Proline X PO 10-S W CLUB sealed wedge, front baffle with gloss black insert and pre-wired leads, 24.4 by 13 inches.

Proline X

Performance Optimized Wedge Sealed 10" Enclosure | JBL Club 102SL

Q: Does this fit the JBL Club 102SL at either impedance setting, and will any other 10 inch fit?

The Club 102SL, yes, at either switch position: the SSI switch changes only the electrical load, not the frame. The baffle is cut to JBL's 9.00 in (228.6 mm) cutout, and the 10.52 in (267.3 mm) frame covers it with margin. The 3.25 inch motor clears the cabinet with 0.75 inch to spare.Any other 10, no. The airspace is chosen around the Club 102SL's 1.097 Qts and 24.4 liters of Vas at 4 ohms, and a different woofer that happened to drop into the hole would not see the alignment printed on this page.

Q: What amplifier power should I run, and how should I wire it?

JBL rates the Club 102SL at 350 watts RMS and 1050 watts peak, so target 244 to 350 watts RMS at the final load.The Club 102SL has one voice coil and JBL's Selectable Smart Impedance (SSI) switch, which sets it to 2 or 4 ohms without rewiring. The 4 ohm setting is the tighter alignment in this box; 2 ohms draws more power from a 2 ohm stable mono amplifier. Turn the amplifier off before switching. Confirm your amplifier's minimum stable impedance first.

Q: Why the wedge angle, and why rear-firing into the trunk?

The seat-side face carries a 20 degree rake that matches the lean of a factory rear seat back, so the cabinet sits flush against it and the cargo space in front stays usable. The baffle is the vertical trunk-lid-side face, so the driver fires rearward into the trunk cavity.The trunk acts as an acoustic extension for the sealed box, and the cabin adds real output below 50 Hz, so in-vehicle response runs deeper than the anechoic 37.4 Hz on this page.

Q: Why is the front baffle double-layered?

The baffle is two bonded 3/4 inch sheets, 1.5 inches through. A single 3/4 inch panel flexes under the pressure a sealed box builds at 350 watts, which smears output and works the driver loose over time.The outer layer is machined as a flush recess to JBL's 10.52 inch frame, so the driver bolts to the inner layer and sits flush with the gloss black acrylic insert.

Q: What is the expected low-frequency extension?

Anechoic F3 is 37.4 Hz at the 4 ohm setting, with system resonance at 54.6 Hz. Above Qtc 0.707 a sealed box peaks before it rolls off: this one rises about 5 dB near 60 Hz and is back at its reference level around 42 Hz, so the F3 sits below the resonance rather than at it.Those figures exclude cabin gain. In a car the cabin's transfer function adds real output below 50 Hz, so in-vehicle response runs deeper than the numbers above.

Q: Do I need to add polyfill or damping?

No. Polyfill is already installed as a light wall lining to control internal reflections, and the quantity is chosen so it does not change the acoustic volume.Do not add more. Packing a sealed box with fill makes it behave as though it were larger, which walks the alignment away from the 0.60 cubic feet this cabinet was built to.

Q: Is the driver included, and are the threaded inserts installed?

No driver. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, one side-mounted pre-wired terminal cup, the polyfill lining already in place, and a threaded insert kit with stainless machine screws.The inserts ship loose on purpose: JBL prints no bolt circle for the Club 102SL, so you set the driver in the recess, mark its holes, drill and press the inserts. We sell the JBL Club 102SL separately.

SKU: PO 10-S W CLUB BB

QUICK SPECS

Best For: JBL Club 102SL Trunk-Fit Builds
Net Volume: 0.60 cu ft (0.65 cu ft Gross)
Driver Match: JBL Club 102SL (SSI 2 or 4 ohm)
Construction: Rear-Firing Wedge | V-Groove/Dado | Double 1.5" Baffle | Threaded Insert Kit

Shipping Included No freight charges at checkout. What you see is what you pay.

Built in Tennessee CNC cut from 3/4" Langboard Elite MDF. V-groove and dado joinery.

Advanced Terminal Cup Built in-house. ABS/Carbon Fiber. Stainless steel hardware. Copper ring terminals.

$ 269.99

Acrylic Insert Color

In Stock and Ready to Ship

Financing available. Choose Shop Pay Installments at checkout.

