Audio ohms

[Kamranbites]

I have a 6ohms 2 way speakers, 

One woofer and one Twitter connected in series with one capacitor in between. The overall impudence of speaker is 6 ohms, so is it possible to predict or know the ohms of my woofer and Twitter. 

Some might say use multimeter but it is not possible need some other way

 

 

[AI_Must_Di3]

If they are 6 ohm speakers that means thats what they need to run correctly at there certified levels. Now, the head you install the speakers to will usually be able to fluctuate that number automatically itself or have dial settings for it. You can use the MM and probe the speaker terminals to see what the speaker is receiving at the speaker.

[Kamranbites]

36 minutes ago, AI_Must_Di3 said:

If they are 6 ohm speakers that means thats what they need to run correctly at there certified levels. Now, the head you install the speakers to will usually be able to fluctuate that number automatically itself or have dial settings for it. You can use the MM and probe the speaker terminals to see what the speaker is receiving at the speaker.

What I know is the woofer is 6 ohms so how come It is rated 6 ohms 

If woofer is 6 ohms and what is the value of Twitter ? 

[Heats with Nvidia]

 

1 hour ago, Kamranbites said:

I have a 6ohms 2 way speakers, 

One woofer and one Twitter connected in series with one capacitor in between. The overall impudence of speaker is 6 ohms, so is it possible to predict or know the ohms of my woofer and Twitter. 

Some might say use multimeter but it is not possible need some other way

 

 

The tweeter is most probably also rated 6 Ohms, but you can only be sure by finding out throgh its datasheet od measuring it.

 

By the way, giving a single value for the impedance of a speaker is like giving the elevation of a town. It might be roughly at that impedance most of the time, but it might also just vary a lot over the frequencies. Like a town built on flat land and a town built in the mountains, there is not just one elevation or in this case impedance.

 

I hope this helps a little.

 

By the way, what do you want to know it for?

[Kamranbites]

22 minutes ago, Heats with Nvidia said:

 

The tweeter is most probably also rated 6 Ohms, but you can only be sure by finding out throgh its datasheet od measuring it.

 

By the way, giving a single value for the impedance of a speaker is like giving the elevation of a town. It might be roughly at that impedance most of the time, but it might also just vary a lot over the frequencies. Like a town built on flat land and a town built in the mountains, there is not just one elevation or in this case impedance.

 

I hope this helps a little.

 

By the way, what do you want to know it for?

My Twitter is not working as it used to. so I am thinking to change it, but my two way speaker total ohms is 6 and the woofer itself is 6 ohms then what's the value of the Twitter. What I can see is my Twitter is connected parallel with the woofer and on positive wire a capacitor is connected that's all. 

[Heats with Nvidia]

Then the impedance of the tweeter is only one of the factors. Much more important is its efficiency, which means, how loud it gets with a given power input and its frequency curve. Because its efficiency, in this configuration, needs to be the exact same as that of your woofer, because if its lower in efficiency it won`t be loud enough compared to the woofer and sound muffled and when its efficiency is too high, it will be too loud. But that can be helped with a resistor in series to it.

 

In short: If you want to replace the tweeter, your best chances are just getting an exact replacement from the manufacturer.

Also this one will fit into the hole in the cabinet.

[Kamranbites]

15 minutes ago, Heats with Nvidia said:

Then the impedance of the tweeter is only one of the factors. Much more important is its efficiency, which means, how loud it gets with a given power input and its frequency curve. Because its efficiency, in this configuration, needs to be the exact same as that of your woofer, because if its lower in efficiency it won`t be loud enough compared to the woofer and sound muffled and when its efficiency is too high, it will be too loud. But that can be helped with a resistor in series to it.

 

In short: If you want to replace the tweeter, your best chances are just getting an exact replacement from the manufacturer.

Also this one will fit into the hole in the cabinet.

The speakers system is 8y old one, it is hard to find any replacement parts, i found a tweeter which is fits in my cabinet but the ohms rating is 4 ohms, if connecting 4 ohms tweeter in parallel with my 6 ohms woofer, the ohms of overall speaker changes. What I need is 6 ohms over impudence. Unable to understand how is it possible that the old setup (2 way) has ohms of 6 ohms.

