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BIG TRU OHM 150 OHM 166 WATT RESISTOR S $10.99 |
92 Resistors 200 Ohm 2 Watt 5 Metal Oxide New $19.95 |
Power Resistor 90J250RE with Mount Heatsink 250 ohm 11 22 watt Quantity 1 $3.91 |
Metal Film ResistorsVishay DaleCCF554K75FKE36475K ohms11 4watt100 Pcs $1.75 |

Metal Film ResistorsVishayPR02000202700JA100 270 Ohm5 1 2watt250ppm100 Pc $1.75 |
200 PC RESISTORS 1 4 WATT 1 METAL FILM SEE VALUE LIST $8.95 |
100 x 51k Ohm Carbon Film Resistors 1 4 Watt 5 Fast USA ship $3.95 |
1000 pieces 470 Ohms Resistors 1 4 Watt 5 $19.95 |

NOS 300K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 5 $1.69 |
NOS 200K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 5 $1.99 |
TEKTRONIX B93R TERMINATING RESISTOR 93 OHMS 15 WATTS $15.25 |
NOS 330K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.99 |

NOS 39 Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.50 |
NOS 15K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.50 |
NOS 12M Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $2.75 |
Metal Film Resistors Through Hole 1watt 51ohms 5 $31.05 |

220 ohm 1 4 watt 5 Allen Bradley Resistor 2 pack $3.25 |
33k ohm 1 2 watt 5 Tolerance Resistor Japan5 pack $3.50 |
47k ohm 1 2 watt 5 Tolerance Allen Bradley Resistor 5 pack $4.50 |
470k ohm 1 2 watt 5 Tolerance Resistor single $3.50 |

56k ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |
51 ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |
560 ohm 1 2 watt 5 Tolerance Resistor Japan 3 pack $3.50 |
330 ohm 1 2 watt 5 Tolerance Resistor 5 pack $3.50 |

22k ohm 1 4 watt 5 Tolerance Resistor Japan5 pack $3.00 |
10 ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |
43 ohm 1 4 watt 5 Tolerance Allen Bradley Resistor 5 pack $5.00 |
56k ohm 1 4 watt 5 Tolerance Carbon Resistor 2 pack $5.00 |

39 ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |
3k ohm 1 4 watt 5 Allen Bradley Resistor 5 pack $3.50 |
51k ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |
68k ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.25 |

3k ohm 1 4 watt 5 Tolerance Resistor 5 pack $3.00 |
10 ohm 1 2 watt 5 Tolerance Resistor Japan3 pack $3.25 |
270k ohm 1 4 watt 5 Tolerance Resistor Single $3.25 |
10 ohm 1 4 watt 5 Tolerance Fuse Resistor 4 pack $5.00 |

56k ohm 1 2 watt 10 Allen Bradley Resistor Single Pack $3.50 |
560k ohm 1 4 watt 5 Tolerance Resistor 3 pack $3.25 |
47k ohm 1 4 watt 5 Tolerance Resistor Japan5 pack $3.00 |
180k ohm 1 4 watt 5 Tolerance Resistor 2 Pack $3.50 |

39k ohm 1 4 watt 5 Tolerance Resistor Japan5 pack $3.25 |
NOS 33K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $0.99 |
NOS 330 Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.28 |
NOS 47K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $2.34 |

NOS 82K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.99 |
NOS 68K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $0.99 |
NOS 39K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.99 |
Dale RH 10 Resistor 10 Watt 18 OHM MC9421 RE65G18R0 New Lot of 8 $29.88 |

NOS 270 Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.25 |
Dale RER65F6R49R Resistor 649 OHM 10 Watt 91637 New Lot of 6 $24.88 |
Dale RH 25 Resistor 25 Watt 1 OHM C8817 New Lot of 10 $35.88 |
NOS 36K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 5 $1.06 |