Performance Optimized Wedge Sealed 10" Enclosure | JBL Club 102SL

Enclosure Type Sealed

External Dimensions 24.38" W x 13" H x 9.82" D at base tapering to 5.09" D at top

Gross Volume 0.65 cu ft

Net Volume 0.60 cu ft

Shipping Weight 34 lbs

Front Panel Thickness 1.5"

INSTALLER'S TAKE

Know what you are buying: the Club 102SL is a high-Q shallow 10, and no sealed box flattens it. At 0.60 cubic feet it reads Qtc 1.71 on the 4 ohm setting, a punchy bump near 60 Hz. That suits rock, rap and anything that lives in the upper bass; it is not a deep, flat SQ box.

Use the 4 ohm switch position unless you need the 2 ohm load; it is the tighter of the two in this box (Qtc 1.71 against 1.88).

The 3.25 inch motor is why this wedge can be so thin: 5.09 at the top, 9.82 at the base, and still clears the magnet.

Inserts ship in the kit, not pressed: JBL prints no bolt circle. Mark from the driver, drill, press.

Product Details

Performance Optimized Wedge | JBL Club 102SL

10" Sealed Wedge Enclosure | Rear-Firing Trunk-Load Design

0.60 ft3 Net0.65 ft3 GrossQtc 1.71Single Chamber Wedge24.38" x 13" x 5.09/9.82"Built in Tennessee

The JBL Club 102SL in a Sealed Wedge

The Club 102SL is JBL's shallow-mount 10 inch: an aluminum cone on a rubber surround, a 2 inch voice coil, 350 watts RMS and 1050 watts peak, and just 3.25 inches of mounting depth on a 10.52 inch frame. Its shallow motor lets the wedge stay thin: the cavity is only 5.09 inches deep at the top. See the JBL Club 102SL for the driver itself. Every figure comes from JBL's own Club 102SL owner's manual, which prints a separate parameter set for each position of the impedance switch. This cabinet is designed on the 4 ohm set; at 2 ohms the same box reads Qtc 1.88.

0.60 cubic feet net. The Club 102SL is a high-Q woofer, Qts 1.10 at 4 ohms, and a sealed box can only raise system Q, never lower it below the driver's own. No sealed box of any size reaches the 0.707 of a flat alignment, so 0.60 cubic feet is chosen for the space: a little above JBL's own 0.53 cubic foot recommendation (Qtc 1.78) and inside its 0.42 to 0.69 range. At Qtc 1.71 the response rises about 5 dB to a peak near 60 Hz, returns to its reference level around 42 Hz and is 3 dB down at 37.4 Hz. Expect full, punchy upper bass rather than flat, deep extension.

Trunk-Load Wedge Design Explained

The driver mounts on the vertical trunk-lid-side face and fires rearward into the trunk cavity.

Seat-Side Face Matches Seat Lean

Angled face matches the roughly 20 degree factory seat lean.

Trunk-Lid-Side Face Fires the Woofer

Vertical baffle, cone firing rearward into the trunk cavity.

Trunk Cavity Loading

The trunk acts as an acoustic extension for a smoother presentation.

Preserves Trunk Cargo Space

The wedge tucks against the seat back and the space in front stays usable.

Engineered for the JBL Club 102SL

At Qtc 1.71 the response rises about 5 dB to a peak near 60 Hz, returns to its reference level around 42 Hz and is 3 dB down at 37.4 Hz. Expect full, punchy upper bass rather than flat, deep extension. JBL publishes the cone area, 346 square centimeters. JBL publishes no driver displacement; an estimated 0.04 cubic feet is taken out of the net figure.

Alignment Numbers

SSI Setting	System Qtc	fc	F3	Peak
4 ohm (design basis)	Qtc 1.712	54.6 Hz	37.4 Hz	+5.1 dB
2 ohm	Qtc 1.880	55.9 Hz	37.9 Hz	+5.8 dB

Mounting Geometry

The baffle is cut to JBL's 9.00 in (228.6 mm) cutout, and the 10.52 in (267.3 mm) frame covers it with margin. The rear panel rakes 20 degrees, so the cavity deepens from 5.09 in at the top to 9.82 in at the base, and the 3.25 in motor clears it with 0.75 in to spare. JBL prints no bolt circle for the Club 102SL, so the baffle ships undrilled with a threaded insert kit and stainless machine screws: set the driver in the recess, mark its holes, drill, press the inserts and bolt it down.

