Arylic BK501/651 — Decision Profile
L2 Decision Profile · documentation + editorial assessment
Quick verdict
A passive bookshelf pair selected by exact variant and amplifier load capability
Avoid if: Direct connection to a phone, TV line output or Bluetooth without an amplifier
Evidence checked: 2026-10-17. Manufacturer documentation; no independent SoundPath Lab listening, measurement, compatibility or firmware retest.
System conditions
Use a stereo amplifier suitable for 4-ohm speakers and speaker cable; the official >30 W amplifier suggestion is not a maximum safe-volume guarantee
Documented specifications
| Item | Specification and conditions |
|---|---|
| Identity | Two passive variants: BK501 with 5-inch woofer; BK651 with 6.5-inch woofer; both two-way AMT designs |
| Power handling | BK501 nominal/peak 40/80 W; BK651 50/100 W; handling is not amplifier output |
| Load/sensitivity | Both nominal 4 ohms; BK501 85 dB, BK651 86 dB at 2.0 V/1 m |
| Response | BK501 54 Hz–40 kHz; BK651 42 Hz–40 kHz; tolerance not stated |
Limits and source qualifications
Minimum impedance, response tolerance and measured room output remain unknown; the larger model data is not assigned to BK501
- The shared marketing headline says 100 W and one paragraph describes a 6.5-inch woofer across the family; the model-specific table and variant selector take precedence
Alternatives by need
SE100 documents 4-ohm nominal/3.2-ohm minimum load; Bronze 200 6G is a larger floorstanding alternative. Compare placement and load, not unsupported sound rankings
Keep or upgrade
Keep a working system that already meets these requirements. Consider a change only when the documented connection, control or system role solves a specific unmet need; no measured sound-quality upgrade is claimed.
Evidence, support and reassessment
Review scope
Exact-model primary specification and connection sections cited below were reviewed. Source claims and editorial system-fit reasoning are distinct from independent listening, measurement, compatibility or firmware tests; none were added.
Actual sound, under-load output, room/ear fit, latency and long-term reliability remain untested. Existing scores, Builder qualification and owner/test records were not reassessed.
Firmware and regional support
Local stock, authorized sales, transaction prices and long-term support duration are not established by this documentation review. Dated regional announcements apply only to their stated territory and terms. Existing dated price and owner evidence is retained.
No installed firmware version or issue resolution was retested. Follow the exact-model official support workflow.
Reassess when evidence changes
Reassess on verified hardware or firmware changes, clarification of a source conflict, material support/compatibility changes, or accepted independent testing.
No new six-month ownership evidence was added; existing owner and issue records remain unchanged.
Related records and tools
- Eversolo SE100
- Monitor Audio Bronze 200 6G
- Product directory
- System Builder
- Issues and limitations
- Firmware and app tracker
- Compare this product
Sources checked
Revision: 2026-10-17 — L0/L1 to L2 after model-level documentation and decision review. Product identity and existing scores/qualification retained. L2 is evidence coverage, not independent test acceptance.
Member knowledge · editor reviewed
Questions, owner experience and product issues
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