Amphion FlexBase25

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SKU: AMPH_FLEXBASE25 Categories: , Tag:

Passive LF Extension Tower and FlexAmp 1200 Amplifier Module



Nailing the lowest octave-settings and translating it precisely from a studio to any listening situation is the foremost challenge for any contemporary music production. The fragmented playback environment demands extreme precision in the process of music creation and sound editing, especially when it comes to modern, bass-heavy production.

A single mono subwoofer is part of a movie format, but Amphion does not believe it is good enough to be used in music production. In music, it is necessary to keep the stereo information throughout the whole frequency band. Amphion’s FlexBase25 presents you with an unconventional approach to subwoofer design that will satisfy even the most demanding producers or sound engineers.

The FlexBase is a stereo bass extension and management system with a separate LFE-channel input. The crossover frequency is variable between 35-260 Hz, which allows changing the flavour of the system to match the task at hand. The ability to adjust the mono/stereo spread ensures that the system integrates even when higher crossover points are used. The LFE input has +10dB sensitivity compared to the main channels, but no built-in lowpass filtering. Unlike the conventional subwoofers, the system is designed to be easy to set-up and intuitive to use.

Pair it with One12, One15, Two15 or One18 for a smaller room full range system or place it with behind the console while keeping your One18, Two15 or Two18 on the meter bridge.

FlexBase25 Technical Specifications:

 Operating Principle   One way closed box, stereo
 Drivers  2 x 25cm
 Crossover  Active 4th-order @ 35-260 Hz
 Max SPL  117dB
 Frequency Response  20 Hz – 260 Hz +/-3dB (low pass)
 35 Hz – 200 kHz +/-3dB (high pass)
 Connection  3.5m long, terminated with 4-pole Neutrik
 Speakon connectors
 Measurements (H x W x D)    840 x 342 x 321 mm
 Weight  45 kg

FlexAmp1200 Technical Specifications:

 Output Power   700 W (4 Ω) per channel
 THD+ noise                                                         @ 10W: 0,0025% (100 Hz)
   @ 100W: 0,0015% (100 Hz)
 Dynamic Range.                           127 dB (A) weighted
 Efficiency  230 V / 50 Hz – 700 W
 Standby Mode  ErP (1275/2008/EC), Energy Star® v3.0 compliant
 Mains  Universal mains including Power Factor Correction (100 – 240V)
 Casing   19” rack mountable (2U) high quality aluminium
 Weight  6 kg

Assembled in Finland