[Overview]
This is a studio monitor system manufactured by ALTEC around 1945, using Douglas fir plywood cabinets.
It is a rare model commonly known by the nickname “Silver Box.”
The cabinet features a metal mesh protective grille, flocking, and Douglas fir plywood construction.
The 612 is one of ALTEC’s 61X-series models, affectionately known as the “Silver Box,” and is considered one of ALTEC’s representative models alongside the 612A, 618A, 620A, and A7.
The 612 was designed for professional use and was primarily installed in recording studios and theaters.
Despite its age, both the exterior and interior are in exceptionally good condition.
We have included a large number of photographs so that you can carefully evaluate the cosmetic condition. Please review the photos before considering your purchase.
The system allows you to enjoy the powerful sound of a 15-inch driver.
It delivers high-quality reproduction with impressive bass and was used in venues such as theaters and restaurants.
The frequency response is smooth across the entire range.
■ Sound Quality ■
This is the kind of punchy, dynamic sound that truly defines ALTEC.
It delivers high-quality reproduction with powerful bass and was used in venues such as theaters and restaurants.
The frequency response is smooth across the entire range.
[Specifications]
■ 615B Duplex ■
Diameter: 15 inches
Type: 2-way coaxial driver
Magnet: Alnico V
Impedance: 16Ω
Frequency Response: 20Hz–22,000Hz
Lowest Resonant Frequency: 40Hz
Power Handling: 35W continuous / 50W peak
Crossover Frequency: 1.6kHz
Magnetic Flux Density: 13,000 / 15,500 gauss
Dimensions: 38cm outer diameter
■ N1550A ■
Crossover Frequency: 1.6kHz
Attenuation Characteristics: LF -6dB/oct, HF -12dB/oct
The cone paper and diaphragms are all in exceptionally clean condition.
This is an extremely rare piece that is seldom seen on the market.
Please refer to the photographs to evaluate the cosmetic condition.
[Cabinet Specifications]
Dimensions (each): W650 × H750 × D450mm
Weight (each): Approx. 30kg
Total Volumetric Shipping Weight (after packing): Approx. 90kg
The cabinets have thoroughly aged and dried over the years, resulting in an exceptionally open and responsive acoustic character.
As can be seen in the photographs, the cabinets remain in very clean condition despite their age.
We have included numerous exterior photographs so that you can carefully review their cosmetic condition.
