Monoprice Monolith THX Compact Satellite is a passive bookshelves that cost around 125 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity:
    • Company: 81 dB
    • Measured: 79.5 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 82.0Hz (resp. 71.8Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.0dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.26 and would be 6.25 with a perfect subwoofer.
      • Details: NBD: ON 0.497, LW 0.47, SP 0.451, PIR 0.436; SM: SP0.764, PIR0.479; LFQ 0.493, LFX 71Hz
    • Tonality (Preference) Score is 5.48 with an EQ and would be 8.23 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.348, LW 0.308, SP 0.283, PIR 0.262; SM: SP0.966, PIR0.947; LFQ 0.437, LFX 62Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
Monoprice Monolith THX Compact Satellite

Vendor specifications

  • Impedance 4 Ohm
  • Size
    • Width 160mm
    • Height 153mm
    • Depth 150mm
  • Weight 1.9kg

Directivity (-6dB)

AutomaticEQ (IIR)
Set preamp gain to: -2.7dB.
Type Freq Q Gain
PK 65.0 2.86 2.43
PK 92.0 2.99 1.28
PK 765.0 2.99 1.06
PK 1532.0 2.99 3.0
PK 2862.0 1.14 -1.98
PK 5536.0 2.22 -2.05
PK 16239.0 0.51 -2.97
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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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