Gladen M-LINE M10
Best box: 1.9 L bass reflex tuned to 86.6 Hz · F3 129.5 Hz
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Comparable 4.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Gladen M-LINE M10 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 (1.5 L at 108.3 Hz) would need a 29.9 cm port; the recommendation is retuned to 1.9 L at 86.6 Hz so the port can be built.
- 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) | 1.9 Liters |
| Tuning Frequency (Fb) | 86.6 Hz |
| F3 (-3 dB Cutoff) | 129.5 Hz |
| F6 / F10 Extension | 104.7 Hz / 67.7 Hz |
| Port Inner Diameter ESTIMATED | Ø 5.0 cm |
| Port Physical Length | 37.7 cm |
| First Pipe Resonance | 456.0 Hz |
Sealed (Acoustic Suspension) — compromise
SUITS INFINITE / OPEN BAFFLEWith Qts 0.92 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.301; for a flat response this driver is better used on an infinite (IB) or open baffle.
| Net Box Volume (Vb) | 1.2 Liters |
| System Q (Qtc) | 1.301 (above Butterworth: Qtc cannot fall below Qts (0.92)) |
| System Resonance (Fc) | 180.2 Hz |
| F3 (-3 dB Cutoff) | 148.2 Hz |
| F6 / F10 Extension | 126.8 Hz / 104.7 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 127.4 Hz |
| Total Q (Qts) | 0.92 |
| Electrical Q (Qes) | 1.183 |
| Mechanical Q (Qms) | 4.14 |
| Equivalent Volume (Vas) | 1.2 Liters |
| Diaphragm Area (Sd) | 56.0 cm² |
| DC Resistance (Re) | 2.5 Ω |
| Efficiency Bandwidth Product (EBP) | 107.7 |
| Linear Excursion (Xmax) | N/A mm |
| Thermal Power (Pe) | N/A W |
| Nominal Diameter | 4.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Gladen M-LINE M10?
Load Forge's calculated alignment puts Gladen M-LINE M10 in a 1.9 liter vented enclosure tuned to 86.6 Hz, reaching an F3 cutoff of approximately 129.5 Hz.
Can Gladen M-LINE M10 be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 1.2 liters with a Qtc of 1.301 (above Butterworth: Qtc cannot fall below Qts (0.92)), the system exhibits an F3 of 148.2 Hz.
What port dimensions should be used for Gladen M-LINE M10 to avoid port chuffing?
Xmax is not published for Gladen M-LINE M10, so the port is an empirical estimate: a 5.0 cm diameter with a length of 37.7 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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