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Proline X
Dayton Audio Reference RSS210HO Box: Ported 8" Professional Series Enclosure
SKU: Pro 8-P RSS210HO
QUICK SPECS
- Alignment: 0.90 cu ft net vented at 34.5 Hz. F3 29.8 Hz anechoic, 2.65 dB passband ripple
- Driver: Dayton Audio Reference RSS210HO, 300 W RMS, 11.0 mm Xmax, 29.60 Hz Fs
- Build: Front-firing standard box, 2.25" three-layer baffle with the woofer flush-mounted in the outer layer, Dayton Audio logo acrylic, dado joinery, 15.6 sq in front slot port beside the woofer with one bend along the back wall, port and excursion gated at 360 W
- Cabinet: 30.00" W x 14.00" H x 10.00" D, 46 lb, threaded inserts pressed into the baffle on the published 7.756 inch bolt circle
Shipping Included
No freight charges at checkout on US orders. International orders are quoted live carrier rates at checkout.
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.
$ 372.99
Financing available. Choose Shop Pay Installments at checkout.
Complete Your System
Dayton Audio Reference RSS210HO Box: Ported 8" Professional Series Enclosure
Regular price
$ 372.99
Sale price
$ 372.99
Regular price
Unit price
More enclosures cut for Dayton Audio subwoofers: Dayton Audio Subwoofer Boxes
Enclosure Type
Ported
External Dimensions
30.00" W x 14.00" H x 10.00" D
Net Volume
0.90 cu ft
Tuning Frequency
34.5 Hz
Port Area
15.6 Square Inches
Shipping Weight
52 lbs
INSTALLER'S TAKE
Product Details
Enclosure Specifications
Performance Graphs
Woofer Details
Materials
Proline X Professional 8" Ported
One Reference RSS210HO in a front-firing Professional box, vented at 34.5 Hz on a three-layer flush-mount baffle
0.90 cu ft net
Tuned 34.5 Hz
F3 29.8 Hz
2.25" three-layer baffle
Cut for the Reference RSS210HO
Built in Tennessee
0.90cu ft net
34.5Hz tuning
29.8Hz F3 anechoic
15.6sq in port area
Why this driver is vented at 34.5 Hz
The RSS210HO is the 8 inch from Dayton's Reference HO (high-output) line: 29.6 Hz, a Qts of 0.4, 18.7 litres of Vas and 11 mm of excursion, rated 300 W RMS. This cabinet gives it 0.90 cubic feet net behind a 2.25 inch three-layer baffle, vented at 34.5 Hz through a 15.6 square inch slot beside the woofer, for an anechoic F3 of 29.8 Hz in a 30 by 14 by 10 inch front-firing box.
Sealed, the RSS210HO is listed in our sealed wedge (PO 8-S W RSS210HO) at 0.31 cubic feet, Qtc 0.71, half power 52 Hz. The slot is gated at 360 W: the channel runs 18.6 m/s and the mouth 9.6, and the cone peaks at 9.1 of its 11 mm with the subsonic filter in place. Passband ripple is 2.6 dB. The RSS210HO-8 (single 8 ohm) was run through the same cabinet: F3 29.8 Hz, passband ripple 2.6 dB, 8.3 of its 12 mm at 300 W.
What makes it Professional
Three-layer baffle, flush mount
Three layers of 3/4 inch Langboard Elite make a 2.25 inch front. The outer layer is routed to the flange, so the woofer sits flush with the face; the two layers behind it carry the mounting hardware and the load.
Dayton Audio logo acrylic
A glossy black acrylic insert with the Dayton Audio mark sits in the outer layer beside the woofer. It is standard on every Professional cabinet.
Mounting
Threaded inserts pressed into the baffle on the published 7.756 inch bolt circle, stainless machine screws included.
Port gated at 360 W
The 15.6 square inch slot beside the woofer is sized so the channel runs 18.6 metres per second and the mouth 9.6 metres per second at 1.2 times the driver's rating, under the 17 metres per second where a slot starts to chuff. The channel runs 5.00 inches along its wall and turns once along the back wall for another 22.00 inches, which is why a 34.5 Hz tuning fits a 10.00 inch deep box.
Why this is a Professional build
The Reference RSS210HO also builds in the Performance Optimized ported wedge and ported down-fire, the smaller and cheaper boxes. The Professional cabinet is the step up for it: a 2.25 inch three-layer baffle with the woofer flush in the outer layer, and a slot port gated at 360 W.
