Peerless STW-350F188PR01-04
Best box: 135.4 L bass reflex tuned to 17.7 Hz · F3 16.5 Hz
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Comparable 15.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Peerless STW-350F188PR01-04 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
- Port length (77.8 cm) exceeds a straight internal run; use an elbow bend, slotted vent or 3D folded duct to fit the enclosure.
- Large enclosure volume (135.4 L) requires extensive internal matrix bracing to prevent panel resonance.
Recommended Bass Reflex (Vented)
PORT NEEDS ELBOW / 3D| Net Box Volume (Vb) | 135.4 Liters |
| Tuning Frequency (Fb) | 17.7 Hz |
| F3 (-3 dB Cutoff) | 16.5 Hz |
| F6 / F10 Extension | 14.8 Hz / 13.3 Hz |
| Port Inner Diameter | Ø 12.5 cm |
| Port Physical Length | 77.8 cm |
| First Pipe Resonance | 221.0 Hz |
| Estimated MOL @ F3 | 115.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 66.3 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 32.0 Hz |
| F3 (-3 dB Cutoff) | 32.9 Hz |
| F6 / F10 Extension | 24.5 Hz / 18.3 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 21.0 Hz |
| Total Q (Qts) | 0.46 |
| Electrical Q (Qes) | 0.475 |
| Mechanical Q (Qms) | 14.6 |
| Equivalent Volume (Vas) | 90.3 Liters |
| Diaphragm Area (Sd) | 775.0 cm² |
| DC Resistance (Re) | 12.0 Ω |
| Efficiency Bandwidth Product (EBP) | 44.2 |
| Linear Excursion (Xmax) | 22.4 mm |
| Thermal Power (Pe) | 2500.0 W |
| Nominal Diameter | 15.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Peerless STW-350F188PR01-04?
Load Forge's calculated alignment puts Peerless STW-350F188PR01-04 in a 135.4 liter vented enclosure tuned to 17.7 Hz, reaching an F3 cutoff of approximately 16.5 Hz.
Can Peerless STW-350F188PR01-04 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 66.3 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 32.9 Hz.
What port dimensions should be used for Peerless STW-350F188PR01-04 to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 12.5 cm with a length of 77.8 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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