Greetings from the Motor City everyone. I am using my digital multimeter to check the impedance on a set of Rockford Fosgate Punch Pro tweeters model number PP4-T.
They are rated at 4 Ohms. I have used my digital multimeter and verified correct operation on several other speakers and subwoofers that I have and the meter is definitely providing accurate results. I'm hoping somebody can help clear up the confusion I'm having with these punch Pro tweeters. When I use my meter to check the resistance rating through the coil on one of the tweeters my numbers fluctuate on my digital display. The numbers will start low and continue to climb on the ohm scale almost as if I was charging a capacitor. When checking other 4 ohm and 8 ohm speakers that I have I get a pretty steady reading on my meter except for these tweeters. Is there some science behind the style of tweeters that I'm not understanding that would cause the ohm scale to start low and then gradually climb on both of the tweeters ?
I welcome any information and knowledge that any of you guys can offer I sincerely appreciate it thank you.
HVACJAY.
And just to put it out there, I am a licensed mechanical contractor in the Detroit area so if anybody has any questions on heating and air conditioning related items definitely feel free to send me a message. If you have some questions on equipment installations and pricing or to just get a second opinion to compare with your current local HVAC guy then please feel free.
They are rated at 4 Ohms. I have used my digital multimeter and verified correct operation on several other speakers and subwoofers that I have and the meter is definitely providing accurate results. I'm hoping somebody can help clear up the confusion I'm having with these punch Pro tweeters. When I use my meter to check the resistance rating through the coil on one of the tweeters my numbers fluctuate on my digital display. The numbers will start low and continue to climb on the ohm scale almost as if I was charging a capacitor. When checking other 4 ohm and 8 ohm speakers that I have I get a pretty steady reading on my meter except for these tweeters. Is there some science behind the style of tweeters that I'm not understanding that would cause the ohm scale to start low and then gradually climb on both of the tweeters ?
I welcome any information and knowledge that any of you guys can offer I sincerely appreciate it thank you.
HVACJAY.
And just to put it out there, I am a licensed mechanical contractor in the Detroit area so if anybody has any questions on heating and air conditioning related items definitely feel free to send me a message. If you have some questions on equipment installations and pricing or to just get a second opinion to compare with your current local HVAC guy then please feel free.
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It looks like it says "integrated 6dB/oct crossover" on the back so yeah, I think your charging a cap.
Yea, an integrated 6dB per octave crossover on a set of tweeters is going to be a single series capacitor.
Thank you very much for the replies. It sure acted like it was charging a capacitor. I had noticed in the middle section of each tweeter there was a connection on each side that I could easily access with my ohm meter so I gave it a shot and placed my meter leads on each side of the connections and that gave me the steady 4 ohm resistance reading I was searching for. Thank you again for the information and help !
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