What the Numbers Rest On

Langboard Elite MDF

Premium 3/4 in MDF throughout.

V-Groove and Dado Joinery

CNC cut V-grooves at every panel intersection, sides and brace seated in dados.

Double-Layer 1.5" Front Baffle

Two bonded 3/4 in MDF sheets at the driver face, the outer layer machined as a flush recess.

JBL's Own Manual

At the 4 ohm setting: Fs 35 Hz, Qts 1.097, Qes 1.329, Qms 6.263, Vas 24.4 L, Sd 346 cm2, Mms 144 g, Bl 10.37 T-m, Re 4.52 ohm, Xmax 6 mm. Sensitivity 81 dB at 1 W / 1 m.

Wiring the JBL Club 102SL to Your Amplifier

The Club 102SL has one voice coil and JBL's Selectable Smart Impedance (SSI) switch, which sets it to 2 or 4 ohms without rewiring. The 4 ohm setting is the tighter alignment in this box; 2 ohms draws more power from a 2 ohm stable mono amplifier. Turn the amplifier off before switching. Confirm the final load against your amplifier's minimum stable impedance before powering the system.

Power handling is 350 watts RMS per driver. Aim for roughly 244 to 350 watts at the impedance you wire.

Built in Tennessee, Backed by Audio Intensity

Cut and assembled in Tullahoma, Tennessee on our own CNC equipment. Finished in plush black carpet with the gloss black acrylic baffle insert, one pre-wired terminal cup, 12 gauge OFC to the driver position. Polyfill wall lining installed. Threaded insert kit and stainless machine screws in the box. 1 year limited warranty on the enclosure. Enclosure only, the driver is sold separately. Call or text 931-563-5151.

JBL Club 102SL: A Thin Sealed Wedge for a Shallow 10

0.60 cubic feet net at Qtc 1.71, cut direct fit and built to order in Tennessee.

Specifications

Specification	Value
Series	Proline X Performance Optimized Wedge
Compatible Driver	JBL Club 102SL, quantity 1. Direct fit
Configuration	Single 10 inch, single chamber sealed wedge
Mounting Position	Trunk or cargo area, tall face against the rear seat back
Firing Direction	Rearward into the trunk. Not a down fire design, no feet included
External Width	24.38 in
External Height	13 in at the seat face
External Depth	9.82 in at the base, tapering to 5.09 in at the top
Internal Volume, Gross	0.65 cu ft
Internal Volume, Net Acoustic	0.60 cu ft after the brace and an estimated 0.04 cu ft driver displacement
Driver Mounting Depth	3.25 in required; 0.75 in clearance above the motor against the raked rear panel
Alignment, SSI 4 ohm	Qtc 1.712, fc 54.6 Hz, F3 37.4 Hz anechoic, peak +5.1 dB near 60 Hz
Alignment, SSI 2 ohm	Qtc 1.880, fc 55.9 Hz, F3 37.9 Hz anechoic, peak +5.8 dB
Volume Basis	0.60 cu ft per driver, inside JBL's 0.42 to 0.69 sealed range (JBL recommends 0.53). No sealed volume reaches Qtc 0.707 with this driver
Woofer Opening	9.00 in (228.6 mm), JBL spec
Frame Outer Diameter	10.52 in (267.3 mm), JBL spec
Bolt Circle	Not printed by JBL; threaded insert kit included
Driver Displacement	Not published by JBL; 0.04 cu ft estimated
Fs / Qts / Qes / Qms (4 ohm)	35 Hz / 1.097 / 1.329 / 6.263
Fs / Qts / Qes / Qms (2 ohm)	36.2 Hz / 1.218 / 1.401 / 9.325
Vas / Mms / Bl (4 ohm)	24.4 L / 144 g / 10.37 T-m
Driver Sd	346 cm2, JBL spec
Xmax	6 mm, JBL spec
Driver Sensitivity	81 dB at 1 W / 1 m, JBL manual
Driver Power Handling	350 W RMS / 1050 W peak
Impedance	Single voice coil, SSI switch-selectable 2 or 4 ohm
Parameter Source	JBL Club 102SL / 122SL owner's manual
Material	Langboard Elite MDF
Construction	CNC cut, V-groove and dado joinery
Panel Thickness	0.75 in
Front Baffle	1.5 in double baffle, outer layer machined as a flush recess
Internal Bracing	Windowed brace, dadoed to the shell
Driver Mounting	Threaded insert kit included, NOT pre-installed: JBL prints no bolt circle
Terminal Cups	One Proline X ABS and carbon fiber composite, side mounted, pre wired 12 gauge OFC
Acrylic Insert	Gloss black acrylic baffle insert standard; None variant minus $20
Damping	Light polyfill wall lining, does not alter acoustic volume
Carpet	Plush black
Shipping Weight	34 lb
Warranty	1 Year Limited, enclosure
Built In	Tullahoma, Tennessee

