Performance Optimized · Datasheet

Performance Optimized Down Fire Sealed Dual 10" Enclosure | ResoNix GUS-10 Dual 10" Sealed enclosure

Net volume
0.60 cu ft per chamber, 1.20 cu ft total after displacement
Max mounting depth
101.5mm / 3.996 in, ResoNix spec
External dimensions
30 in W × 8.3125 in H × 15 in D
Front baffle
1.5 in double baffle at both driver positions, outer layer flush recess
Buy at Audio Intensity
  • Alignment: 0.60 cu ft net per chamber, 1.20 cu ft total, ResoNix's own D4 target. Qtc 0.688 / F3 39.5 Hz (D4), Qtc 0.603 / F3 43.4 Hz (D2)
  • Chambers: Two fully separate sealed chambers, 3/4 in MDF full divider, one shared side mounted terminal cup
  • Drivers: Pair of ResoNix GUS-10 D2 or D4, 500W RMS each, 1000W combined, 18mm Xmax, 3.996 in mounting depth
  • Standoffs: Included, ResoNix specifies 55mm minimum from baffle surface to the floor
  • Cabinet: 30 in W x 15 in D x 8.3125 in H in down fire position, excludes standoffs, square corners

Technical specifications

SeriesProline X Performance Optimized Down Fire
Compatible DriverResoNix GUS-10, Dual 2-Ohm or Dual 4-Ohm. Pair required, direct fit
Enclosure TypeSealed, dual driver, down fire, floor coupled
Chamber ConfigurationTwo fully separate chambers, full divider, single shared side mounted terminal cup
Firing DirectionDownward into the floor, both drivers. Endorsed by ResoNix. Standoffs included and required
External Width30 in
External Depth15 in
External Height8.3125 in, measured in down fire position, excludes standoffs
Dimension ReferenceAll external dimensions measured in down fire position, excludes standoffs
Internal Volume, Gross1.27 cu ft total
Internal Volume, Net Acoustic0.60 cu ft per chamber, 1.20 cu ft total after displacement
ResoNix Target For 0.707 Qtc0.6 cu ft (D4) / 0.4 cu ft (D2), per driver
System Qtc Per Chamber0.688 (D4) / 0.603 (D2)
Predicted F3 Per Driver39.5 Hz (D4) / 43.4 Hz (D2)
Driver Fs21.76 Hz (D4) / 20.37 Hz (D2)
Driver Qts0.39 (D4) / 0.34 (D2)
Driver Vas36.035 L (D4) / 36.634 L (D2), each
Driver Xmax18mm one way linear, Klippel verified
Driver Displacement0.031 cu ft each, published by ResoNix
Driver Power Handling500 W RMS each, 1000 W RMS combined. Do not exceed
Driver ConeNomex honeycomb core with carbon fiber facing
Driver Voice CoilCopper on titanium former
Driver MotorPatent pending FEA optimized overhung, full length copper shorting sleeve, copper and aluminum shorting rings
Voice Coil ConfigurationDual voice coil per driver, impedance set at the drivers
Rear VentingVented rear cone assembly. Pole vent may be fully obstructed, ResoNix spec
Mounting Depth101.5mm / 3.996 in, ResoNix spec
Woofer Opening235.08mm / 9.255 in, direct fit, each position
Min Front Clearance55mm from baffle surface, ResoNix spec
StandoffsCustom fit, included. Maintain the ResoNix required floor clearance
MaterialLangboard Elite 3/4 in MDF
ConstructionShopSabre CNC cut, dado and V groove joinery, perimeter cross brace
Panel Thickness0.75 in
Front Baffle1.5 in double baffle at both driver positions, outer layer flush recess
Chamber Divider3/4 in MDF, full bonded panel
Corner ProfileSquare, Down Fire series standard
Driver Mounting8/32 threaded inserts, stainless machine screws included, 2 sets
Terminal CupOne Proline X ABS and carbon fiber composite, side mounted
Internal Wiring12 gauge OFC, pre-wired in parallel to both driver positions
DampingPolyfill pre-installed per chamber
CarpetPlush Black
Weight38 lb
Warranty1 Year Limited, enclosure
Built InTullahoma, Tennessee

Performance in this enclosure

Net airspace
0.60
cu ft per chamber
System Qtc
0.60–0.69
sealed
Half power
39.5–43.4
Hz · F3
Xmax at
434
W RMS · no filter
With 25 Hz subsonic
722
W RMS · +67%
Amplifier
500
W RMS recommended
This enclosure holds 0.60 cu ft net per chamber. In it the ResoNix GUS-10 runs a system Qtc of 0.60–0.69 with half power at 39.5–43.4 Hz, and the cone reaches its 18.0 mm travel limit at 434 W, below the driver’s 500 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 722 W — +289 W, or 67 percent more power for the same 18.0 mm of travel.

