ATC Tower Series Loudspeakers

Large Tower implementations of ATC reference monitors

ATC Tower Series Range Introduction

The ATC Tower Series loudspeakers are ATC’s Large Tower (LT) implementations of selected reference monitor platforms.
As presented on the official ATC website, this range does not introduce new speaker families, but instead applies a floorstanding cabinet architecture to existing ATC designs — increasing bass authority and room-filling scale while preserving the original voicing.

In ATC’s own structure, the Tower Series is therefore defined by:

• the LT cabinet format

• and the ASLT / PSLT model designations

At Authentic High End, we position the Tower Series for listeners who want maximum scale and authority, without deviating from ATC’s reference sound.

What Defines the ATC Tower Series

Large Tower (LT) Architecture

Tower Series models use tall, floorstanding enclosures designed to:

• extend low-frequency response

• increase maximum output capability

• reduce dynamic strain in larger rooms

Crucially, this is achieved without altering the driver complement or tonal balance of the original designs.

Active and Passive Versions

Tower Series models are clearly identified by ATC as:

• ASLT → Active Speaker, Large Tower

• PSLT → Passive Speaker, Large Tower

This allows for:

• fully optimised active ATC systems, or

• passive systems using external amplification

In-House ATC Engineering

As with all ATC loudspeakers:

• drive units are designed and manufactured by ATC

• cabinets prioritise rigidity and low coloration

• assembly takes place in the UK

Official Models in the ATC Tower Series

According to the ATC Tower Series listing, the range consists of only the following models:

ATC SCM20 Tower

• SCM20ASLT – Active Large Tower

• SCM20PSLT – Passive Large Tower

Floorstanding version of the SCM20 platform, offering greater bass authority while retaining compact-monitor accuracy.

ATC SCM50 Tower

• SCM50ASLT – Active Large Tower

• SCM50PSLT – Passive Large Tower

Three-way reference loudspeaker with increased scale and output capability.

ATC SCM100 Tower

• SCM100ASLT – Active Large Tower

• SCM100PSLT – Passive Large Tower

High-output reference loudspeaker suited to large listening rooms.

ATC SCM150 Tower

• SCM150ASLT – Active Large Tower

• SCM150PSLT – Passive Large Tower

ATC’s flagship domestic loudspeaker in Large Tower form, designed for no-compromise systems.

Listening Character

Across the Tower Series, listeners can expect:

• deeper bass extension than stand-mount equivalents

• effortless dynamics at realistic listening levels

• stable imaging in medium to large rooms

• the same neutrality and control ATC is known for

The increase in scale does not come with a change in voicing.

Position Within the ATC Range

The Tower Series:

• complements the Entry Series and Classic Series

• represents the maximum-scale domestic implementations of ATC designs

• is often the final step for listeners committed to the ATC philosophy

Why We Recommend the ATC Tower Series

We recommend the Tower Series because it delivers:

• full-range authority

• ATC’s reference accuracy

• flexibility between active and passive systems

It is ATC at its most complete — without changing what defines the brand.