Tube amp heat. # 2 BelCanto Ref 600 Mono's same Mytek and Tidal.
Tube amp heat. The heater in a tube is usually connected to a d. Inadequate Ventilation: Tube amps need proper ventilation to dissipate heat effectively. I have a learned British friend who is fond of saying how good tube amps sound after they warm up—giving all credit to the tubes. The heat sinks absorb the heat from the solid state amp and air moving between the fins on the heat sinks takes the heat away. (alternating current), a 50 or 60 cycle voltage taken from a winding off of the power-supply transformer. With that said, even my solid state amps can get uncomfortably warm with prolonged usage, let alone my other hybrid tube amps. ) Since energy cannot be created nor destroyed, and in idle, the amp isn't doing anything else, all of the electrical wattage must become heat. Feb 5, 2018 · The best way to keep an amp from overheating, if it needs it, is to enhance the natural airflow of the cabinet. Tube amp's usually don't have heat sinks like solid state amps. 4 days ago · We also had 125 watt TNT tube amps, all 6CA7 based designs. Nice in winter, but not so in summer Amp temp getting close to 40 degrees C. That one was 3 feet long, weighed in at 150 lbs and put out 1500 Jan 31, 2014 · It's keeping heater wires parallel than reduces noise, I don't think the wires themselves can be mechanical twisted tight enough to actual reduce radiation. The PI and preamp tube heaters draw much less current. It's noticeable buzz when the amp gets to heat and doesn't change when the volume pots are adjusted, it's just there. Feb 1, 2008 · To get a tube preamp down to these levels and be better than the main amp, the cue for DC front end heater supplies may seem obvious. The power tube sockets generally have bigger lugs to work with which is a bonus. On a side note, with class AB amps the idle bias current/power should be lower than the tube's limit because the tubes dissipate more power at higher volume. Other designs connect one winding to ground Jul 19, 2006 · Hi, I've just finished breadboarding Mikael Abdellah's KT88 amp, and everything seems to be working just fine (on the 1st try, woo-hoo!) except for my heater voltage, which is a little bit high. Most tubes are designed for parallel heating with the voltage depending on the tube type, 6. I started multiple fans with tubed guitar amps that run hot --- like the Vox AC-30. Oct 28, 2024 · But as the amp heats to 50ºC, more fans will kick on and run faster. The PTs were overkill for those 50-watts - 8 amps for the heater winding - and I don't think the tubes could load down the transformer enough. Install the power transformer into the chassis. Jun 16, 2021 · Europe is dealing with a (mild) heat wave (+30 °C). Otherwise, the tube with the lower current requirement will be killed by overvoltage. Sep 21, 2014 · I often hear complaints or observations about heat generated from tube amps. ( is this even possible?). c. Sep 14, 2023 · The amp may struggle to dissipate this heat efficiently. # 2 BelCanto Ref 600 Mono's same Mytek and Tidal. I am thinking that is a lot, and there are other variables. Here's my Princeton 5F2a clone with hum dinger pot and elevated heaters. This is what it looks like on an oscilloscope, at 20mV/division. They were the amp owner's neighbors and this was in retaliation for a long, loud night of jamming. Apr 15, 2023 · Knowing the various intricacies of each amp will help you find out which one is right for you. Power transformers for tube amplifiers are commonly made with 6. In this article, we’ll explore the impact of heat on tube amplifiers, potential issues that can arise, and ways … Is heat bad for tube Learn about the wiring of tube amp heaters, including the different types of heaters, how they are connected, and common troubleshooting tips. Guitar players, are you looking to learn more about tube amps and how to keep them in top condition? Look no further! This article is here to provide everything you need to know about tube amps and how to maintain them. May 14, 2022 · Electronics and heat are an issue. A. Most tube amp repairs at their heart are a heat issue. Jan 19, 2014 · Should the 6. I am thinking about going from an AB SS amp to a Pass Aleph 30, but I am concerned about the heat. To start with the heat, how hot do they get? Can a kid touch the protection without getting burns? I have a couple of kids and even tho I will be hard on them not to touch it there is always a risk I guess. There are a few things that can cause a tube amp to get too hot. After hearing a Cayin MT-35 mk2 I started go think I should get a tube amp. This intuitively makes sense for lowering hum inductance. About the tv, will it be bad for the If you don't use a separate heater transformer, and attempt to rectify to DC for a whole batch of heaters, then the very high transient currents in the heater winding can couple noise in to the rest of the amp if not careful. Following it will minimize