Altec 601A
A coaxial 2-way high frequency speaker with extended range and high efficiency
Overview
The Altec 601A is a coaxial 2-way speaker built for full-range reproduction. A high-frequency driver and a low-frequency unit share a single frame, and the pair is meant to run with the N-3000A Dividing Network. Altec called it the "Duplex." The design aims for smooth response across a wide band, with the emphasis on high-frequency clarity and efficiency.
Specifications
| Product type | Coaxial 2-way |
| Impedance | 8 ohms |
| Frequency range | from 3000 to 22,000 cycles |
| Playback frequency band | 30-22kHz |
| Efficiency | 100db |
| Power Handling | 10–30 watts (optimized for tube ...) |
| Outer diameter | 300 ✕ D145mm |
| Weight | 6.0kg |
| Required component | N-3000A Dividing Network |
Design
The 601A is a coaxial 2-way ("Duplex") design with the high- and low-frequency drivers in one unit. The high-frequency section is described as amazingly compact and efficient. It covers 3000 to 22,000 cycles smoothly.
Context
The 601A belongs to a family of Duplex speakers that includes the 602A and 604C. It is also used in the Altec 700A Melodist Speaker system.
Market
Surviving 601A units are old, and they often need restoration to perform their best. A commonly reported problem is the high-frequency driver cutting in and out, which usually means a wire repair. One unit sold for JPY 134,545 in Japan.
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