Ascend Acoustics Sierra 1 V2 is a passive bookshelves that cost around 998 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is Ascend Acoustics.
  • Format of the data is a set of 36 horizontal and 36 vertical measurements .
  • Sensitivity:
    • Company: 83 dB
    • Measured: 81.6 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 53.0Hz (resp. 45.0Hz).
  • Reference level is normalised to -0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.7dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.7 and would be 8.65 with a perfect subwoofer.
      • Details: NBD: ON 0.309, LW 0.22, SP 0.21, PIR 0.17; SM: SP0.985, PIR0.97; LFQ 0.524, LFX 41Hz
    • Tonality (Preference) Score is 7.04 with an EQ and would be 8.82 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.249, LW 0.181, SP 0.22, PIR 0.161; SM: SP0.957, PIR0.965; LFQ 0.524, LFX 37Hz
  • Link to original Review: eac review. Links to other reviews: yt review , history review , asr review .
Ascend Acoustics Sierra 1 V2

Vendor specifications

  • Impedance 8 Ohm
  • Size
    • Width 190mm
    • Height 362mm
    • Depth 267mm
  • Weight 8.4kg

Directivity (-6dB)

AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 41.0 0.78 2.98
PK 83.0 1.66 -1.56
PK 211.0 1.58 0.9
PK 289.0 2.9 0.59
PK 1244.0 2.23 -0.68
PK 3405.0 2.21 1.2
PK 5536.0 2.26 0.81
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Quick config:
Quick config:
Quick config:
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