User’s Guide SI 26 and SI 28 Surface Mount Speakers 68-1164-01 Rev.
Packaging Information Allen Hex Tool (plastic wrapped) Top Foam Wall Mount Assemblies Speakers (each plastic wrapped) Bottom Foam Thick Single Wall Packing Product Label Inst al Par t No. l 20 6W XX X-XX Ce X-01 iling 33- XXX X-0 1 Sp eake r RE V.
Introduction About the SI 26 and SI 28 Speakers The Extron System INTEGRATOR® SI 26 and SI 28 two-way surface mount speakers are ideally suited for classrooms, conference rooms, and boardrooms. With a weather resistant construction, they are also suitable for outdoor environments. • SI 26 features a 6.5" long-throw woofer, 1" tweeter, 150 watts continuous program capacity, and frequency response from 70 Hz to 20 kHz.
Features 6 7 1 2 12 11 3 8 9 4 5 10 Figure 3 — Speaker Features Dimensions: SI 26: 13.0" H x 8.5" W x 6.75" D (33.0 cm H x 21.6 cm W x 17.1 cm D) SI 28: 16.5" H x 11.5" W x 8.6" D (41.9 cm H x 29.2 cm W x 21.9 cm D) a b c d e f g h i j k l Dual tuned bass reflex ports 1" ferrofluid-cooled, aluminum dome tweeter Front locking access (allows for speaker position adjustment) 6.
Installation Installing the SI 26 or SI 28 Speaker The SI 26 or SI 28 can be mounted on a surface, such as a wall or post, or mounted in a bookcase, or under a shelf, and can be used with any Extron product with power amps. Extron SI 28 Surface-mount Speakers Conference Room Figure 4 — Surface speaker application Desk top or bookshelf applications 1. For quick installation on a desk top or bookshelf, simply place on a desk, shelf or other flat surfaces as desired. 2.
Installation, cont’d shown in figure 5 and tighten the hex cap screw to lock the plate in position. This makes the next steps easier to perform. Fasten the wall mount plate to the vertical surface (see step 7). Rotate this section 90°. Figure 5 — Rotate and mount the wall mount assembly 3. Mark the location of the wall mount plate's three primary mounting holes on the stud line, and drill pilot holes.
Approximate Stud line Behind Wall Wall Wall Stud Hex Cap Screw Cut access hole alongside stud and feed wires though hole. Bend wire to line up with access hole in plate. Wall Mount Assembly Figure 7 — Install wall mount assembly N Extron recommends that the wiring installation be performed by a professional audio equipment installer. 5.
Installation, cont’d 7. Place the wall mount assembly against the wall, aligning the plate holes with those drilled, and secure with appropriate hardware (see figure 5), using a powered screwdriver with an appropriate screw bit. 8. When the assembly is securely in place, loosen the hex cap screw (turn counter-clockwise) and rotate the front section back into a vertical position with the hex cap screw at the top. Using the allen hex tool, turn the hex cap screw clockwise to tighten. 9.
Anchor this end to a suitable secure point. Seismic Safety Cable Attach line here and secure. Figure 10 — Attach a seismic safety cable to the rear of the speaker Mounting the SI 26 speaker onto the wall mount assembly 3. Carefully lift the speaker above the wall mount assembly and gently slide the speaker box bracket down into the V lock groove (see figure 11) until it locks into place. Lift the speaker up to the wall mount assembly.... Box Bracket V Lock Groove ...
Installation, cont’d Top View Step 3a V Lock Groove Box Bracket Box Bracket Hook this side first. V Lock Groove Swivel and hook this side second. V Lock Groove Step 3b Box Bracket Lift the speaker to the wall mount assembly, keeping it as low as possible. Figure 12 — Hook the speaker over the edges of the V-lock groove on the wall mount assembly 3b. Rotate the speaker until the speaker box bracket left edge hooks over the left edge of the V-lock groove (see above). 3c.
3. Turn on the audio source and any associated devices. Follow the manufacturers instructions to adjust the source and device settings as desired to get the optimum audio output for your speaker application. It may be necessary to adjust the angle of the speaker (see steps 5 and 6 below) to get the best audio coverage area for your application. 4.
Troubleshooting Tips Service access In order to service the speaker it may be necessary to remove the front grill. To remove the grill: 1. Carefully remove the Extron logo, as described on page 9. 2. Remove the two small screws from the front grill (see figure 16 for location). Remove these screws to remove grill.
Observed Problem Possible Cause(s) Remedial Action 1 Speaker easily lifted from mount assembly. Locking hex cap screw not tightened enough. Following the steps on page 9, tighten the hex cap screw until it is not possible to remove the speaker. 2 No sound heard from speakers. Speaker cables not connected or damaged. Reconnect or replace speaker cable. Check cable routing. Output device (e.g., amplifier) Check that the output devices are plugged in and powered on.
Specifications Audio/acoustic and electrical Speaker type.................................... 2-way, indoor/outdoor surface mount Frequency range............................. SI 26 70 Hz to 20 kHz, -10 dB, half space SI 28 50 Hz to 20 kHz, -10 dB, half space Power capacity............................... SI 26 150 W continuous program 75 W continuous pink noise SI 28 180 W continuous program 90 W continuous pink noise Nominal sensitivity........................
Extron’s Warranty Extron Electronics warrants this product against defects in materials and workmanship for a period of five years from the date of purchase.
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