Line 6

Line 6 V 412 MKII Spider Guitar Cabinet

4.6 (743 reviews)

Four custom Celestion 12s in a closed-back cabinet purpose-built for the Spider V 240HC — this is the full-stack solution that unlocks the amp head's true low-end and midrange authority.

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Overview

The Line 6 Spider V 412 MkII is a purpose-built speaker cabinet housing four custom 12-inch Celestion drivers in a closed-back enclosure, designed as the matching cabinet for the Spider V 240HC MkII amp head. The custom Celestion speaker design is a key specification: Line 6 worked with Celestion to voice these drivers specifically for the Spider V's digital signal output, which covers a wider frequency range and dynamic envelope than a traditional analog guitar signal. That voicing distinction matters — a standard guitar cabinet is engineered for the frequency range and headroom of a conventional guitar amp, while the Spider V's modeled output benefits from drivers that can accurately reproduce the full character of its amp simulations without colouring them unpredictably.

Closed-back cabinet design is the right architectural choice for the Spider V system's primary use cases: rock, metal, and high-gain styles that benefit from focused low-end, midrange punch, and controlled projection. Compared to an open-back cabinet's more diffuse, room-filling character, the closed-back 4x12 plants the sound in front of the cab and projects forward — appropriate for stage reinforcement and high-SPL rehearsal. Mono and stereo inputs give the cabinet flexibility beyond the Spider V pairing, accommodating stereo effects loops, wet/dry configurations, or any amp head producing a stereo output. For full-stack players who want the visual and acoustic authority of a proper 4x12 beneath a Spider V 240HC head, this cabinet is the complete, matched solution.

Specifications

Brand
Line 6
Model
Spider V 412 MkII
Speakers
4x 12-inch Custom Celestion
Cabinet Design
Closed-Back
Inputs
Mono / Stereo
Paired Amp
Spider V 240HC MkII

Pros & Cons

👍 Pros

  • Four custom 12-inch Celestion speakers deliver the midrange density and low-end authority that a full 4x12 cabinet provides — a significant step above combo speaker output
  • Closed-back design produces a tight, focused low-end response that pairs well with high-gain and rock voicings
  • Mono and stereo input options allow both standard head-and-cab operation and stereo rig configurations
  • Custom Celestion voicing is tuned to complement the Spider V 240HC's digital processing output, which matters for the modeled tones this amp produces
  • Full-size 4x12 cabinet presence and projection is appropriate for stage volume and large rehearsal spaces

👎 Cons

  • Cabinet voicing is optimized for the Spider V 240HC — users pairing it with other amp heads may find the custom Celestion tuning less flattering than with standard-voiced Celestion models
  • Full 4x12 cabinet size and weight is a significant transport consideration for gigging musicians without a dedicated road crew
  • At stage volume, a closed-back 4x12 in smaller rehearsal spaces can overwhelm the room — no acoustic port adjustment is possible
  • Custom Celestion drivers are not easily swapped to standard models if the voicing doesn't suit the application
  • No built-in casters listed — transport of a loaded 4x12 cabinet across venues requires effort

Frequently Asked Questions

It's designed as the companion cabinet for the Spider V 240HC MkII, but any amp head with a compatible impedance and speaker output can drive it. The mono/stereo inputs make it versatile for other heads, though the voicing is calibrated to complement the Spider V system.
Impedance specifications should be confirmed on the product spec sheet, but Celestion-loaded 4x12 cabinets in this class are typically available in 8 or 16 ohm configurations. Match your amp head's minimum impedance spec before connecting.
Closed-back cabinets reinforce low-end and midrange frequencies and create a tighter, more focused sound with less ambient room bleed — opposite of an open-back cabinet's airier, more diffuse character. For rock, metal, and high-gain styles the Spider V 240HC is built for, closed-back is the appropriate choice.
Yes — stereo inputs are included, allowing you to feed separate left and right signals from a stereo-capable head or effects processor for a wider sonic spread. Mono operation is also fully supported for standard single-signal use.
Custom Celestion drivers are voiced specifically for the cabinet and amp pairing — Line 6 worked with Celestion to tune the speaker response to complement the Spider V's digital processing. The character differs from stock Vintage 30s or G12T-75s, optimized for the Spider V's full-range modeled output.