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 designed for full-range audio reproduction. It combines a high-frequency driver with a low-frequency unit in a single frame, intended for use with the N-3000A Dividing Network. Known as the "Duplex," it was engineered to deliver smooth performance across a wide frequency band, with particular 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 Altec 601A features a coaxial 2-way ("Duplex") configuration, integrating both high- and low-frequency drivers into a single unit. The high-frequency section is described as amazingly compact and efficient, smoothly covering frequencies from 3000 to 22,000 cycles.
Context
The Altec 601A is part of a family of Duplex speakers that includes the 602A and 604C, and it is also used in the Altec 700A Melodist Speaker system.
Market
Due to their age, surviving Altec 601A units often require restoration to perform optimally. A common issue reported is the high-frequency driver cutting in and out, typically requiring wire repair. One unit sold for JPY 134,545 in Japan.
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