8 ohm requires more voltage for the same Watt, but 4 ohm requires thicker wires and good connections between the amplifier output and the speaker. All the speakers are 12 inch. Equal Monthly payments required for 24 or 48 Months. Whether breaking down the latest smartphone release or diving into the intricacies of smart home technology, Kern approaches each topic with thorough research and a critical eye, ensuring that their readers always get the most accurate and useful information. #2. And the larger size means the cone is more flexible to vibrate in eigenresonances (much like a drum head), which affects the overall sound. <> The dimension of inches more than likely relates to the smallest dimension of the speaker enclosure and basically if you want more power, you need something that is bigger. Check out this post for more about the differences between synthetic and conventional oil. If you are using 5W-40 instead of 15W-40, what are the benefits/drawbacks of using 5W while driving in hot climate like gulf? Call or Chat for expert advice and to hear To be honest though, i doubt that the difference would be detectable between a 10 inch and a 12 inch though - to hear an audible difference one would have to compare a 8 inch with a 15 inch for example Thats just my 2cents. If you're unsure about how much or little power your speakers need, check with the manufacturer. Every guitar or bass you Learn more about Stack Overflow the company, and our products. ), With a little algebra, you can get: It takes orders of power to get from 82dB to 102dB. all running off 9v battery if that matters. However, you may want to trade tonal accuracy for sound pressure, certainly for very low bass. The first number (5W) refers to the oils viscosity when cold, measured at 40C (104F). Read more in our privacy policy. For most people, 50 watts will be more than enough, and Denon's least expensive receiver, the AVR-1513, is rated at 110 watts per channel. If you listen at average levels, a 10-watt speaker will have the same sound as a 200-watt speaker. However, switching from 5W30 to economical 10W30 is not always recommended. All vehicles are designed to handle specific oil weight/viscosities, and this information is usually labeled on the top of the crankcase, typically on the oil cap for convenience. The speaker will still produce frequencies below (and above) the quoted range, but these will gradually decrease in level and will be lower (very rarely higher) by 3dB from frequencies in the quoted range. That is, how many watts do we need? Speakers, for their part, typically have ohm ratings of between 4 and 8. -f ? You must log in or register to reply here. Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded). On Select brand purchases. What is the difference between staged limitting and normal limitting? The Gadget BuyerC/O RockTide Media, LLC4441 Six Forks Road, Suite 106-205Raleigh, NC 27609, The Gadget Buyer | 4441 Six Forks Road, Suite 106-205, Raleigh NC 27609 | (919) 526-0419 | 2023 The Gadget Buyer | Tech Advice. PA speakers are often louder than this. A 10dB increase in the loudness of a speaker might mean that the perceived loudness doubled. The LONGER RAY 5 5W and the LONGER RAY 5 10W lasers offer precisely the same cutting area, measuring 400x400mm (15.7515.75inch). P = I2 x Resistance. But, you'll get some "drop" through the amplifier so you won't get the full voltage, and the 9V battery can't supply that much power (voltage and current at the same time) and you'd be lucky to get 1W. Why buy a charger with a 10 Watt (W) output if the same charger is available in a 15W version? Again, if you play the speaker so loudly that you hear distortion, it might end up burned. According to API motor oil guide [1], you can use the 10w30 if the lowest expected outdoor temperature is above -18C and you are following the manufacturers recommendations. The letter w means winter. Thanks. Air bubbles are trapped in the test tubes because of the low temperature. A few weeks ago while visiting an audiophile friend with very efficient Zu SuperFly speakers, I listened to his 2 x 5-watt Almarro A205A amplifier. It may not be. Keep using 10W-40 or switch to 5W-40. You need to understand the best wattage for excellent sound performance. Although you might know that synthetic oils outperform conventional oils, you might not understand why. Ohm's Law and Power formulas: It may not display this or other websites correctly. The short answer is, if you crave high volume, have wild parties or a huge room, the more, the merrier. http://www.soundz.co.za/c792-1/Powered-Speakers.aspx, How Intuit democratizes AI development across teams through reusability. Specifications Wireless Bluetooth Streaming 12 hours of playtime Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Those speakers are extremely sensitive, they're rated at 101dB @ 2.83V, so they can play stupid-loud with a handful of watts. All vehicles are designed to handle specific oil weight/viscosities, and this . Ken Scales Auto advises Oregon residents to change install 5W motor oil before the first freeze, especially for folks who live in the eastern part of the state. Which smartphone you have and how you intent to use the charger are also important aspects to consider. The highest sensitivity 12" guitar speaker can be 101dB or so and the lowest around 95dB. We've never needed to use the choke, never had to top-up the oil (it stays at the full mark), and it has never given a single puff of smoke. Some automakers do recommend different viscosities of oil depending on weather conditions. In principle, you can then achieve a fine bass response by mounting an 8" speaker in a wardrobe-sized cabinet. What output is supported by your phone? The primary difference between 5W-20 vs 5W-30 is their viscosity once your engine has reached operating temperature. Read the above article. [u]Ohm's Law[/u] defines the relationship between voltage, resistance, and current. the 100W amplifier. Check the SAE Viscosity chart called SAE J300 standard. P = V2/Impedance (This one is handy for amplifiers & speakers.) When considering 5W-20 vs 5W-30, they are the same viscosity when the engine is cold. AmazonBasics 5W Bluetooth 5.0 Speaker, Upto 36 Hrs Playtime, True Wireless Technology, Built in Mic, Multiple Connectivity Modes (Black) 44 #1 Best Seller in Multimedia Speaker Systems 1 offer from 699.00 What is in the box? Answer (1 of 10): Absolutely no problem whatsoever. Different outputs: 5W vs 10W vs 15W. From the rating, it appears that the second amp has double the power of the first. Both tubes with the steel ball were refrigerated at -18C for half an hour. Oil thats too thick can cause precious seconds to pass when little-to-no oil is available to lubricate parts, resulting in wear. Notice the different numbers in the viscosity ratings: 5W and either 20 or 30. Delivered on weekdays. Most 100 watt amplifiers spend 99% of their time sending less than 5 watts of power to the speakers, lest you get complaints from the neighbors. However, the larger the pump, the more resistant to moving the air it will be. Those would be possible sizes, yes. Did any DOS compatibility layers exist for any UNIX-like systems before DOS started to become outmoded? You find speakers that read 8" 200W , 10" 200W, 12" 200W. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup, WE need YOUR suggestions for help text (#1 - "Asking a good question"), WE need YOUR suggestions for help text (#2 - "Draft your question"). Sensitivity refers to the ability of a speaker to convert the electrical energy that comes to them into acoustical energy. Lets look at 5W-20 vs 5W-30 again. 60W JBL D130 (105dB 1W @ 1M) vs 250W ChiCom (82dB 1W@ 1M). That one might perform better (on a 9volt battery) with an 8ohm speaker. Even with all these factors, anyone who holds parties and events at home or away needs more wattage. So what do you need to look for if you want to use fast charging? How do/should administrators estimate the cost of producing an online introductory mathematics class? It also doesnt state how long the speaker sustains the power and with which materials. The story changes once your engine reaches operating temperature. Using 5W-30 instead can reduce fuel economy and impede flow throughout the engine. Less sensitive or less efficient speakers could have a high wattage and still produce low volume and distorted sound. What is giving Ronnie Wood his tone in this song. Steve currently reviews audio products for CNET and works as a freelance writer for Stereophile. When you have more amplifier and speaker power, it means that your speakers can play loud without distortion. But you can say that bigger cones allow a more efficient low-frequency reproduction. Years ago, when hiking, friends gave me the nickname "Go Go Gadgets!" fully synthetic vs. conventional), the longer you can go without changing it. I understand that inches are size of the speaker, what I want to understand, how is it connected to Watts, for example, 15" 500W Sub vs. 18" 500W sub, In terms of sound, how do these speakers differ? Is it a small class-D amplifier ? What sort of strategies would a medieval military use against a fantasy giant? 