Multiple Powered Subwoofers
Take one already-processed subwoofer feed and distribute it to several powered subs, with a dedicated front-panel level control for every feed.
What Do You Actually Use It For?
BoomDookie sits between one line-level bass source and the equipment that drives your subwoofers. Feed it from a DSP, crossover, mixer, preamp, or processor; it gives you eight separately controlled mono RCA feeds for downstream amplifier inputs or powered subwoofers.
One Bass Feed
DSP · crossover · mixer · preamp · processor
BoomDookie
Filter or bypass · eight front-panel level controls · supervised muting
Up To Eight Feeds
Power-amplifier inputs · powered-subwoofer inputs · test chains
One Processor, More Amp Channels
Send one line-level output from a DSP, crossover, mixer, or AV processor to multiple subwoofer-amplifier inputs without building a tree of Y-cables or daisy chains.
Bass Arrays And Distributed Zones
Deliver the same bass program to several amplifier channels or locations while trimming each feed at the rack. Downstream gear can still handle zone-specific delay, EQ, and limiting.
Bench Setup And Comparison
Present the same source to several amps, powered subs, or processing chains for setup, matching, comparison, and documented prototype testing.
Important: BoomDookie is a line-level signal distributor—not a power amplifier. It does not connect directly to passive speakers and it does not make speaker power. The first five units are prototypes; these are intended routing uses, not published performance claims.
What It Is
BoomDookie is a modular bass and subwoofer signal-distribution platform. The core hardware is BD-CORE — an eight-channel mono, line-level distribution board that takes a single RCA input and fans it out to eight independent, protected RCA outputs.
This eight-channel, internally powered 2U unit is the machine we are making now. The first run is planned as five CH2-10 prototypes for assembly, audio testing, thermal validation, and real-world use.
1Dedicated input
8Mono outputs
6Copper layers
5First builds
Core engineering features
Eight Mono Outputs
J1–J8 are eight independent mono coaxial outs. One RCA per channel — never stereo pairs. J9 is the separate line-level input.
Speaker-Safe Filter
A selectable fourth-order Butterworth low-pass with a nominal 300 Hz corner. FILTER is the default; SW1 selects FILTER or BYPASS.
Composite Drivers
Eight repeated channels on OPA1655 + BUF634A composite output drivers, each with 100 Ω cable isolation and low-capacitance ESD protection.
Supervised Power
Both analog rails must be healthy before the output-relay supply is enabled. Power loss fails muted; filter changes force a short all-channel mute.
Dedicated Control Headers
Every channel has separate headers for remote level control and its illuminated switch, keeping all eight front-panel controls modular and serviceable.
Chassis-Aware ESD
All nine cable-facing protectors drain to a dedicated chassis bus and single plated bond point instead of dumping the first transient into audio ground.
Resettable Rail Protection
F1 and F2 protect the analog supply rails with fitted 0.75 A hold, 24 V Littelfuse PPTCs that reset after the fault is removed.
Protected Fan Auxiliary
Revision E adds J30, a protected and filtered two-pin 12 V auxiliary output that powers the enclosure fan directly from BD-CORE.
Current Development Render
1080p · 60 fps · 1:42
Watch BoomDookie Come Together
This current Revision E visualization brings the enclosure, core board, selected controls, connectors, power hardware, and assembly sequence into one continuous feature tour.
This is a development render—not the final production film or a photograph of a completed unit. It documents the work so far and will be replaced as the model, wiring, artwork, and animation are refined.
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See The Signal Move
One blue line-level input enters BD-CORE, passes through the selectable low-pass path, and becomes eight independently controlled mono feeds.
One Blue Input
Single line-level coaxial source
Filter / Bypass
Internal fourth-order 300 Hz low-pass selection
8
Independent Channels
Separate level, illuminated control, relay mute, and mono output
The Core Board
This is not concept art. These renders come directly from the current Revision E KiCad board—the same six-layer design prepared for the first five units. Select any view to inspect the components up close.
Revision E · Current Baseline
Rail Protection Visible. Fan Power On-Core.
Revision E supersedes Revision D for the first five fabrication and assembly work. The updated renders now show the fitted Littelfuse 1812L075/24DR resettable protectors at F1 and F2, and the board adds J30 as a protected, filtered two-pin 12 V fan auxiliary output.