What the price covers
Every Professional cabinet is priced the same way, by its size: this one is 2.43 cubic feet outside. Delivery to the 48 states is inside the price; it ships as a 46 lb parcel and checkout adds nothing. The Performance Optimized 8 inch ported wedge is $349.99. The $23 difference is the larger box and the port this driver needs to run at its rating.
The cabinet
30.00" W x 14.00" H x 10.00" D external. Two windowed braces run front to back either side of the woofer, clearing the cutout by two and a half inches. The box ships dry: polyfill detunes a ported alignment. Inside the Professional envelope for a single 8, 30 inches wide, 14 tall and 10 deep. 8.386 inch frame, flush in the outer baffle layer, 7.283 inch cutout, 4.96 inches of mounting depth. Dayton print the bolt circle, so the threaded inserts are pressed at the shop. It ships as a parcel.
Dayton publish a complete parameter table for the RSS210HO-4 that holds together on Qts, moving mass and motor strength. Mounting depth is the overall depth on Dayton's drawing, flange included, so it errs deep. Displacement is not published; 0.051 cubic feet is our estimate. Tuning includes a 1.5 Hz fold loss that is an estimate, not a bench measurement.
The numbers to respect
Set a 27 Hz subsonic filter, 24 dB per octave. Below tuning the vent stops loading the cone; with the filter in place the cone reaches 9.1 mm of its 11.0 mm at 360 W.
| Series | Proline X Professional |
| Driver-Specific Fitment | Dayton Audio Reference RSS210HO (RSS210HO-4 single 4 ohm or RSS210HO-8 single 8 ohm) |
| Enclosure Type | Ported | Front-Firing Standard Box |
| External Width | 30.00 Inches |
| External Height | 14.00 Inches |
| External Depth | 10.00 Inches |
| Internal Volume (Gross) | 1.39 Cubic Feet |
| Internal Volume (Net After Displacement) | 0.90 Cubic Feet |
| Port Type | Vertical Slot Beside The Woofer | Front Exit | One 90 Degree Bend Along The Back Wall |
| Port Geometry | 1.25 x 12.50 Inches, 15.6 Square Inches, 32.00 Inches Of Path |
| Port Area | 15.6 Square Inches |
| Port Tuning (Fb) | 34.5 Hz |
| Port Mouth | 1/2 In Roundover On All Four Edges, 30.4 Square Inches At The Face |
| Port Air Velocity | 18.6 m/s In The Channel, 9.6 m/s At The Mouth, At 360 W (17.0 m/s Chuff Threshold) |
| Design Power Basis | 360 W RMS (1.2 x The Driver Rating) For Port Velocity And Excursion |
| Predicted F3 | 29.8 Hz (Anechoic) |
| Passband Ripple | 2.65 dB (Anechoic) |
| Subsonic Filter | 27 Hz High-Pass, 24 dB/Octave - REQUIRED On A Vented Enclosure |
| Driver Fs | 29.60 Hz |
| Driver Qts | 0.400 |
| Driver Qes / Qms | 0.460 / 3.330 |
| Driver Vas | 18.700 Liters / 0.660 Cubic Feet |
| Driver Sd | 213.8 Square Centimeters |
| Driver Mms | 99.30 g |
| Driver BL | 12.00 |
| Driver Re | 3.6 Ohm |
| Driver Xmax | 11mm (One-Way) |
| Driver Displacement | 0.05 Cubic Feet (Published by Dayton Audio) |
| Driver Power Handling | 300 Watts RMS |
| Driver Overall Diameter | 8.386 Inches (Dayton Audio Spec) |
| Mounting Depth Required | 4.961 Inches (Dayton Audio Spec) |
| Cutout Diameter | 7.283 Inches (Dayton Audio Spec) |
| Flush Mount Recess | 9.375 Inches In The Outer Layer |
| Material | Langboard Elite 3/4" MDF |
| Construction | ShopSabre CNC / Two Windowed Braces Front To Back Either Side Of The Woofer |
| Joinery | Dado Joinery (CNC-Cut), Flat Panels |
| Front Baffle Construction | Three 3/4" MDF layers, 2.25" total | Woofer Flush-Mounted In The Outer Layer |
| Baffle Layers | 3 |
| Acrylic | Glossy Black Dayton Audio Logo Insert, Outer Layer, Standard |
| Mounting Hardware | Threaded Inserts On The Published 7.756 In Bolt Circle | Stainless Machine Screws Included |
| Voice Coil Configuration | Single 4 Ohm |
| Terminal Cup | Proline X ABS/Carbon Fiber Composite | Back Panel, Terminal-Cup Side | 12g OFC Pre-Wired |
| Damping | None - Ships Dry. Polyfill Detunes A Ported Enclosure |
| Recommended Power | 210-300 Watts RMS (Dayton Audio Rated: 300W RMS) |
| Carpet Finish | Plush Black |
| Shipping Weight | 52 lb |
| Shipping | UPS Ground Parcel, Included In The 48 States |
| Bundle Options | Enclosure Only (Bring Your Own Dayton Audio Reference RSS210HO) |
| Warranty | 2-Year Limited (Enclosure) |
| Manufactured | Tullahoma, Tennessee, USA |
Net airspace
0.90
cu ft
Tuning
34.5
Hz · Fb
Half power
29.8
Hz · F3, anechoic
Xmax at
522
W RMS · 27 Hz subsonic
With NO filter
107
W RMS · unfiltered
Port
9.6
m/s at the mouth · 360 W
01Is this driver right for a ported box?
