James Loudspeaker

Series
AT Series Satellites	SA Small Aperture®
BE Reference Series	SLT3 Soundbars
Cube Series	SPL2 Soundbars
EMB II Subwoofers	SPL3 Soundbars
FXA/FXAQ Angled Baffle In-Wall/Ceiling	SPL5QT Soundbars
Mavericks Home Cinema	SPL6QT Quadratech/BEQ Soundbars
Omni Series	SPL8QT Quadratech/BEQ Soundbars
OT Outdoor Tower Series	ST Series Subterranean Subwoofers
OW Series - On Wall	VXQ
OW-M Marine Series - See On Wall Series	Wedge Series
PD Pendants	Custom Designs
PP Series - PowerPipe Subwoofers	Discontinued Products
QX In-Wall Series
QX In-Wall SoundBars
QXC/SXC Ceiling

Application
2-Channel/Hi-Fi
Bookshelf / In-Cabinet / Under furniture
Ceiling
In-Wall
Landscape
Marine
On-Wall
Theater
Marine Grade Wedge and On Wall Speakers

Type
Amplifiers
Angled Baffle
Centergy Technology
DSP
Grille - Rectangle
Grille - Round
Grille - Square
Subwoofers
UL1480A/UL2043

TK4-PP-SA853
SA853 Style Round or Square Toekick Adapter for PowerPipe Subwoofers

Tags:

7" Square or 8.5" Round Small Aperture (SA) Style Trim Adapter for PowerPipe Subwoofers. Toe kick to be used with and to match SA853 Grille Trims. (SA853 trim not included. Must order SA7-GRILLE-S-XX or SA8.5-GRILLE-R-XX with this TK4-PP-SA853). Requires 8.5" mounting depth behind the trim. Spacers required for installs into drywall or surface materials thicker than 1/2".

Specifications

Grille Size

7" Square or 8.5" Round

SKU#

60449

Product Documents

CAD drawings
- TK4-PP-SA853 Technical Drawing CAD (PDF)
- TK4-PP-SA853 Technical Drawing CAD (dwg)

TK4-PP-SA853 - Available downloads

Title: PowerPipe Hidden Under Staircase

Size	Resolution	(Right-click: Save link as...)
69.68 KB	600x900	Stairs_PP.jpg

TK4-PP-SA853 - Available downloads

Title: GALLERY Architectural-Hidden-LR_IMG_1555-copy.jpg

Size	Resolution	(Right-click: Save link as...)
425.72 KB	2400x1600	LR_IMG_1555-copy.jpg
425.72 KB	2400x1600	IMG_1555-copy.jpg

TK4-PP-SA853 - Available downloads

Title: PowerPipe floor vent installation

Size	Resolution	(Right-click: Save link as...)
95.08 KB	900x900	PP_floor_vent.jpg

TK4-PP-SA853 - Available downloads

Title: Toekick in marble

Size	Resolution	(Right-click: Save link as...)
134.21 KB	1191x900	powerpipe_in_marble.jpg

TK4-PP-SA853 - Available downloads

Title: PowerPipe Disguised as Ventilation Grate

Size	Resolution	(Right-click: Save link as...)
196.77 KB	1121x900	PP_Hidden_Theater.jpg

TK4-PP-SA853 - Available downloads

Title: PowerPipe under outdoor BBQ

Size	Resolution	(Right-click: Save link as...)
154.13 KB	480x480	PT_under_BBQ.jpg

TK4-PP-SA853 - Available downloads

Title: PowerPipe Outdoors

Size	Resolution	(Right-click: Save link as...)
166.21 KB	1200x900	under_stair_deck_3.jpg
166.21 KB	1200x900	under_stair_deck_3.jpg

TK4-PP-SA853 - Available downloads

Title: Powerpipe in a marine installation with custom wood grille

Size	Resolution	(Right-click: Save link as...)
82.76 KB	675x900	powerpipe-marine-1.jpg

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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.