Speaker hookup question

laatsch55

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No Easter for me. Gotta pump in the morning , then get 4 big trucks ready to go to Williston ND. The partner bought 4 LARGE pumping units we have to start hauling back. Gonna be a long two weeks, lot of trips...
 
Gibsonian

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I've paralleled 8 ohm speakers will be 4 ohms load, plain and simple (simple math). I've done it with one of my 700's in the past and sounded fine. Nothing to get your panties in a bunch over. And typical 8 ohm speaker measures around 4.5 to 6.2 and 4 ohm speaker typically measures similar ratio using multimeter but it's the impedance that matters, not dcr. Dual voice coil woofs can pose challenges but CV 9 is not that. Use fans and your head. Yes not ideal but 4 ohm load can run all day using fan. Have emperical data on this one!
 
orange

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If you've ever opened them up them you know the Panasonic Thrusters from the mini-consoles had two 16 ohm speakers in parallel for ~8 ohms.
 
Northwinds

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Don't worry Perry, I have not even tried. I have to get the E-712s back out into the garage
 
WOPL Sniffer

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Northwinds said:
Happy Easter Perry, I may give you a ring tonight or tomorrow. Just been under the weather and dealing with these Dr visits
Click to expand...
Hope you Feel better soon. I better get moving, got 2 hams and a turkey i need to cook. Got a bunch coming over for 2 o'clock pig out. Looking forward to yappin with ya.
 
WOPL Sniffer

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Gepetto said:
Hi Perry
What comment? This thread is a mile long in just 24 hours :)
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Just a comment about running 2 sets of speakers in parallel. I say it's asking for trouble for the average audio dude. Then me and Lee were discussing why the fluke reads 4 ohms at the speaker posts instead of 8. I said it's the difference between the meter (DC) and the MFG quoted rating (In AC)

Thanks Joe

P
 
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WOPL Sniffer said:
Just a comment about running 2 sets of speakers in parallel. I say it's asking for trouble for the average audio dude. Then me and Lee were discussing why the fluke reads 4 ohms at the speaker posts instead of 8. I said it's the difference between the meter (DC) and the MFG quoted rating (In AC)

Thanks Joe

P
Click to expand...
The safe bet is to put them in series, you will do no harm except that the sound quality will suffer from the amp not being able to control the center node between the 2 series speakers. Damping factor seen at each speaker will suffer as well because of the impedance of the other speaker. You may end up with flabby bass, etc.

Speakers are reactive loads, not resistive loads. Each speaker has a motor in it, the voice coil within the magnetic field of the speaker magnet. Velocity of a motor produces back EMF, velocity is directly proportional to the voltage applied. This back EMF is seen in series with the DCR of the speaker to produce the reactance (higher than DCR) seen at the amplifier posts. In a few words, that is why a meter reading of a speaker is not the true impedance listed on a speaker nameplate.

Happy Easter all!
 
WOPL Sniffer

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Gepetto said:
The safe bet is to put them in series, you will do no harm except that the sound quality will suffer from the amp not being able to control the center node between the 2 series speakers. Damping factor seen at each speaker will suffer as well because of the impedance of the other speaker. You may end up with flabby bass, etc.

Speakers are reactive loads, not resistive loads. Each speaker has a motor in it, the voice coil within the magnetic field of the speaker magnet. Velocity of a motor produces back EMF, velocity is directly proportional to the voltage applied. This back EMF is seen in series with the DCR of the speaker to produce the reactance (higher than DCR) seen at the amplifier posts. In a few words, that is why a meter reading of a speaker is not the true impedance listed on a speaker nameplate.

Happy Easter all!
Click to expand...
Thanks Joe.

Happy Easter.
 
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