AudioControl A275C Altitude Series 2.75" Component Midrange Speakers, 50W RMS, 4 Ohms (Pair)

The AudioControl Altitude A275C is a 2.75" component midrange pair built for enthusiasts who demand precise, warm midrange and straightforward system integration in 2- or 3-way setups.

• Power (RMS): 50 Watts — continuous power handling per driver informs how much clean, unclipped midrange output you can expect from a suitable amplifier stage.
• Impedance: 4 Ohms — compatible with 4-ohm amplifiers and crossovers, influencing available headroom and damping in the midrange band.
• DC Resistance (Re): 3.6 ohms — a precise electrical characteristic used in crossover and amplifier matching for accurate filter and load calculations.
• Voice Coil: 0.62 in (16 mm) — a larger coil helps heat dissipation and controlled excursion within the midrange, supporting stable output under load.
• System Frequency Response: 125 Hz to 20,000 Hz — covers low to high midrange with extension toward the upper highs, enabling flexible integration in multi-driver arrays.
• Sensitivity: 82.6 dB 1W/1M | 85.6 dB @ 2.83 V/1M — defines how loudly the driver will play from a given input, aiding crossover and amp planning.
• Overall Diameter: 2.85 in / 72.3 mm — compact footprint suitable for tighter mounting environments.
• Cut Out Diameter: 2.55 in / 65 mm — the required hole size for installation in compatible locations.
• Mounting Depth: 1.28 in / 32.5 mm — overall depth to consider when planning enclosure or door panel space.
• Total Depth: 1.45 in / 37 mm — full depth including surround, important for fit in shallow mounting pockets.
• Dust Cap: Lightweight Aluminum Dust Cap with anti-phasing design — enhances sensitivity and helps extend the upper frequency response.
• Cone: Precision-Molded Glass Fiber Cone — delivers warm, accurate sound reproduction with controlled breakup for clear midrange clarity.
• Surround: Durable Butyl Rubber Surround — maintains low-frequency control and consistent excursion under real-world driving conditions.
• Basket: Enhanced Steel Slimline Basket — provides a rigid mounting structure with a space-saving, compact form factor for easy installation.
• Inline Filter: In-line Filter — enables precise frequency control for clean crossover integration with other speakers.
• Installation: Designed and Engineered in USA; Simplified Installation with Dual mounting options, direct wiring, and universal sizing — streamlines integration into a variety of vehicles and mounting scenarios.
• In the Box: (2) A275C Speakers, Manual

In a real car audio build, the A275C serves as a dedicated midrange path within 2- or 3-way configurations, delivering warm, detailed mids with predictable power handling and straightforward installation. The inline filter and slimline basket simplify crossovers and fitment in compact spaces, while the glass fiber cone and aluminum dust cap provide a balanced blend of sensitivity and upper-frequency extension for a coherent overall soundstage.