Performance Graphs

Net airspace

0.60

cu ft

System Qtc

1.71–1.88

sealed

Half power

37.4–37.9

Hz · F3

Xmax at

W RMS · no filter

With 25 Hz subsonic

W RMS · +0%

Amplifier

350

W RMS recommended

This enclosure holds 0.60 cu ft net . In it the JBL Club 102SL runs a system Qtc of 1.71–1.88 with half power at 37.4–37.9 Hz, and the cone reaches its 6.0 mm travel limit at 62 W, below the driver’s 350 W thermal rating, so travel is what stops you here, not heat. A 25 Hz subsonic filter adds little here: 63 W against 62 W, 0 percent. The box already resonates at 55–56 Hz, so its own rolloff has removed most of what the filter would have stopped.

01Is it a sealed driver?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 25.8–26.3

SSI switch at 4 ohm · EBP 26.3SSI switch at 2 ohm · EBP 25.8

EBP under 50 means a motor that wants a sealed load. The Club 102SL sits at 25.8–26.3, inside that band, which is why this is a sealed build rather than a ported one.

02What the box does to it

0.60 cu ft against a 24.4 L Vas.

α = Vas ÷ Vb = 1.44 · Fc = Fs√(α+1) = 55–56 Hz · Qtc = 1.71–1.88

SSI switch at 4 ohm · Qtc 1.71, Fc 55 Hz, F3 37.4 HzSSI switch at 2 ohm · Qtc 1.88, Fc 56 Hz, F3 37.9 Hz

The box lifts resonance from 35.0–36.2 Hz free-air to 55–56 Hz and half power lands at 37.4–37.9 Hz, anechoic, before any cabin gain. Figures are JBL’s own Club 102SL owner’s manual, which prints a separate parameter set for each position of the impedance switch. With a Qts of 1.10 at 4 ohms and 1.22 at 2 ohms this is a high-Q woofer: no sealed box of any size brings it down to Qtc 0.707, so 0.60 cubic feet is a volume chosen for the space, and the response carries a peak of about 5 dB near 60 Hz rather than a flat rolloff. The 4 ohm setting is the tighter of the two. The dual wedge and both down fires hold the same 0.60 cubic feet per driver, so these curves describe them too.

03The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 6.0 mm, and in this alignment a subsonic filter barely moves it.

P_Xmax = 62–68 W unfiltered → 63–69 W with a 25 Hz subsonic

SSI switch at 4 ohm · 68 W, no filterSSI switch at 2 ohm · 62 W, no filterSSI switch at 4 ohm · 69 W with subsonic at 25 Hz, 24 dB/octSSI switch at 2 ohm · 63 W with subsonic at 25 Hz, 24 dB/octXmax 6.0 mm one-way

Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 6.0 mm. Unfiltered that is 62 W, reached first at 52 Hz. It sits under the 350 W the driver can take thermally, so the enclosure sets the ceiling, not the voice coil. The dashed traces are the same driver behind a subsonic filter at 25 Hz, 24 dB/oct, and they sit almost on top of the solid ones: 63 W against 62 W. At 55–56 Hz the filter sits well below resonance, where the sealed alignment has already rolled the cone off at 12 dB/oct, so there is little wasted travel left for it to recover. Set it anyway to keep road rumble out of the cone, but do not size the amplifier around it.

Param	Value	Unit	Note
Fs	35.00 / 36.20	Hz	free-air resonance
Qts	1.097 / 1.218		SSI switch at 4 ohm / SSI switch at 2 ohm
Vas	24.38 / 23.49	L	equivalent compliance
Sd	346.4	cm²	effective piston area
Xmax	6	mm	one-way linear travel
Pe	350	W	continuous RMS
SPL	80.8	dB	1 W / 1 m, derived from T/S

Driver parameters as published by JBL Club 102SL owner's manual. Curves computed against this enclosure’s actual net airspace.

