If this happens, simply power the unit off, unplug the unit for 10 minutes and then plug it back in and power the unit back on. Anyway, my apologies to anyone else who somehow misinterpreted my post as an endorsement of running mismatched loads on tube amps. Ofcourse you can still hear your favoruite materials with such a mismatch. The original road tech for the rig told me that while he realized the situation wasnt ideal, it was, well an endorsement rig; they had backup, and the factory would air express another one anywhere they needed in an emergency. He helps noobs like me understand analog electronics, and takes amplifier design as far as most people want to go. I hope, however, that it gives a broader picture of that the Ohms measurement means.
These days even the cheapest of amplifiers have built in protection circuits to guard against such eventuallities, but more often than not it is these cheap circuits that cause us the most problems and we often mistake the activation of these circuits as 'clipping'. Many speaker, unless they are first order crossovers, will have swings in the phase angle as well as magnitude all over the place. It also says that connecting multiple enclosures that have a combined totaly impedance of less that 2 ohms per side may result in damage to your amplifier. Movies present a lesser risk because of the greater typical dynamic range. The down side is the system won't play quite as loudly. You'll find that your intuition was correct, a sealed enclosure will yeild a second order roll off, and ported enclosures will yield fourth order roll offs. I fear you have been yet another 'victim' of scare mongering.
In other words, you should be able to run up to 2 4 ohm cabinets per channel safely in stereo mode. A: There are many variables to consider when connecting 4 ohm speakers to your system. But if it is a tube amp it is always ok to go lower like an 8 ohm head into a 4 ohm speaker. A speaker rated at 8 ohms may actually vary from 5 sometimes even less to 20 ohms or higher, depending on the frequency at which you measure the impedance. It can stress tubes and transformers. The manual says that it's minimum load is 2 ohms.
Never place another component on top or block ventilation openings. More efficient speakers Speakers with higher efficiency require much less power. And the surge suppression of the Line Conditioner is related to voltage surges not current surges. Tube amps not being run at their proper impedances always feel a little tighter and a little less tubey to me. At this low impedance, check if your amp is capable for bridge setup.
I've also used it with a 4 ohm Big Bertha generally bridged. Not quite sure I can reach those wires as going through some walls. What happens if you push the limits If you push an amp, two things can happen. Those jacks will not power a speaker or cabinet. As Ohms drop, you get closer and closer to a short circuit. I have never seen a head rated at 2.
Heres one of mine, when I was about 14 I toasted a Gretsch 6154 by forgetting to reconnect the speakers and playing it, wondering why nothing was coming out until I smelled the magic smoke it was releasing. Lowering the load impedance lowers the damping ratio, which is the ratio between the load and the electrical source impedance of the amplifier, itself. That is, both the phase angle and magnitude are presented. Remember, the lower the ohm rating the harder the amplifier has to work to supply the current, this always causes heat and eventually a shutdown or damage. If it re-engages, check your system for possible malfunctions such as intermittently shorting speaker wires, damaged speaker drivers, or it may be as simple as turning the volume down a little as not to cause the amplifier to go into protection due to overdriving. Its still fine, original trannies still at stock spec. Using a higher impedance speaker 8 O instead of 4 O just lowers the output current requirement and the amp will operate a little cooler.
Bottom line is you have match the load with the output for best results. Power rating other than continuous power to 8 ohms, are attempt to inflate the apparent power. Wire the speakers as per the instructions. It seems that sometimes there is a gap between electromagnetics theory studies and associated analytical problem solving and seeing a physical manifestation of the properties in the discussions. Because you can cite two examples of not damaging a tube amp from mismatched cabinets doesn't negate the designers' recommendation not to mismatch impedances. As most of us know, putting a short across the source of power i. If I could figure out how to attach pics this would be easier.
The lower the impedance, the higher the current and power output. He's also very down to earth and engineering oriented, for me, quite refreshing. The schematic diagram below shows how to wire a 16-ohm cabinet or a 4-ohm cabinet using two 8-ohm speakers. Of course, you might run two sets of speakers in series to have an 8 ohm load for fun. You purchase eight of the finest ceiling speakers you can find otherwise known as the. Is there anything to be gained by using a capacitor to offset the increasing reactance as frequency increases? This graph shows the impedance curves of three dynamic speakers. I'd consult the owners manual first and then Google to see what success others have had using 4 ohm speakers with that amp.
I use a program called SoundEasy. The protection circuitry may reset if there's no internal damage within the receiver. Then, there's the matter that the impedance of a speaker is not a linear resistance across its range of operation. You'll certainly get sound out of the 4 ohm speakers with your amp, but for how long is another matter! Thanks Tiamat and lhwidget for the interesting responses. Basicly, low impedance speakers will allow more current to pass through the amp's output circuit at any specific drive voltage.