Texas star fan kit fits dx667v dx500 dx500v dx400 linear cb ham for cooling amps. I put a 3 amp in and that should hold up without over doing it with a 5 amp etc. Jun 03, 2012 i get 1500 watts out with less than 50 watts in on the high bands and much better on the low bands. Running a wire dipole or 24 foot imax veritcal i can talk all over the state pretty good on am, when i switch to using usb i can go all over the country. After 15 watts is where clearomizers and cartomizers just taste burnt and terrible. So, if your radio puts out the legal limit of 4 watts rf plus say 2 watts of audio at 100%, and the power supply uses another watt in losses, i figure, since power voltage x current. I know these amps are a different price range but i am just curious on which amp would be worth it. Once you go beyond 15 watts id say youre at the next level. It does 4 watts out of the box, and when they are all the way up, they do 5 7 watts and 40% louder when you talk on it. Please note, that cb amplifiers also require a heavy. For example, a generator may be listed as 1,500 watts delivering 120 volts. How to calculate total amps in a breaker panel hunker. If you can drive the 100 watt amp to 120 watts, you can probably get away with a 30 to 35 watt dead key and still achieve acceptable results. Technically, you cant convert directly from watts to amps because each unit measures an intrinsically different aspect of electricity.
I have tested this amp for the last few days, the amps works very good as the receiver amp,,however i only have a bearcat cb radio on am which puts out a measly 2 watts on my meter and is non adjustable, even with 2 watts i get well over 100 watts out. In terms of the hosepipe example, this would refer to the amount of water being released. Sep 11, 2016 could be anywhere between 120 amps to 185 amps. I like having my cab handle more power than my amp puts out. I have a galaxy 10 meter cb that putts out around 200 watts. These amps are usually rated for around 500 to 600 peak watts out. If you have a question that isnt answered here, please contact me by filling out the form on the about bass guitar rocks page or leave a comment below.
Never use a speaker or speakers below the minimum impedance the amplifier is designed for. This ac to dc power converter is great for use with any 12volt dc powered device that requires 5amps or less. If an appliance attached to a 120v energy source requires 1200 watts to run, it will automatically pull 10 amps of current through the line. Be sure to install an inline fuse or circuit breaker near the battery. Find a wide range of power inverters, 12 volt power supplies to power your electronic items at home or on the road. Amps can put out huge amounts of high frequency junk when overdriven hard. Why is your power bill in kilowatthours and your battery bank in milliamphours. It is relatively easy to measure amps to determine the amount of power an appliance or load uses, but the measurement must be done accurately to avoid damaging your multimeter. Featuring the best valve amps for metal, blues and other genres and styles. The page 75 linear cb ham amplifier lil perfect driver amp.
Vintage palomar skipper 300 linear amplifier amssb see below. Class d amplifiers, first proposed in 1958, have become increasingly popular in. Nov 01, 2015 in a number of older arrl publications, there is a circuit, using a pair of 6146b tubes, called the little firecracker linear that will put out between 100watts and 120watts with less than 5watts drive. I almost never run more that 800 watts because of a 4 element quad.
There was a remote start for the 4cyl genny and the amp could be online within a minute or so. The 20watt amp is double the power of the 10watt amp, but doubling the power only translates to an increase of 3 db spl. It is normal to crank up a 500 watt rms amplifier driving a 250 watt speaker. It uses constant current devices on the output cathodes that keep the outputs in class a mode. Generally, its better to go slightly higher than lower, but a margin of five amperes is acceptable. Discussion in amps and cabs started by missingsomethin, feb 26, 2014. The power p in watts w is equal to the current i in amps a, times the voltage v in volts v. We sell high powered megawatt ham radio cb radio linear amplifier power supplies, best mobile radio power supply, shortwave and hf too, all amateur radios, 50 amp, 36 amp and 33 amp 9 to 15 volt output 120 or 240 volt ac input. Jan 03, 2012 hi, i have included my last answer in this one so i hope you can now open it. You can calculate but not convert the amps from watts and volts. When your talking 11 watts versus lets say 30 watts. The cb radio allows individuals, typically on the road, to communicate with one another through a shortdistance radio system, usually over 40 channels within the 27 mhz 11 m band. Vintage turner plus three amplified cb microphone desk base ham radio 4 pin. Mobile cb antennas mobile antenna mounts mobile cb antenna accessories base cb antennas base cb antenna accessories.
All black market 11m cb amps are built in a garage or basement. It remains the best method of communication for truck drivers and long. I really dont know how it ran 600 watts of swing, but it did. Keep in mind that the power deliver by a power supply is measured in watts not in amps. So how many watts does it take to get twice as loud. But thats not the max amount of power it can put out, its dynamic power could go. The grid current never runs above 15 mills at full power and the tube has never seen swr as i run a tuner. Speakers require more or less power than others loudspeaker. Its my understanding that some tube amps clip softer with a less offensive distortion.
In a number of older arrl publications, there is a circuit, using a pair of 6146b tubes, called the little firecracker linear that will put out between 100watts and 120watts with less than 5watts drive. You could still damage the speakers with a matched amplifier, but less likely if the. As i looked at it, it appeared to have deteriorated slowly and finally failed at a very small point less than a mm wide. The watt is a unit that takes account of the power delivered by the psu, that power will be then transmitted to the transistors.
