Versatile Load

DS18 NXL-8

Best box: 53.4 L bass reflex tuned to 47.6 Hz · F3 65.8 Hz

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Comparable 8.0" Drivers

Drivers with similar piston area, resonance and Qts — useful alternatives when the DS18 NXL-8 does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.

DS18

CF-8M

8.0" · Fs 56.0 Hz · Qts 0.805 · Vas 66.7 L

DS18

294-8074

8.0" · Fs 50.0 Hz · Qts 0.89 · Vas 56.9 L

DS18

SLC8S

8.0" · Fs 50.0 Hz · Qts 0.787 · Vas 7.8 L

Goldwood

GW-208/8 8" OEM Woofer 8 Ohm

8.0" · Fs 56.1 Hz · Qts 0.86 · Vas 22.9 L

JL Audio

M8IB5-SG-TB

8.0" · Fs 53.4 Hz · Qts 0.778 · Vas 16.1 L

LaVoce

NBASS08-20-32

8.0" · Fs 57.0 Hz · Qts 0.67 · Vas 20.7 L

Compare them in the same box → Browse all 8.0" drivers → All DS18 drivers →

Recommended Bass Reflex (Vented)

PORT BUILDABLE

Net Box Volume (Vb)	53.4 Liters
Tuning Frequency (Fb)	47.6 Hz
F3 (-3 dB Cutoff)	65.8 Hz
F6 / F10 Extension	55.6 Hz / 43.7 Hz
Port Inner Diameter	Ø 6.8 cm
Port Physical Length	4.1 cm
First Pipe Resonance	4159.0 Hz
Estimated MOL @ F3	114.3 dB SPL

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Sealed (Acoustic Suspension) — compromise

SUITS INFINITE / OPEN BAFFLE

With Qts 0.805 a Butterworth (Qtc 0.707) box would be many times Vas. A box equal to Vas reaches Qtc 1.138; for a flat response this driver is better used on an infinite (IB) or open baffle.

Net Box Volume (Vb)	66.7 Liters
System Q (Qtc)	1.138 (above Butterworth: Qtc cannot fall below Qts (0.81))
System Resonance (Fc)	79.2 Hz
F3 (-3 dB Cutoff)	60.7 Hz
F6 / F10 Extension	50.9 Hz / 41.3 Hz
Air Spring Linearity	High (Zero port compression)

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Thiele/Small Parameters

Resonance (Fs)	56.0 Hz
Total Q (Qts)	0.805
Electrical Q (Qes)	0.899
Mechanical Q (Qms)	7.7

Equivalent Volume (Vas)	66.7 Liters
Diaphragm Area (Sd)	206.1 cm²
DC Resistance (Re)	3.15 Ω
Efficiency Bandwidth Product (EBP)	62.3

Linear Excursion (Xmax)	8.5 mm
Thermal Power (Pe)	125.0 W
Nominal Diameter	8.0"
Catalog Source	Load Forge catalog (manufacturer datasheets and retailer listings)

Frequently Asked Questions

What is the recommended ported (bass reflex) box volume for DS18 NXL-8?

Load Forge's calculated alignment puts DS18 NXL-8 in a 53.4 liter vented enclosure tuned to 47.6 Hz, reaching an F3 cutoff of approximately 65.8 Hz.

Can DS18 NXL-8 be used in a sealed box?

Yes. In a sealed (acoustic suspension) enclosure of 66.7 liters with a Qtc of 1.138 (above Butterworth: Qtc cannot fall below Qts (0.81)), the system exhibits an F3 of 60.7 Hz.

What port dimensions should be used for DS18 NXL-8 to avoid port chuffing?

Sized from cone displacement (Sd × Xmax), a minimum port diameter of 6.8 cm with a length of 4.1 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.

Shareable Acoustic Card for Forums & Social Media

Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.

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