412 HWTT BOXY COMBINATION

The HIWATT™ SE4122 is a British-made 4×12 straight cabinet from HIWATT Custom Amplifiers, London. HIWATT's reputation for military-grade build quality made their cabinets a fixture on major stages — famously used by Pete Townshend (The Who) and David Gilmour (Pink Floyd) alongside HIWATT DR103 heads.

This cabinet is configured in an X-Pattern (also called cross-pattern or diagonal loading) — a speaker loading technique where two different speaker models are mounted in alternating diagonal positions. The result is a cabinet that simultaneously produces the tonal character of both drivers, blended spatially across the four speaker positions.

The two speaker types are the Celestion™ G12M25 Greenback — a 25W British driver with warm, vocal midrange — and the Celestion™ G12H30 Blackback — a 30W heavier-magnet driver with tighter low-end and more prominent upper-mids. Together they produce a richer combined response than either speaker achieves alone.

This IR set captures the cabinet using cross-pattern microphone placement: one microphone on a Greenback speaker, a different microphone on a Blackback speaker, blended at a 50/50 ratio. Single-mic IRs are not included — this is a mix-only capture set designed to preserve the cross-pattern speaker blending at the source.