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10-16-2016, 06:34 PM #1
Replacing cabin speakers different ohms
I currently have 6 kicker km613 (4ohm) cabin speakers being powered by a kicker zx200.4
I'm wanting to swap those speakers with 6 Polk MM651 (2ohm 100w/200w) speakers.
Will I have to make any other changes or is it just plug and play?2008 Mobius LSV
1100#er's in the lockers
ski locker sac
IBS
Johnson reversibles
3 vent heater (which my family loves)
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10-16-2016, 07:02 PM #2
2.7 ohms. Should be fine.
I added them to my pontoon sound greatA Day at the Lake...Priceless
A Day in Powder...Endless
Joe V
2012 Möbius XLV~ Loaded & Exiled
2007 Outback V ~ sold
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10-16-2016, 07:13 PM #3
Hey Ninedriver, I did mine last year on our '14 Mondo and was recommended to go for the MM651UM's as they are 4ohms.
Did the cabins and bow speakers and worked really well on the Kicker 200.4.
You'll get a lot more bass from them (although not like having a sub) and musically it will be more pleasing based from my experience.
If you have the Sony head unit you'll find that playing around with its settings sufficient to put a smile on your face, I actually had to turn things down once I was done to suit my taste and received quite a few compliments while out. Good luck with the install.
I should add that the cabin speaker pairs were wired in parallel, i.e lhs 2 were wired in parallel for one channel of the amp and the rhs the same for the other channel.
I was advised by members here to go for the MM651UM's as they are 4 ohm impedance and would be kinder to the Kicker Amp. The 2.7 ohms may work presenting a 1.3ohm load to the amp but it didn't seem to be worth the risk considering my time and $'s. For me it was plug and play with these speakers.
Cheers BruceRLast edited by bjrow; 10-16-2016 at 07:19 PM.
Bruce
2014 Moomba Mondo
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10-16-2016, 07:36 PM #4
Found my thread when asking about upgrading the speakers, may be useful, maybe not.....
https://forum.moomba.com/showthread....651-s-worth-it
Cheers BruceRBruce
2014 Moomba Mondo
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10-16-2016, 09:18 PM #5
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06-21-2017, 07:12 PM #6
Time to resurrect an old thread... Unfortunately, I'm just now getting to my install
So, just so I'm clear. Yes, my kicker zx200.4 is currently wired like MLA says with one speaker wire (+,-) going from my amp to my one port bow speaker and one speaker wire (+,-) going from my amp to my one starboard bow speaker. Then there is one speaker wire (+,-) from my amp that is branched off into a parallel set of speaker wires that go to my 2 port cabin speakers and the last speaker wire from my amp is also branched off into a parallel set of speaker wires going to my 2 starboard cabin speakers. Again, those 6 cabin speakers are kicker km613 (4ohm). With this current setup, does this mean that my bow speakers are each driving one channel from the amp at 4 ohms? And the 2 cabin speakers per side in parallel are driving the amp at 2 ohms?
And now on to the upgrade to 6 Polk MM651 (2 ohm) speakers. If I just swap out the bow speakers, how will the new 2 ohm speaker affect the 4 ohm channel from the amp?
And, by changing my 2 pair of cabin speakers from parallel to series, how does that impact the amp? I'm assuming the above will be my new correct set up??
Thanks
Steve2008 Mobius LSV
1100#er's in the lockers
ski locker sac
IBS
Johnson reversibles
3 vent heater (which my family loves)
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06-21-2017, 07:41 PM #7
if you do it as you say, then your bow will run at 50 rms a speaker, no ill effects to amp. but you will drop down to 35 rms per pair on the cabin speakers , but there will be no ill effect, that would be the best way to do it with what you have, keeps everything in check with what that amp can handle.to clarify, keep bows the same but change cabins from parallel to series hope it helps
Last edited by stevemarich; 06-21-2017 at 07:55 PM.
2017 Craz surf auto wake
1140 # rears wet sounds
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06-21-2017, 08:18 PM #8With this current setup, does this mean that my bow speakers are each driving one channel from the amp at 4 ohms? And the 2 cabin speakers per side in parallel are driving the amp at 2 ohms?
And now on to the upgrade to 6 Polk MM651 (2 ohm) speakers. If I just swap out the bow speakers, how will the new 2 ohm speaker affect the 4 ohm channel from the amp?
And, by changing my 2 pair of cabin speakers from parallel to series, how does that impact the amp?
So, lets say the 2 ohm output is 50W rms. With two speakers, the two speakers each net 25W. And if the 4 ohm output is 25W, now each of your speaker nets 12W rms.
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06-21-2017, 08:44 PM #9
Model ZX200.4
RMS Power in Watts, all channels driven
@ 14.4 Volts, 4Ω stereo, ≤ 1% THD+N 35 x 4
@ 2Ω stereo, ≤ 1% THD+N 50 x 4
@ 4Ω mono, ≤ 1% THD+N 100 x 2
Frequency Response, ± 0.5 dB: 20 Hz - 20 kHz
Signal-to-Noise Ratio: >95 dB, a-weighted, re: rated power
Input Sensitivity: 125 mV - 5 V low level
250 mV - 10 V high level
Electronic Crossover: HI, LO or OFF (bypass),
fixed @ 80 Hz, 12 dB2017 Craz surf auto wake
1140 # rears wet sounds