July 31st 2018: Site development on hold until Autumn. Following last week's unwelcome hacker attack, the Cambridge-MT site seems now to be back in a reasonably stable and usable condition, although we can't guarantee we've completely removed all malicious scripts from the server. However, I was already planning to completely redevelop the site in September/October to accompany the forthcoming second edition of Mixing Secrets For The Small Studio, during which process the server will be totally cleaned out and reinitialised. Until then, though, I won't be adding any new resources, so as to avoid destabilising the current site in the short term. If you'd like to support my ongoing development of this site, please consider joining the Cambridge-MT Patrons. Thanks for your understanding. Mike S.



Home Training & Advice Studio Services About CMT   Recording Secrets For The Small Studio

The 'Recording Secrets' Library Of Microphone Positions:
Acoustic Upright Bass

The following audio examples were recorded with session bass player Markus Braun in a spacious, wooded-floored performance space with a generous (and pleasant-sounding) room reverb. The microphones used were Avantone CK1 small-diaphragm condensers and Superlux R102 ribbons, preamplified via an Audient ASP008 multi-channel microphone preamp and recorded digitally without any signal processing. A Radial Engineering Pro 48 DI box was also fed from the instrument's bridge pickup system and recorded alongside the microphone recordings, so you can experiment with how it combines in practice.


Part Time Recordings -- Online Mixing And Mastering

MULTIMIC SETUP 1

This microphone setup used five Avantone CK1 microphones (with their cardioid capsules) and three Superlux R102 ribbon microphones (with figure-eight pickup by nature) to record the vertical dispersion of an acoustic bass, for both plucked and bowed performance techniques. A DI signal was also captured simultaneously.

  • Vertical Dispersion At Different Angles/Distances: For the first set of audio examples, the vertical array of eight mics (five condensers and three ribbons) were set up around 25cm away from the front of the instrument, directly on-axis to its centre line (ie. the tailpiece, bridge, and fingerboard), as shown in the picture. Then, with the bass spike remaining in the same position, the instrument was rotated about 30 degrees off-axis to the array in both directions to generate a further two sets of audio files. Finally, the on-axis instrument position was repeated, but at a distance of around 50cm, generating the fourth set of files.


(For a higher-resolution image, click here.)

Mic Distance/Angle Mic Type Position
25cm 50cm
Mics On-axis 30° To Player's Left 30° To Player's Right Mics On-axis
Plucked Bowed Plucked Bowed Plucked Bowed Plucked Bowed
A WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser Pointing towards the fingerboard at a level midway up the instrument's neck
B WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser Pointing towards the fingerboard at the level of the neck/body joint
C WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser Pointing towards the fingerboard, at a level midway between the bridge and the neck/body joint
D WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser Pointing directly at the bridge
E WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser Pointing towards the tailpiece at a level midway between the bridge and the floor
F WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone Pointing towards the fingerboard at the level of the neck/body joint
G WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone Pointing slightly downwards at the bridge
H WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone Pointing towards the tailpiece at a level midway between the bridge and the floor
(DI) WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp WAV/MP3 bp (Active DI box) DI signal from instrument's bridge pickup system


MULTIMIC SETUP 2

This microphone setup used three Avantone CK1 microphones (with their cardioid capsules) and three Superlux R102 ribbon microphones (with figure-eight pickup by nature) to record the horizontal dispersion of an acoustic bass, for both plucked and bowed performance techniques. In addition, a further two CK1s were set up in lower and higher positions to relate the audio examples better to those in Multimic Setup 1. Again, a DI signal was also captured simultaneously.

  • Horizontal & Vertical Dispersion: For this set of audio examples, the condenser microphones were set up in a cross-shaped formation, with all mics pointing inwards towards the instrument from a distance of around 60cm. The three ribbon microphones were set up alongside each of the horizontal trio of condensers. Mics B, D, E, and G were all directly on-axis to the instrument's centre line (ie. the tailpiece, bridge, and fingerboard); Mics A and F were around 40 degrees off-axis to the player's left; and Mics C and H were around 40 degrees off-axis to the player's right.


(For a higher-resolution image, click here.)

Mic Plucked Bowed Mic Type Distance Angle
A WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser 60cm 40 degrees to the player's left, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
B WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser 60cm On axis to the instrument, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
C WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser 60cm 40 degrees to the player's right, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
D WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser 60cm On axis to the instrument, pointing a little downwards towards the neck/body joint
E WAV/MP3 bp WAV/MP3 bp Small‑diaphragm cardioid condenser 60cm On axis to the instrument, pointing towards the tailpiece at a level midway between the bridge and the floor
F WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone 60cm 40 degrees to the player's left, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
G WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone 60cm On axis to the instrument, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
H WAV/MP3 bp WAV/MP3 bp Figure‑eight ribbon microphone 60cm 40 degrees to the player's right, pointing towards the fingerboard at a level midway between the bridge and the neck/body joint
(DI) WAV/MP3 bp WAV/MP3 bp (Active DI box) DI signal from instrument's bridge pickup system

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