch finish all match late-run AR manufacturing. This is an authentic, original-finish cabinet with no refinishing or modern veneer work. System type: 2-way acoustic suspension. Frequency response: 45 Hz – 20 kHz. Recommended power: 15W minimum. Dimensions: 10 × 19 × 9 in. Weight: 18.5 lb.