Visaton FR 13 WP - 4 Ohm (white)
Best box: 3.5 L bass reflex tuned to 85.0 Hz · F3 133.0 Hz
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Comparable 5.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Visaton FR 13 WP - 4 Ohm (white) 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
- Xmax is not published, so the port size is an empirical estimate (area ≥ 12 in² per ft³ of net volume, minimum by driver size), not a displacement calculation. Check air velocity in Load Forge Studio.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 3.5 Liters |
| Tuning Frequency (Fb) | 85.0 Hz |
| F3 (-3 dB Cutoff) | 133.0 Hz |
| F6 / F10 Extension | 116.5 Hz / 95.6 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 19.7 cm |
| First Pipe Resonance | 873.0 Hz |
| Estimated MOL @ F3 | 102.4 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.17 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.655; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 4.4 Liters |
| System Q (Qtc) | 1.655 (above Butterworth: Qtc cannot fall below Qts (1.17)) |
| System Resonance (Fc) | 141.4 Hz |
| F3 (-3 dB Cutoff) | 116.5 Hz |
| F6 / F10 Extension | 101.7 Hz / 85.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 100.0 Hz |
| Total Q (Qts) | 1.17 |
| Electrical Q (Qes) | 2.207 |
| Mechanical Q (Qms) | 2.49 |
| Equivalent Volume (Vas) | 4.4 Liters |
| Diaphragm Area (Sd) | 78.0 cm² |
| DC Resistance (Re) | 3.8 Ω |
| Efficiency Bandwidth Product (EBP) | 45.3 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 25.0 W |
| Nominal Diameter | 5.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Visaton FR 13 WP - 4 Ohm (white)?
Load Forge's calculated alignment puts Visaton FR 13 WP - 4 Ohm (white) in a 3.5 liter vented enclosure tuned to 85.0 Hz, reaching an F3 cutoff of approximately 133.0 Hz.
Can Visaton FR 13 WP - 4 Ohm (white) be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 4.4 liters with a Qtc of 1.655 (above Butterworth: Qtc cannot fall below Qts (1.17)), the system exhibits an F3 of 116.5 Hz.
What port dimensions should be used for Visaton FR 13 WP - 4 Ohm (white) to avoid port chuffing?
Xmax is not published for Visaton FR 13 WP - 4 Ohm (white), so the port is an empirical estimate: a 5.0 cm diameter with a length of 19.7 cm (area at least 12 in² per ft³ of net volume). Check the air velocity at your power level in Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
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