Materials

Material

Built From a Spec Sheet, Not a Sales Sheet

Every Proline X Performance Series enclosure is CNC-cut from Langboard Elite MDF, 3/4" (18mm) panels produced to published mill specifications. Most enclosure manufacturers source generic MDF without published data. We can tell you the internal bond rating, the modulus of elasticity, the modulus of rupture, and the face and edge screw holding strength for every panel in this enclosure, because we chose the material based on those numbers, not on price or availability.

Langboard Elite is produced in the United States. The specifications below are pulled directly from Langboard's published mill data and are verifiable. This is the same panel stock used in our full Proline X lineup.

Specifications

Langboard Elite MDF: Published Mill Data

Property	Value	Why It Matters
Panel Stock	Langboard Elite MDF	Named, verifiable panel source, not generic "high-density MDF"
Thickness	3/4" (18mm)	Industry standard for subwoofer enclosures; panels below this flex under pressure
Density	48.5 lbs/ft³	Higher density = less porosity, better screw retention, reduced resonance
Internal Bond	200 psi	Measures resistance to delamination under sustained internal pressure. The most enclosure-relevant spec on this sheet
Modulus of Rupture (MOR)	4,200 psi	Bending strength before the panel breaks, relevant for larger unsupported baffle spans
Modulus of Elasticity (MOE)	410,000 psi	Stiffness under load; higher MOE means less panel flex under bass pressure, less resonance
Face Screw Holding	325 lbs	How firmly the panel surface holds a screw; critical for baffle joint integrity over time
Edge Screw Holding	250 lbs	Panel edge retention, relevant for every joint that isn't face-to-face

Internal Bond

200 psi: The Number That Actually Matters for Enclosures

The internal bond rating measures how well the MDF panel resists delamination under sustained pressure applied perpendicular to the face. In a subwoofer enclosure, every bass transient generates a pressure pulse that pushes outward on every panel simultaneously. A panel that begins to delaminate internally loses stiffness gradually. The symptoms are slow: a box that starts to sound softer, less defined, less punchy over months of use. 200 psi internal bond is the spec that determines how long this enclosure holds its acoustic integrity under daily use at real power levels.

Stiffness

410,000 psi MOE: Less Flex, Less Resonance

The modulus of elasticity measures panel stiffness, its resistance to bending under load. A stiffer panel flexes less under the pressure generated by a high-excursion driver at volume. Panel flex is a source of acoustic coloration: the panel itself begins to radiate sound at its own resonant frequency, adding distortion to the output. 410,000 psi stiffness combined with V-groove and dado joinery means the panels stay rigid and the bracing controls resonance at the structure level, not the panel level. The bass you hear comes from the driver, not the box.

Screw Holding

325 lb Face / 250 lb Edge: Joints That Stay Locked

Screw holding strength determines how firmly the panel grips a fastener at the face and at the edge. This matters most at the baffle joint, where the front panel meets the side panels and where the driver is mounted. A panel with low screw holding strength allows fasteners to loosen over time under vibration, leading to air gaps at the joint and loss of acoustic seal. 325 lb face screw holding strength means the baffle hardware stays put. Combined with dado joinery and adhesive, the front panel on a Proline X Performance Series enclosure is not going anywhere.

Sourcing

Named Panel Stock: Not "Premium MDF"

The phrase "premium MDF" or "high-density MDF" appears on marketing copy for enclosures across every price point, from $40 to $400. It is not a specification. It is a description with no defined standard. Langboard Elite is a named, sourced, mill-documented product with published data. We name it in our copy because naming it holds us accountable to the spec. You can look up Langboard Elite independently, verify the numbers on this page, and confirm you are getting what we say you are getting. That is the point.

Why Proline X?

Most enclosures are built to a price point. Proline X is built to a spec. Every box starts with published-data MDF, gets CNC-cut to exact internal volume, and is assembled by hand in our Tennessee facility. The difference shows up in the measurements, and in how the box holds up two years into daily use.

CNC-Cut to Spec

Panels are machine-cut on ShopSabre CNC routers and joined with V-groove and dado joinery. Consistent geometry, no hand-cut variance, no gaps at the joints.