NOS 68 Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.49 |
500 ohm 225 Watt Ohmite D225K500 Lug Resistor Vitereous Enameled $9.99 |
NOS 18K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.25 |
NOS 910 Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 5 $2.25 |

Ohmite L25J6K0 Fixed Resistors 25 Watt 6000 6K Ohms L25J6KO $3.99 |
NOS 820K Ohm ALLEN BRADLEY 2 Watt Carbon Comp Resistor 1960s Vintage 10 $1.00 |
25 Allen Bradley Carbon Comp Resistors 47k 1 2 Watt 5 RCR20G472JS Military Spe $11.40 |
Lot of 100 Iskra 47 ohm Carbon Film Resistors 5 resistor 1 4 watt $14.90 |

Lot Mallory Model HHJ4 4 Ohm Fixed Resistor 5 8watt $1.99 |
Ohmite D25K20R Wirewound Resistors 25watt 20ohm 10 $17.99 |
New Ohmite 20K Ohms 25 Watts Vitreous Enameled Resistor 0218 N8422 $15.00 |
Allen Bradley Carbon Comp Resistor 100 ohm 1 watt 5 package of 45 $44.00 |

CMC5 2 Ohmite 5 Watt 02 Ohm 1 Wirewound Flange Mount Resistor $17.50 |
CLN225J40R Ohmite 225 Watt 40 Ohm 5 Wirewound Vitreous Enamel Resistor $22.50 |
CS3FR030 Ohmite 3 Watt 003 Ohm 1 4 Lead Current Sense Resistor $13.75 |
CS3FR002 Ohmite 3 Watt 0002 Ohm 1 4 Lead Current Sense Resistor $13.75 |

CMC10 3 Ohmite 10 Watt 3 Ohm 1 Wirewound Flange Mount Resistor $17.50 |
CS3FR005 Ohmite 3 Watt 0005 Ohm 1 4 Lead Current Sense Resistor $13.75 |
CS3FR36 Ohmite 3 Watt 36 Ohm 1 4 Lead Current Sense Resistor $13.75 |
CS3FR015 Ohmite 3 Watt 0015 Ohm 1 4 Lead Current Sense Resistor $13.75 |

CS3FR025 Ohmite 3 Watt 0025 Ohm 1 4 Lead Current Sense Resistor $13.75 |
CL25J7R5 Ohmite 25 Watt 75 Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |
CL225J2K5 Ohmite 225 Watt 25K Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |
CMC10 5K Ohmite 10 Watt 5K Ohm 1 Wirewound Flange Mount Resistor $17.50 |

CL225J1R25 Ohmite 225 Watt 125 Ohm 5 Wirewound Vitreous Enamel Resistor $17.50 |
CS3FR020 Ohmite 3 Watt 002 Ohm 1 4 Lead Current Sense Resistor $13.75 |
25PCS 470K 1WATT 5 IRC CARBON COMP RESISTOR $14.95 |
5 Allen Bradley Carbon Comp Resistor 270 K 1 2 Watt 5 $3.70 |

5 Allen Bradley Carbon Comp Resistor 470 Ohm 1 2 Watt 10 $4.21 |
Dale RH 250 Gold Rib Power Resistor 10 Ohm 1 250 Watt $6.99 |
TEPRO 657 ohm 1 Resistor Resistors Size TS 5 Watts $10.00 |
1 ohm 1 4 watt 5 mini carbon film CFM resistors lot 50 pcs US SELLER $4.40 |

NEW Dale RH 10 10 Watt 005 ohm 1 Power Resistors 10W Model 6720 $6.75 |
10x RCD Axial Lead Precision Power Wirewound Resistor 50 Ohms Ohm 20W 20 Watt 5 $19.99 |
TEPRO 8451A 9032 8619 Resistor Resistors Size TS 5 Watt Lot of 6 $10.00 |
RadioShack 100 Ohm 1 Watt Metal Film Resistors 30 Resistors 15 x 2 pack $14.99 |

*Watt Resistor*

*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.

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