Genelec 7070A

[Ilkka]

Manufacturer: Genelec
Model: 7070A
Provided by: Genelec
Manufacturer link: Genelec 7070A Active Subwoofer
Price: $2850

Manufacturer specs:
Short term RMS @ 1 m (halfspace) 112 dB SPL
Input channels 6
Sum out outputs 1
Driver 12"
Free field frequency response 19 - 85 (120) Hz +/- 3 dB
Bass level +12 to -6 dB (variable)
Bass roll-off 0 to -6 dB (2 dB/step)
Phase adjustment 0 to 270° (90°/step) @85 Hz
Amplifier power 250 W
Dimensions (H x W x D) 625 x 555 x 490 mm, 24 5/8 x 21 7/8 x 19 5/16”
Weight 50 kg (110 lb)

Configuration as tested:
Phase: 0 degrees
Bass roll-off: 0 dB
Orientation: Woofer facing the mic

[Ilkka]

+/- 3 dB points: 16.5 Hz - 110 Hz

[Ilkka]

[Ilkka]

Similar to its smaller brothers, only now with a 12” driver and naturally larger enclosure, the 7070A provides a flat frequency response with a really good 16.5 Hz extension. This suits better for rooms not having much deep bass room gain. Otherwise the low end of the response tilts up and the sound becomes too bottom heavy. The low pass filter slope is very steep, but the lowest setting is only around 80 Hz, meaning a proper 2-channel use requires an external filter. The 105 dB sweep was affected by the built-in limiter which limits the amp output in order to protect the voice coil from over-heating. That causes the sudden drop in output. You won't see this kind of phenomenon with normal program material. THD stays really low above 50 Hz, but starts to climb up at lower frequencies during 100 dB and 105 dB sweeps. Composition of the THD is a typical for all the Genelec’s, 3rd harmonic being the dominant one. Group delay doesn’t hit the 1 cycle limit until at very low frequencies. There’s quite a lot of excessive ringing around the tuning frequency/high pass at ~20 Hz. It could pull through the 100 dB level in spectral contamination test, but not without a really high overall distortion.

+ Very good extension
+ Flat frequency response
+ Extremely low upper bass distortion at all levels
+ Steep crossover
+ Build quality and sturdy enclosure

- Medium deep bass maximum output capability
- High deep bass distortion at higher than medium output levels
- Some ringing around the tuning frequency
- Somewhat expensive compared to performance