Using an 8 Ohm amplifier output with a 16 Ohm cabinet?



Asked by: Jeremy Becker

High Mismatch. If you connect a 16 ohm speaker to your 8 ohm output transformer the impedance as seen by the power tube plate increases and plate current decreases which can lengthen the lifespan of your power tubes, especially in Class A amps.

Can I use a 16 ohm cabinet with an 8 ohm amp?





Case 1: running a 16 ohm speaker with an 8 ohm amp output



With this combination, the voltage at the speaker output will rise, while the current will almost halve. The power will drop, although you probably won’t notice it too much, as this combination will likely increase the mids in your tone.

Can I use 16 ohm speakers with an 8 ohm speakers?

Short answer is yes, it’s safe. Two 16 Ohm speakers wired in parallel results in a nominal 8 Ohm impedance.

What is the difference between 8 ohm and 16 ohm?

The physical differences between an 8-ohm and a 16-ohm speaker of the same type generally come down to voice-coil wire size and the number of voice-coil wire turns in the magnetic gap. When a speaker is manufactured, different wire is used for winding the voice coil based on the desired speaker impedance.

How many watts is a 16 ohm speaker?

With a 16 ohm speaker, the maximum output power will be 50 watts.

Can 4 ohm speakers be used with an 8 ohm amp?





Four-ohm speakers are another story, they can place higher demands on 6- or 8-ohm rated receivers and amps’ power reserves, but even those receivers/amps won’t run into trouble with 4-ohm speakers, as long as you’re not playing music or movies at a very loud volume.

Is lower impedance better for speakers?

A speaker with a lower impedance is like a bigger pipe in that it lets more electrical signal through and allows it to flow more easily. As a result, you see amplifiers that are rated to deliver 100 watts at 8 ohms impedance or watts at 4 ohms impedance.

Is 8 ohms louder than 16 ohms?

A 16 ohm speaker can handle more output, it can go louder.

How do I match my speakers to my amp?


And so that brings me to the second rule of thumb match your speaker's ohms to the ohms that your amp can handle now amps are generally designed to work with 4 8 and 16 ohm speakers.

How do you match amps with ohms?

You always want to match your amp ohms to the speaker ohms or keep your amp’s ohm output at a lower setting than the ohm of your speakers. If you have an 8-ohm speaker, and your amp is set at 4 ohms, you’ll be okay since your 8-ohm speaker would be able to handle the weaker signal from the amp.



Can you mix speakers with different ohms?

While you can connect a mix of speakers with different ohm ratings, the best sound quality will come from equally rated speakers connected in pairs, such as two 8-ohm speakers connected to Speaker A on the amp or receiver and two 4-ohm speakers hooked up to Speaker B.

Should amp ohms match speaker ohms?

The bottom line: Our general advice would be that it’s fine to connect speakers with a higher impedance to an amplifier capable operating with a lower impedance, but what you shouldn’t do is connect speakers with a lower impedance (say, 4 ohms) to an amplifier with a higher minimum impendence (10 ohms, for example).

Can you use 6 ohm and 8 ohm speakers together?

Yes, you should not have any issues intermixing speakers rated 6 ohm and 8 ohm. You only get into trouble with wide variations, like 4 ohm and 16 ohm intermixing. Generally, the ohm rating on a speaker describes it’s efficiency, in other words, how much power it takes from an amp to power the speaker.



Why are low impedance speakers harder driving?

At higher power levels, most amps are current limited. So lower impedances require more current and that is more power and it isn’t cheap or easy to get high wattage with high current amps. So one is voltage limited or voltage is the bottleneck. The other is current limited and current capability is the bottleneck.

Is 6 or 8 ohms better?

8 ohms presents an easier load for the amplifier compared to 6. For example, if an 8 ohm speaker is drawing 50 watts, it will draw twice that power at 4 ohms. The amplifier may not have enough power to provide at 4 ohms and will clip and sound distorted.