Vinyl surface material makes it possible to use alcohol for easy cleaning.

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1 We designed our line of classroom audio products to last. Maybe that s why we back them up with a two year warranty twice as long as any other classroom headset on the market. The headbands withstand twisting and bending, our speakers are impervious to pens or paper clips, and the cords last through 250,000 flexes! Unlike competitive models, our headsets are easily cleaned by the teacher, without replacing all or part of the headset. Finally, we use vinyl in our headsets, to avoid the common allergies associated with latex products. It s easy to become a die-hard Telex fan. Just try one of our classroom audio products. Two Year Warranty! Damage-Proof Speakers Discovery/Odyssey headband features a flexible comfort sling which contours to the user s head for even weight distribution. (The 610/Explorer s dual headband is designed to be especially comfortable on any head, from child size to adult.) Superior quality polycarbonate and ABS materials provide the Odyssey/Discovery headbands with incredible strength and resilience. (610 and Explorer feature a spring steel memory headband and earcups which snaps back to its original shape when distorted.) Vinyl surface material makes it possible to use alcohol for easy cleaning. Explorer headphone features a baffled speaker grill which prevents any sharp object from reaching and damaging the diaphragm. Discovery/Odyssey s speaker grill is hidden by a felt cover. (Because the 610 utilizes a steel diaphragm, it is immune to tampering.) Telex s durable cords (removable on the Discovery/ Odyssey/610 series, giving these headsets a longer life) withstand 250,000 flexes that s 221,000 more than the less reliable coil cords on competitive models. Discovery/Odyssey can also be used for stereo or mono applications, with just a cord change. Noise cancelling microphone is standard on the Discovery headset series. Because it eliminates background noise, this is an important feature for voice recognition applications. No external screws, which reduces student tampering. Memory Headband Easy To Clean Over 250,000 Flexes

2 Specifications H E A D S E T S Discovery Series (includes microphone) (body and cord sold separately) Weight Model Description HEADSET BODY ONLY Boom Mic w/cord Cat. No. DS-100v Headset, 300 ohm drivers, volume control Dynamic 12.4 oz DS-200v Headset, 64 ohm drivers, volume control Dynamic 12.4 oz DS-ev Headset, 64 ohm drivers, volume control Electret 12.4 oz Cord Model Description CORDS ONLY Length Cat. No. CA-100 Y-cord w/two 0.250" (6.3mm) mono mic plugs 6' (1.8m) CA-110 Y-cord w/0.140" (3.5mm) stereo & 0.140" (3.5mm) mono mic plugs 6' (1.8m) CA-120 Y-cord w/two 0.140" (3.5mm) stereo mic plugs 6' (1.8m) CA-130 Y-cord w/0.140" (3.5mm) mono & 0.140" (3.5mm) stereo mic plugs 6' (1.8m) H E A D P H O N E S Odyssey Series (without microphone) (body and cord sold separately) Weight Model Description HEADPHONE BODY ONLY w/cord Cat. No. OH-200 Headphone, 64 ohm drivers, no sling, vol. control, or mic 11.7 oz OH-200v Headphone, 64 ohm drivers, vol. control, no mic 11.7 oz OH-100v Headphone, 300 ohm drivers, vol. control, no mic 11.7 oz OH-100 Headphone, 300 ohm drivers, no sling, vol. control, no mic 10.0 oz Cord Mono/ Model Description CORDS ONLY Length Stereo Cat. No. CA-150 Single cord w/0.140" (3.5mm) plug 6' (1.8m) Mono CA-160 Single cord w/0.140" (3.5mm) plug 6' (1.8m) Stereo CA-170 Single cord w/0.250" (6.3mm) plug 6' (1.8m) Mono CA-180 Single cord w/0.250" (6.3mm) plug 6' (1.8m) Stereo H E A D P H O N E S Explorer Series (without microphone) Cord Earpiece Mono/ Weight Model Length Plug Type Ohms Stereo w/cord Cat. No. Explorer EH-1 6' (1.8m) 0.250" (6.3 mm) 130 Mono 8.7 oz Explorer EH-2 6' (1.8m) 0.140" (3.5 mm) 130 Mono 8.7 oz Explorer EH-3s 6' (1.8m) 0.140" (3.5 mm) 65 Stereo 8.8 oz Explorer EH-3sv 6' (1.8m) 0.140" (3.5 mm) 65 Stereo 8.8 oz Explorer EH-4 9' (2.7m) 0.140" (3.5 mm) 65 Stereo 9.0 oz right angle coil cord H E A D P H O N E S 610 Series (without microphone) Cord Earpiece Mono/ Weight Model Length Plug Type Ohms Stereo w/cord Cat. No ' (1.5m) 0.250" (6.3 mm) 600 Mono 8.0 oz ' (1.5m) 0.140" (3.5mm) 600 Mono 8.0 oz ' (1.5m) 0.250" (6.3mm) 600 Mono 8.0 oz right angle coil cord, extended ED20592 Specifications subject to change w/o notice Lito USA 3/00 ZM 20K 2000 Telex Communications, Inc. Classroom Audio Products Portland Avenue South Minneapolis, MN USA Toll-free: Telephone: , Fax: Internet address: multimedia@telex.com Web address:

