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MartinLogan Descent i [20/28] Balancedforce for cleaner bass

Resulting from an equal and opposite reaction to the cone's

movement, strong bass causes all traditional subwoofer

enclosures to generate acoustic vibrations. You feel this by

touching the cabinet. Although the "physics" of this phe-

nomenon actually cause a subwoofer cabinet to resonate

or even dance, most subwoofer designers apply weight or

mass to the cabinet to minimize such disturbances, but still

leave one by product—"smeared bass". Vibrations translated

from the woofer to the cabinet actually dampen the bass

signal causing a loose and "fuzzy" sound.

The Descent i integrates BalancedForce bass configura-

tion to nullify cabinet vibrations. Originally engineered for

the cost-no-object, state-of-the-art Statement™ E2 system,

BalancedForce uses two or more drivers mounted at oppos-

ing angles. The Descent i's 3 drivers, spaced 120 degrees

apart, operate in exact opposition, resulting in maximum

cancellation delivering the ideal—pure bass energy with a

reduction in cabinet contributions to the room as high as

25dB over traditional subwoofer resonance solutions!

TriLinear™ Configuration

The use of three small, identical drivers maintains the low

distortion levels and optimal control of an efficient and

rigid small driver while moving the same amount of air as

a driver three times larger. This allows powerful bass in a

small package, free from the performance limitations of a

heavy and hard to control single large driver.

Servo-Controlled Dynamic Drivers

All dynamic drivers generate distortion caused by spider

and surround nonlinearities as well as voice coil inductive

disturbances and variant motor strength during massive

woofer excursions. These challenges plague all subwoofer

designers. The result? Induced harmonic and intermodulated

distortions causing dramatic disturbances at high excursions.

This occurs significantly in almost all non-servo-controlled

subwoofers.

MartinLogan’s advanced servo system uses a sophisticated

monitoring and control circuit to detect and instantaneous-

ly correct any deviation between acoustical output and

electrical input. The result? A reduction in distortion for

the purest possible low-frequency reproduction.

Proprietary Switching Amplifier

The Descent i incorporates three identical proprietary

switching amplifiers.The use of three amplifiers allows

for an incredible amount of woofer control resulting in

tighter, better defined bass while keeping distortion at the

lowest possible levels.

25Hz & 50Hz Level Control

The Descent i 25Hz & 50Hz Level controls allows custom

sound tailoring capabilities found in few subwoofers. A

room, especially when small, can greatly exaggerate bass

in the 20–60Hz range. The Descent i’s 25Hz & 50Hz

Level control knobs increase or decrease lower bass to

compensate for these room anomalies and allow increased

deep bass if you desire a subsonic sense of energy at the

lowest frequencies.

20 MartinLogan Exclusives

MARTINLOGAN EXCLUSIVES

BalancedForce™ For Cleaner Bass

MartinLogan Descent i [20/28] Balancedforce for cleaner bass

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