How to Determine Ohm Load on a Vintage Guitar Speaker?

Vintage guitar speakers have a significant benefit making them more desirable and attractive in the market today. For instance, they emit clear sounds when playing music. But, if you disconnect the speakers, they may fail to emit sound or produce a faint sound or be noisy. Once you experience such issues, it will be advisable to solve them immediately to bring your vintage guitar to correct functioning.

How can I determine ohm load in the vintage guitar speaker? There are steps you can follow to know the ohm of the speaker. For example, you can use a multimeter and measure the recordings depending on the ohm of the speaker. Also, you may use the battery method.

In this article, we will see the best steps to follow to determine the ohm load on the vintage guitar. Also, the article gives clear answers to the frequently asked questions, including a conclusion. Please read the article to expand your knowledge concerning the vintage guitar speaker ohms.

Steps on how to determine ohm load on vintage guitar speakers

There are three ways to determine the ohm load on the vintage guitar speaker. The three ways include the following;

i. Have all materials necessaryhow to determine ohm load on vintage guitar speakers

Some of the necessary materials include the following;

  1.  The vintage guitar speaker
  2.  A 9-volt battery
  3. Multimeter
  4. Soldering iron 

ii. Disconnect the vintage guitar speaker from the power supply source and guitarDisconnect the vintage guitar speaker from the power supply source and guitar

After having all the necessary materials, the first thing to do is to dismantle the speaker from the guitar. Check the speaker’s cable and test the speaker from the cable but if the cable connectors of the guitar speaker are intact, first remove them off the terminals.

Sometimes the wires may develop some soldering, and in this case, you will need a soldering iron. Heat the soldered present until it melts and get rid of it carefully. Ensure you dispose of all other items present carefully and then proceed to the next step.

iii. Test the speak ohmTest the speak ohm

The process requires using either a multimeter or a 9-volt battery as the two methods test ohms and lower frequencies in the guitar. If using a multimeter, first configure it to record some resistance, and the displaying symbol is in ohms. Locate the terminals of the guitar speaker and place the multimeter leads on them carefully. Ensure you correctly match the terminals where the positive terminals match and vice versa.

If your guitar has a 4ohm speaker, the recordings will range from two to 4 ohms, different from a guitar with an 8ohm speaker. If the speaker is 8ohm, the multimeter will record a reading between 5 and 7, while the guitar with a 16ohm speaker records the highest resistance. For instance, the 16ohm speaker records ohms ranging from 12 to 15. Sometimes, the vintage guitar speaker may fail to record some measurements indicating that it is faulty. Also, if the multimeter records high resistance, the speaker is terrible, meaning either the connection is broken or the resistors are wrong.

The second method to determine the ohm load of the vintage guitar speaker is using a 9-volt battery. When using this method, you may require two small single conductor cables that allow you to establish the connection between the battery and the speaker. Connect the 9-volt battery to the guitar speaker using the wires. Also, you may not need the cables and connect the battery directly to the system terminals.

When using the battery method, it is essential to consider some important tips. First, only touch the terminals of the system for a quick moment. Also, ensure you use a fully discharged battery rather than one that has a full charge to get accurate results. Lastly, ensure you connect the speaker’s negative terminals to the battery’s negative terminals and vice versa to get the best recording.

iv. Test the piezo tweetersTest the piezo tweeters

The first way to test the tweeters is by using a multimeter to determine the ohm flowing through it and the guitar. The multimeter testing sometimes may not be advantageous as it can give wrong recordings making you think that your vintage guitar speaker is faulty. The most recommended way to test the tweeter is by playing the guitar quietly and listening to the sound that it emits. If the sound is unclear, it is an indication that the speaker is faulty and requires replacement.

How to calculate the ohm of the two vintage guitar speakers?

Before calculating the ohm of the speaker, first, identify its connection if it is parallel or in series. Let’s start by calculating the speakers in parallel. If your vintage guitar speakers are parallel or have the same impedance, divide the impedance by the total number of speakers. For example, if you have two 4ohm vintage guitar speakers, their ohm is;

4 divide 2 (4/2) = 2ohms or if you have four 16ohm speakers, the impedance is16 divide 4 (16/4) = 4ohms

If you have two 8ohm vintage guitar speakers in series, multiply the speakers by ohms; that is, 8 + 8 = 16 ohms. Or, if you have two 4ohm guitar speakers, the result is 4 + 4 = 8ohms.

Frequently asked questions:

  • What effect does impedance have on vintage guitar speakers?

Connecting a heavier load to the antique guitar speaker increases the amplifier’s risk of harming if something goes wrong. They may also cause the speaker to blow out, increasing replacement expense.


There are steps to determine the ohm load of the vintage guitar speaker. The steps are in the article above, and ensure you follow them carefully to obtain the best results. Also, calculating the impedance determines the ohm load. If the speakers are in parallel form, add them but if they are in parallel form, divide the impedance by the total number of the speakers.

Finally, when using a multimeter to determine the ohm load, repeat the testing process to get accurate results. Also, ensure the multimeter functions correctly to prevent you from making speaker replacements due to faulty multimeter readings. Hopefully, the article answers your question concerning the ohm load on the vintage guitar speakers.

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