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1000PT

10" PowerPipe Subwoofer

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Inconspicuous by design, James’ PowerPipe Subwoofer offers a seamless fusion of visionary technology and revolutionary performance. James’ bandpass design produces a thunderous performance while delivering smooth frequency response and tight transitions. Flexible tube allows for multiple port placement options. Rubber support straps suspend the PowerPipe between rafters, thus eliminating vibrations. Includes: (1) 10” POWERPIPE SUBWOOFER 28” FLEXPORT and toe kick. (Note many optional toe kicks available)

Specifications
Frequency Response

25-120Hz +/-3dB

Nominal Impedance

4 ohms

Sensitivity

90dB 2.83V/1m

Recommended Power Range

250 - 1000W

Woofer

(1) 10" (254mm) Aluminum

Enclosure

MDF (Medium-Density Fibreboard)

Finishes

Black

Height

12.62 in (320.55 mm)

Width

12 in (304.80 mm)

Depth

11.5 in (292.10 mm)

Net Weight

38 lbs (17.24 kg)

Recommended Amplifier

M1000

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1000pt

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Title: 1000PT front

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Stairs pp

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Title: PowerPipe Hidden Under Staircase

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Pp floor vent

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Title: PowerPipe floor vent installation

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Powerpipe in marble

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Title: Toekick in marble

Powerpipe in marble
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Pp hidden theater

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Title: PowerPipe Disguised as Ventilation Grate

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1000pt in cabinet

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Pt under bbq

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Title: PowerPipe under outdoor BBQ

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Under stair deck 3

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Title: PowerPipe Outdoors

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Powerpipe marine 1

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Title: Powerpipe in a marine installation with custom wood grille

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Category FAQs
Answer:

We get at least one question per week about making a powerpipe tube longer or shorter, and ask if it is possible, or what the ramifications would be. It is important to realize that a powerpipe subwoofer is a completely integrated design including the transducer, enclosure and the tube, or port – it is a sophisticated tuned system. With that in mind, let’s look at how the tube, or port length, affects the performance. Powerpipes are a bandpass system, meaning their frequency response has a bandpass shape with a low frequency cutoff and a high frequency cut off. In the graph below, the red curve is a perfectly tuned powerpipe. The 1W sensitivity is about 89dB, the lower -3dB point is around 25Hz and the upper -3dB point is 90 Hz – perfect for a subwoofer.

The two additional curves show the affect of using a tube which is half the correct length and twice the correct length. The longer tube (black curve) tunes the system much lower so some efficiency is lost, the lower cutoff has moved down, but so has the upper, and shape has tilted. The shorter tube (blue curve) has the opposite effect, raising the lower cutoff and raising the upper cutoff, while also raising the efficiency. Again, the curve is tilted but in the opposite direction. One thing not shown in the simulation is how much port noise is created in each tuning and at what frequency – so guessing which has the least audible affect is difficult.


So even though the tube lengths have been drastically altered, with judicial use of EQ and additional amplifier power, these 2 modified tubes might still be acceptable in an installation, so if you have no choice but to shorten or lengthen a tube by 50%, it might still work for you. But we recommended about a ±6-inch change to the tubes provided, which is always less than a 50% change. 


If you need to run a very long distance, we can modify the port diameter and possibly get you the performance you need – please call the engineering group for more information.

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