That in suppressing surges, it is limiting the available current and power to the amp. Thread starter Similar threads Forum Replies Date 2 Feb 5, 2019 1 Feb 4, 2019 2 Feb 4, 2019 1 Feb 2, 2019 2 Jan 31, 2019 2 Jan 28, 2019 1 Jan 24, 2019 4 Jan 24, 2019 4 Jan 6, 2019 0 Jan 2, 2019 5 Jan 1, 2019 3 Dec 26, 2018 3 Dec 23, 2018 1 Dec 23, 2018 1 Dec 17, 2018 2 Dec 17, 2018 2 Dec 3, 2018 1 Dec 1, 2018 1 Nov 30, 2018 2 Nov 25, 2018. Based on what i am reading that would safely work for the connect:amp as the total ohm impedance would be 16 which is within its 4-16 ohm operating parameters rather than the 2 ohm set up a currently have. Unless you're gaming with really loud sound, or play your music at high levels all the time, I doubt you'll notice. Not really looking to maximize output. The question arises: How many speakers can be put on an 8 ohm amp? What Other Specifications Are Available for Your Speakers? Get an impedance matching speaker selector or get 8 ohm speakers to replace the 4-6 ohm pair. Lowering the load impedance lowers the damping ratio, which is the ratio between the load and the electrical source impedance of the amplifier, itself.
In fact many of them will perform twice as good with a 4 ohm load as opposed to 8 ohms if their design is robust enough to pump out the extra current. As HeimBrent said, you could put a resistor in series, but that would soak up half your power. However, many of the better Receivers today have a large enough power supply, heat sink area, and current capability in the amp sections to handle 4 ohm loads. It provides an indication of the load presented to an amplifier and helps with choosing the right amplifier. That would raise the impedance to 12-14 ohms which is safe for a receiver with an 8 ohm minimum.
Regarding the advantage of 4 ohm speakers, you will only hear an advantage if you listen to dynamic music such as classical and jazz. Concern is with the 4-6 ohm pair not matching up to the 8ohm receiver. Since your tech took the easy way out he has just loaded your amp with 2 ohms on each channel. Thanks Tiamat and lhwidget for the interesting responses. It's amazing how flat the impedance curve can be made after resonance by adding a capacitor and resistor in series across a woofer's terminals. Tube amps are pretty resilient, and its not like impedance is an exacting science relative to the application being discussed here.
Dedicated power amplifiers Dedicated power amps will handle 4 ohm loads with ease as this is the task they are designed for. The handles on the face still get pretty toasty warm though. Typically though, the average impedance of a 4 ohm system will be around 6 ohms 60Hz-3Khz then 6 ohms to 10 ohms 3Khz-18Khz including the cross over. There are only amps whose power is rated at 8 ohms. Emotiva also offer very good value for money multi channel power amps which make most receivers look like toys.
This gives you four speakers per channel rated at 8 ohms each. I wanted to look and see if I could find out anything useful about the amp. It can stress tubes and transformers. This procedure will allow for the most amount of watts going to the speaker cabinet. It won't affect tone but there are stresses that are causing damage that you can't see until something gives and you have to spend money to repair it. The numbers I gave out are made up to illustrate a point.
This voltage spike can punch through insulation or flash over sockets, and the spike is sitting on top of B+, so it's got a head start for a flashover to ground. The higher current drawn by the lower impedance speaker system will be the thing to watch for. With all tube heads it is best to match impedance. At 20 watts, the amp isn't going to hurt the speaker, but it could very well hurt the amp. Your amp will most likely run a bit hotter and if running really loud its possible you could cause the protection circuit to trip if the load is too much - but this is equally true of any speakers. . Ofcourse you can still hear your favoruite materials with such a mismatch.
This graph shows the impedance curves of three dynamic speakers. I fear you have been yet another 'victim' of scare mongering. As Ohms drop, you get closer and closer to a short circuit. Too much impedance, and the amp will provide very little current, and therefore very little power. That can be a good thing, for practice amps and the like. Assess your connections carefully before using your amplifier. The metric that is worth something is Impedance vs.
Because low frequencies eat up around 60% of the current, diverting these to a powered subwoofer can free up your main amp to handle less current demanding mids and highs and so can be relatively cooler and taxing at 4 ohm loads. Also keep in mind that your power supply has a roughly 8:1 step down transformer. Will the amp fry or the speaker? If you want headbanger volumes then search out some more efficient speakers. You'll need an amp nearer the £1k mark to start drive 4ohms properly. Maybe I need to get out and look at some of the newer high end gear.
Don't go crazy with the sound levels, at least not right away or while under chemical influences , and keep an eye or rather finger on the amp heatsink temperatures. If the input to the transformer falls, meaning, for whatever reason, the voltage on your house power mains drop, the output of this magic transformer rises to compensate for the drop in the input. The power tubes simply refuse to put out all that much more current with a lower-impedance load, so death by overheating with a too-low load is all but impossible - not totally out of the question but extremely unlikely. These speakers can be difficult to drive. This in turn generates less heat since the amp isn't driven as hard. As said before, don't blast it and you'll be fine. Tube amps not being run at their proper impedances always feel a little tighter and a little less tubey to me.
If you're really going to jump in with both feet, you might want to consider a design program that will model drivers', crossovers', enclosures' and complete systems' responses impedance, freq response, and phase. Separate Power amps Most separate power amps have more than a sufficient power supply and power amp sections for driving 4 ohm loads with ease. A 4 ohm loudspeaker can encourage a marginally designed amplifier to deliver more current than it comfortably can. Avoid the build up of heat Firstly, the amp should not be placed into a closed rack and if this can't be avoided, fans should be installed that come on automatically without fail when the system is in use. Never place another component on top or block ventilation openings. Nelson Pass's site is good for amp design also.