BS-15 / BS-15.sp

The BS-15 is a high-power bass loudspeaker for use with external power-amplifiers, frequency crossovers and controllers. The functionality of the BS-15 is based on the backloaded dual port technology. This is also a design by Helmut Barth and is already established and proven in the PA field. More precise bass reproduction through controlled transient response and an extremely deep cabinet tuning are the benefits of this technology when compared to simple bass-reflex constructions. The powerful 15“ loudspeaker with its high efficiency factor and very linear cone excursion generates the high quality and performance of the BS-15.
Impulse peaks of up to 4000 W are no problem for the BS-15. The BS-15 is optionally available in RAL colours.

The BS-15.sp is a self-powered bass loudspeaker with integrated 1500 watts digital power amplifier.


Bass extension for:
concert halls, theaters, clubs, cinemas,
auditoriums, multipurpose halls, churches.

Options and Accessories

Special coating in RAL colours.
Visible round-hole grille coated in special enclosure colour with acoustic foam behind.


15“ high-performance Neodymium long-excursion driver.
Speakon connectors.
2 x XLR/jack combicon inputs with Link-Outputs (BS-15.sp).
M20 thread insert.
Integrated carrying handles.
Exchangeable back plate for upgrades with digital power amplifier or passive crossover (BS-15 only).
Standard colour is structured black coating.

Technical Data

Data BS-15 / BS-15.sp