[AI_Must_Di3]

5 hours ago, Kamranbites said:

What I know is the woofer is 6 ohms so how come It is rated 6 ohms 

If woofer is 6 ohms and what is the value of Twitter ? 

As already said, theyre most likely all 6 ohms, which is not a standard rating. Most speakers are 8, 4 or 2 ohms, 6 is not very popular. Whats the make and model of these? It might just be easier to trash the speakers in it and just get a new pair of quality 8 ohm units instead and install those, if the cabinets are even worth keeping. Until we know the make and model its hard to give you better advice.

[Heats with Nvidia]

4 hours ago, Kamranbites said:

The speakers system is 8y old one, it is hard to find any replacement parts, i found a tweeter which is fits in my cabinet but the ohms rating is 4 ohms, if connecting 4 ohms tweeter in parallel with my 6 ohms woofer, the ohms of overall speaker changes. What I need is 6 ohms over impudence. Unable to understand how is it possible that the old setup (2 way) has ohms of 6 ohms.

With 8 years they are newer than the vast majority of speakers, i own. My advice still is, ask the manufacturer. If they can`t or won`t supply any replacement tweeter, google a little, if anything written on the speaker can give you a clue what type of speaker it is. If all of this doesn`t work, just get similar, used speakers.

[Kamranbites]

2 hours ago, AI_Must_Di3 said:

As already said, theyre most likely all 6 ohms, which is not a standard rating. Most speakers are 8, 4 or 2 ohms, 6 is not very popular. Whats the make and model of these? It might just be easier to trash the speakers in it and just get a new pair of quality 8 ohm units instead and install those, if the cabinets are even worth keeping. Until we know the make and model its hard to give you better advice.

KENWOOD LS-N352

[Kamranbites]

2 hours ago, Heats with Nvidia said:

With 8 years they are newer than the vast majority of speakers, i own. My advice still is, ask the manufacturer. If they can`t or won`t supply any replacement tweeter, google a little, if anything written on the speaker can give you a clue what type of speaker it is. If all of this doesn`t work, just get similar, used speakers.

Ok  i wil look into it but. I still don't understand how the overall ohms of my speaker is 6. when just the woofer is 6 ohms.

[Kamranbites]

Checked for similar tweeter which exactly fit in my speaker, but the rated ohms are 8. when connecting it with my woofer in parallel it will be 3.4, it should come at 6 ohms when connecting woofer and tweeter together, i don't know which combination or what type of tweeter needed for this. 

(0 ohms tweeter )

[Heats with Nvidia]

59 minutes ago, Kamranbites said:

Checked for similar tweeter which exactly fit in my speaker, but the rated ohms are 8. when connecting it with my woofer in parallel it will be 3.4, it should come at 6 ohms when connecting woofer and tweeter together, i don't know which combination or what type of tweeter needed for this. 

(0 ohms tweeter )

To clear up your theoretical problem, you are dealing with impedance, not resistance. The difference is that an impedance is frequency dependent. This means your 6 Ohm woofer does not have 6 Ohms at every frequency. its not rare for 4 Ohm speakers to have roughly 4 ohms for some frequencies, but between 2 Ohms and 30 Ohms at others.

 

The capacitor that is in series to your tweeter changes the impedance of the tweeter to near infinity at very low frequencies, which means only the impedance of the woofer matters, but at higher frequencies, it gets more conductive and reduces the impedance. For this to actually work, the impedance of the woofer often rises a lot on its own due to its construction.

 

In short, filter construction and the overall design of a speaker is a whole lot more involved than you think right now, when you want a good result.

 

 

[Kamranbites]

8 hours ago, Heats with Nvidia said:

To clear up your theoretical problem, you are dealing with impedance, not resistance. The difference is that an impedance is frequency dependent. This means your 6 Ohm woofer does not have 6 Ohms at every frequency. its not rare for 4 Ohm speakers to have roughly 4 ohms for some frequencies, but between 2 Ohms and 30 Ohms at others.

