Description

TYPE 40 Main

Product overview

Compact in form. Monumental in capability.

The TYPE 40 Main was developed for studios that need more output, low-frequency reach, and listening distance than nearfield monitors can provide, but are not well served by the size and complexity of a traditional large-format main system. It is a compact, full-range reference main monitor with the control, resolution, and headroom required for critical listening.

Its sealed three-way design brings full-range monitoring into a single cabinet. Controlled extension down to 20 Hz allows low-frequency decisions to be made directly, while the D’Appolito MTM arrangement provides precise imaging and controlled dispersion across the listening area. In ZERO PHASE mode, HEDD Lineariser® provides phase-accurate monitoring for critical work, while HEDD CTRL brings system control and manual response tuning to the listening position.

The TYPE 40 Main is complete on its own, with no separate subwoofer required. It can also serve as the foundation of a larger TYPE 40 System as room and production requirements grow.

Key features

Full-range bass from a sealed cabinet

A 10¾-inch high-excursion woofer extends response down to 20 Hz from a fully sealed enclosure. The result is controlled low-frequency behaviour and clear pitch definition, allowing kick drums, bass instruments, and sub-bass content to be judged directly without requiring a separate subwoofer.

HEDD Air Motion Transformer

Hand-built in Berlin, the HEDD Air Motion Transformer uses a thinner diaphragm and optimised fold geometry for lower effective moving mass. It responds quickly to changes in the signal, reproducing transients, spatial cues, and fine detail with precision while extending response to 40 kHz.

Controlled D’Appolito MTM design

Two 4-inch midrange drivers flank the AMT in a symmetrical D’Appolito MTM arrangement. This creates a focused acoustic centre, maintains an even horizontal listening window, and controls vertical dispersion to reduce reflections from the floor and ceiling.

HEDD Lineariser®

In ZERO PHASE mode, HEDD Lineariser® corrects amplitude and phase response and time-aligns the drivers for precise transient reproduction and stereo imaging. FLAT mode corrects frequency response without phase linearisation, while OFF provides the lowest possible latency for tracking and real-time performance.

HEDD CTRL

HEDD CTRL brings transparent control of the TYPE 40 Main to the listening position, giving engineers the tools to manually correct the room. Its 12-band parametric EQ allows precise tuning of the monitor response, while level, input, filters, and Lineariser modes can be adjusted without leaving the sweet spot. Presets can be saved for different workflows, formats, or listening positions, with every adjustment remaining visible and under the engineer’s control. The free software can manage anything from a stereo pair to an immersive system of up to 250 speakers.

Complete now. Expandable later.

The TYPE 40 Main is a complete full-range monitor on its own. When room size, listening distance, or production demands increase, one to three TYPE 40 XTD modules can be added per channel for more output, low-frequency headroom, and directional control without replacing the Main.

Features

Active three-way reference main monitor in a fully sealed cabinet
Free-field frequency response: 20 Hz–40 kHz (-3 dB)
10¾-inch high-excursion woofer for controlled low-frequency extension down to 20 Hz
Two 4-inch midrange drivers and a hand-built HEDD Air Motion Transformer in a D’Appolito MTM arrangement
Maximum SPL: 108 dB at 50 Hz, 1 m; 123 dB (peak)
Dedicated Class D amplification: 700 W LF, 300 W MF, and 300 W HF
HEDD Lineariser® with ZERO PHASE, FLAT, and OFF modes
HEDD CTRL management over Ethernet with 12-band parametric EQ, plus control of level, input, filters, Lineariser modes, standby, presets, and firmware updates
LF RANGE modes: FULLRANGE, MAX SPL, and XTD
High- and low-shelving filters, plus a desk filter for installation near work surfaces
Balanced analog XLR and AES/EBU digital inputs, both with signal-through connections
Internal processing at 96 kHz; accepted digital sample rates from 44.1 to 192 kHz
Automatic standby after 30 minutes of inactivity by default; timing adjustable in HEDD CTRL
Horizontal placement on stands, soffit mounting, or compatible hardware via side M10 mounting points
Detachable amplifier back panel for custom and soffit installations

Expandable with one to three TYPE 40 XTD modules per channel

Specification

Specification	TYPE 40 Main
Main features	Active three-way reference main monitor; closed cabinet; HEDD Lineariser®; HEDD CTRL; LF Range, desk, and shelving filters
Drivers	10¾-inch Ultra-High Performance Subwoofer; 2 × 4-inch midrange drivers; hand-built Air Motion Transformer
Driver arrangement	D’Appolito MTM: two midrange drivers flanking the AMT
Amplification	Class D: 700 W LF / 300 W MF / 300 W HF
Crossover frequencies	250 Hz / 2.8 kHz
Frequency range	20 Hz–40 kHz, free-field (-3 dB)
Maximum SPL	108 dB SPL at 50 Hz, 1 m; 123 dB SPL (peak)
DSP integration	Internal processing at 96 kHz; HEDD Lineariser® with ZERO PHASE, FLAT, and OFF modes
Lineariser delay	2.3 ms OFF / 3.3 ms FLAT / 11.3 ms ZERO PHASE
Filters	LOW / HIGH shelving: ±4 dB in 2 dB steps at 80 Hz / 4 kHz; desk filter: 0 / -1 / -2 / -4 dB at 180 Hz
LF Range	FULLRANGE / MAX SPL / XTD
Inputs	Balanced analog XLR (> 20 kΩ) and digital AES/EBU XLR; accepted sample rates 44.1–192 kHz

Signal through	Analog XLR Through and digital AES/EBU XLR Through
Control / management	HEDD CTRL via Ethernet / RJ45
Recommended listening distance	2 m or above
Mounting	Horizontal placement; side M10 points; compatible bracket sold separately; soffit-mountable; detachable amplifier back panel
Design	MDF cabinet; satin black matte paint
Dimensions (H × W × D)	370 × 470 × 450 mm
Weight	29.5 kg per unit