I have shown Jaycar's designs which are single coil 2 ohm - car environment. Because the Jaycar Plate amps will only drive down to 4ohms, my design uses the two coils in series.

SPL

Jaycar large ported design in red - single 2ohm coil driven with 125w no boost

Jaycar small ported design in brown - single 2ohm coil driven with 125w no boost

My ported design in green - 4ohm series coils arrangement driven with 240w +6dB boost@35h

Cone excursion

Jaycars larger ported design runs into trouble below 25hz. I have added a 2nd red graph showing the addition of a hi-pass filter - 24dB/octave design freq. 18.5 hz.

Their small ported has trouble below 20hz

Port air velocity

Both Jacar's ported designs have air velocities that appear too large

I have added a 2nd red line showing their large ported / single 50mm port replaced by a pair of 86mm ports 1072 long. You would need to watch out for the 160hz port resonance if using this design

Port flares would be required - see the note at the bottom of this page

This driver appears to be Jaycar's replacement for the 10inch titanium. Whilst capable of similar output, the 2ohm double voice coil arrangement makes it power hungry for Home Theatre usage, requiring their 240w amp.

The driver seems to perform better as a single coil unit, providing you add a high pass filter.

To examine how to take advantage of this and still use the Jaycar Plate amps, here is a design using a pair of drivers in series to give the required 4 ohms

The following analysis takes my initial design and adds a second identical box. The drivers are now driven single coil, with the boxes in series, giving a total load of 4 ohms. To control excursion a high-pass filter with a design frequency of 12hz is added. The amplifier is the Jaycar 240w amp with the 6dB boost at 35hz

Here is my project file for WinISD Pro ver 0.50a7

You also could build this as a single 136 litre box with 4 * 86mm ports each 755mm long

My single. 240w. One driver, two series coils

SPL

The twin boxes have twice the cone area and twice the power, so to model in WinISD, plot a single box but with 4 times the power.

This is equivalent to a pair of boxes in series driven with Jaycar's 240w amp.

Cone excursion

The single coil unit has higher excursion. Bottom end runaway is controled with the high pass filter

Port air velocity

Single coil unit has higher air velocity, but at 13 m/sec should be OK provided port flares are used.

See note at the bottom of this page

If using this driver, I would aim for the twin design. If the budget is tight I would build a single unit, running the 240w amp into both coils in series. Later I would buy a 2nd driver, rewire for single coil operation, and build the high-pass filter and another box.