Subwoofersactive transmission line Series

A common misconception is that subwoofers are loud, boomy thump machines that simply make a lot of noise in dramatic movie action scenes, or shake your insides with the very loud beat emanating from the car next to you at the lights, or to add some boxy upper bass to a tiny tinny sounding mass market satellite system --nothing should be further from the truth.

A true subwoofer faithfully extends the music/sound on your CD, DVD, etc. to the frequency region below the reach of your normal speakers (or the crossover point set on your home theatre amplifier). It should simply continue the bass down, and down, without being too loud, too slow, too uneven in response, coloured or boomy. A good subwoofer is musical, accurate, has a fast response and is uncoloured; it enhances the realism of your music/movie, and your listening pleasure, and does not stand out like the throbbing of a sore thumb!

Here is a range of models that have been carefully designed with musicality and affordability in mind. The 1218, 1020 and 1220 are for small to medium systems; the 1230, 21040 and 1540 are for medium to large systems; All models are musical, accurate and controlled, and they perform beautifully and delicately at low volume levels as well.

Remember, the power of a subwoofer should be at least double the power of one channel of your main amplifier. For instance, the 1018, 1218 and 1220 subwoofers would suit amplifiers of 50 -- 100 wrms per channel; or a more powerful amplifier used only to levels less than 100 watts per channel. The 1230 and 21030 suit amplifiers up to 150watts per channel, and the 21040  and 1550 suit amplifiers up to 200 wrms per channel.  Other factors like the size of the room and the size of the other speakers in the system can also have a bearing on the best choice of subwoofer.

Any subwoofer can be ordered as a passive subwoofer design without a built in plate amplifier for customers who have their own outboard  subwoofer amplification and control.

Subwoofer 1218RTL
12" 180 wrms smaller size

Price: $595 (or $425 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 500h x 400w x320d short transmission line 40 litres
Amplifier: 180 wrms
Controls: on/auto/off; level; crossover; phase switch
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 25 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 310 mm large magnet, long throw free moving driver;
Description: This design gives fast response with good control; usable output below 25Hz; very satisfying and suitable for small to medium rooms.; effortless, clean, true bass good for music and movies.



Subwoofer 1018RTL
10" 180 wrms smaller size

Price: $595 (or $425 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 500h x 300w x 420d unique short transmission line design 40 litres
Amplifier: 180 wrms
Controls: on/auto/off; level; crossover; phase switch
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 25 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 260 mm extra long throw subwoofer with enhanced gauss.
Description: Narrower but deeper version of the 1218RTL above; Super-extended deep and clean bass; huge power, especially in the low end where you want it; effortless, performs like the bigger 1218.

Subwoofer 1220TTL
12" 200 wrms medium size

Price: $695 (or $500 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 520h x 400w x 470d unique transmission line design
Amplifier: 200 wrms
Controls: on/auto/off; level; crossover; phase switch
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 22 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 310 mm large magnet extra long throw subwoofer with enhanced gauss and die-cast basket.
Description: This unique, hybrid transmission line gives ultra low authoritative and very tight bass with usable output below 20 Hertz. This size subwoofer comes in two versions, this one, and the high end 1230ETL below.

Subwoofer 1230ETL
12" 300 wrms medium size

Price: $895 (or $695 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 520h x 400w x 470d unique transmission line design
Amplifier: 300 wrms
Controls: on/auto/off; level; crossover; phase switch
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 20 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 310 mm huge magnet extra long stroke die cast basket Eminence LAB 12 high end subwoofer driver.
Description: This has all the advanced and unique design features of the 1220TTL above, but uses a high end, more efficient Eminence Lab 12 driver with an increase in efficiency, power and bass extension. This is one of the best subwoofers made in Australia at this price, and has lovely free flowing, controlled, musical and very satisfying bass in our unique, channeled bass loading design.

Subwoofer 21030PTL
double 10" 300 wrms large size

Price: $1195 (or $850 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 620h x 440w x 620d unique transmission line design using 2 x 10 inch drivers
Amplifier: 300 wrms high current amplifier panel
Controls: on/off; level; crossover; variable phase; variable boost
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 20 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 2 x 265 mm Peerless long throw subwoofers with powerful bucking magnets
Description:The 10 inch drivers have a delightfully free, natural and very extended musical response in this larger transmission line cabinet. The longer Transmission Line in this model has a more gradual roll-off slope which allows for ultra low bass without having to force the drivers to work overly hard -- giving longer life and reliability.

Subwoofer 1540ETL
single 15" 400 wrms large size

Price: $1550 (or $1200 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 620h x 440w x 620d unique transmission line design
Amplifier: 400 wrms
Controls: Crossover defeat and adjustment; EQ level and frequency adjustment; Phase 0-180
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 19 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 395 mm double magnet extra long throw, high power, die cast basket Eminence LAB 15 high end subwoofer driver
Description: The 15 inch driver used in this subwoofer has a very solid, natural and extended response in this larger Transmission Line cabinet; This is an amazing performer, especially at this price. The response is very flat and musical right down to below 20 Hz.

Subwoofer IB1550PTL
double 15" 500 wrms large size


Price: $1895 (or $1450 kit less cabinet)
Finish: Natural semi-gloss American oak veneer, that can also be stained light oak, walnut, jarrah, rose mahogany, or black. Or, semi-gloss non-veneer black or white. Natural semi-gloss blackwood veneer is a little extra. See veneers and finishes page.
Cabinet: 620h x 440w x 620d unique transmission line design
Amplifier: 500 wrms
Controls: Crossover defeat and adjustment; EQ level and frequency adjustment; Phase 0-360
Crossover Control: adjustable 30 -- 120 Hertz
Frequency Response: 17 Hertz -- crossover +/-3dB
Inputs: low level phono and high level (speaker leads)
Driver: 2 x 400 mm large magnet extra long throw, high power, Peerless subwoofer drivers
Description:The use of two 15 inch subwoofer drivers in this Isobaric design (one is internally buried behind the visible driver), increases the performance quite dramatically when compared to a single driver in a similar cabinet. When combined with the Transmission Line  cabinet design (which optimises the loading on the driver cones, and extends low bass output), you end up with a very natural and unrestrained subwoofer that easily extends to subsonic frequencies without having to be forced by an overly high powered amp, thereby extending the life of the drivers.