damage due to a Aug 10, 2010 · Check out the Protecting Your Tube Amp from the Heat page at Sweetwater — the world's leading music technology and instrument retailer! Apr 3, 2019 · Constant Voltage vs Constant Current Constant voltage (rather than constant current) is the most common vacuum tube heater drive technique. The heater supply voltage must Nov 17, 2024 · Hoffman Amplifiers Tube Amp Forum, Heater HumI like doing both, elevate the heaters with a hum dinger pot. Love it, and it doesn't seem to put out a ton of heat, but it Jul 24, 2025 · 4 Reasons Amplifiers Get Hot Tubes One of the main reasons many amps get extremely hot is due to vacuum tubes. The can caps are situated such that they can pick up some heat from the tubes and/or power transformer. 3-V or 12. The term ‘warmth’ is often used to describe second and third-order harmonics in music. More separation and just the right amount of bass. 8 gets warm enough for the occupants in the room to take notice, along with comments of being thankful for having an air conditioned room. On the other hand, flaws in a heater circuit can produce noise. At bedroom volumes in AC fans probably are not doing much - 90 degree day outside and cranked they are absolutely of value. They are designed to reach a working temperature and stay there for long periods of time. I have a 20watt single tube orange micro dark (a real beast) however I’ve seen some videos with people explaining that you’d have to warm up the tube amp for like 5-15 minutes before cranking it up. But why is that necessary? And for how long should you let it warm up? If you just want a short answer to this age-old question, here it is: Tube amps need to warm up for around 30 seconds and there is no actual risk of damage Sep 8, 2003 · tube amp heat Acoustic AmplificationI once watched a group of irritated girls blow a couple of working tube amps full of shaving cream through the input jacks. The holes in the preamp tube sockets are so small and it is How To Build a Tube AmplifierThis is the General Amplifier Build Sequence I Recommend Assemble the circuit board with longer than needed lead wires. Why Do Tube Amps Require Warm-Up? Tube amplifiers rely on vacuum tubes (valves) to amplify audio signals. He didn't stop there. But somewhere on the internet I read that it's the resistors that really start to cook and Have amps "excessive heat protection" or anything similar that disconect the amp if it reach high temperatures? I have an amps in a shelf that I think it has poor ventilation. How Tubes Work By Rob Robinette Have comments or corrections? Email rob at: robinette at comcast dot net WARNING: A tube amplifier chassis contains lethal high voltage even when unplugged --sometimes over 700 volts AC and 500 volts DC. Anyone who has used a tube amp knows that the technology produces a lot of heat to achieve those rich tones. Wire the heater Mar 7, 2024 · Having an amplifier that produces heat during use is not uncommon, but excessive heat can be a cause for concern. Jan 6, 2024 · Technical Bulletin 09 Last Update: 01/06/2024 02:43:23 Why DC heated tubes can still hum Written by: Jac van de walle For who remembers it, some 25 years ago, it was a 'MUST' to heat tubes with AC voltage for 'better' sound. Obviously that i Nov 20, 2011 · Hello, My current build is a moderately high gain tube amp so, anything I can bring to it to minimize noise is fine by me. The phenomenon of an amp becoming hot raises questions about the underlying causes and potential solutions. Nov 9, 2012 · I was interested in installing a small fan in the back of my tube amp case to help eliminate the heat. I have an Almarro A205A 5 WPC Hello, In the Library I was just reading ‘Servicing Fender Amps’ and read this regarding Heater System Basics, wiring: *Pin two on the last (6V6) power tube goes to pins four and five on the (12AX7) pre amp tube that is closest to the power tubes. On the forums they would roast you, when you had a different opinion. 00 shipping The GZ34 tube rectifier only drops the voltage about 18 volts compared to solid state but you can use a tube rectifier with more voltage drop like the 5U4G with a 44 volt drop to emphasize the difference, but make sure your power transformer can supply 3 amps of 5 volt heater current (the GZ34 uses only 2 amps). Let's just say the owners didn't need to flip the switches to turn the amps off. Hoffman Amplifiers Tube Amp Forum, Heater wiring wire question. Whether you’re an experienced audiophile or a novice with a newfound interest in audio equipment, understanding why your tube amp is crackling can help you troubleshoot and resolve the issue. Bob __________________ "It is said, 'Go not to the elves Apr 29, 2008 · I live in Australia and it can get mighty hot and humid here during the summer. Powering heaters with a constant current can require an inconvenient voltage level. Jul 8, 2020 · If the tube is biased conservatively, it becomes about equal between the Plate and the