Presenting the next-generation near field monitor with a uniquely shaped cabinet resulting from our long research into sound performance. TAD Lab., a company determined to achieve sound performance without any compromise, has created the next-generation near field monitor. The TSM-2201-LR Speaker Systems with unprecedented new Σ (sigma) shape cabinet have enhanced the accuracy of the sound production process. 



Adjusts level and time of reflected sound to achieve monitoring with superior balance
The Σ shape of the side panels lowers the reflected sound level by reflecting diffraction sound waves vertically from the listening point. As a result, standing reflections between the left and right speakers are suppressed, providing more distinct sound imaging.

Reduces internal standing waves
The Σ shape effectively decreases internal standing waves. The side panels are two sets of oblique planes that suppress the occurrence of standing waves, and sound from the LF driver that enters the space on the top effectively absorbs the acoustic energy that exists there. By reducing leakage from inside the cabinet, which lurks there like a shadow on the sound from the speaker unit, the depth and timing of the sound are more clearly heard.

Creates a highly rigid cabinet
The Σ shape allows the TSM-2201-LR to simultaneously achieve high rigidity and high loss.


Sealed cabinet is unaffected by the monitor environment, maintaining proper sound balance.
The sealed cabinet provides, in principle, minimal phase rotation, resulting in bass with less phase displacement than the bass-reflex method. There is no wasteful action because the air load is applied to the unit down to the low range. Therefore, a sealed cabinet is less affected by the monitor environment than a bass-reflex cabinet, meaning it is the optimum type for a near field monitor.

3/8-inch nuts on the bottom surface anchor the speaker stand. Legs for horizontal installation are included.
The bottom panel of the cabinet is equipped with 3/8-inch nuts, which can be used to directly attach the speaker stand or another stand adapter. In addition, legs are provided for horizontal installation. The legs are designed to minimize the area of contact with the installation surface, so they also reduce the transmission of vibration. They can also create an angle when the speaker is positioned vertically.

tad sound

Convex DECO diaphragm improves sound directivity and enhances sound separation.
The drivers employ convex DECO diaphragms. This is a new TAD style suggested by Olson's proposed directivity improvement from the 1950s. The LF Driver improves the left-right directivity of the sound by dividing the sound that expands vertically at high frequencies into left and right components. At the same time, sound separation is improved by distributing the reflections within the cone. The HF driver also uses DECO on the waveguide surface, but only on the bottom section, considering the expansion of the listening space.
DECO : Diffusion Effectual Convexity by Olson

CBC achieves clear sound and good linearity
CBC voice coil is wound inside and outside the bobbin. Strong and with superior radiation properties, it ensures clear sound with little incidental sound produced by flexural vibration of the coil. Compression produced by higher voice coil temperatures (drive power saturation) is also reduced, contributing to excellent linearity.
*BCB : Center Bobbin Coil

DRS achieves wide-range reproduction with low noise distortion, reducing sound loss
The LF Driver suspension is designed to provide dynamic midrange performance. The HF driver has a shape and a structure that optimizes low frequency performance. As a result, the speaker achieves response with leeway vis-à-vis the system crossover frequency, resulting in less strain and mechanical power compression.
*DRS : Dynamic Responce Suspension

Low distortion magnetic circuit reduces high frequency distortion
The magnetic circuit pole piece is a copper cap, providing voice coil inductance compensation. This lowers distortion in the high frequency range, for enhanced reproduction capability.

Emphasis on sound quality extends to invisible details
The LF Driver was designed with scrupulous attention to sound quality in every detail, including the aluminum die cast frame in a unique new shape, the vibration-damped lead wire and even selection of the bonding agent. The seal wound around the magnet is not merely a design feature; it also reduces magnet vibration.

High Frequency Driver Unit

Low Frequency Driver Unit

high quality network

High sound quality design includes not only circuit configuration, but also high quality capacitor and other strictly selected parts
Comprehensive simulations ensure smooth linking of the LF and HF driver outputs, including phase continuity. The circuit configuration even takes into account the effect on sound quality of the electric charge on the surface of the unit. All parts are chosen for the highest quality. The large film capacitor reduces incidental sound caused by extraneous diaphragm vibration. The air core coil reduces distortion and the resistor combines multiple elements for optimum heat and magnetic stability.

Layered substrate has wooden and aluminum panels, improving sound quality
The network substrate is a layered structure consisting of MDF and an aluminum panel. The aluminum panel has the effect of stabilizing the mechanical and electrical grounds, further contributing to sound quality.

Large threaded input terminals solidly hold speaker cables
Large threaded input terminals with 6-mm openings solidly anchor the speaker cable, ensuring optimum connectivity.


Model No.

Model / Configuration

Sealed type / 2-way

Driver Units

LF Driver : 20 cm, 8- inch cone

HF driver : 2.5 cm, 1-inch metal dome

Performance Data

Frequency response : 50 Hz – 40 kHz (-10 dB)

Crossover frequency : 2.3 kHz

Maximum input (JEITA) : 160 W

Output SPL : 86 dB (W/m)

Impedance : 4Ω


Weight : 7.8kg, 17.2 lbs (per speaker)

Dimensions : 260 mm, 10-1/4 in (W) x 348 mm, 13-11/16 in (H) 

x 253 mm, 9-15/16 in (D)

Stand attachment nut : 3/8-inch nut (bottom surface)


Legs (round x 4, bar x 2)