Efficiency bandwidth product places the motor before anything else is decided.
EBP = Fs ÷ Qes = 64.3
Dayton Audio RSS210HO-4 · EBP 64.3
Between 50 and 100 a driver takes either load, and the choice becomes one of priorities rather than of physics. The Dayton Audio RSS210HO-4 reads 64.3. Ported buys output and low-end reach around tuning; sealed buys a shallower rolloff below it. This cabinet takes the first trade.
02What the box does to it
0.90 cu ft net against a 18.7 L Vas, vented at 34.5 Hz.
Fb = 34.5 Hz · F3 = 29.8 Hz · passband ripple 2.65 dB
Dayton Audio RSS210HO-4 · Fb 34.5 Hz, F3 29.8 Hz
Anechoic, before any cabin gain, with the 27 Hz subsonic filter already applied. The vent takes over below 34 Hz and the cone stops doing the work there, which is what holds travel down at the bottom of the passband.
03Ported vs Sealed
No sealed comparison is shown for this driver.
A ported-versus-sealed chart is only worth reading against a sealed box someone would actually build: the one we make for the driver, or the one its maker recommends. Neither exists for the Dayton Audio RSS210HO-4 — we do not build a sealed enclosure for it and Dayton publish no sealed volume for it — so rather than compare this cabinet against itself stuffed and sealed, a box no one would build, the comparison is left out.
04The 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 Dayton's published 11.0 mm. The two traces are the same cabinet with the subsonic filter switched on and switched off.
PXmax = 522 W with a 27 Hz subsonic · 107 W with none → the filter is worth 4.9×
522 W · subsonic at 27 Hz, 24 dB/oct107 W · no subsonic filterXmax 11.0 mm one-way, published
Each trace touches the limit and no further, because each is drawn at the exact power that puts the cone on 11.0 mm. With a 27 Hz subsonic that takes 522 W, reached first at 26 Hz. Take the filter away and the same cabinet reaches 11.0 mm on 107 W — the filter is worth 4.9× the safe power. A vent unloads the cone below tuning, so there is nothing holding it once the box stops loading: on a sealed build a subsonic filter is an improvement, here it is required equipment. The unfiltered trace is still rising where this chart stops at 20 Hz, so treat 107 W as a bound rather than a floor. Every wattage on this page is a MECHANICAL limit, not an electrical one. It is the power at which the cone runs out of linear travel in this cabinet, and nothing more. What the voice coil can dissipate as heat is a separate ceiling set by the driver, not by the box — Dayton rate this one at 300 W RMS, and that is the number that binds first here: heat stops you before travel does, so treat 300 W as the ceiling and the travel figures above as headroom. Final wired impedance, amplifier output and how long you hold the level are all electrical questions this graph does not answer.
Material
Built From a Spec Sheet, Not a Sales Sheet
Every Proline X Professional 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 Professional 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.
Handcrafted in USA
Hand-assembled at our facility in Tullahoma, TN. Every enclosure is inspected before it ships.
Tuned to the Build
Internal volume and port geometry are calculated to spec and CNC-cut to exact dimensions. The box performs the same way every time.
Shop By Series
Economy Series
Value Driven - Standard Output
Performance Series
High Output - Universal Ported & Sealed
Performance Optimized Series
Precision Tuned - Brand Specific Geometry
Performance Wedge Series
Angled Back - Truck & Hatchback Ready
Professional Series
Competition Grade - Double Baffle High SPL
Micro Series
Compact Sealed - Small Footprint Efficiency
Down Fire Series
Under Seat - Cargo Safe Down-Firing
Vehicle Specific Series
OEM Fitment - Stealth Truck & SUV Solutions
Loaded Series
Plug & Play - Subwoofer + Box Bundles
