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ALLEN BRADLEY RC07GF510J 5 1 4 WATT 51 OHMS CARBON COMP RESISTOR LOT OF 50NIB
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RH100150R0FJ01 Dale Wirewound Resistors Chassis Mount 100watt 150ohm 1 1 Unit
$79.95
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Sfernice RPS250DL 250watts 82 ohms Resistor
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5 Allen Bradley Carbon Comp Resistor 10K 1 2 Watt 10 NOS
$3.45
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Lot Of 12 Sandbox Resistors 51 Ohm 5 Watt At 10
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1 4W Watt Metal Film Resistor Assortment Kit Resistors Set Lot For Led Arduino
$10.28
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Yageo CR 25 B Box of 1000 pcs 470 Kohm 1 4 Watt Carbon Film Resistors New
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TEKTRONIX B93R TERMINATING RESISTOR 93 OHMS 15 WATTS
$15.25
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10 pcs OY683K Ohmite 2 Watt 68K Ohm 10 Ceramic Comp Resistor Axial
$14.75
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10 pcs OY561K Ohmite 2 Watt 560 Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY154K Ohmite 2 Watt 150K Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY562K Ohmite 2 Watt 56K Ohm 10 Ceramic Comp Resistor Axial
$14.75
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10 pcs OY123K Ohmite 2 Watt 12K Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY183K Ohmite 2 Watt 18K Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY151K Ohmite 2 Watt 150 Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY823K Ohmite 2 Watt 82K Ohm 10 Ceramic Comp Resistor Axial
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10 pcs OY182K Ohmite 2 Watt 18K Ohm 10 Ceramic Comp Resistor Axial
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$29.00
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$21.00
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$3.90
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Resistor Carbon Film 18 Ohm 1 4 Watt 5 LOT OF 20
$3.99
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OHMITE VARIABLE RESISTOR 65317 250OHM NSN 5905 00 557 9244 MODEL J 50WATTS
$56.50
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5LL73 SET OF 4 RESISTORS CERAMIC 3W 022 OHM K X 2 3 WATT 022 OHM DOUBLES
$9.55
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4 Ohm 100 Watt resistor for dummy Load 1pc per lot
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Ohmite Resistor LN100J5R0 100 Watts Used WARRANTY
$8.50
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$124.99
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Termaline Bird Elect Corp Coaxial 50 Watt Resistor 81 Dummy Load Oil Filled
$59.95
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MIlwaukee 2400 ohm 75 watt Fixed Resistor 15 80 2400S
$10.00
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100 NEW Vishay RWR78S1001FS Wire Wound Resistor 1K OHM 1 10 Watt Axial
$89.95
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RadioShack 22K Ohm 1 4 Watt Carbon Film Resistor 5 Pack No 271 1339
$1.04
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$139.99
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5 ECG P312 10 Ohm 10 Watt Wire Wound Resistors NOS Tube Radio Audio USA Stock
$5.00
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RadioShack 100K Ohm 1 4 Watt Carbon Film Resistor 5 Pack No 271 1347
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$5.00
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QTY 1000 RESISTOR 1 2 WATT 1K OHMS 1 TOL METAL FILM
$16.00
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Resistor 22K Ohm 3W 3 Watt 5 Metal Oxide KOA MOS3CT521A222J Buy2Get1FREE 10pc
$4.15
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NEW DALE HL 225 072 POWER RESISTOR 10 OHM 250 WATTS
$39.99
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Wirewound Power Resistor 2 Ohm 120 Watt Audio and Power Supply Load
$13.75
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CLAROSTAT RESISTOR PART VK200W50 NSN 5905 01 290 2347 225WATTS 50 OHM
$39.50
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$32.00
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25 WATT POWER CERAMIC RESISTOR NEW + MOUNTING HARDWARE 2500 OHMS ADJUSTABLE
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$32.00
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$20.69
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Ohmite Ceramic 50 Ohm 225 Watts Resistor 270 225P 46
$20.00
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Ohmite 100Watts Ceramic 40Ohms Resistor NO0600F
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$28.95
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Ohmite L100J10R Resistor 10ohm 100Watt
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12 28 piece bags RESISTOR Assortment WATT 5 total 336 pieces
$8.95
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UNKNOWN 12K 1 2W 10 BULK AS IS RESISTOR 12K 1 2WATT 10 NEW 246072
$27.50
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$22.00
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ALLEN BRADLEY RC20GF160J PACK OF 50 16 OHMS 1 2 WATT RESISTORS NE 246022
$12.10
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Ohmite 2518 Vitreous Enameled Resistors 300 Watt 5 Ohm O
$19.99
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$54.99
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5 Allen Bradley Carbon Comp Resistor 47K 1 2 Watt 5
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$11.00
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Ward Leonard Vitrohm 80A5000WL Adjustable Radio Resistor Type 80A 80Watt
$29.99
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25 x 120 Ohm Carbon Film Resistors 1 4 Watt 5 120R Fast USA Shipping
$3.85
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MALLORY 7AL 12 AXIAL LEAD CERAMIC RESISTOR 12 OHMS 7 WATT NNB
$1.95
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MALLORY 7AL 3300 AXIAL LEAD CERAMIC RESISTOR 3300 OHMS 7 WATT NNB
$1.95
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$3.85
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MALLORY 4AL 800 AXIAL LEAD CERAMIC RESISTOR 800 OHMS 4 WATT NNB
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$6.95
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$4.16
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CAO Vitreous Power Resistor 15000 Ohm 30 Watt Wire Wound 3 Tolerance Industrial
$7.51
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$5.99
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10 Resistors 75 Ohm Watt 20 Carbon Comp TRW RC20GF75JM 1 2W 5W
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7DD27 RESISTOR GRAB BAG AS SHOWN VARIOUS OHM WATT CONFIGURATIONS GOOD COND
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Watt Resistor

