Complete at its core. Built to scale.

The TYPE 40 System is a modular reference monitoring platform built around the complete, full-range TYPE 40 Main. It is designed for studios that need more low-frequency headroom, playback level, or control over bass radiation than the Main alone provides, without changing the monitor at the centre of the system.

Dedicated TYPE 40 XTD modules extend the Main as part of one integrated system. Frontfire configurations add output and headroom, while Cardioid configurations reduce low-frequency energy behind the system. Each XTD can operate in Ported or Closed mode, allowing the system to prioritise maximum output or more controlled sealed-cabinet behaviour according to the room and the work.

With one to three XTD modules per channel, the same reference can serve larger control rooms, immersive environments, midfield monitoring, and theatrical installations. Studios can install the capacity they need now and expand later as room size, listening distance, or production demands grow. HEDD CTRL keeps configuration and day-to-day operation unified at every scale.

Key features

Scalable from Main to System

Every configuration retains the TYPE 40 Main as the complete, full-range reference at its core. Adding XTD modules increases low-frequency capability, output, and directional control without replacing the Main or changing the fundamental monitoring character. The modules expand vertically beneath the Main, preserving a modest footprint as the system grows.

More output with each XTD

Each TYPE 40 XTD combines a 10¾-inch high-excursion woofer with a dedicated 700 W Class D amplifier. With one, two, or three Frontfire Ported XTD modules per channel, maximum SPL at 50 Hz increases by 6 dB, 12 dB, or 15 dB respectively compared with the Main alone. Output can therefore be matched to the room, listening distance, and production workload.

Cardioid bass control

Selectable Cardioid configurations reduce low-frequency energy behind the system, helping to limit reflections from the wall behind the monitors that can build up and blur the low end. This is especially useful where room geometry, speaker placement, or acoustic treatment cannot fully control low-frequency behaviour. Rearward radiation can be reduced by up to approximately 10 dB. A single Cardioid Closed XTD provides directional control from approximately 20 to 200 Hz, while larger mixed configurations combine Frontfire output with Cardioid control.

Ported or Closed

Every XTD can operate as either a Ported or Closed system. Ported mode increases efficiency and maximum low-frequency output for greater headroom and impact. Closed mode prioritises control, definition, and resolution, while providing Cardioid operation over the widest frequency range. The supplied aluminium sealing panel converts the enclosure between the two acoustic principles.

HEDD Lineariser®

The Main and every XTD operate as one time-aligned monitoring system. In ZERO PHASE mode, HEDD Lineariser® corrects amplitude and phase response and aligns the system in time for a coherent impulse response. FLAT retains frequency-response correction without phase linearisation, while OFF provides the lowest possible latency for tracking and real-time performance.

HEDD CTRL

HEDD CTRL presents every Main and XTD in one interface. After the units are installed and their matching operating modes selected, the software applies the correct LF Range and Extension Qty settings automatically. It also gives engineers the tools to manually correct the room, including 12-band parametric EQ at group and individual-speaker level, with presets for different workflows, formats, clients, or listening positions. Systems of up to 250 speakers can be managed from the same interface.

Features

• Modular active reference monitoring system built around one TYPE 40 Main with one to three TYPE 40 XTD modules per channel
• Complete, full-range TYPE 40 Main remains the reference monitor in every configuration
• Each TYPE 40 XTD uses a 10¾-inch high-excursion woofer powered by a dedicated 700 W Class D amplifier
• Four XTD operating modes: Frontfire Ported, Frontfire Closed, Cardioid Ported, and Cardioid Closed
• Selectable Ported or Closed operation using the supplied aluminium sealing panel
• XTD frequency response: 20 Hz–80 Hz (-3 dB), extending to 20 Hz–250 Hz in Cardioid operation with the TYPE 40 Main
• Maximum SPL gain at 50 Hz in Frontfire Ported operation: +6 dB with one XTD, +12 dB with two, and +15 dB with three per channel, relative to the Main alone
• Cardioid rear-radiation reduction of up to approximately 10 dB, with the effective frequency range determined by the selected configuration
• HEDD Lineariser® with ZERO PHASE, FLAT, and OFF modes applied consistently across Main and XTD modules
• HEDD CTRL management over Ethernet with automatic LF Range and Extension Qty configuration
• 12-band parametric EQ at group and individual-speaker level, plus level, input, filters, Lineariser modes, standby, presets, and firmware management in HEDD CTRL
• Balanced analog XLR and AES/EBU digital inputs with signal-through connections on every unit
• Accepted digital sample rates from 44.1 kHz to 192 kHz; internal processing at 96 kHz
• Frontfire units align at the front baffle; Cardioid XTD modules are reversed so the back panel aligns with the Main’s front baffle
• Recommended Sound Anchors HEDD TYPE 40 System Stand available separately; other supports may be used when the required physical alignment is maintained
• TYPE 40 Main and XTD use matching cabinet dimensions for space-efficient vertical expansion

Free 3-Year Warranty

In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free Sound Pure 3-Year Warranty, which includes parts and labor. It's our way of adding real value to the personal touch our small, dedicated team brings to every purchase.

Coverage exclusions live in Terms & Conditions, Section 27. Read the warranty →