Heathkit AR-4
The Heathkit AR-4 is an acoustic suspension speaker. That means a sealed box, here in a walnut veneer cabinet. It's a two-way system with a 10-inch woofer and a 3-inch tweeter, crossing over at 1,500 Hz. It's rated at 8 ohms impedance and handles up to 60 watts of program material. The frequency response spec is 55-20,000 Hz.
Past those specs, the record on this model is thin. The sources available to the Archive document no production years, original price or dimensions. The AR-4 shows up in period Heathkit advertising alongside the company's amplifier kits. High Fidelity (August 1957, p.14) ran Heathkit's own promotional spread touting its "easy-to-build designs," but that copy covers the W-5M and W-3AM amplifiers, not the AR-4 speaker.
The spec sheet above is about all that survives. No owner reviews, market prices or common repair notes have surfaced in the research so far. If you own an AR-4 and can fill in the gaps - when it was sold, what it cost, how it sounded - the Archive would welcome the record.
- Type: 2-way acoustic suspension speaker
- Drivers: 10-inch woofer, 3-inch tweeter
- Crossover: 1,500 Hz
- Impedance: 8 ohms
- Power handling: 60 watts max program
- Frequency response: 55–20,000 Hz
- Cabinet: Walnut veneer, sealed
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