If you read the sprc sheet on 2879s they need under 15 watts drive to reach max output. I am reasonably sure if i was able to feed it with the 4 required watts i would get full. After tuning and a few mods it eventually did 5kw on the 11 meter cb band. The higher the wattage is, the more power and output from the appliance. How multiple speakers share power geoff the grey geek. Amplifier voltage gain explained matching amp to preamp. Amp is a 300 watt average depending on the output of the radio and how accurate the swr meter is.
Appliance wattsamps calculator electricity is measured in units of energy called watts, named after james watt, the inventor of the steam engine. The power p in watts w is equal to the power factor pf times the phase current i in amps a, times the rms voltage v in volts v. In a house, you might do this to have sound in another room, or outside. How to convert electric power of 800 watts w to electric current in amps a. So how can an amp put out 4000 watts of rf while only consuming 2400 or less. We take a look at amplifiers from brands such as marshall, vox and fender. You want to stay at or under 30 amps on your builds, which is about lowest resistance is. The 100w amp at loud volume levels will, however, remain cleaner, have more dynamic range, have a less flubby or farting bass response, sound tighter, cut through the mix. Generators can only put out a finite amount of power. And the amp driving the tweeter has only the higher frequencies. A handful of guys build them by hand for am use and many of there owners tend to overdrive the piss out of their amplifiers. An explanation for converting between these units, as well as conversion charts, are available further down the page. Therefore, the acclaim fresnel has a lower power requirement wattage than the cantata fresnel.
It keeps the amps off the 11 meter band god forbid one of the cbers run a clean amplifier. If the speakers wired in parallel each have a different impedance, the lower impedance. Lets imagine two ampsone amp rated at 10 watts, and a second amplifier rated at 20 watts. In fact they will do close to 500 dead key watts out with 4 watts drive in the high power setting. Voltage is measured in volts, and current is measured in amps. I most likely should of done the math to figure it out but i never. If you have a straight 40 channel amonly radio then you can pretty much purchase any of the cb amplifiers on the market. Watts to amps calculator it is used to convert the electric power in watts w to the current in amps a. Most factory receivers can put out about 10 watts per channel, so a sub amp. Like mind numbingly simple conversion as they are made to be converted but cannot cross the border as a cb that puts out 200w and is not channelized so they market it as 10m ham. Because if your amp can put out watts and your speakers can only really handle 500, the reality is that you dont have that headroom. For instance a ssb amplifier will need a delay while an amplifier for am does not. But at that point, you are overdriving the amp and it doesnt sound all that good. How to measure amps or watts with a multimeter sciencing.
How many amps will a 2879 transistor draw from a power supply. Discussion in amps and cabs bg started by spoono ghiefardi, aug 2, 2016. Electric current in amps a to electric power in watts w calculator. Contrarily, audiophile grade amps are generally underrated, so you will get an amp rated at 80w that will put out w all day. When conditions are good as the past couple of years, it was no surprise to talk several hundred miles with less than 25. The phase current i in amps a is equal to the power p in watts w, divided by the power factor pf times the. Speaker and amplifier power is not all about raw watts. Watts to amps amps to watts electrical conversion calculator. Know what wattage of stereo amplifier is best to power. You can start by selecting the type of electric current. Jun 28, 2008 the only thing in the cab was a basic cobra 40 channel cb. Midland hf757 cb linear amplifier 27mhz 10 meter 200 watt amfmssb. It can either be direct current dc or the alternating current ac single phase three phase.
The wattage is calculated by multiplying the voltage by the electrical devices load capacity in amperage watts volts x amps. When it comes to designing a circuit breaker panel, you must understand how the appliances pull current. Ideally, a cb antenna should be mounted at least 30 inches from others. Given the power supply runs off of 110 volts ac, if you see a power supply rated for 1100 watts you can do the reverse math and see that it puts out 10 amps. Wattage question about amps and speakers steve hoffman. Multiplying the voltage in a circuit, with the current flowing in the circuit, will give us the total power in the circuit, represented in watts. Bbi amp builder claims 4000 watts plugged up to a 110. How many amps will a 2879 transistor draw from a power.
So if you know any two of those elements, you can use an appropriate equation to find the third. If the ts 250 only puts out 160 watts, would it be worth the extra 80 bucks over the kl 300p, since it will put out the same. Class d amp with crown ultraefficient drive core technology weighs less than 11 lb. Though ill lower it to around 40 maximum driver watter for my linear or so watts when using an amp to run it at 600800.
Some are easy to do and fun projects but are not recommended because it shortens the life of the final, less tolerable to a highswr can burn out, generates bleed over and in some cases, pinched or poor audio. Couldnt drive it hard enough in the basement to upset it driving my large 4. Whereas you can run fuzz and other distortion effects at reasonable levels, which wont harm anything. New 12 volume fan circuit 10db less cooling fan air noise. Well there joe you average non american non truck driver who english is at best a second language who works at the factory where these amps are made. Actual maximum peak power, with a good power supply, is close to 750 or so watts. Supply 1214 vdc input power 14w input power ssb 120 w output power 100 w pepmax output po add to wish list. When it comes to volume, many musicians only consider the amplifiers power or wattage rating, and in general, more watts does mean louder.
