Neumann SM69

Name: Neumann SM69
Brand: Neumann

A stereo condenser that engineers reach for when the room itself needs to sing - and one they've been known to tell friends to sell a kidney for.

Overview

The SM69 is a stereo condenser microphone with a pair of capsules in a single housing. What sets it apart in the studio is less any single spec than what that arrangement lets an engineer do. The polar patterns can be adjusted on the microphone itself, and per a 1972 discussion of stereo technique in Studio Sound, that adjustability is the whole point. A writer described a session with a Neumann FET SM69 suspended in front of and above a choir. With the pattern set to crossed figure-of-eight, too much reverberation crept in from the rear. Switching to cardioid tightened the sound but narrowed the stereo image. Widening the difference channel brought back the width while pulling back just enough room. The result was an equivalent pickup roughly like a 120-degree hypercardioid, with slightly better high-frequency response in the center of the image than physically widening the capsule angle would have given.

It's a problem-solver for coincident and near-coincident stereo. Engineers who understand it treat the pattern control as a mixing tool rather than a set-and-forget switch.

The microphone turns up across decades of session documentation, in roles that reward that flexibility. In one account of a drum-tracking date, an SM69 was parked as the room-ambience mic while close mics handled kick and snare. Another engineer described the vintage tube SM69 as the single mic the main balance of the kit depended on, run overhead in stereo. A third session used a Neumann SM69 as the room mic and called a nice old valve stereo mic "a big part of the room sound." A fourth engineer was tracking a demanding, dynamically unpredictable vocalist. He set a FET SM69 about two and a half feet back through a Langevin preamp and Neve compressors, and described needing a "bulletproof mic" for the job. For guitar ambience, another placed a stereo mic a few feet off a vintage tweed amp's grille and blended it against a close dynamic.

The SM69 was a fixture in professional studio inventories. A studio gear listing from the period includes an SM69 alongside M269c, TLM170, U67, KM54 and SM2 microphones. A 1970s theft appeal from Ronnie Lane's Mobile Studio lists an SM69 among the stolen microphones. It appears in both tube and FET forms. The FET version is the one in the choir session and the vocal date. A U.K. distributor's price list quoted the SM69-FET at £251, with the Neumann FET range running from the KM-83 at £73 upward.

The reputation, fairly or not, centers on brightness. In a multi-part subjective evaluation of stereo microphones published in Recording Engineer (December 1985, p.78), listeners using the MS technique liked the rather bright, "present" quality for which the SM69 is known. That characterization recurs. The same series' author weighed the SM69FET against other European condensers. He called it exceptionally versatile but not a personal favorite, and put its rather bright quality down possibly to its older capsule and housing.