AKG
AKG D7
Dynamic supercardioid handheld vocal mic (Varimotion diaphragm), with hum-bucking coil and a fixed 80 Hz high-pass filter
Power None: a dynamic mic needs no power. Low output: it needs a lot of preamp gain.
- Type
- Dynamic
- Pattern
- Supercardioid
- Sensitivity
- −52 dBV/Pa
- Among 78 dynamics: more output than 75%
- Among 311 mics: more output than 26%
- Self-noise
- 18 dB(A)
- Max SPL
- 147 dB SPL
- Among 36 dynamics: takes louder sound than 83%
- Among 343 mics: takes louder sound than 84%
- Rated range
- 70 – 20k Hz
- Released
- 2008
vs 25 handheld dynamics
More output than 58% of 25 handheld dynamics.
Each stripe is one handheld dynamic with a published sensitivity, and each bar counts them; further right means more output. This mic is in blue.
vs 272 mics
Quieter than 32% of 272 mics.
Each stripe is one mic with a published self-noise, and each bar counts them; further right means quieter. This mic is in blue.
vs 13 handheld dynamics
Takes louder sound than 92% of 13 handheld dynamics.
Each stripe is one handheld dynamic with a published max SPL, and each bar counts them; further right means it takes louder sound. This mic is in blue.
Proximity effect: the bass it gains up close
From the manual, p. 21.
Titled "Frequency Response". Distance, room and smoothing not stated. Solid curve (not labelled; the on-axis response).
Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.
Polar pattern
From the manual, p. 21.
Titled "Polar Diagram"; AKG split plot, 0° at the bottom; 125-1000 Hz on the left half, 2-16 kHz on the right; rings every 5 dB (labels -20, -10, 0). Measuring conditions not stated.
In practice
All specs
| From the manual | ||
|---|---|---|
| Capsule | Dynamic, Varimotion (varying-thickness) laminate diaphragm, mechanical/pneumatic shock mountPatents: "Varimotion varying-thickness diaphragm for dynamic transducers"; the cut sheet calls it "Laminate Varimotion diaphragm" (p. 1); shock mount on p. 13. | p. 21 |
| Sensitivity | −52 dBV/Pa (2.6 mV/Pa)"2.6 mV/Pa (-52 dBV re 1 V/Pa)". | |
| Self-noise | 18 dB(A)to IEC 60268-4. "Equivalent noise level: 18 dB(A) to IEC 60268-4", as printed for this dynamic mic; the cut sheet gives "18 dB-A (IEC 60268-4)" and "Signal/noise ratio (A-weighted) 76 dB". | |
| Max SPL | 147 dB SPL1% THD; also 156 dB SPL, 3% THD. "Max. SPL for 1% / 3% THD: 147 / 156 dB SPL", as printed for this dynamic mic. | |
| Output impedance | 600 ohmmaximum. "≤600 ohms". | |
| Rated load impedance | 2000 ohmminimum, recommended. "≥2000 ohms". | |
| Rated frequency range | 70 Hz to 20 kHz | |
| Connector | XLR-3 male, gold-plated"3-pin XLR"; "gold-plated XLR-type output connector" (cut sheet, p. 1). | |
| Weight | 340 gnet | |
| Dimensions | 51 × 185.2 mmDiameter × length. | |
| Supplied accessories | SA 61 stand adapter; extra internal windscreen; carrying casePackage contents (p. 13); the D7 LTD adds a microfibre cloth. | p. 13 |
| High-pass filter | 80 Hz, permanently on (no switch) | p. 21 |
| Humbucking coil | Integrated (on the capsule) | |
| Finish | D7, D7 S: matte grey-blue; D7 LTD: chrome plated | |
| Grille | Spring-steel wire-mesh cap; zinc-alloy die-cast body | p. 14 |
| Variants | D7 S: with a noiseless on/off switch; D7 LTD: chrome-plated case; both acoustically the same as the D7. D7 WL1: D7 capsule for AKG WMS 4000 and 4500 wireless systems | |
| Shipping weight | 655 g (1.45 lbs.) | p. 21 |
| Patents | Varimotion varying-thickness diaphragm: AT 403.751, US 6.185.809, DE/DK/FI/FR/GB/IT/NL 814.637 | |
| From the other | ||
| Item numbers | D7 3139Z00010; D7 S 3139Z00020; D7 LTD 3139Z00030 | p. 1 |
| Replacement parts | Capsule 2610Z00350; grid cap 3139M11010 (LTD 3139M11030); foam insert 3139Z10010 | |
| From the Recording Hacks page | ||
| Released | 2008 | |
| From the spec sheet | ||
| Signal-to-noise ratio | 76 dBA-weighted | p. 2 |
Documents
- D7, D7 S, D7 LTD user instructionsDE, EN, FR, IT, ES, PT
- D 7 Reference Handheld Dynamic Microphone, cut sheet
- D7 / D7 S / D7 LTD service manualspare parts
- AKG Acoustics D7 | RecordingHacks.com
Copies kept by Mic Archive (manufacturers move and drop their documents). Each is © AKG, unchanged, with its original address.