Royer Labs SM21 AxeMount

Royer Labs SM-21 AxeMount is a dual microphone mount designed specifically to simultaneously hold a Royer R-series ribbon microphone (R-121, R-122, R-122 MKII, R-122V) and a 57-style dynamic microphone on a single stand — without the need for two stands, two separate clips, and manual phase-checking between the microphones. The combination of a Royer ribbon and a 57-style dynamic is one of the most established electric guitar amplifier recording techniques in studio practice: the ribbon delivers full low end, natural midrange, and smooth top; the dynamic contributes attack and mid-range punch; blending both signals in varying proportions allows precise tonal shaping. The AxeMount eliminates the phase alignment problem inherent in independently positioned microphones.

Phase alignment without measurement or trial and error

When positioning two microphones on separate stands, any repositioning of either mic changes the inter-capsule delay — which at mono summation produces a shifting comb-filtering effect. The SM-21 solves this mechanically: both microphones are held in a fixed, pre-determined spatial geometry, and the mount includes positioning marks that guide placement of the SM57 capsule at the point where the speaker dome meets the cone paper (the classic starting position for the dynamic), while the R-121 sits on the dome — the position Royer recommends as the starting point for this combination. The clip accommodates cylindrical microphones of approximately 25 mm diameter in the side-address position (for the ribbon) and approximately 32 mm in the front-address position (for the dynamic). Moving both microphones from one speaker to another or to a different cabinet is as straightforward as moving a single mic stand. The AxeMount mounts on a standard microphone stand thread.

KEY FEATURES

• Dual microphone mount on a single stand — Royer ribbon + 57-style dynamic
• Fixed spatial geometry between capsules — phase alignment without measurement
• Positioning marks for SM57 start point (dome-to-cone junction) and R-121 (dome)
• Compatible with: Royer R-121, R-122, R-122 MKII, R-122V and SM57-style dynamic microphones
• Side-address chamber diameter: approximately 25 mm (Royer ribbon)
• Front-address chamber diameter: approximately 32 mm (SM57-style dynamic)
• Moving both mics to a different cabinet — equivalent to repositioning a single stand
• Eliminates the need for two stands and two clips in the classic ribbon + dynamic guitar recording setup
• Solid construction; Royer lifetime warranty

TECHNICAL SPECIFICATIONS

• Type: dual microphone mount
• Intended combination: Royer R-121 (R-122, R-122 MKII, R-122V) + 57-style dynamic microphone
• Side-address chamber diameter: approximately 25 mm (ribbon microphone)
• Front-address chamber diameter: approximately 32 mm (dynamic microphone)
• Mounting: standard microphone stand thread
• Weight: approximately 170 g (6 oz)
• Warranty: lifetime