01Is it a sealed driver?

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

EBP = Fs ÷ Qes = 54.4–59.9
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 D2 59.9 D4 54.4
D2 · EBP 59.9D4 · EBP 54.4
At 54.4–59.9 the GUS-10 sits in the transition band, not the sealed band. That is not a mismatch: a transition motor works in either alignment, and sealed buys a smaller box and a gentler roll-off at the cost of some low-end output. Stage 02 shows what this airspace actually does with it.

02What the box does to it

0.60 cu ft against a 36.6 L Vas.

α = Vas ÷ Vb = 2.16  ·  Fc = Fs√(α+1) = 36–38 Hz  ·  Qtc = 0.60–0.69
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
D2 · Qtc 0.60, Fc 36 Hz, F3 43.4 HzD4 · Qtc 0.69, Fc 38 Hz, F3 39.5 Hz
The box lifts resonance from 20.4 Hz free-air to 36–38 Hz and half power lands at 39.5–43.4 Hz, anechoic, before any cabin gain. This enclosure ships without a driver, so both coil variants the maker offers are plotted. They do not load the same box the same way.

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 18.0 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 434–452 W unfiltered  →  722–803 W with a 25 Hz subsonic
20 30 50 70 100 150 200 0 4 8 12 16 20 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 18.0 mm 434 W reaches Xmax here
D2 · 434 W, no filterD4 · 452 W, no filterD2 · 803 W with subsonic at 25 Hz, 24 dB/octD4 · 722 W with subsonic at 25 Hz, 24 dB/octXmax 18.0 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 18.0 mm. Unfiltered that is 434 W, reached first at 20 Hz. It sits under the 500 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: stopping the cone wasting travel below the passband lets it take 722 W before hitting the same 18.0 mm. That is 67 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs20.37Hzfree-air resonance
Qts0.340 / 0.390D2 / D4
Vas36.63 / 36.03Lequivalent compliance
Sd346.4cm²effective piston area
Xmax18mmone-way linear travel
Pe500Wcontinuous RMS
SPL81.4dB1 W / 1 m, derived from T/S

Driver parameters as published by resonixsoundsolutions.com. Curves computed against this enclosure’s actual net airspace.

Installer's take

Exactly 0.60 cubic feet net per chamber. Not approximately, not close enough. That is ResoNix's own published volume for 0.707 Qtc on the GUS-10 Dual 4-Ohm, and the cabinet was sized to hit it on the nose.

Each driver lands at Qtc 0.688 with F3 at 39.5 Hz on the D4. On the D2 it is 0.603 and 43.4 Hz, more damped than ResoNix's 0.4 target but a clean, tight alignment in its own right.

Separate chambers as always. Two drivers sharing one volume interact acoustically, each one's compression stroke becoming the pressure environment the other works against, which smears transients. A full-height bonded divider stops it. Each driver gets its own 0.60 and its own polyfill.

The GUS-10 is worth understanding before you buy. Patent pending FEA-optimized overhung motor, full length copper shorting sleeve sitting outside the gap with the coil between the former and the sleeve, titanium voice coil former to kill eddy current drag and route heat away from the neo magnet, Nomex honeycomb cone with carbon fiber facing. ResoNix publishes complete Klippel LSI and TRF data on every one and commits to doing it for every production batch. Across every driver family in this program, that transparency is unique.

Two build notes. The vented rear cone assembly means the pole vent can be fully blocked, so no clearance allowance is needed behind the motors. And ResoNix requires 55mm from the baffle surface to whatever sits in front of the cone, which on a down fire cabinet is the floor. Custom standoffs are included and they are not optional equipment.

