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Tantrum Audio
Tantrum Audio Really Mean Sub Subwoofer in Red
Small compact studio subwoofer.
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Want to Click and Collect or try items at our Guildford Store?
The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose Click and Collect as your delivery option online or, during store opening hours, call our sales team on 01483 456777 for assistance with placing your order.
If you have placed your order online, you will receive a confirmation email of your order and a separate follow-up text or email to confirm when your item is ready for collection.
Please do not come to the store before you have received the follow-up message, as your order may not yet be ready at the store.
If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that stock availability can change quickly both online and in-store, so we would always recommend placing your Click and Collect order as soon as possible to reserve your item.
SKU: RMSUB
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Product Description
The Tantrum Audio Really Mean Sub in Red is an ultra-compact active studio subwoofer that delivers truly full-range monitoring in even the tightest spaces. Packing serious low-end extension and forensic accuracy into a 28cm cube, it is purpose-built for producers, mix engineers and post professionals who need honest, extended bass without overpowering their room.
With a dual driver, force-cancelling design, powerful ICEpower amplification and deep DSP integration, the Really Mean Sub locks seamlessly into your existing monitors, revealing sub-bass detail and timing you simply cannot hear on nearfields alone. From EDM drops and cinematic LFE to tight, punchy kick drums, it gives you the confidence to make bold low-frequency decisions that translate everywhere.
Ultra-Compact, Studio-Friendly Design
Measuring just 28cm x 28cm x 28cm, the Really Mean Sub is small enough to disappear under a desk or between stands, yet delivers the kind of low-end reach usually reserved for far larger boxes. This makes it ideal for modern project studios, smaller control rooms and tight post suites where every centimetre counts but monitoring quality still has to meet professional standards.
Force-Cancelling Dual Driver System
The mechanically coupled, opposing driver configuration dramatically reduces cabinet vibration by cancelling reactive forces inside the enclosure. The result is cleaner, tighter bass with significantly reduced intermodulation distortion, so you hear only the programme material and not the box. Even at high SPLs, low frequencies stay controlled, articulate and free from unwanted colouration.
Powerful Amplification with USB-C DSP Control
A 400W ICEpower Class AB amplifier provides ample headroom and precise control over the dual drivers, while the integrated DSP (accessible via USB-C) lets you tune the subwoofer to your specific room. By addressing problematic resonances and tailoring the response to your listening position, the Really Mean Sub helps you achieve more consistent, reliable mixes that travel well between different playback systems.
Quick Alignment and Impulse Control
Tantrum Audio’s Quick Alignment Tool automatically measures timing and aligns the sub with your main monitors, with adjustable delay up to ±3m to solve common phase issues. Combined with proprietary Impulse Control technology, which uses feedforward correction to manage driver movement in real time, you get an exceptionally fast, accurate transient response. This is crucial when judging kick and bass relationships, low-end punch and overall mix tightness.
Features
- Ultra-Compact 28cm Cube - At just 28cm x 28cm x 28cm, the Really Mean Sub fits comfortably into cramped studios and desktop setups while still delivering serious low-frequency extension, making it perfect for modern production spaces where room is limited.
- Force-Cancelling Dual Driver Design - Opposing drivers mechanically coupled inside a sealed 24mm MDF cabinet cancel structural vibrations and reduce intermodulation distortion, giving you tight, uncoloured bass that stays accurate even at higher listening levels.
- 400W ICEpower Amplification with USB-C DSP - The built-in 400W ICEpower Class AB amplifier supplies clean, controlled power, while the integrated USB-C DSP lets you apply precise room correction so your low end remains consistent and trustworthy in your specific environment.
- Quick Alignment Tool and Impulse Control - Automatic timing alignment and adjustable delay ensure the sub integrates seamlessly with any studio monitor setup, while Impulse Control technology sharpens transient response, helping you make confident decisions when mixing and mastering low frequencies.
Specifications
General
- Product: Tantrum Audio Really Mean Sub
- Type: Active studio subwoofer
- Colour: Red
Performance
- Power: 400W ICEpower Class AB amplification
- Frequency Response: 28Hz to 200Hz (±1dB)
- Low-Frequency Extension: 15Hz (-10dB)
- Input Level: +8dBU
Cabinet
- Enclosure Type: Sealed
- Construction: 24mm MDF with high-strength baffle
- Dimensions: 28cm x 28cm x 28cm
Connectivity & Control
- Inputs: Balanced XLR stereo
- Inputs: Balanced TRS stereo
- DSP Control: Integrated DSP via USB-C
- Power Supply: 90-260V AC, 50/60Hz
Technologies
- Force-cancelling dual driver system
- Quick Alignment Tool with adjustable delay up to ±3m
- Impulse Control feedforward correction
