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REDISCOVER YOUR ACOUSTIC SPEAKERS

The faithful transmission of low frequencies is an essential condition for the realistic perception of the sonic message as a whole, and constitutes a unique experience.

apropos

Our company Purelow Acoustic, based in the French department of Aveyron, has taken over the manufacture of the "INFRAPLANAR" subwoofer, a bass and extreme bass speaker, whose operating system is unique and performance exceptional.

This loudspeaker originally imagined and designed by the late Mr. Claude Lacroix, avoids pitfalls associated with reproducing low frequencies.

This subwoofer is the only one capable of accompanying all types of loudspeakers in bass and extreme bass sounds, including the most efficient such as the QUAD electrostatic, thereby improving the quality and consistency of the entire sound spectrum.

Each speaker is a completely handcrafted unique model, available in different colours and finishes.

Two models are currently available: The initial model or “LO” (Large One) and the “GR” (Golden Ratio) model, of smaller dimensions.

In addition to the acoustic qualities of this transducer, it is also distinguished by its small footprint which is similar to that of a flat screen television, the depth of the speaker being only 12 cm and that of its base of 33 cm.

Due to its geometry and its operating principle, it will be easy to place in your living room, in a corner, between your speakers or against a wall.

The settings and adaptations with your speaker system will be greatly facilitated.

The electrical characteristics of the PURE LOW GR and its good efficiency will facilitate the work of your amplifier.

The respective weights of 105 kg for the GR model, and 130 kg for the LO model will allow relatively easy handling.

SPECS

Impedance curve:

Stable impedance at 4 Ohms.
The resonant frequency Fs is as low as 8,74Hz.
At Fs the impedance is only 8 Ohms.
Almost zero phase rotation on the audio range.

PureLow caracteristics and curves

specifications

Type: Planar subwoofer (no cabinet).
Bandwidth: Flat from 10Hz to 400 Hz.
Sensitivity: 90dB / 1 w at 10 Hz measured at 1 meter.
Power capability: 400 Watts, without thermal compression.
Impedance: Flat 4 Ohm load on the whole bandwidth.
Radiating Area: 1 square meter.
Very light membrane (3,5 grammes/dm square).
Driver excursion: +/- 9,5 mm with driving coil staying in magnetic field.
Large volume of displaced air +/- 7 litre.
Dimensions (WxHxD) : 126 x 126 x 12 cm.
Weight: 130 kG.

Response curve :

Measured in room and Hand made curve.
Sonometer Bruel & Kjaer model 2230 with microphone at 1 meter of the loudspeaker.
Frequency range: 5Hz to 400 Hz
Power: 1W RMS (2 volts RMS at loudspeaker inputs).
Measured level: 91dB +/- 2dB from 9,5 to 46Hz.

Type: Planar subwoofer (no cabinet).
Bandwidth: Flat from 10Hz to 400 Hz.
Sensitivity: 90 dB / 1 Watt at 12 Hz measured at 1 meter.
Power capability: 400 Watts, without thermal compression.
Impedance: Flat 3 Ohm load on the whole bandwidth.
Radiating Area: 0,74 square meter.
Very light membrane (3,5 grammes/dm square).
Driver excursion: +/- 9,5 mm with driving coil staying in magnetic field.
Large volume of displaced air +/- 5 litre.
Dimensions (WxHxD) : 126 x 99 x 12 cm.
Weight: 105 kG.

PureLow caracteristics and curves

Impedance curve:

Stable impedance at 2.5 Ohms.
The resonant frequency Fs is as low as 12,79Hz.
At Fs the impedance is only 9 Ohms.
Almost zero phase rotation on the audio range.

Response curve :

Measured in room and Hand made curve.
Sonometer Bruel & Kjaer model 2230 with microphone at 1 meter of the loudspeaker.
Frequency range: 10Hz to 400 Hz
Power: 1W RMS (1,61 volts RMS at loudspeaker inputs).
Measured level: 90 dB +/- 2,5 dB from 10 to 75 Hz.