Im gonna buy it this weekend and put any of that newer roland stuff to shame. Apr 17, 2007 the mods on a typical cb will get 610 watts instead of 45 watts. Amps multiplied by volts equals watts, which is the measurement used to determine the amount of energy. Watts is generally defined as the amount of power or energy an appliance uses consumes when operated at its maximum capacity for 1. An antenna is to a citizens band radio what a transmission is to. Whats the difference between a volt, amp, and watt. They say you should have an amplifier twice as powerful as your. This home brew amp put out 3kw the first time it was fired up. One time, he got his hands on a 4cx15000a transmitting tube that was removed from service from a local tv station. Truck cabs are sprouting an increasing number of antennas. Midland hf747 cb linear amplifier 27mhz 10 meter 100 watt amfm.
Are the amps the most important thing on a power supply. The amps output goes to the speaker and causes the driver s to oscillate. For dc power supply, amps are equal to watts divided by volts. Two months ago i was running an export radio into a high power amplifier into a large coil antenna on top of my vehicle. Nov, 2019 what always stands out in online and newspaper ads for amplifiers, stereo, and home theater receivers, is the watts perchannel wpc rating. The bleed over coming out of church pa system was halarious. It has 2 extra cooling fans mounted on top and he says it puts out 600 watts. Well, i am getting ready to order the ts 250, all my power supply will handle one thing bothers me. It only becomes relevant when running your amplifier at full power, and then it is best not to run it too close to its design limits. It puts out about 8 watts channel but really sounds like a lot more it sounds wonderful, but is relatively hard on output tubes and their life is limited.
The power p in watts w is equal to square root of 3 times the power factor pf times the phase current i. He put about 12,000 watts into a dipole antenna with it. I have played with the squelch and rf gain and i havent noticed a difference. The wattage of a gas generator is the amount of power it is capable of supplying. I did not mean to ramble on but, i would like to offer what i know so money would not be wasted in lost cbs or amps and you will get more joy and watts for your effort. Adjustable voltage from 10 to 14 volts dc output 690 watts. If you use only a low watt cb a amp with a driver it will work fine. Jan 14, 2016 the citizens band radio service or cb radio is one of the most important tools of the road. The power p in watts w is equal to the power factor pf times the phase current i in amps a, times the rms voltage. Bottom line, as was mentioned before, just use your ears.
I think it might be a 12v mobile ham converted to cb. Options are available for both alternating current ac and direct current dc. On the other hand, the surround channels may need to output a lot of power for explosions or crashes, but the front channels may be deemphasized. I used the basic circuit in my 160meter home brew transverter, with 6146a8298 tubes, and get over 100watts output. Still, it would really depend on the powerwatts of the driver thus if 1. One receiver has 50 watts perchannel wpc, another has 75, and yet another has 100. As with all metric measurements, amps can be divided into smaller or larger units by adding a prefix, in this case by adding an m to the amp hour we are renaming the amp hour to milli. So i was looking for a good amp that puts out about 2400 watts at 1 ohm. While speaker impedance changes amplifier power output, it is not a major consideration for most users. Bbi amp builder claims 4000 watts plugged up to a 110 outlet. If you want to sell a few more in the us i have a few ideasthe amps you sell being mosfet amplifiers you should take advantage of the fact that they will put out. How to convert amps to watts on gas generators sciencing. So yes, amps are important but you can just as easily judge a power supply by it wattage rating.
For example, lets use the 5 amp battery for an impact driver and a 20 volt battery for an impact driver. Use this calculator to convert watts to amps and amps to watts. The current i in amps a is equal to the power p in watts w, divided by the voltage v in volts v. The term cb linear is meant to indicate any of the blackmarket rf power amplifiers. Output power for speakers, measured in watts, is one of the most important considerations in choosing a new stereo amplifier or receiver. If i hook my iphone up to the powerhorn and amp it puts definitely out 100 watts, its very loud and clear, the cb on the other hand i dont think it even pushes out 5 amps and its very distorted.
Electric power in watts w to electric current in amps a calculator. Aug 26, 2008 so, if your radio puts out the legal limit of 4 watts rf plus say 2 watts of audio at 100%, and the power supply uses another watt in losses, i figure, since power voltage x current. Amps also remember that as this sunspot cycle fades away, no amp will compensate for atmospheric conditions, just as it does on 10 meters. Speaker impedance changes amplifier power geoff the grey. It has frequency counter and many other channels than just the cb range. Am and ssb modes can require different features on an amplifier. If the amplifier can only deliver a maximum of 50 watts of power, then the amplifier can still. What always stands out in online and newspaper ads for amplifiers, stereo. But while wattage is an important consideration, the efficiency of the speaker s that are connected to the amplifier are also an important factor in the loudness equation. The citizens band radio service or cb radio is one of the most important tools of the road. Understanding wattage, speaker efficiency, and amplifier.