Heater. One is to use DC voltage for the heaters. I've owned two, working, tube amps an Onix SP3 using a quad of 5881s and my Shuguang which uses KT88. I'm curious as to which amps or tubes are the culprits here. Like are the sides open or is it in a cabinet? Vintage tube amps often came in cases, the 275 has Tube Amp Wire, RG174 Cable, Heat shrink tubing, cloth covered wire, push back wire, pvc wire, teflon wire, zip cord, footswitch wire Sep 26, 2023 · In this article, we’ll explore the significance of tube amp warm-up duration and provide insights into how long you should let your amp warm up for optimal performance. What is the best way of lowering Jul 23, 2025 · In this article, you’ll get to know all about tube amp crackling, tube amp crackles when warming up, fixes for tube amp crackling when turned on, how to fix guitar amp making noise, things to look for when tube amp crackles, and more. Tubes get hot, but their surface area is usually very small compared to big heat sinks on a SS Class A amp. If you have not been trained to work with high voltage then have an amp technician service your amp. The Bel Canto is very close but ever so slightly missing something, maybe in clarity separation. The cooler the environment, the more heat escapes into the room, and the more current the amp must use to heat the elements. Blocking the airflow into it or not allowing heat to dissipate Tube amps work with heat, but not with an arbitrary amount of heat. This isn’t exclusive to guitar amps; many high-quality preamps and speaker amps with added tube circuits also heat up to provide extra warmth. (This of course, is for a power tube. If you are turning on a new build amp or heavily repaired/modified amp for the first time I recommend you use a light bulb current limiter and follow my Amp Startup Procedure. For many heater circuits, 18 AWG wire is sufficient, but this of course depends on the particular current requirements of your amplifier. That's why Soldano can get a quiet high-gain amp with something like this May 30, 2011 · 3. I like the PrimaLuna slightly better. Every now and again you find something that's not very common in the technical resources you scrounge up while self educating. But that require a whole circuit arround it. Higher ambient temperature increases the heat perceived because the temperature rise is more or less a constant, so start warmer will end warmer. The theory is that the power tubes draw the most heater current, plus all the current flows through that section. Mar 10, 2015 · The 5U4 filament is dissipating 15 watts of heat , where the amp only puts out about 2 watts a channel , the wood around the chassis is acting like a blanket , preventing it heatsinking away heat . However, nothing frustrates a music lover more than encountering crackling noises coming from their beloved tube amp. 05 ohm/5 watt resistors in a 50-watt amp. The valves used in guitar amps are indirectly heated (except for some rectifier valves discussed shortly), meaning the heater is a completely separate and not electrically connected to any other part of the valve. Is it normal for tube amps to get a little hot when playing? Thanks Jul 15, 2021 · When you get your first tube amp it’s very likely that the person handing it to you warns you about how you should let it warm up before turning it on and playing it. 9. Get ready to dive deep into the world of tube amps and learn all the tips and tricks you have to keep them working perfectly. The heat from the amp and pre are impacting my table especially after A tube amp must heat an element to a certain temperature in order to emit electrons. Which way is better to feed the heaters of a vacuum tube on a guitar amp, AC or DC? With the same transformer, is it possible to change between AC and DC supply for the heaters? Aug 24, 2020 · Hoffman Amplifiers Tube Amp Forum, Heater filament resistance question Aug 4, 2022 · The amp is pretty quiet and causes no problems BUT I keep reading about the better SQ of AC heated filaments in DHT and I have no memory of the before and after DC heater with this amp, it was a long time ago and I was not actually using it then, a friend was. Yeah, my OTC tube amp essentially serves as a space heater, which is great for the winter months, but less than ideal for the heat waves we've been experiencing recently. Since the climate seems to be getting hotter, it would be nice to have the benefits of a tube amp with no heat whatsoever. 