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Boundary control

8-steps

One25A's boundary control system allows fine tuning the bass response in eight

steps i.e. +/- 1dB, 2dB, 4dB, and 7dB (measured at 20Hz).

Placing speakers close to boundaries such as walls tends to cause bass build-

up, which can be compensated easily with a turn of a dial, which is located next

to the XLR input. Please note that boundary control allows both decreasing and

increasing the bass level to fine tune the response to different rooms, wall density,

placement and personal preference. Note that the floor is also considered a

boundary, which means that the mounting height of the speaker will affect the

response at the lowest frequencies.

The adjustment is a smooth shelf-type curve mostly operating at frequencies below

150 Hz. Even if results sound sonically fine, use caution when applying correction

as large amounts of boost will use more amplifier power and result in longer driver

excursion. Note that the speaker is designed to work in most rooms of various size

without any need for adjustment.

Boundary control

dBu

-5

-10

-15

100

200

500

10k

CLIO

20k