thewas
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Since it seemingly doesn't have a thread yet, EAC just posted its measurements and review in YT:
Summary of the Review Video of Fosi Audio SP 601 Bookshelf Speakers:
The reviewer gave a negative and honest assessment of the Fosi Audio SP 601 bookshelf speakers, despite preferring not to deliver bad reviews. After trying various placements and setups, they were consistently dissatisfied with the sound and found it confusing and hard to diagnose. They initially suspected a wiring issue but ruled that out.
Upon reviewing the speaker's measurements, the flaws became clearer:
The speaker specs:
The reviewer compared it unfavorably to the Triangle Borea BR03, another speaker they didn’t like due to inconsistent response curves.
Finally, the video included a brief unsponsored plug for dog ear-cleaning wipes (EarthRated), a sound demo, and standard YouTube support appeals (Patreon, affiliate links).
Bottom line: The SP 601 is a deeply flawed speaker whose issues are complex and overlapping. EQ and room treatment help, but it still falls short of expectations.
Summary of the Review Video of Fosi Audio SP 601 Bookshelf Speakers:
The reviewer gave a negative and honest assessment of the Fosi Audio SP 601 bookshelf speakers, despite preferring not to deliver bad reviews. After trying various placements and setups, they were consistently dissatisfied with the sound and found it confusing and hard to diagnose. They initially suspected a wiring issue but ruled that out.
Upon reviewing the speaker's measurements, the flaws became clearer:
- Midrange is recessed
- Upper mids and highs (around 4–6 kHz) are sharply boosted, leading to sibilance and edginess
- Bass rolls off early, around 70 Hz
The speaker specs:
- Two-way bookshelf design
- 6.5” woofer with paper/aluminum cone
- 1.5” silk dome tweeter
- 85 dB sensitivity, 4-ohm impedance, 80W RMS power
- Hollow-sounding midrange
- Highly irregular frequency response with alternating dips and boosts
- Room reflections and sidewall issues, making EQ alone ineffective
- Mild enclosure resonance, likely due to poor internal damping
- Compression and distortion at higher volumes, especially around the crossover
The reviewer compared it unfavorably to the Triangle Borea BR03, another speaker they didn’t like due to inconsistent response curves.
Finally, the video included a brief unsponsored plug for dog ear-cleaning wipes (EarthRated), a sound demo, and standard YouTube support appeals (Patreon, affiliate links).
Bottom line: The SP 601 is a deeply flawed speaker whose issues are complex and overlapping. EQ and room treatment help, but it still falls short of expectations.