500 watts RMS each, 1000 combined. ResoNix does not underrate these and overpower damage is not warranty work.

Questions

Why two separate chambers instead of one shared volume?

Because two drivers in a shared sealed volume interact acoustically. Each driver's compression phase becomes the pressure environment the other driver is working against, which smears transient response and blurs the alignment each would have on its own. A full-height bonded 3/4 inch MDF divider eliminates that completely.

Each GUS-10 gets exactly 0.60 cubic feet net, which is ResoNix's own published volume for a 0.707 Qtc alignment on the Dual 4-Ohm variant, plus its own polyfill. Separate chambers are the standing design rule on every Proline X dual sealed enclosure.

Why does this enclosure come with standoffs?

Because ResoNix specifies a minimum clearance in front of the cone, and on a down fire enclosure the thing in front of the cone is the floor. Their requirement for the GUS-10 is 23mm between the surround and the obstruction, or 55mm measured from the baffle surface.

This cabinet ships with custom-fit standoffs machined to hold that clearance at both driver positions. Setting a down fire GUS enclosure flat on the floor would restrict both drivers and compromise output and mechanical safety. The standoffs are a required part of the design, not an accessory.

How does this compare to the single 10 inch GUS enclosure?

Very close per driver, roughly 6 dB more maximum output. The single gives its driver 0.59 cubic feet net at Qtc 0.694 on the D4; each chamber here gives exactly 0.60 at Qtc 0.688. Effectively the same alignment, with this cabinet landing precisely on ResoNix's published figure.

The difference is physical. Both share the 30 by 15 inch footprint, but the single stands 5.125 inches tall and the dual stands 8.3125, before standoffs. Combined power handling doubles to 1000 watts RMS. The single suits tighter under-seat applications; the dual is a cargo floor or rear-wall build.

How is this enclosure wired, and how do I set my final impedance?

The enclosure uses one side-mounted Proline X terminal cup with a single pair of posts, pre-wired in 12 gauge OFC to both driver positions in parallel. You do not wire the two chambers separately at the amplifier.

Final impedance is set at the drivers. Each GUS-10 is dual voice coil, so you choose how to wire the two coils on each driver and that determines the load the amplifier sees through the cup. Use two of the same coil configuration and wire them identically, since mismatched wiring between chambers will split power unevenly. Confirm the resulting load against your amplifier's minimum stable impedance before powering the system.

Is down firing acceptable for a GUS subwoofer?

Yes, and ResoNix addresses it directly. Their published guidance is that there is very little real world difference in sound between down firing and up firing, and that you should choose whichever makes the installation easier, more reliable, and easier to service.

That endorsement comes from the driver's manufacturer rather than from us. The one requirement is maintaining their specified 55mm clearance in front of each cone, which the included standoffs handle.

How much power should I run to these subwoofers?

500 watts RMS per driver, 1000 watts combined, and not more. ResoNix is unusually direct about this: they state that the GUS series is not deliberately underrated the way many manufacturers rate their drivers, and that burnt voice coils or damage from bottoming out are not covered under warranty.

You can safely use an amplifier capable of more output so long as delivered power is limited to the rating. ResoNix also notes that because these drivers stay linear and low distortion right up to their limits, it will not always be obvious when you are pushing too hard.

How is this enclosure built?

V-groove and dado joinery, CNC-cut on ShopSabre routers from Langboard Elite MDF. Every panel joint is a machined interlocking groove that mechanically locks the panels before adhesive is applied, which keeps both chambers airtight under sustained pressure cycling. The chamber divider is a full-height bonded 3/4 inch panel.

Front baffles are double-layer at 1.5 inches at both driver positions, with the outer layer machined as a flush recess so each driver bolts to the inner layer. Perimeter cross-bracing and pre-installed polyfill in each chamber complete the build, and custom-fit standoffs are included to maintain ResoNix's required floor clearance. Assembled and inspected in Tullahoma, Tennessee.

Are the ResoNix GUS-10 subwoofers included with this enclosure?

No. This listing is for the enclosure only, and includes the custom-fit standoffs. ResoNix GUS-10 subwoofers must be purchased directly from ResoNix Sound Solutions. The cutouts and mounting depth are direct fit at both driver positions. Use two of the same coil configuration.

Other Performance Optimized models