- F1 and F2: 0.75 A hold / 24 V Littelfuse PPTCs, now represented by their fitted 3D models
- J30: two-pin +12V_FAN / GND header on the core
- TP1–TP10: ten labeled board-level test points carried into the current assembly model for bring-up and troubleshooting
- Eight-channel audio path, 300 Hz filter values, mute behavior, board outline, and six-layer stack remain unchanged
Inside The Build
Not a parts-bin fantasy. These are the selected controls, connectors, and power hardware going into the first five BoomDookie units.
01 / POWER
MEAN WELL PD-2515
A compact open-frame dual-rail supply selected specifically for BD-CORE's analog power requirements.
24 W · +15 V / −15 V · 0.8 A per rail Verified datasheet
02 / SIGNAL I/O
The One Blue Jack
A single blue D-series RCA input sits among eight green isolated NF2D-5 mono outputs.
NF2D-5 output drawing
03 / LEVEL
Eight Hands-On Channels
Each output gets a 10 kΩ audio-taper potentiometer beneath a green anodized-aluminum knob with a clear white index line.
Potentiometer datasheet Knob drawing
04 / SWITCH
Push. See. Know.
One alternate-action, green-illuminated button per channel operates and identifies its fail-muted output.
PB5L · IP67 Verified datasheet
05 / SEAL
Color In The Details
Eight green SCDP-FX-5 gaskets and one blue SCDP-FX-6 input gasket sit between the rear panel and the black NF2D housings, sealing and color-coding the nine RCA positions.
8 × SCDP-FX-5 · 1 × SCDP-FX-6
06 / MAINS
One Guarded Point Of Entry
The fused, switched Adam Tech C14 inlet mounts in a bonded 1.0 mm adapter plate because the CH2-10's 3.175 mm rear panel is too thick for the inlet's snap-in body. Inside the rack, the mains zone and open-frame supply receive a dedicated finger-safe guard.
IEC-GS-1-100 · fused · switched Verified datasheetReference images show selected prototype parts. Original BoomDookie build photography will replace catalog imagery as assembly begins; the selected 2U enclosure appears below.
The Chassis
- Redco CH2-10 geometry: 19 × 3.5 × 0.125 in front panel, 17 × 3.5 × 0.125 in rear panel, two identical flipped 0.062 in shell halves, a 10 in shell, and 10.25 in assembled depth
- Black enclosure: powder-coated shell and panels with registered green channel graphics, a blue centre-input driver, the split BOOM / radiation / DOOKIE mark, and the bomb-and-cloud artwork at the right
- Front: eight channels—each an alternate-action illuminated pushbutton over a green anodized-aluminum level knob. SW1 (FILTER / BYPASS) remains internal.
- Rear: Adam Tech IEC-GS-1-100 on the left, a 60 mm Noctua NF-A6x25 exhaust position, then nine black Neutrik D-series housings. Eight outputs use gold RCA connectors with green SCDP-FX-5 gaskets; the one input uses a gold RCA connector with a blue SCDP-FX-6 gasket. Each gasket is sandwiched between the rear panel and its NF2D housing.
- Enclosure fasteners: sixteen internal front/rear shell flanges plus four side joints are specified as M3 tapped and use twenty green anodized M3 × 8 mm knurled thumb screws; the sixteen corresponding shell-attachment holes in the front and rear panels are countersunk
- Connector and foot holes: the eighteen diagonal NF2D mounting holes are M3 × 0.5 tapped from 2.50 mm pilots for green anodized DIN 7991 M3 × 6 mm 90-degree countersunk screws; the four Penn Elcom F1693 foot holes are M5.5 tapped, with each screw entering from below through the foot and its embedded steel washer
- Core-board mounting: eight 10 mm M3 female-to-female brass standoffs use green anodized ISO 7380 M3 × 6 mm button-head screws above and below. Black 10 mm tapered aluminum finishing cups are being sampled for the underside only; J29 retains separate conductive chassis-bond hardware.
- Plain through-holes: the fan/guard mounting and IEC adapter-rivet holes are not threaded. The green anodized IEC adapter uses four corner pop rivets through the rear panel; a stylized green anodized fan guard is planned.
System Anatomy
Open the callouts to follow the physical build from its single blue input to the protected analog core and eight green outputs.
01 · One Blue Input
The centered, visually distinct coaxial input is the only program feed entering the system.
