NB Speaker Builder

Coming soon

Design a speaker box around the drivers in the store, see how it'll play before you cut any wood, and get everything you need to build it. Having NB Audio cut it is coming soon too. It's built for subwoofers first. It's free, there's nothing to sign up for, and it works on your phone.

Tell me when it's live

Hundreds of drivers, specs loaded

No datasheet hunting

Hundreds of drivers come into the builder with their figures already in, straight from the makers' datasheets and drawings. Pick a driver and start designing. You don't have to look anything up.

Hundredsof drivers, subs and woofers
Dozensof passive radiators
6brands
  • The full T/S set, Xmax, power and sensitivity
  • The frame's size, the cutout and the depth, so it knows what fits
  • The maker's bolt circle, hole sizes and flange, so the recess and the insert marks are drawn for you
  • Where a maker doesn't publish a figure, the builder estimates it or asks you, and marks it so you know to check

Dayton Audio, SB Acoustics, Scan-Speak, Peerless, SB Audience and Purifi.

Box simulation

Everything you'd open WinISD for, then it keeps going

  • Sealed, ported (a slot or a round port), passive radiator, 4th- and 6th-order bandpass, and isobaric pairs
  • Response, max SPL, cone excursion, port air speed, radiator excursion, impedance, group delay and amp power
  • Up to four designs on one graph, each in its own colour
  • Box losses (QL, QA and QP), subsonic and low-pass filters, EQ and the Linkwitz transform
  • Room gain for four sizes of room, or a car
  • Real amps from the store, wired for their lowest load, with suggested DSP settings
  • Checks that tell you when a port will chuff, the cone runs past Xmax or the walls may ring, most with a one-click fix
  • Your own driver too: load its WinISD file or type in the specs

It uses the standard model speaker designers use, checked against the textbook results and an independent second model.

Four graphs for one subwoofer in a sealed, a ported and a passive radiator box: cone excursion against Xmax, max SPL, impedance and group delay.
Four of the graphs, for one sub in three kinds of box.

Guide me

New to this? Answer seven questions

What it's for, the room, how deep, how loud, how big a box you'll live with, the amp and the budget. Then it suggests designs from the store: the best match, the best value and the smallest. One click loads one into the builder, ready to tweak.

Guide me, step 5 of 7: what's the largest box you'll accept, from about a bedside table to about a washing machine.

Build it

Then it plans the build

  • The box's sizes and shape, and a 3D view you can turn, zoom and see inside
  • A slot port built from the box's own panels, along the floor
  • Window braces: you choose how many run each way
  • The cut list, and a cut map on standard 2400 x 1200 sheets
  • Panel drawings with the driver holes and recesses, and marks for threaded inserts and the plate amp
  • A simple printable build plan
  • DXF and STEP files for your CNC

The example: a 15" SB Audience BIANCO-15SW400 in a 203 L ported box tuned to 33.5 Hz, on a Dayton SPA300-D plate amp, with two braces each way.

The example's cut map, sheet 1 of 2: the sides, front, back, slot port roof and shelf brace on a 1200 by 2400 mm sheet.
Its cut map, sheet 1 of 2.
The example box in 3D: the 15-inch driver on the front and the slot port's opening along the bottom.
The example box, to scale.
The same box seen inside: the slot port along the floor, two vertical and two horizontal braces, and the plate amp's backing box.
See inside: the slot along the floor, and two braces each way.

Parts

Every part, one click

The driver, the amp, the radiators and the build bits all come from the store, with their prices. Add the lot to your cart. Extras like wire, terminals and damping are there if you want them.

Coming soon: have NB Audio cut it.

It isn't open yet, and it may come after the launch.

Later on: 2 and 3-way speakers

Right now the builder is built around subwoofers. 2 and 3-way speakers are planned for the future.

Want to know when it's live?

Pop your email in and I'll let you know the day it launches.

Thanks, you're on the list. I'll email you when it's live.

You'll get the launch email and NB Audio's newsletter. One click to unsubscribe.

Got an idea for it, or a driver you'd like to see in it? Email sales@nbaudio.com.au.

Screenshots from an earlier build. It will look different at launch.