8 ohm speakers with a 6 ohm output stereo?
I have an old Aiwa Stereo which outputs 6 ohms through the normal speaker output ports. It also has standard AV style jacks where i can run surround sound, which outputs 16 ohms. Next to the surround sound jacks it has a standard style AV jack that is black instead of red/white. This black jack is labeled "super woofer". I would like to be able to run my speaker system which consists of two 10-inch sub-woofers and two 6 inch normal speakers, all at 8 ohms. The stereo is an Aiwa NSX-5100 made in December of 1994 Is there any possible way to rig my woofers and speaks using only that stereo? If not, can someone tell me how to do it easily otherwise?
Can you replace two 16 ohm speakers in a combo amp with 8 ohm speakers as long as the impedance is set properly?
Yes that’s ok provided you get the series/parallel systems ok as to not overload the amplifier. However, you also have to get the resonant frequencies of the speakers appropriate (which gets more difficult as the number of speakers increases) — otherwise, for example, the speakers can suck on the amp output instead of resisting. Just one speaker sucking, because of resonating with AC signals (instead of resisting only with its nominal DC impedance) can be too much.Another problem with resonances is that that can lower and even reverse the impedance and, triggered by too many different frequencies one after the other as happens with music, could set up a series of short overloads long enough to damage the speakers/amplifiers.Any combination of speakers is ok if the amplifier has extremely low DC and AC output impedance and extremely short input-to-output time delays. The nominal bandwidth (e.g. 10–30,000Hz + or- 3db) should be set using filters before the final super-fast active power-output section.Another unfortunate thing that might happen, increasingly as the loudspeaker system becomes more complex, is with bass echo-reflections assisted by the room (rarely with the help of microphones) coinciding with the amplifier’s power-supply delays (if unregulated/badly-regulated) which can drive the speakers beyond full power with sub-sonic long-travel movements. These can be seen obviously — the speakers pump like rooting rabbits — as having nothing to do with the music.The answer to your question depends on the quality-characteristics of the amplifiers more than of the speakers. Such specifications are somewhat excluded from traditional superstitions, folk-law and dogma of “audio” electronics “engineering” specifications (which are mostly about advertising with poor regard for reality) as compared with relevant and ordinary electronics engineering knowledge.
Can I run a 4 ohm output amplifier with 2 x 8 ohm speakers? What are the consequences?
Can I run a 4 ohm output amplifier with 2 x 8 ohm speakers? What are the consequences?It's always best to match the total speaker impedance to the amplifier's specified output impedance.If the speaker impedance is higher than spec, you'll have reduced output power.If the speaker impedance is lower than spec, the amplifier will run hot and risk damage.Wiring two 8 Ohm speakers in parallel will offer a 4 Ohm load to the amplifier.
Is it safe to run my 4 ohm speaker at 8 ohm?
You don’t “run” a speaker at 4 or 8 ohms.That is a property of the speaker, and is fixed by its design, and never changes.If the speaker is 4Ω, then it is 4Ω now and for ever. If an amplifier specifies that only 8Ω speakers should be used, then you can’t use it with that amp. However, that would be a pretty strange (or spectacularly rubbish) amp.What are you really asking?
Can I use two 4 ohm speakers with on an 8 ohm amplifier?
No and yes.Every amplifier has a minimum load impedance. This value varies, each amplifier has its own value; such a load can be a low as 1ohm (for instance).The important thing to remember is never to connect a speaker (or an assembly of speakers) whose impedance (or resulting impedance) is below the minimal impedance load of the amplifier.For example, you cannot connect a 4 ohm speaker to an amplifier whose minimal impedance is 8 ohm.So:You need to read on your amplifier specs, and learn what is the minimal impedance load it can handle.You need to know that when you connect speakers together the overall impedance changes according to the amount of speakers connected and the way the speakers are connected.The are 2 main ways to connect speakers: in parallel or in series. When they are connected in the first manner the impedance drops; when they are connected in the latter manner the impedance rises.For example 2 x 8 ohm speakers connected in parallel would yield an overall impedance of 4 ohms. The same speakers connected in series would yield an overall impedance of 16 ohms.To answer your question: if your amp as a minimal load of 8 ohms, you could connect 2 speakers of 4 ohms each if you connect them in series. If you connect them in series you would have a resulting impedance of 2ohms which is far below what the amplifier can handle.Lastly, this is just one of the things you need to consider when connecting a speaker to an amp. There are other factors, one of them being matching the power ratings of the speaker to the amp power capability.
Can I use a 6 ohm speaker with a 4 ohm receiver?
Yes, using a 6 ohm speaker on a 4 ohm output is safe but will result in slightly lower output. If your amplifier puts out 100w at 4 ohm I would expect it to output 75w at 6 ohm. Aurally this would be a reduction of 1.5 db which you would is inaudible. If you went the other direction and used a 4 ohm speaker on a 8 ohm amplifier at maximum output you would run the risk of overloading your amplifier and damaging it. Note that impedance isn’t exact. An 8 ohm speaker might have 2 ohms impedance in one frequency range and 20 ohms impedance in another frequency range. Since consumers associate low impedance with higher output, marketing departments might insist on labeling a speaker 4 ohm that engineering considers to be 6 or 8 ohm.
Can a 3-ohm speaker work with a 4-ohm amplifier?
The question is not semantically correct as an amplifier is typically described by the power it delivers. Calling it a 4-ohm refers to its output impedance.There is no problem with connecting a 3-ohm speaker to that amplifier. Only be aware that an impedance is a resistance expressed as a complex number, which means it has a real part (that corresponds to the DC resistance) and an imaginary part that behaves differently based on the frequency of the current going through it.Since the two impedances are not matched, there will be some reflections at some specific frequencies.It is highly probable that this won’t be heard on a signal below 20kHz.However, if your amplifier is built to deliver it’s rated output to a 4-ohm speaker, then your speaker will draw more current. All things being equal, it might sound louder but your amplifier might heat up too much or if it is well-designed, you could burn the loudspeaker itself.If you desperately to listen to some music or anything else, go ahead and connect the loudspeaker. Just make sure to keep the volume down.
I have a pair of 8 Ohm speakers that I want to use.?
"The project failed dismally." Of course it did. You see, because headphones fit so close to your ear (or inside your outer ear if dealing with earbuds), they need very little power to effectively operate them. Two watts is about the maximum power output you will find with a headphone jack. Most are far below that and some are even as low as 10 miliwatts. So when you spliced your headphone wires with your speakers and plugged it into you headphone jack, all you did was connect your speakers to an extremely low power source. Such low power will not run a standard speaker. This is why computer speakers have built-in amplifiers. In order to use your speakers, you will need to amplify the signal before it will drive the speakers. Here is an amazing little amplifier that would work perfectly with your speakers. http://www.parts-express.com/pe/showdetl... This amp is compact and amplifies with amazing clarity considering its low cost. Your speakers would sound their best with this little gizmo. And if you feel froggy, you can even figure out a clever way of mounting this amp to your speakers to give you a custom computer/MP3 speaker project.
Can I add a 4 ohm resistor to a 4 ohm speaker to make it 8 ohm?
You could. I recommend that you check the owner's manual to see if the receiver can drive 4 ohms; many can as long as you don't try to play too loud. The problem with 4 ohm speakers is the current is higher. The resistor would take half the power so if the amplifier is rated 100W per channel 50W resistors would be needed to be sure they don't overheat. I recommend one in a metal shell to make mounting easier (back of speaker if it is particle board) Going bigger on the resistor keeps its temperature down so don't scrimp.