RØDE Microphones
RØDE NT-SF1
Ambisonic mic: four condenser capsules in a tetrahedron, recorded as four A-format channels
Power Phantom, 48 V, 6.2 mA per channel.
- Type
- Condenser
- Self-noise
- 17 dB(A)
- Among 272 mics: quieter than 41%
- Rated range
- 20 – 20k Hz
vs 258 condensers
Quieter than 40% of 258 condensers.
Each stripe is one condenser with a published self-noise, and each bar counts them; further right means quieter. This mic is in blue.
Proximity effect: the bass it gains up close
From the spec sheet, p. 1.
Titled "Frequency response", "1/3 Smoothed Frequency Response (Hz)"; relative dB. Which channel (one capsule or the B-format W signal), distance and room are not stated.
Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.
Polar pattern
From the spec sheet, p. 1.
Titled "Polar pattern"; three frequencies; rings every 2 dB, scale bar "dB rel. 1V/Pa" from +5 to -25. Which channel is shown is not stated: its cardioid shape suggests one capsule.
In practice
All specs
| From the spec sheet | ||
|---|---|---|
| Self-noise | 17 dB(A)"Equivalent Noise: 17 dBA". Not said whether per channel. | p. 1 |
| Signal-to-noise ratio | 77 dB"Signal to noise Ratio: 77 dB". | |
| Rated frequency range | 20 Hz to 20 kHz"Frequency Range: 20Hz - 20kHz". | |
| Powering | phantom, 48 V, 6.2 mA per channel | |
| Current draw | 6.2 mAper channel, 48 V phantom | |
| Connector | 10-pin XLR (cable to 4 × XLR-3 supplied) | |
| Weight | 286 g | |
| Dimensions | 192.3 × 45.7 mmHeight 192.3 mm, head 45.7 mm wide; body diameter 25.1 mm. | |
| Supplied accessories | 10-pin XLR to 4 × 3-pin XLR cable; Donut shockmount; Pop shield; Furry"In the box". | |
| Frequency response | 30 Hz to 20 kHz ±3 dB; 20 Hz to 20 kHz ±4 dB | |
| Active electronics | JFET impedance converter with bipolar output buffer | |
| Capsules | 4 × TF-45C, tetrahedral array | |
| Finish | Hard-wearing thin-film ceramic finish | |
Documents
- SoundField by RØDE NT-SF1 datasheet
Copies kept by Mic Archive (manufacturers move and drop their documents). Each is © RØDE Microphones, unchanged, with its original address.