Audio Freaks
Road Master
Joined: Jun 2007
Posts: 1,092
Likes: 35
From: Fl
Series hookup is R1+R2, parallel hookup is a bit more complicated. When running speakers in parallel it's R1XR2 divided by R1+R2. In this case running 4 ohm speakers in parallel would be R1 (4) times R2 (4) =16 ohms, divided by R1 (4) plus R2 (4) = 8 ohms. 16 divided by 8 equals a final impedance of 2 ohms.
Hey guys just an update..i received my amp and have her installed, im just waiting on my back ordered Hertz hcx165's, but anyways it has given me some time to research this whole audio stuff a little more and have a question. So i ordered two sets of the Hertz speakers, both are 4 ohm. The amp is 2 channel 2 ohm rated. It says on the Biketronics website that it "Will power four, 4 ohm speakers connected in parallel". Now if you connect 4 , 4 ohm speakers in parallel wouldn't the impedance drop to 1 ohm? or is my math wrong in this case?.. And that obviously wouldn't be optimal to power these speakers?... must be missing something lol.. Again still learning this stuff so it may be very simple and i could be completely wrong lol..
Thanks again
Marc
Thanks again
Marc
Last edited by floridapoolboy; Dec 9, 2012 at 10:22 PM.
Road Master
Joined: Jul 2011
Posts: 1,170
Likes: 14
From: washington dc
Can someone help me determine how long I can run my cd player off the battery then start the bike, assuming a good battery? I (currently) have the HK head unit driving a HogTune 70.2 and Focal PC 165s.
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
Hey guys just an update..i received my amp and have her installed, im just waiting on my back ordered Hertz hcx165's, but anyways it has given me some time to research this whole audio stuff a little more and have a question. So i ordered two sets of the Hertz speakers, both are 4 ohm. The amp is 2 channel 2 ohm rated. It says on the Biketronics website that it "Will power four, 4 ohm speakers connected in parallel". Now if you connect 4 , 4 ohm speakers in parallel wouldn't the impedance drop to 1 ohm? or is my math wrong in this case?.. And that obviously wouldn't be optimal to power these speakers?... must be missing something lol.. Again still learning this stuff so it may be very simple and i could be completely wrong lol..
Thanks again
Marc
Thanks again
Marc
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
Dude really.. if in doubt, don't.
Tourer
Joined: Dec 2012
Posts: 393
Likes: 0
From: Northwest OH
Mike
Road Warrior
Joined: Apr 2010
Posts: 1,529
Likes: 8
From: Central Fl.
Help me out here, the Polk Audio's say on the website and Crutchfield that they are 4 ohm, everyone says they are 2.7 (or so) ohm. What am I missing?
Can I wire those in parallel or series with a pair of Hertz to work with an Arc 2 channel?
Thanks.
Can I wire those in parallel or series with a pair of Hertz to work with an Arc 2 channel?
Thanks.
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
they are not 4 ohm.. they are actually 2.7 ohm speakers.
Which Arc amp and which hertz speakers do you currently have?
Which Arc amp and which hertz speakers do you currently have?
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Road Master
Joined: Jun 2007
Posts: 1,092
Likes: 35
From: Fl
Polks come in several impedances, the DB and DXI lines are 4 ohm, the MM line is 2.7 ohm, and the MM Ultra Marine line is 4 ohms. Running 2.7 ohm MM speakers in parallel with 4 ohm Hertz speakers will give a final impedance of 1.6 ohms, which might cause problems with a 2 ohm stable amp. Best to call the manufacturer to confirm that you won't overstress the amp.