MISCO 50X90-WB04-01
Best box: 0.17 L sealed · Fc 294.2 Hz · F3 297.1 Hz
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Comparable 2.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the MISCO 50X90-WB04-01 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.
Textbook Bass Reflex — not recommended (10.5 dB bass hump)
PORT BUILDABLE| Net Box Volume (Vb) | 1.5 Liters |
| Tuning Frequency (Fb) | 176.8 Hz |
| F3 (-3 dB Cutoff) | 158.3 Hz |
| F6 / F10 Extension | 151.2 Hz / 142.7 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 9.0 cm |
| First Pipe Resonance | 1916.0 Hz |
| Estimated MOL @ F3 | 97.2 dB SPL |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 1.15 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.626; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 0.17 Liters |
| System Q (Qtc) | 1.626 (above Butterworth: Qtc cannot fall below Qts (1.15)) |
| System Resonance (Fc) | 294.2 Hz |
| F3 (-3 dB Cutoff) | 297.1 Hz |
| F6 / F10 Extension | 259.5 Hz / 218.2 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 208.0 Hz |
| Total Q (Qts) | 1.15 |
| Electrical Q (Qes) | 1.642 |
| Mechanical Q (Qms) | 3.84 |
| Equivalent Volume (Vas) | 0.2 Liters |
| Diaphragm Area (Sd) | 21.5 cm² |
| DC Resistance (Re) | 3.8 Ω |
| Efficiency Bandwidth Product (EBP) | 126.7 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | 7.0 W |
| Nominal Diameter | 2.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for MISCO 50X90-WB04-01?
A simple ported box is not recommended for MISCO 50X90-WB04-01: the textbook alignment (1.5 liters tuned to 176.8 Hz) needs a 9.0 cm port, and no nearby retune stays buildable without a bass hump. A sealed box, a passive radiator or a folded duct is the practical choice.
Can MISCO 50X90-WB04-01 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 0.17 liters with a Qtc of 1.626 (above Butterworth: Qtc cannot fall below Qts (1.15)), the system exhibits an F3 of 297.1 Hz.
What port dimensions should be used for MISCO 50X90-WB04-01 to avoid port chuffing?
A straight 5.0 cm port would need 9.0 cm of length, which does not fit a practical cabinet. Use a passive radiator or a folded/3D duct instead of a straight tube.
Shareable Acoustic Card for Forums & Social Media
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