How Does Cordless Speaker Power Efficiency Influence Sound Quality?

Modern wireless surround sound speakers will naturally squander some level of power they consume. Picking pair of cordless loudspeakers with high power efficiency may minimize the amount of wasted power. Let me clarify a number of little-known details about power efficiency that will help you choose the ideal type.

Several challenges are attributable to wireless loudspeakers that have low power efficiency: Low-efficiency wireless loudspeakers are going to squander some energy as heat and therefore are more expensive to run when compared with high-efficiency types due to their greater energy utilization. Wireless loudspeakers with lower efficiency typically have several heat sinks to help radiate the wasted energy. Heat sinks and fans require space and are expensive. The cordless speakers thus is going to turn out to be pretty big and pricey. In addition heat fans will create running noise. Cordless loudspeakers that have low efficiency cannot be put into tight spaces or within sealed enclosures given that they demand a good amount of circulation.

Low-efficiency versions demand more total power in order to output the same level of audio power as high-efficiency types. As a result they need a bigger power source which makes the cordless loudspeakers more costly to make. An increased level of heat leads to extra stress on components. The lifespan of the cordless speakers might be lowered and reliability can be compromised. High-efficiency wireless loudspeakers in contrast do not experience these problems and may be built small.

You need to try to find the power efficiency figure whilst looking for a set of wireless loudspeakers. The best spot to look is the wireless speakers data sheet. Power efficiency is commonly shown in percent. Different amp architectures deliver different power efficiencies. Class-A amps are amongst the least efficient and Class-D the most efficient. Standard power efficiencies vary from 25% to 98%. From the efficiency percentage you'll be able to calculate how much power the amp is going to waste. An amp having a 50% power efficiency will waste 50 % of the used power. An amp with 90% efficiency will waste 10%.

However, there are several things to note about power efficiency. For starters, this value is dependent on the amount of power that the amp is delivering. Because each amp is going to require a specific amount of power, regardless of the level of energy the amplifier delivers to the speakers, the amplifier power efficiency is higher the more power the amp provides and is normally given for the greatest power the amplifier can handle.

The measurement setup of amplifier power efficiency uses a power resistor that is connected to the amp. The amp itself is being fed a constant-envelope sine-wave tone. Next the energy used by the resistor is measured and divided by the power the amplifier consumes. Normally a full power report is plotted in order to show the dependency of the efficiency on the output power. For this reason the output power is swept through different values. The efficiency at every value is measured plus a efficiency plot created.

Whilst switching (Class-D) amplifiers have amongst the largest efficiency, they tend to have higher audio distortion than analog audio amplifiers and reduced signal-to-noise ratio. Therefore you will have to weigh the size of the wireless loudspeakers against the music fidelity. Then again, digital amps have come a long way and are offering improved music fidelity than in the past. Cordless loudspeakers which make use of Class-T amps come close to the audio fidelity of types which contain analog amplifiers. Subsequently selecting a pair of wireless speakers which utilize switching amplifier with great audio fidelity is now possible.

Watt Resistor
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