Blackstar St James 412B Lightweight 4×12 Speaker Cabinet

Retailing in the region of £739.00

If you are looking for New gear from Blackstar Amps. The Blackstar St James 412B Lightweight 4×12 Speaker Cabinet is a great option. In stock, and ready to ship with fast, reliable delivery across the UK, Ireland, and Europe. For more details within Amps, additional Amp Cabinets options, full specifications, demos, images, videos, and secure online ordering, read on below.

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Description

If you are looking for New gear from Blackstar Amps. The Blackstar St James 412B Lightweight 4×12 Speaker Cabinet is a great option. In stock, and ready to ship with fast, reliable delivery across the UK, Ireland, and Europe. For more details within Amps, additional Amp Cabinets options, full specifications, demos, images, videos, and secure online ordering, read on below.

Designed to pair beatifully with the Blackstar St.James 100W Amplifier Head, this lightweight but elegant 4×12 speaker cabinet delivers the impactful & resonant Blackstar tone that is instantly recognisable. The weight loss comes courtesy of the Celestion Zephyr speakers, which have a shallow magnet that might look like it should be neodymium. Actually, it’s a ceramic design that gets close to the fabled ‘Greenback’ tone but in a much lighter package.

Logo Power

This is a standard centre-ground 9V DC output for connecting power to a St. James
cabinet, for the LED logo.

Key Features

  • 4×12″, 280 watt
  • Custom lightweight speakers: Celestion G12Z-70 ‘Zephyr’ voiced for 412
  • Mono, 4 Ohm or 16 Ohm operation, Stereo 2x 8ohm operation
  • 9V DC input to light up the logo with connection from St. James 100 amp

Additional information

Weight 15 kg

About the manufacturer

Blackstar

Blackstar are known for making standout effects pedals and more. Founded with a passion for tone and innovation, their gear has shaped countless records and players’ sounds. Look out for their iconic designs and flagship models — they’ve earned a reputation for reliability and creativity.

More info about this Product

Amp Cabinets

A speaker cabinet is responsible for turning your amplifier’s power into the sound you actually hear, and it plays a huge role in the overall feel and character of your tone. Different cabinet sizes, speaker types, and configurations can affect everything from low-end punch to clarity and projection. Cabinets can be open-back or closed-back, single or multi-speaker, each offering a distinct response and spread in a room. Whether paired with a powerful amp head or a compact setup, the right speaker cabinet helps define how your guitar sits in a mix and how it feels to play.

Amps

Guitar amps cover everything needed to amplify, shape, and project your guitar sound, from small practice setups to full stage and studio rigs. In this category you’ll find combo amps, separate amp heads and speaker cabinets, covering valve, solid-state, and hybrid designs, each offering a different feel and response. You’ll also see modelling and digital amps, built-in effects, footswitches, attenuation solutions, replacement speakers, valves, and essential accessories to keep an amp performing at its best. Whether you’re chasing pristine cleans, classic crunch, or modern high-gain tones, guitar amps and related gear are all about finding the right balance of power, tone, and control for the way you play.

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4×12

4×12 refers to a speaker cabinet configuration using four 12-inch speakers, traditionally associated with large guitar rigs and high-volume performance. This setup delivers a powerful, full-bodied sound with strong low-end punch, projection, and natural compression.

4×12 cabinets are most commonly used with high-powered amp heads in rock and metal settings, where volume, sustain, and impact are important. They produce a wide, immersive sound that fills a room, but are larger and heavier than smaller cabinet options, making them best suited to stage use rather than compact setups.

Cabinet

A cabinet is a speaker enclosure designed to be used with a guitar amplifier head, playing a crucial role in how your tone sounds and feels. The size of the cabinet, the number of speakers, and the type of speakers used all affect projection, low-end response, and overall character, shaping everything from tight, focused tones to wide, room-filling sound.

Lightweight

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