3VAC heater winding be grounded, or wired off-ground directly through the tube filaments? Fender seems to want to ground one side of the winding immediately, and ground one side of each tube (pin 9 for 12AX7s, pin 2 or 7 for power tubes). Would adding 100 ohm 1W resistors on the screens be a good idea? Output transformers for this amp are rare as hens teeth, so it's definitely preferable to extend the life of them. Feb 8, 2008 · My guitar tube amp has a disease of some sort:cry: When I turn it on everything works fine, but after heating up (whan I've played for 15-30 minutes) it starts crackling and buzzing, probably a short circuit. Hoffman Amplifiers Tube Amp Forum, confusing heater filament circuit Nov 18, 2023 · How long does it take your tube amp to warm up? My tube amplifier has about 12 tubes and takes a couple hours for it to open up and sound really good and comfortable to listen to. In Jul 19, 2008 · Anything under 150 degrees is probably normal for a tube amp with today's higher voltages. However, like all electronic devices, tube amps are sensitive to environmental factors, including temperature. 6V, depending on line voltage. Be careful where you step. Tube Guitar Amp Troubleshooting By Rob Robinette Here's my technique for troubleshooting a tube guitar amplifier. Ensure the optimal performance and audio quality. In degrees, how much are we talking about at what levels of volume? Sep 2, 2011 · Generally speaking, would a Class A solid state amp generate a lot more or similar heat as a single ended tube amp? Not surface temp, but the air around it. 3V tubes VTG Bogen MX60A Tube Amplifier -Guitar, Harp, Audio P. In my experience, it saves the capacitors, breadboards, circuit boards, and sockets as much as the tubes. May 30, 2011 · 3. Tube electronics is an old technology, nearly all DIY'ers have to try to figure it out for themselves. Jul 15, 2021 · Store your amps in a dry environment and avoid turning them on if wet. 3 vac winding continues down the line in a twisted pair fashion to Purpose TentLabs filament supply is designed to heat DHT's the cleanest way possible, without affecting the music currents generated inside the tubes' heater, see this presentation that explains the advantages of current source filament supplies. b. Just got my first tube amp, and it sounded great (and really loud!). I once had a gaming pc graphics card fail due to a heat wave. Aug 29, 2021 · I've been asked about tube amp hum/buzz and how to get rid of it. Use grommets in the chassis holes where wires pass through. I've had a guitar technician look at it, but he couldn't find anything. Apr 24, 2008 · Some folks recommend bigger gauge wire for the power tube heaters and then drop down a bit for the PI and preamp tube heaters. Any good class A, AB or A/AB amp, is going to get at least reasonably warm, especially with less efficient speakers. #1 PrimaLuna Dialogue amp with a Mytek Brooklyn DAC using Tidal. The bigger models were either 250 or 500 watts. But be aware that only P-series (European numbering system) tubes are intentionally designed for series heating. Pin seven on the last power tube goes to pin nine on the pre amp tube. Heat output is a Oct 8, 2016 · Hello, is there technical reason or electrical benefit that in many amps, especially Fender and Dumble style amps with overhead / floating heater wiring, the heater wires are twisted but then are left parallel instead of twisted, right up to the socket pin terminal? Given room for twisting, wouldn't twisting be beneficial? May 19, 2025 · Whether you're a tube traditionalist or chasing a more modern sound, these are the best tube amps from Fender, Marshall, Vox, and more Dec 16, 2023 · Discover the essential duration for warming up your tube amp to ensure peak performance and longevity of your equipment. 6-V windings to drive the amplifier’s tube heaters in parallel. However, I come across 2 different approaches for addressing potential 60 cycle filament hum. So is it safe to play music when the temperatures are up? My Leben CS300 is like a convector. 3v like the NJR May 6, 2021 · Heat from amps? Looking through the forum threads on amplifiers I’ve read posts stating how the Pass Labs x250. One common cause is overloading the … What happens if a tube amp gets too hot? Read More » My amp will have four EL34s and seven 12A_7s. Just a hunch. Jul 30, 2018 · Have my tube / vinyl system in my home office rack with my turntable on top shelf / then 14" below that I have my tube amp / then tuner / then power conditioner on bottom. voltage near ground; the cathode is often positive of ground by the amount of bias (in a cathode-biased stage). $165. Feb 25, 2011 · Tube Amps—The Heat Obviously tubes generate the most heat in an amp. Dec 22, 2007 · Bill Ellis sent me a PM asking to explain a little more about using the heaters of a couple preamp tubes to obtain cathode bias for a tube amp, here goes. On the datasheet mentioned in my previous post we can observe typical values for a push-pull pair of tubes with 250V and 300V on the plate: Oct 21, 2020 · HEAT!! I have a very small dedicated listening room, and so I was wondering IF there are any tube amps. The two primary providers of this warmth are Sep 14, 2023 · Tube amplifiers, also known as valve amplifiers, have earned a devoted following among audiophiles and musicians for their warm and vintage sound. Are there any risks of extended usage of tube amps at this heat? Hoffman Amplifiers Tube Amp Forum, Elevated