3 6 1 0 O D Y S S E Y D I S C O V E R Y E X P L O R E R Classroom Audio Products Affordable Durable Easy to Clean Comfortable Excellent Sound Quality Two Year Warranty

4 Discovery H E A D S E T Wow! What a difference the headsets make! The first group of students actually told me they were going to write you thank you notes for them! They like the fact that they fit so well... I like being able to control the volume again. They make a WORLD of difference. It will be interesting to see if the reading scores go up now that they can hear so much better. Thanks again!! Jeanne Quiros, Rainbow Montessori Child Development Center This professional grade classroom computer headset offers top audio performance and durability at a great price. Noise cancelling dynamic or electret microphone makes the Discovery ideal for computer/voice recognition applications. Modular cord assemblies with a variety of connectors make the headset compatible with many different computers, including Dell and IBM. (This feature also makes it possible to replace a damaged cord without buying a new headset.) Vinyl foam cushions are easily cleaned by the teacher, adding years to the life of the headset. (Use of vinyl also avoids common latex allergies.) Comfort features include extra deep ear cup cavities, and a flexible headband sling which contours to the user s head for even weight distribution. Replaceable/modular cord (6 /1.8 m) strength designed for over 250,000 flexes. Also allows headset to operate as either stereo or mono with a cord change. Volume control available on all Discovery models. Mono or stereo versions available. Discovery is ideal for voice recognitionapplications

5 Odyssey H E A D P H O N E Explorer H E A D P H O N E Our top of the line classroom computer headphone earns an "A" for audio performance, value and durability. Modular cord assemblies with a variety of connectors make the headphone compatible with different computers (Dell, Mac, IBM, etc.), as well as with listening centers, tape and CD players. Vinyl foam cushions are easily cleaned by the teacher, extending the life of headphone. (Use of vinyl vs. latex also reduces allergic reactions.) Comfort features include extra deep ear cup cavities, and a flexible headband sling which contours to the user s head for even weight distribution (no sling on model OH-100 and OH-200). Removable/modular cord (6 /1.8 m) strength designed for over 250,000 flexes. This feature makes it easy to replace damaged cords, and also allows headset to operate as either stereo or mono with a cord change. Volume control available on all Odyssey models except the OH-100 and OH-200. Mono or stereo versions available. Add variety to your lesson plan with Odyssey headphones This educational computer headphone raised the curve for dependability, quality construction, and value. Spring steel reinforced headband and earcups provide memory feature. No matter how you bend or twist the headset, it remembers its original shape and springs back. Baffled speaker grill prevents any sharp object from reaching and damaging the diaphragm. Dual headband is designed to be especially comfortable on a child for fewer classroom distractions, yet automatically adjusts to fit an adult. Vinyl foam cushions are easily cleaned by the teacher, adding years to the life of the headset. (Use of vinyl also avoids common latex allergies.) Dynamic, thin film mylar diaphragm speaker provide the power for high quality sound reproduction of voice/music, and impressive frequency response offers full fidelity sound. Permanently attached cord (6 /1.8 m) strength designed for over 250,000 flexes. Mono or stereo versions available. Volume control option on stereo models. Explorer fits your curriculumaswellas it does your students

6 610 Portable Group H E A D P H O N E L I S T E N I N G C E N T E R S Our best headphone value for the classroom is also built tough. Spring steel reinforced headband and earcups provide memory feature. No matter how you bend or twist the headset, it remembers its original shape and springs back. Dual headband is designed to be especially comfortable on a child, so instead of being distracted by an ill-fitting headphone, students can give their full attention to the teacher. Steel diaphragm is impossible to damage. Vinyl foam cushions are easily cleaned by the teacher, which extends the life of the headset. (Use of vinyl also avoids common latex allergies.) Magnetic elements provide quality sound for elementary and middle school applications. Cord (5 /1.5 m) strength designed for over 250,000 flexes and has protective strain relief. Unique snap-fit plug-in allows instant cord replacement. Comfortable fit allows students to focus on classwork. Telex Portable Group Listening Centers include a lightweight, durable carrying case, six or eight headphones, (mono/0.250" plug only) and a jackbox. Jackbox provides two N jacks, which enable an unlimited number of listening stations to daisy chain together. Available with Explorer or mono headphones. With or Without Volume control on the jackbox. Six or eight position junction box and headphones. Junction box/listening stations have both 1/4 (6.3mm) and 1/8 (3.5mm) connectors for use with traditional and sophisticated classroom audio equipment. Perfect for use with most any classroom equipment.