Wake 101
Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
WakeWorld Home
Email Password
Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through March 18, 2009

Thread Tools Display Modes
Old     (hornsfan)      Join Date: Mar 2009       03-12-2009, 7:03 AM Reply   
All right so I'm trying to set-up a system on a limited budget. First time owning a boat and don't know how much time and money I want/will be able to invest. Here is what I have so far and what I was planning to do, and wanted some opinions.

Crunch P900.4 (yes I know this is a low end amp but this is what I have, for now)
4 x 115 @ 4-Ohms
4 x 225 @ 2-Ohms
2 x 450 @ 4-Ohms
(more detailed info here

Interior speakers:
(4) Polk db651
Electrical Overall Frequency Response 35Hz-22kHz
Nominal Impedance 4 ohms
Power Handling (continuous) 60 w
Power Handling (peak) 180 w
Efficiency 92 dB
(more detailed info here

Tower speakers:
Kicker KMT6's (based on the other thread I think most are familiar with these speakers)
Max Rec Amplifier Power (watts PEAK/RMS)* 300/150
Sensitivity (dB 1w/1m) 93
Frequency Response (Hz) 50-21k
(more detailed info here

Okay so here is how I was planning to wire this all off the 4-ch amp. Each pair of the Polk's I would wire in series from Ch1 and Ch2 of the amp (like this, so Ch1/2 would be at 2 ohms and then the KMT6 toer speakers I would wire normally into CH3/4, but I was thinking of running these in series too in bridged mode from Ch3/4.

Thoughts? At this point I'm going for loud, eventually I'll need to add a sub.
Old     (jonyb)      Join Date: Nov 2008       03-12-2009, 7:38 AM Reply   
When you wire speakers in series, the impedance goes up. You should be intending to say that you're gonna wire those in parallel.
Old     (ncboarderboy)      Join Date: Aug 2007       03-12-2009, 7:39 AM Reply   
you sould spend on a seperate amp for the tower speakers? If so you could wire the in boats like you were going to and a sub bridged to 2 channels and the tower speakers would get better power off a seperate amp which matched it better.
Old     (hornsfan)      Join Date: Mar 2009       03-12-2009, 8:05 AM Reply   
john i meant parallel
Old     (philwsailz)      Join Date: Feb 2009       03-12-2009, 8:26 AM Reply   

Don't parallel the KMT6's onto half of that amp in bridge mode. I do not want to go off and write a book, (which I often do) but if you do it, each amp channel will effectively see about a 3/4-ohm load; almost a dead short. The amp will not last long...

The other funny thing:
Say you DO series wire the KMT6 speakers and connect them to a bridged amp half. You will not get any more power out of the amp than if you connect one KMT6 to each amp channel.

I have to laugh, and please nobody get offended, but I see way too many systems where someone has gone in and bridged something without understanding what it does and how it works... Bridging makes sense in some few instances, but too often I see someone trying to do some crazy bridge scheme thinking that bridging always makes more power... It usually doesn't... Almost every time, if you want more power you need a bigger amp, not some goofy wiring method that "magically" creates more power...

Wire the KMT6's up in a normal stereo way, one speaker per amp channel... that will give you the max power to those speakers.

Then your in-boat speakers... Yes, the amp is 2-ohm stable, so you will be fine wiring two speakers in parallel on the left side of the boat, and then two speakers in parallel for the right side of the boat. That will work fine!

Good luck and let us know!

Old     (hornsfan)      Join Date: Mar 2009       03-12-2009, 8:37 AM Reply   
Thanks Phil.

Hooking them up this weekend, I'll let you know how they sound.
Old     (vortech347)      Join Date: Aug 2000       03-12-2009, 12:30 PM Reply   
Do not bridge the KMT6's. They are 3ohm speakers and will show that load to the amp.

They are a good sounding budget speaker that get pretty loud too.


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

All times are GMT -7. The time now is 9:25 AM.

Home   Articles   Pics/Video   Gear   Wake 101   Events   Community   Forums   Classifieds   Contests   Shop   Search
Wake World Home


© 2016 eWake, Inc.    
Advertise    |    Contact    |    Terms of Use    |    Privacy Policy    |    Report Abuse    |    Conduct    |    About Us