Heaters/DC heaters How? Sep 14, 2023 · Tube amplifiers are a type of electronic amplifier that uses vacuum tubes to amplify audio signals. Only two problems, the heat and I most likely want to hook it up to my tv. The difference between tube amps and solid-state amps is that tube amps use two or more bulb-shaped vacuum tubes that heat up and amplify sound signals, whereas solid-state amps use transistors. I wouldn't worry too much about it, power IS heat. If you're using Jul 27, 2025 · In this article, you’ll get to know all about tube amp warm up, how long should a tube amp warm up, how to warm up tube amp, how long does a tube amp take to warm up, and more. Follow these basic steps for extending the life of your amp’s tubes and preserve that tone you love. Sometimes input stages can be very sensitive to leakage and the resulting hum. Of course, to some of those guys, tube amps were the only thing available when they were starting out. Jul 7, 2019 · The heaters of your vacuum tubes are one of the most critical parts of your amplifier. May 20, 2022 · While tube amps are considered the gold standard in the guitar world, they aren’t very efficient. Unfortunately, in my ODS - HRM - 100 amp build the solid core wire broke from some bending it encountered while I was making some changes to the amp. If the hum goes away, then it's a tube issue, in the form of heater-to-cathode leakage. When I was done though, I noticed the area where the tubes are was quite warm. A well-designed heater circuit is quiet and unobtrusive: truly an unsung hero of any quality amp. Going to SS diodes and affixing a heatsink to the top of the transformer will get rid of a lot of heat , find an old ss amp or computer and rob the heat sink off of it . Oct 23, 2023 · I'm a relative newcomer to amp repair looking for a little help understanding the heater wiring arrangements for an old amplifier I'm working. Pre Sep 17, 2025 · Here are some possible causes of an overheating amp: poor ventilation, aggressive gain and bass boost settings, blown speakers in the circuit, low total impedance, overpowered speakers, improper grounding, and poor amp quality. Many of these techniques apply to solid state amps too. . Have my tube pre on my desk for easy volume control. May 21, 2018 · Please correct me if I'm wrong (relatively new to tube amps), but I feel like with the tubes biased this way, I shouldn't be getting this much heat from the transformers. Dec 9, 2024 · My amp is class A to 10w, but only draws about 35w at idle, and never gets more than warm, with my speakers. Aug 19, 2020 · Is it safe to use a tube amp in temps above 110-116 degrees? Am I trashing my amp? Are you sure that it is safe to be at 110-116F temperature for more than 15 minutes? Most people will be incapacitated by heat stroke after half an hour. Feb 3, 2021 · Best temperature for optimum tube performance Is there an optimum temperature range in which tubes perform best? I've been running tube amps/preamps for over 40 years and have always placed a small, quiet fan in front of them to prevent excessive heat build-up (a modified, two-door antique silver cabinet is where they reside). They came with 15" JBL's and they were LOUD! The 125 watters were the small amps. And even if the tube does have that leakage, it may perform just fine in a later stage where signal levels are higher. In this article, we will explore the common factors that contribute to amplifier overheating and provide some practical solutions to prevent this issue from occurring The valves used in guitar amps are indirectly heated (except for some rectifier valves discussed shortly), meaning the heater is a completely separate and not electrically connected to any other part of the valve. 00 + $48. Vacuum tubes are heat-sensitive devices, and if they get too hot, they can malfunction or even be damaged. I usually only need to drop half a volt or so, and use . I know that tubes use heaters to get them hot, but it sure seems like a lot of heat rising which eliminates putting a CD player or turntable on top of the cabinet of my tube amp. I've measured between 6. Stick around to get all the answers that you’re looking for. If the amp is placed in a confined space or surrounded by other equipment, it may not have sufficient airflow, leading to overheating. So, let’s get started! Sep 30, 2023 · Why your tube amp crackles when warming up and learn four effective ways to fix this issue. Jimi Hendrix, Pete Townshend, Stevie Ray Vaughan, Joe Bonamassa, Jeff Beck, Jimmy Page – they all relied, or still rely, on tube amps for their signature sound. Fans in amps are not necessarily there to cool the tube as much as they are to keep the chassis and all the goodies inside cooler. Do you think the wiring should stand higher temperatures in tube amps? There I've used series resistors to drop the heater voltage before. Using a 5V4 instead of the Oct 8, 2015 · Series wiring for heaters is only possible if all tubes require exactly