02 · BD-CORE Revision E
The six-layer analog board handles filtering, eight repeated output channels, muting, protection, dedicated control headers, and the protected J30 fan auxiliary output.
03 · Eight Front Controls
Every output receives its own level potentiometer and illuminated alternate-action control.
04 · Eight Green Outputs
Eight independent mono RCA feeds leave through isolated D-series output connectors—one connector per channel.
05 · Guarded Power Zone
The fused and switched IEC entry, open-frame dual-rail supply, bonded chassis, and internal guard form the mains side of the build.
06 · Serviceable Mechanical Build
The core board and Mean Well supply mount on standoffs; TP1–TP10 remain available for bring-up, and the exact fan, feet, controls, connectors, and removable enclosure fasteners are represented in the assembly model.
Inside The Harness
The internal harness is being laid out as part of the mechanical assembly model so the first prototype can be wired cleanly, serviced channel by channel, and photographed honestly.
RCA Signal Pairs
Each rear RCA connection is planned as a twisted green signal conductor and black ground conductor from its JST header to the soldered jack connection.
Three-Wire Level Controls
All three conductors for each P160KNP potentiometer are planned as one twisted bundle, keeping the eight front-panel level-control harnesses orderly and easy to trace.
Four-Pin Switch Headers
Each illuminated pushbutton's four-pin JST harness separates into two twisted pairs: one pair for the switch contacts and one pair for the green LED.
Power Wiring
Red and black power conductors route through the Molex connection to the Mean Well PD-2515, kept apart from the low-level signal bundles wherever the enclosure allows.
Harness colors and routing are the current assembly plan. Final pin order, wire gauge, lengths, strain relief, tie-down locations, and mains clearances will be checked against the physical first unit before the plan is treated as production documentation.
Road To The First Five
Revision E is the current fabrication and assembly baseline. This log separates completed design work from the proof still owed by assembled hardware. Last updated .
Revision E Design Baseline
Revision E supersedes Revision D with the protected, filtered J30 fan auxiliary output. The eight-channel signal path and mechanical baseline remain unchanged, and the updated fabrication and assembly package is prepared.
Mechanical, Artwork, And Harness Baseline
The dimensioned CH2-10 assembly model now includes the exact board, Mean Well supply, Noctua fan, controls, NF2D/SCDP rear connectors, IEC adapter, feet, standoffs, fasteners, final registered panel and lid artwork, and the planned twisted-pair harness routes.
Bring-Up And Channel Check
Power-rail verification, supervised mute behavior, control wiring, and all eight signal paths will be checked before full enclosure integration.
Bench Data And Real-World Use
Frequency response, noise, crosstalk, mute timing, thermal behavior, and finished-build photography will be published here as measured—not predicted. The oscilloscope, multimeters, supporting bench gear, wiring, and test setup will be photographed so readers can see how each result was obtained.
Validation Ledger
Schematic connectivity and electrical rulesDesign clean
PCB routing and physical design rulesDesign clean
CH2-10 dimensions, shell flanges, and hole/thread scheduleModel documented
Final front-panel and lid artwork registrationProof prepared
Power-up and relay-mute timingBench queued
Filter and bypass frequency responseBench queued
Eight-channel gain, noise, and crosstalkBench queued
Enclosed thermal and continuous-operation testBuild queued
F1/F2 rail protection continuity and voltage dropBench queued
J30 fan auxiliary voltage, ripple, and load behaviorBench queued
Current · Eight Channel
The full-width CH2-10 version is the priority and the only model this page is presenting in detail.
- Revision E is the current first-five fabrication and assembly baseline
- KiCad 10 schematic and six-layer PCB complete
- ERC passes with no errors or warnings
- DRC passes with no violations or unconnected pads
- F1/F2 fitted Littelfuse protection models are now represented in the board renders
- Protected and filtered J30 fan auxiliary header added on BD-CORE
- Exact manufacturer CAD integrated for the controls, rear connectors, IEC inlet, Noctua fan, Mean Well supply, and Penn Elcom feet
- Final front-panel artwork, lid signal map, hole/thread schedule, and internal harness plan documented
- Five prototype builds planned
- Bench, mute-timing, audio, thermal, and enclosure validation next
Next · Four Channel
After the eight-channel units are proven, the next direction is a four-channel version in a smaller enclosure with an external power supply. Details stay open until the current build earns them.
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