15 years of Work Gone, Don't store picks in zip bags for too long. You can increase the SPL measure of a speaker by increasing the power that goes to the speaker. Such a speaker will give you 100dB with 1 watt of power. The larger the diaphragm, the more air that can potentially be pumped. Otherwise, 5W-30 is superior to the 10W-30 for car engines. The challenging issue with speaker wattage is that it lacks a specific definition. The first number (5W) refers to the oil's viscosity when cold, measured at 40C (104F). Amplifier power is one of the most misunderstood questions facing audio consumers. Shown in the video are 5W30 and 10W30 engine oils in tubes at 100C (212F). You can switch the 80dB at 1W/1m speaker with a 100dB at 1W/1m speaker. Hello my name is Michael I have a question I have a 2004 silverado Z71 Im using Castrol 10w40 high mileage because I have 265.000 can i go back using 5w30 Castrol Edge full Synthetic, This oil is very helpful to engine work smooth. (Resistance is the resistance to current flow). How to use Slater Type Orbitals as a basis functions in matrix method correctly? The difference lies in the thickness. It helps to think of the W as standing for winter. Lower numbers mean the oil will remain more fluid and easier to circulate throughout your engine for improved start-up protection. I'd expect noticeably more clean volume from 12 watts. 10w30 oil is thicker than 5w30 oil because it has a higher viscosity in colder temperatures. In the deep bass range, an 18" will generally work fine and cheaply provide the large power you need down there. You will have better quality sound and your speaker will be safer when the amp is at or below the power rating of the speaker. Generally, when choosing a wireless charger, the output of the charger itself is not all you need to take into account. Speaker 1 U, Charging cable 1U, User manual 1U Looking for specific info? Required fields are marked *. The 5w and 10w in their names are ratings that refer to their low-temperature behavior, while the last digits . This is either by means of the system used for measurements, or by the way information is presented. In the spec sheets of a speaker you may find what you are really looking for, although these specifications can be manipulated by manufacturers to their advantage. (Technically, that's sensitivity, not efficiency, but they are directly related.). Klipsch offers a wide range of highly sensitive speakers that can make a big sound with 10 or 20 watts, and its RB-41 II bookshelf speakers are downright affordable. From the above example, you see that it takes so much power, wattage, to double the perceived loudness of a speaker. As an Amazon Associate, I earn from qualifying purchases. The sensitivity of a speaker affects how clear its sound is at high volumes and low wattage. The Type A (flat parallel blade design) Apple 5W USB, 18W and 20W USB-C power adapters, as well as the 10W and 12W USB power adapters (with Type A AC plug attached) also comply with the IEC/UL 60950-1 and IEC/UL 62368-1 . ET usually ship the same business day. Is it correct to use "the" before "materials used in making buildings are"? A speaker for larger gatherings can be 50 watts or 100 watts. Better select synthetic 10W-30. For studio speakers, 100-120 dBSPL is normal. It is, however, somewhat thicker than 5W20 at higher temperatures. Can i use 10w30 synthetics instead of normal 5w30 .lowest temperature here 19C degree .and high temperature of 40C. How-to quickly fix a split keyboard! Thicker oil provides better lubrication for your vehicle's engine parts. Thats because modern engines are built with tighter tolerances than older engines. It's not enough on its own, since it might be dire quality, but in general you want a higher number. Body, No-Fear Gift Suggestions for Picky Musicians, A Hit Sound: Simmons Introduces Titan 50 and Titan 20 Electronic Drum Kits, Clarity and Connectivity: Alto Professional Revamps TrueSonic Loudspeakers, Evolved Music Making: Yamaha Unveils MODX+ Synthesizer, Inspired Tone: The Story of Line 6 Catalyst, Learn, Play, Jam: Positive Grid Spark MINI Delivers Maximum Fun, Making Waves: Mackie's Thump Powered Speakers Refresh, Big Sound in a Small Space With Harbinger's LX Series Mixers, Production Workflow Reimagined With Akai's MPC Key 61. Hello. These two differing requirements are the reason you have bass, midrange and treble speakers in any hifi system, and you split the frequency ranges to the appropriate speakers. The physical size is very closely related to the sound, for example to get a good bass response you need to be able to physically move a lot of air - so the only way to do this is with a large speaker. When shopping for a speaker, ensure that you do not match it with an amplifier whose output capability surpasses the wattage of the speaker. Audio interface monitoring with 3.5mm cable and computer speakers, Macbook's DAC vs external / in-speaker DAC. 1,215. Does setting "full-range speakers" duplicate the lower frequencies? I was looking at a powered speakers catalog here, http://www.soundz.co.za/c792-1/Powered-Speakers.aspx. purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of Without it, your ride is nothing more than a paperweight on wheels. In these cases, we recommend switching to a lighter-viscosity oil in cold weather to improve cold starts and start-up protection. one is a Weber one the stock Legend. May 3, 2017. 