Alkuperäinen juttu on ilmestynyt Rockway-blogissa.

****

****

In 1960, Sennheiser’s perhaps best-known microphone, the Sennheiser MD421, was released. The MD421 is a rather large and heavy microphone, and it is designed in quite a unique way.

This microphone uses a rather massive capsule with a large (27 mm/1.1 inch) diaphragm, which is carefully protected from handling and wind noise. In addition, the capsule has its own humbucker coil, which filters out electromagnetic hum and buzz out of the microphone signal.

A short “bass pipe” extends from the bottom of the capsule into the center of the microphone housing, which acts as a “bass chamber.” Depending on the year of manufacture of the MD421, this chamber may be either simply the plastic housing of the mic, or there may even be an injection-molded metal chamber inside the microphone.

A five-position rotary switch for the bass cut is embedded in the end of the housing – one extreme position “M” (Musik; music) lets the MD421 pass through the entire frequency range, while the second extreme position “S” (Sprache; speech) effectively removes most of the bass frequencies from the signal.

The new Sennheiser MD421 was available in versions with the German Klein-Tuchel connector (a larger and sturdier cousin of the DIN connector), as well as with an XLR connector.

The new model’s stand adapter was quite unique; the adapter had a long swivel leg on the stand side, while on the side that went into the microphone there was a rail with a spring mechanism. This rail is pushed into a groove in the belly of the microphone until the mechanism clicks into place.

The Sennheiser MD421 model became a huge sales success upon its release. Although the new microphone was relatively expensive, the quality of the MD421 was so convincing that the microphone was seen in almost every TV studio, concert stage, podium, and recording studio in the 1960s and 1970s – especially in Europe. When I was six years old, I had two things I wanted desperately to own – a Fender Jazz bass and “that creamy white Sennheiser”.

Although the MD421 was originally intended to be “everywhere”, over time the special strengths of the microphone led to it being seen most often in front of brass instruments, drums, and guitar and bass amplifiers.

The Sennheiser’s light-colored housing was permanently changed to black sometime in the late 1970s, and parallel versions of the MD421 were also introduced, for example some without an internal bass filter.

The Sennheiser MD421 has maintained its position, especially in the recording studio, to this day. The only criticisms are the model’s large size and weight, which can make it difficult to position the mic, and the reliability of the mic adapter, especially in heavy use. A microphone bouncing from a tom onto the drummer’s lap is not likely to inspire much confidence.

****

Sennheiser has finally listened to everyone who has been asking for a scaled-down version of the MD421 model. A few weeks ago, the Sennheiser MD421 Kompakt, a compact parallel version of the old classic, was released.

The Kompakt version (street price around 290 euros) is almost half the length of the original MD421 (12 cm versus 21.5 cm) and more than half the weight (159 g versus 385 g).

The microphone capsule in the new Kompakt version is exactly the same as in the classic version, and the volume of the bass chamber in the shorter body has been kept the same size. Thanks to this, it is no surprise that the frequency response (30 Hz – 17 kHz) and other technical values ​​​​of the MD421 Kompakt are also identical. The microphone’s shrinkage has been achieved by removing the bass filter unit of its big brother from the Kompakt.

The Sennheiser MD421 Kompakt does not have a separate stand adapter, but here it is implemented as part of the microphone body. For drum recordings, the new mic is also available in a set version (street price approximately 315 euros), which already includes the MZH drum adapter suitable for the Kompakt. A storage bag is included in both sales packages.

The convenient size and low weight of the MD421 Kompakt make it very easy to place the new mic. The more compact body does not feel toy-like at all, but the mic has the same solid construction as its big cousin. I think the MD421 Kompakt would also be an excellent choice for a vocal mic on stage, as you don’t have to worry about your teeth, as you would with the full-size version, if someone hits the mic stand while you’re singing.

****

At least to my ears, the Sennheiser MD421 Kompakt sounds a little warmer than a Shure SM57, and the new mic’s presence emphasis is also at a higher frequency than the Shure. Whether this is a “good” or “bad” feature depends entirely on the source signal and your own preference.

****

For this review I recorded two demo songs with the Sennheiser. The first demo is a completely acoustic song, where every instrument and sound has been recorded with the MD421 Kompakt and a Cranborne Camden EC2 mic preamp. Song number two is a rock song, where the drums sounds are samples, but the bass and guitars have been captured with the MD421 Kompakt and the built-in microphone preamp of Universal Audio’s Volt 2 interface.

****