Ascend Acoustics Sierra Duo V2 LCR Titan is a passive bookshelves that cost around 1338 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: 86.0 dB
    • Measured: 85.8 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 79.1Hz (resp. 67.4Hz).
  • Reference level is normalised to -0.3dB 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 3.93 and would be 6.55 with a perfect subwoofer.
      • Details: NBD: ON 0.396, LW 0.366, SP 0.393, PIR 0.334; SM: SP0.339, PIR0.368; LFQ 0.902, LFX 58Hz
    • Tonality (Preference) Score is 5.46 with an EQ and would be 7.71 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.278, LW 0.241, SP 0.314, PIR 0.227; SM: SP0.451, PIR0.604; LFQ 0.902, LFX 48Hz
Ascend Acoustics Sierra Duo V2 LCR Titan

Vendor specifications

  • Impedance 8 Ohm
  • Size
    • Width 146mm
    • Height 412mm
    • Depth 152mm
  • Weight 5.4kg

Directivity (-6dB)

AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 46.0 0.89 2.91
PK 80.0 2.71 2.84
PK 125.0 1.14 -3.12
PK 279.0 0.84 1.11
PK 792.0 2.77 1.98
PK 1381.0 0.32 -1.49
PK 2765.0 0.99 2.12
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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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