 

The capacitor that is in series to your tweeter changes the impedance of the tweeter to near infinity at very low frequencies, which means only the impedance of the woofer matters, but at higher frequencies, it gets more conductive and reduces the impedance. For this to actually work, the impedance of the woofer often rises a lot on its own due to its construction.

 

In short, filter construction and the overall design of a speaker is a whole lot more involved than you think right now, when you want a good result.

 

 

Ok what you say i get it, the impudence doesn't stay same changes as per frequency and loudness. But when the speaker is not working, not connected to any source if I use my multimeter it shows 6 ohms how they have managed it. moreover inside there is nothing complicated wiring , just woofer and tweeter connected in parallel with a capacitor in between no crossover or coil.

[Kamranbites]

1 hour ago, HenrySalayne said:

DC resistance ≠ impedance

Ok but how does overall ohms stays 6ohms.

[Heats with Nvidia]

6 hours ago, Kamranbites said:

Ok what you say i get it, the impudence doesn't stay same changes as per frequency and loudness. But when the speaker is not working, not connected to any source if I use my multimeter it shows 6 ohms how they have managed it. moreover inside there is nothing complicated wiring , just woofer and tweeter connected in parallel with a capacitor in between no crossover or coil.

The resistance (which is the impedance at 0 Hz) of a 6 Ohm loudspeaker usually is a little below 6 Ohm. Because due to the capacitor the tweeter, at this low frequency, has a near infinite impedance. Which means, it doesn`t conduct at all. So the resistance is the same if you connect the tweeter or not. It just doesn`t matter at 0 Hz. Also the voice coil of the woofer is an inductor, which means it has a lower impedance at 0 Hz than at higher frequencies. This is the reason your multimeter shows something around 5 Ohms when you measure a 6 Ohm speaker.

 

When it comes to the impedance... It depends. At most frequencies, it will be around 6 Ohms, but depending on the design of the speaker, it might vary quite a lot.

[Kamranbites]

1 hour ago, Heats with Nvidia said:

The resistance (which is the impedance at 0 Hz) of a 6 Ohm loudspeaker usually is a little below 6 Ohm. Because due to the capacitor the tweeter, at this low frequency, has a near infinite impedance. Which means, it doesn`t conduct at all. So the resistance is the same if you connect the tweeter or not. It just doesn`t matter at 0 Hz. Also the voice coil of the woofer is an inductor, which means it has a lower impedance at 0 Hz than at higher frequencies. This is the reason your multimeter shows something around 5 Ohms when you measure a 6 Ohm speaker.

 

When it comes to the impedance... It depends. At most frequencies, it will be around 6 Ohms, but depending on the design of the speaker, it might vary quite a lot.

Ok,  so I will connect a tweeter 4 ohms which looks similar to it, so as you said the ohms is infinite, total ohms of my two way speaker wil be 6 right 

[Kamranbites]

36 minutes ago, HenrySalayne said:

You cannot simply replace a speaker with a "similar looking" speaker and expect it to sound well. It's like randomly replacing a component on a PCB with a similar looking one - just because they look similar, doesn't mean it's even the same component. And without precisely matching the characteristics, you don't get the original result.

 

I can only say it again: do yourself a favour and get another pair of loudspeakers and don't waste your time and money repairing these. It's not worth it.

Yah, I will get new pair of speaker but don't understand practically what is going on in the speaker,

As per my knowledge if two speakers are connected in parallel the ohms decrease in this case it doesn't effect, you said the capacitor is making the ohms 0 

How is it possible?the capacitor just filters off the low frequency.

[geo3]

2 hours ago, Kamranbites said:

How is it possible?the capacitor just filters off the low frequency

It's possible because the capacitor changes impedance depending on what frequency is flowing through it.  If you are looking at a speaker or any component of a speaker's electronics and wondering what specific single number is this things impedance, then you are thinking about it wrong.   If you want to do it correctly you need to plot impedance over frequency.   

 

Example: 

 

[AI_Must_Di3]

Heres everything you need to know about these speakers, they arent really worth your time. They are the cheapest plastic shelf units Kenwood could put together.

https://www.manualslib.com/products/Kenwood-Ls-N352-3325469.html