the same heater current. He built a custom head for Canned Heat lead guitarist Henry Vestine. Discover the importance of proper heater wiring for optimal performance and tube longevity in your tube amplifier. Install the tube sockets and pilot light into the chassis. Would Sep 16, 2020 · The old picture tube datasheets often recommended grounding (or biasing) the heater through a 1M resistor, but in audio amps it can be (much) smaller (see Figure 3). The amp is idling and the load is an 8 Ohm power Feb 9, 2019 · The design of your amp radiates heat up away from the PCB and is not putting out enough heat to need a fan - the amps I've seen with cooling fans with the tubes facing up are 300 watt Mar 20, 2017 · I personally love teflon-jacketed silver-plated copper stranded 20 gauge for all my amp wiring, except for around the AC input/power switch/power tranny/choke/resevoir cap, and the power tube heaters, where I use 18 gauge. Apr 4, 2018 · Tube amps and heat I have 2 systems in play. Jun 8, 2014 · When you are doing internal wiring (including heater wiring) what kind of wires you are using? Normal electrical wires with PVC-insulation are specified normally for temperature ranges -25-70 centigrades (-13 -158F). Continue reading to get the answers you’re looking for. The supplies generate a very low noise output, while maintaining its' high output impedance. Apr 18, 2014 · Tube amp heater wire gauge? by psychepool » Tue Sep 03, 2024 12:21 am I would like to ask what gauge is appropriate for the wire used in the tube amp heater. Schematic shows dc stand off/elevated voltage circuit on the bottom left, and hum dinger Apr 4, 2016 · A quality tube amp is designed to gig for years. But discussion forums have a lot of questions from concerned musicians asking “How hot is too hot?” Tubes are supposed to get hot and their glass enclosure can reach upwards of 300 Apr 28, 2012 · Understanding the problem of tube heaters and hum is the first step toward ensuring your wiring job will be good enough to give happy results (no hum). Neither produce significant heat in my estimation Apr 10, 2021 · Yes, tube amps get hot. No other information. Then, at top-end heat (70ºC+), all fans run at full speed. If you have the room, it's not many parts, doesn't cost much to do. Why do you not use a fixed voltage regulator at 6. (1) The heater supply is usually A. The other method I hear about is elevating the voltage of the heaters. Below is a photo of an ST-120 amp that is also on another post on the forum here. But you probably will have to drill a hole in that chassis. Is this true? Is this why some amps with exposed tubes come with cages, or is it just because the glass is fragile? Do solid state amps run cooler? Don't laugh at my ignorance. Match the tube socket pin orientation to your layout diagram. As a result of searching, it seems that there is no clear conclusion that a specific specification is good or bad. I guess hybrid or all tube ( although more all tube)- that simply give off NO heat or very very little heat after full warm up. In the past I have used stranded 18 gauge Teflon wire for the power tubes and 20 gauge solid core Teflon wire for the preamp tubes. If you seriously trying to work in garage in the summer, you have to install AC there - either permanent or Oct 2, 2013 · Hi all, I recently joined the ranks of tube amp owners by adding an ARC VSi55 to my setup. Dec 25, 2017 · I have a (probally noob) question, and the search did not give me an answer Many use voltage regulators like the LM317 for their regulated dc heaters in tube amps/preamps. That sets up a condition where current could be emitted from the heater (the emitter) to the cathode (the "more positive" collector). I had a hum problem using recent made EF86 Svets, where an "up and over" heater construction is used and by using an AC heater supply, the anticipated low hum performance can't be met when changing tubes. It now ha Aug 6, 2001 · I heard somewhere that tube amps really pump out heat, and that one can get burned by the tubes. Any DC heated amplifiers were regarded an unprofessional compromise, for not being able to build a May 11, 2024 · Tube amplifiers are prized by audio enthusiasts for their warm and rich sound. It seems Mar 20, 2022 · Tube amps have been used by nearly every iconic electric guitar player. Nov 12, 2017 · The instructions for my first big tube amp, a Mcintosh MC 275 VI, says it needs 19" on top for heat dissipation. Running AC isn Dec 1, 2016 · I suggest that if you are concerned about the heat damaging your amp or cabling or getting a burn, run a AC plug in fan behind the amp blowing directly at the heat source. C. 5 and 6. The 6. It has 2 EL34's in pp, rectified by 2 EZ81's, input stages are ECC81, ECC82 and a pair of 6BR7's. Many amps have a vent of some sort at the top or back, so heat can dissipate up and out. up to around 37 degrees C at its extreme end. jw hfhvdiy olri g2qc zpa 97quy xyfr5eu bp1bjw2 7z3 bw3qmh