5W lubricants are mostly synthetic, Synthetic base stocks have superior performance than minerals base oils. 5W is a synthetic lubricant having better oxidation resistance and longer drain intervals. Connect and share knowledge within a single location that is structured and easy to search. You can see it as the total power that a speaker can handle from the amplifier or see it as the amplifier power that a speaker needs. Spice up your small talk with the latest tech news, products and reviews. W stands for winter, for example in 5W30, the lubricant has SAE 5 viscosity when cold and SAE 30 viscosity when the engine is running. Privacy Policy & Cookies | Accessibility. What does this mean? In this case a standard 5W charger will be more than enough to do the job, even if your phone supports a higher output and/or fast wireless charging. If you are looking for 5W, it is better to use 5W-40. At 100C (212F), the viscosity or resistance to flow is almost the same for both 5W30 and 10W30. Basically in an anechoic chamber with the measuring device 1 meter away from the noise maker (i.e. Since launching his career, Kern has become a go-to source for insightful and informative articles on the latest gadgets and trends in the world of consumer electronics. These new "500W" (which is almost always peak and not RMS values) require a 10KW diesel generator to drive them where the efficient speakers an be bone crushing at 50 watts. Ask for FREE. Two identical model speakers of different sizes with the same wattage will result in different sound characteristics; the smaller speaker should punch more than the larger speaker and reproduce the recorded tone more accurately. When you start your car in the morning after its sat overnight, the oil should flow as quickly as possible since most engine wear occurs during cold starts. 10w30 engine oil will also flow slower than 5w30 engine oil when the weather is cold. 5W30 oil has the same viscosity at 100C but is thinner when cool. To understand this correctly 8ohms has more impedance thus lower wattage, less decibel range than the 4ohm 3 watts? 5W30 and 10W30 lubricants have the same viscosity at the operating temperature of the engine. Or you find Subs that read, 15" 500W, 18" 500W,15" 1400W, 18" 300W,18" 800W. For example, Samsung Fast Charge works at 9W whereas Apple Fast Charge is optimized at 7.5W. To summarize, when looking at 5W-20 vs 5W-30, their viscosities when cold will be the same, but the 5W-30 will be a little thicker at operating temperatures. Also - i know there is allot more to be said on the subject if one delves deep into the differences, this is just an oversimplified view by a novice (me) to try and make sense of a subject that has quite a steep learning curve. Usually, the answer is yes. The highest sensitivity 12" guitar speaker can be 101dB or so and the lowest around 95dB. Still, this route is actually taken for some applications; for instance, most electric bass players prefer their "refrigerators" with eight 10" speakers, rather than two 18" ones of the same power. Wattage comes cheap, but quality comes very expensively. That is usually 100C (212F) when the engine is running (in an average engine). If you look across the board, Eminence sensitivity ratings are roughly 2-3dB higher than their Celestion counterparts. But I want to play in a little band including two guitars and an electrical drumset (which has to be monitored). Then the filter is either for 8 ohm or 4 ohm. How to Check Transmission Fluid Without Dipstick, Check the SAE Viscosity chart called SAE J300 standard. Audio needs some tweeking to filter out the noise. But, an AC waveform only hits the peaks for an instant, and the RMS (a kind of average) is about .707 times the peak. 2023: The Year Epiphone Became Unaffordable, They Stole My Digital Recorder and SD cards. I have a Blackstar Artisan 15 that is switchable from 15 to 5 watts. The class of the amplifier design affects the efficiency of the amplifier, thus with some designs you can get higher output levels with less input power. Decibels is a logimetric measurement: 3 dB is twice the electric/acoustical power. But there are many other factors that will affect this. The 5W-20 will remain a little thinner at operating temperature, as indicated by its lower 20 number, while 5W-30 will provide a slightly thicker lubricating film. Want CNET to notify you of price drops and the latest stories? Thanks. Shop, Hollow & Semi-Hollow Receive Exclusives-only offers and promos, get notified about new products and innovations and receive a 10 discount on your next order. Interviews & For example, Samsung Fast Charge works at 9W whereas Apple Fast Charge is optimized at 7.5W. According to API motor oil guide [1], If you are using 10W30, you can safely switch to 5W30 (in car engines). If good sound doesn't matter, and it is a common amplifier, then 4 ohm is louder than 8 ohm. OK What do the inches mean in terms of sound? % Edit: A note about sensitivity. 