Peerless SBS-160F35AL01-04
Best box: 3.6 L bass reflex tuned to 41.2 Hz · F3 55.1 Hz
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Comparable 6.5" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless SBS-160F35AL01-04 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
⚠️ Engineering Notice for Builders
- The textbook alignment (3.1 L at 39.2 Hz) would need a 120.0 cm port; the recommendation is retuned to 3.6 L at 41.2 Hz so the port can be built.
- Port length (92.7 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 3.6 Liters |
| Tuning Frequency (Fb) | 41.2 Hz |
| F3 (-3 dB Cutoff) | 55.1 Hz |
| F6 / F10 Extension | 44.0 Hz / 33.6 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 92.7 cm |
| First Pipe Resonance | 185.0 Hz |
| Estimated MOL @ F3 | 100.9 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.62 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 0.877; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 3.9 Liters |
| System Q (Qtc) | 0.877 (above Butterworth) |
| System Resonance (Fc) | 65.3 Hz |
| F3 (-3 dB Cutoff) | 61.2 Hz |
| F6 / F10 Extension | 49.2 Hz / 38.6 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 46.1 Hz |
| Total Q (Qts) | 0.62 |
| Electrical Q (Qes) | 0.694 |
| Mechanical Q (Qms) | 5.84 |
| Equivalent Volume (Vas) | 3.9 Liters |
| Diaphragm Area (Sd) | 123.0 cm² |
| DC Resistance (Re) | 4.1 Ω |
| Efficiency Bandwidth Product (EBP) | 66.5 |
| Linear Excursion (Xmax) | 10.5 mm |
| Thermal Power (Pe) | 150.0 W |
| Nominal Diameter | 6.5" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Peerless SBS-160F35AL01-04?
Load Forge's calculated alignment puts Peerless SBS-160F35AL01-04 in a 3.6 liter vented enclosure tuned to 41.2 Hz, reaching an F3 cutoff of approximately 55.1 Hz.
Can Peerless SBS-160F35AL01-04 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 3.9 liters with a Qtc of 0.877 (above Butterworth), the system exhibits an F3 of 61.2 Hz.
What port dimensions should be used for Peerless SBS-160F35AL01-04 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 92.7 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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