View Full Version : help me with my stereo/amp problem

05-19-2012, 04:50 PM
So this winter i decided to redo my stereo(2002 x star).

i put a pair of NVS deviant tower speakers(4 speakers total) on the boat and was planing on powering each with this amp http://www.sonicelectronix.com/item_22574_Kenwood-KAC-9105D.html

I was going to use two amps, one per 2 speakers.

When i installed it i am only getting low range sounds out of the speakers. The amp is a class D monoblock, Im not sure if that is the issue as it wont play stereo??

Let me know if these amps will work for mids/ highs, or if these amps are going to be for my subs now...

I also have a kicker zx 850.2( was going to use for sub), and a kicker zx 650.4( in use for in boat speakers.)


05-19-2012, 04:57 PM
That is a sub amp, it only plays between 5 and 200 Hz. Looks like you a nice amp for the subs though.

05-19-2012, 05:03 PM
ya i wasnt thinking when i purchased them, I was looking for the Class D to keep the power consumption and especially heat down. Is there any way to wire the 2 amps together to make them stereo? thought i read it online?

Also do u think the kicker zx850.2 amp is enought for both of the deviants?


05-19-2012, 05:28 PM
I don't know of any way to bi-amp these speakers, you can do it with some high end house speakers. As for the Kicker zx850.2 amp, it would work, but you'd be underpowered 295 watts available compared to the 400-500 recommended. With two of the kickers you'd be able to bridge each one which puts you at 850 watts per module, you'd have to make sure you set the gain pretty low so you don't accidentally overpower them.

05-19-2012, 06:19 PM
To power the NVS Deviants to their potential you will need the entire RMS rated power. So that is 400 to 500 watts per side. You are looking for a 2-channel amplifier that will deliver an 'honest' 400 to 500 watts per channel into a stereo 4-ohm load or a 4-channel amplifier that will deliver an 'honest' 500 watts per each side bridged into two channels driving a 4-ohm load. That is a big amplifier in either case. The 'honest' part may disqualify a number of amplifiers.

Earmark Marine

05-20-2012, 01:17 AM
David- what kind of amps can you recommend that will get me my rms numbers on a budget,

Also 2 kenwood amps brand new for subs for sale!

05-20-2012, 08:39 AM
@bjw -

I wouldn't classify this as low budget, but take a look at the WetSounds Syn4 amp. Bridged into a 4 ohm load will get you a real 400 watts.


(edited, per Earmark David's correction immediately following this post)

05-20-2012, 12:17 PM
The Wetsounds Class H Syn4 bridged into a 4-ohm load for two times 400 watts as it won't do 2-ohms bridged and the speakers are 4-ohm.
The JL Audio HD750/1 fullrange Class D monoblock would be 375 watts per speaker but this is a strictly regulated amplifier which requires a power supply that is about 30 percent more robust than most and plays bigger than the specs.
The Hertz HDP4 is another fullrange Class D. Bridged into a 4-ohm load it delivers two times 500 watts.
The Arc Audio KS600.2 is 400 watts per side into a 4-ohm load.
Zapco should also have a really big Class AB two channel amplifier in that zone.
That is four options. I can't see powering these speakers with any less power or less in quality.

Earmark Marine