2" is actually pretty big for a tweeter, for instance the Mackie 300z has a 12" for the midrange and 1.75" compression tweeter. Home > Blog > Which wireless charger is best for my smartphone? It is considered a working temperature for the average engine. An oil with a higher viscosity at operating temperature provides a thicker lubricating film, which can help improve wear protection. The only problem with 5W30 is NOACK (evaporation tendencies of a lubricant (engine oil) at high temperature). No wiring changes to the speaker circuits are required. There is so much more that affects the wattage and its importance in a speaker, including sensitivity. Apple USB power adapters are designed to be used with power sources rated to provide 100V AC to 240V AC at 50 Hz to 60 Hz. Answer (1 of 6): Strictly answering on the acoustical power and perceived loudness: you can't hear the difference. How should I choose the device power? Remember, in order to sound "twice as loud," you need an increase of 10dB, so while a 20W amplifier will sound noticeably louder than a 10W amp, it will not sound twice as loud. Therefore, drivers who live in colder climates or those prone to near or below freezing temperatures during the winter months, are advised to use a thin grade oil (e.g. It it has 188,000 miles. This enables the 5w20 motor oil to reach engine parts quicker and create less drag that reduces fuel economy. Linear Algebra - Linear transformation question. Meet Kern Campbell, a tech-savvy writer with a passion for consumer electronics and gadgets. Both all the way up - not so much. Why Wont My JBL Headphones Connect to My iPhone? For example, will you place the charger on your nightstand and charge your phone during the night? What an awesome answer,Thank You, the picture just got more clearer. If you only listen to your speaker at comfortable volumes, you never have to worry about the wattage as the amp will never use more than 20 watts. 8 ohm requires more voltage for the same Watt, but 4 ohm requires thicker wires and good connections between the amplifier output and the speaker. For all Zens wireless chargers, the product specifications tell you whether the charger supports Apple and/or Samsung Fast Charge. Hello, Well the difference between 5W and 12W is ~4dB and it takes 10dB to perceive a doubling of volume. But as long as you don't "blast" the volume, you should be OK. You won't get 8W from a 9V battery. Many systems require the motor oil to flow through tiny solenoid openings to actuate VVT components. That's why iMax theatres employ momentous subs, whereas the dubbing theatres in which films are mixed employ smaller subs. There are two principals ways to achieve this: There are many tradeoffs between the two. The lower the first number, the thinner the oil gets at extreme low temperatures. #5. Given in dBSPL, typically at 1 meter away from the speaker, this is an indicator of how loud the speaker can get. Orders, Shipping, Tracking, Your Account But If the 4 ohm is build with less quality, then the 8 ohm is better DVDdoug January 30, 2016, 4:38pm 3 4ohms is better for a low voltage bridged class-D amps, like this bridged class-D stereo amp. The best answers are voted up and rise to the top, Not the answer you're looking for? That is usually 100C (212F) when the engine is running (in an average engine). It can heavily work in cold weather. Your Bluetooth speaker should have high quality sound at any volume. The amplifier you use will determine how loud you can crank up the speaker. Which wireless charger is best for my smartphone? Resistance = Voltage/Current, The basic power formula is: HINT,,, Don't bet against the JBL. Only if the speakers have equal efficiency. The sooner the oil reaches these components, the sooner it can protect against wear. To reproduce a particular frequency, all that a cone needs to do is oscillate at that frequency, regardless of its size. To have a speaker that sounds twice as loud as a 10 watts speaker, you need a 10dB increase. No changes to the power taps on the speaker transformers are required. All rights reserved. This is a practical measure of how efficiently the speaker converts power into sound. However, when the power doubles, the SPL only increases by 3dB. If you listen at average levels, a 10-watt speaker will have the same sound as a 200-watt speaker. In a logarithmic measurement unit, a doubled number doesnt necessarily mean that the quality is twice as much. In such cases, only one watt powers a speaker. Both the oils have lower viscosity at temperatures which measure the oil's resistance to flow. However, 0W-20 and 5W-20 are gaining ground and, collectively, will eventually surpass it. This figure is always a measure that involves some deviation from a mean within a particular window of error (whether the error is presented or not). A higher SAE number means that the oil is thicker or has a high viscosity. 