Dayton Audio DCS165-4
subwoofer · EBP 99 → suits either box · nominal (full) — Dayton Audio datasheet (https://www.daytonaudio.com/images/resources/295-198--dcs165-4-spec-sheet.pdf)
Thiele/Small parameters
| Fs (resonance) | 35.7 Hz |
| Qts | 0.34 |
| Qes / Qms | 0.36 / 6.62 |
| Vas | 12.1 L |
| Re / nominal Z | 3.4 Ω / 4 Ω |
| Xmax | 6.0 mm |
| Sensitivity | 83.7 dB (1 W/1 m, calc); 87.4 dB (2.83 V/1 m, mfr) |
| Power handling | 100 W |
Published (nominal) values, params full — verify by measurement (DATS/REW) before building.
Datasheet (PDF) ↗ — manufacturer-hosted
Recommended enclosures
| Sealed (Qtc 0.707) — Vb | 3.6 L |
| Sealed — Fc / F3 | 74.2 / 74.2 Hz |
| Ported (suggested) — Vb | 6.9 L |
| Ported — Fb / F3 | 42.5 / 44.8 Hz |
Affiliate disclosure: some links are affiliate links and we may earn a commission on qualifying purchases at no extra cost to you. Prices are estimates at the time of writing; verify on the retailer's site.
About this driver
The Dayton Audio DCS165-4 is a 6″ subwoofer with a free-air resonance of 35.7 Hz and a total Q (Qts) of 0.34. Its efficiency-bandwidth product (EBP) of 99 points toward either alignment. In a 3.6 L sealed box it reaches an F3 of 74.2 Hz (Qtc 0.707); a suggested 6.9 L box tuned to 42.5 Hz extends to about 44.8 Hz. See the sealed vs ported guide for how to choose.
Recommended partners
modeled estimateThe tweeters below pair well with the Dayton Audio DCS165-4 in a two-way design — each grade is a modeled estimate of the crossover match, with a suggested crossover point. Open any pair in the guided builder to design the crossover and total the parts.
- Seas M64F001Good match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas MR18REX-XFGood match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T18REX-XFCGood match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T25CF002Good match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T29CF002Good match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair → - Seas T29D001Good match· 92/100
Suggested crossover 1.31 kHz (4th-order, Linkwitz-Riley)
Build this pair →
Modeled estimate from T/S + geometry — no measurements. The verdict is robust; it improves with measured FRD/ZMA data.