Crown CX-844

The Crown CX-844 (also known as Crown Pro 800 Series CX-844) is the flagship, top-of-the-line open-reel tape recorder from Crown International (Elkhart, Indiana, USA), produced from the late 1960s through the mid-to-late 1970s (examples as late as 1977). It was the pinnacle of Crown's solid-state professional/prosumer lineup within the Pro 800 series (often dubbed the "Big Red Monster" by enthusiasts for its imposing size, power, and occasional red accents in custom builds). The "CX" designation indicates the deluxe electronics package with plug-in circuit boards, front-panel bias/EQ adjustments, bass/treble controls, echo/sound-on-sound, three-speed equalization, and advanced mixing/monitoring—making it Crown's most capable machine for multi-track semi-pro/studio, broadcast, mastering, or institutional use.

This 4-channel deck was designed as a "portable professional recording studio" in one unit, with simultaneous multi-track recording/playback, Trac-Sync modules (allowing record heads to function as playback for overdubs/sync), and exceptional tape handling. It is widely regarded as the absolute "top dog" and "holy grail" of Crown production models—rivaling high-end contemporaries like Ampex AG-440 or Studer in reliability and musicality while being more serviceable and American-built. Collectors prize it for its warm, dynamic "tape magic" sound (slight high-end contour/bloom, high headroom), overbuilt construction, and rarity; restored examples sell for $7,000–$9,000+ (or more in custom walnut cabinets).

Key Technical Specifications 

• Tape Speeds: 3.75 ips, 7.5 ips, and 15 ips (three fully equalized speeds with front-panel selection; NAB/CCIR switching; some sources note optional 1⅞ ips in rare configs, but standard is 3.75/7.5/15).

• Frequency Response (±2 dB typical): 30 Hz–25 kHz+ at 15 ips (record/play); 20 Hz–20/25 kHz at 7.5 ips; excellent extension with characteristic slight high-end contour for warmth/bloom (real-world often exceeds specs on premium tape like Scotch 207/406).

• Signal-to-Noise Ratio: 55–60+ dB (overall/record-play; strong for 4-channel multi-track due to low-noise design and quality heads).

• Wow & Flutter (RMS wideband): ~0.05% at 15 ips; ~0.09% at 7.5 ips (top-tier from massive flywheel, hysteresis capstan, and neoprene belt).

• Track Configuration: ¼-track four-track (four discrete channels; simultaneous 4-channel record/playback or multi-pass overdub modes; bidirectional capability for extended sessions).

• Heads: 3-head design per channel (erase, record, playback); precision micro-gap permalloy heads with hyperbolic contour, shock-mounted/removable for alignment; off-tape monitoring; Trac-Sync optional for sync overdubs.

• Reel Sizes: Up to 10.5" NAB professional (HAP adapters standard; supports 2400'+ reels for long multi-track projects).

• Motors: 3-motor transport (hysteresis synchronous capstan with massive flywheel/neoprene belt; separate plug-in torque-controlled reel motors—no tension arms; electromagnetic DC braking for ultra-smooth, padless stops ~3 sec from full speed).

• Timing Accuracy / Speed Stability: ~99.8–99.9% (minimal drift; fast wind/rewind ~60 sec for 2400').

• Other Features:CX deluxe electronics: Plug-in modular PC cards (easy service/upgrades); front-panel bias/EQ per channel/speed; center-detent bass/treble; echo/sound-on-sound; mixing inputs (up to 8 mics with options, multiple mic/line per channel, unbalanced standard; balanced XLR via transformers); dual (or multi) VU meters; headphone monitoring; source/tape switching; auto-stop; full logic pushbutton controls (feather-touch, buffered); remote record/control optional.
  Inputs/Outputs: Mic/line (high impedance or optional balanced); line outputs up to 14V+ (600 ohm balanced/unbalanced).
  THD: <1% at 0 VU (1 kHz); high headroom/low distortion.
  Power: ~140–200W, 117 VAC 60 Hz (50 Hz available).
  

• Dimensions / Weight: ~19" W x 24–24.5" H x 10–12" D (larger rack-mountable footprint for 4-ch electronics); ~60–64 lbs (heavy, overbuilt aluminum chassis; custom tall cases ~30"+ with handles/feet).

• Original Price: ~$2,995–$4,900+ (fully optioned; premium pro positioning—e.g., ~$4,900 in 1977 with full mic inputs/options).

Design and Build Overview

The CX-844 used the advanced Pro 800 transport (logic-controlled pushbuttons, no tension arms—torque motor control for precise/pantograph-like tension, straight-line threading for editing). Electromagnetic braking ensured gentle, consistent operation across large reels. CX electronics were Crown's premium solid-state: modular plug-in boards, front adjustments, echo, and 3-speed EQ (vs. SX's simpler 2-speed). It was monaural-constructed per channel (mirror-imaged) with shared power supply for reliability and serviceability.

Built overbuilt for longevity (field-replaceable motors/heads, rugged chassis), it prioritized professional multi-track use—broadcast/TV standard, small-studio mastering—with warm, blooming sound (dynamics/headroom from slight contouring). It was the largest regular-production Crown (bigger than 2-ch CX-822/824 siblings), often custom-racked or cased for portability despite weight.

Today, these are ultra-rare holy grails for vintage pros/audiophiles. Restoration needs include recaps, bearings, relays, head relapping (low-hour units exist). Manuals cover Pro 800 series (CX/SX). Crown exited tape production ~1977 to focus on amplifiers.