3 dB is the smallest change in loudness that humans can reliably perceive (notice). If we compare a 5W-30 and a 10W-30, they will behave very similarly as the engine heats up, but at start-up, the 5W-30 will provide less resistance and start easier than the 10W-30. However, the problem with thicker oil is that the oils resistance to flow is high. If good sound doesn't matter, and it is a common amplifier, then 4 ohm is louder than 8 ohm. The Governor is 102dB and V30 is 100dB, Wizard is 103dB and G12H30 is 101dB, Private Jack is 101dB and Greenback is 98dB. Although the laser head on the 20W is significantly larger than that found on the 10W, the cutting area is marginally reduced. Hi! I want to know if you have the below specifications available and also I will need a formal quote regarding it. How Long Do They Last? Always follow engine manufacturer recommendations. As per API recommendations (1) for car engines, you can use 10W30 oil if the maximum expected outside temperature is above -18C (0F). A small cone with high excursion will require less power to move, but it will also exhibit high distortion level and low efficiency (due to reduced acoustic impedance) compared to a bigger cone with lower excursion. Wattage doesn't even remotely correlate linearly with volume. Here is a section from a PDF document for the XSP_A series you linked to: -. ConTeXt: difference between text and label in referenceformat. Our Gear Advisers are available When comparing 5w20 vs. 5w30 motor oil, the 20 indicates that the oil has a lower viscosity and is thinner at higher temperatures. What is the difference? The 5w30 motor oil is thinner than the 10w40 motor oil. 5W - 30 and 10W - 30 lubricants have the same viscosity at the operating temperature of the engine. I haven't came across it, I guess this would be best for the highs? Then we'll look at 5W-30 vs 10W-30. Why Are My JBL Headphones Not Charging? We want our website to best suit your needs. I'm not sure what you are trying to say, but if an amplifier is designed to work at 4 Ohms, there is no quality loss at 4 Ohms. The lubricant must reach all parts of the engine right away. 10W model supports more engraving materials, finer engraving, and faster engraving speed compared to the 5W model. What is the difference of having one speaker per output vs many speakers on one output, Identify those arcade games from a 1983 Brazilian music video, Replacing broken pins/legs on a DIP IC package. The maximum volume will just be lower than if a 10 watt amp was used. to guide you through your entire shopping experience. OrganicTimbre said: Well the difference between 5W and 12W is ~4dB and it takes 10dB to perceive a doubling of volume. Additionally, there are some exceptions. Basically it says more voltage = more current, and more resistance = less current. That's because I had the right gadget for any situation we might face in the woods. However, an oil with a lower viscosity at operating temperature reduces internal friction, which maximizes fuel economy. The Truth About 5W Panels Being Sold Today Or after 10K KMs. Sound Design Stack Exchange is a question and answer site for sound engineers, producers, editors, and enthusiasts. If a speaker is highly sensitive, it will only require a small amount of power to produce loud sound and be clear. It is easy to come across speakers rated 110 watts, but their quality at high volume is poor. Moreover, it also means that the oil will be able to withstand cold temperatures better than a 10W or 15W oil. Assume you have two amps; one has a power rating of 10 watts and the other 20 watts. Inches vs Watts on speakers, what does it mean? Granted, the second 20-watt amp will be a little loud than the first 10-watt amp, but it will not produce twice as much sound as the first. Simply said, your wireless charger needs to be compatible with your phone and the other way around. Any engine will be at running temp pretty fast though so as long as the recommended startup grade of oil is thin enough for the engine to kick along happily till its warm enough, by time its warmed up the oil wont be any difference anyway Seeing as the main difference between 5W30 and 10W30 is the viscosity, this will not cause any huge difference to your vehicle's or your generator's performance. A speaker is a very inefficient device and unless you can compare SPLs you can't really tell from reading the documents. I have a Gibson Ga-5 les Paul jr amp which sounds good but nothing like my pro jr/ tonedog. Power (Watts) = Voltage x Current, And, if you know Ohm's Law, you can get:

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