Boat system, very basic.
Printed From: the12volt.com
Forum Name: Marine Electronics
Forum Discription: Boat Stereos, Security, Navigation, Lights, Switches, Gauges, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=26595
Printed Date: April 26, 2024 at 4:13 PM
Topic: Boat system, very basic.
Posted By: dontnojack
Subject: Boat system, very basic.
Date Posted: February 16, 2004 at 7:21 PM
I am very new to this...bear with me. I have a boat that I am installing a sub in. I am currently running a 40wx4 pioneer cd deck with a Sony 1000w amp 2 ch. I have 2 6x9 explodes and 2- 6" explodes. I want to be able to crank it louder without the distortion and still have plenty of base. I purchased a 500w 10" fosgate sub in a sub enclosure. I want to know how to wire this into my current system. should I use the amp for the sub only and just use the deck for my 4 speakers? Are my speakers going to be not as loud if I do that, because i have no amp with them anymore? Can I wire in another amp for these speakers? One more ? What filters should I use for the smaller speakers and which one for the single sub? sorry for the questions, I hope someone is simple enough and kind enough to help me out. I not an idiot...but I do need help with car audio...obviously.
Replies:
Posted By: customsuburb
Date Posted: February 16, 2004 at 8:17 PM
If you want to keep your speakers from distorting(the 6 X 9s and 6.5 speakers) without an amp I would buy some bass blockers. This would keep bass from your coaxials so they wouldn't distort and give your cd player's amplifier an easier load to power. I would then power your coaxials with your pioneer deck. Then use the 2 channel amp with your sub in bridged mode. If you post up or Private Message me the specs of the sub and amp then I could give you more detailed information about how to set it up. https://www.crutchfield.com/cgi-bin/S-PMll1OhF8Vw/ProdView.asp?s=0&c=11&g=761&I=127BB150A2&o=m&a=0&cc=01&avf=N
Posted By: dontnojack
Date Posted: February 16, 2004 at 8:44 PM
so you are saying to use the sony explode 1000 watt amp for the fosgate 500 watt sub (10"), and connect the four speakers to the cd player directly using the bass blockers. I was sold some Speaker Savers as bass blockers:(200hz @ 4 ohms) non-polar 10% capacitor. I also got some 6x9 speaker enclosures so that I can set them out on the open bow when I am at the beach. Are these OK to use? I can't read any info off of the sub. It came in the enclosure from best buy. The info isn't on the magnet either. I tried looking in the enclosure with an inspection light. The speakers are all standard sony explodes from Sears as well as the 1000w amp. on another post I saw where this amp puts out 185 watts per channel RMS.
-1000w sony explode amp 2 channel
-2- 6.5 explodes
-2- 6x9 explodes
-1 - 10" fosgate sub
pioneer 40wX4 cd player.
I'm not sure what you mean by coaxials. or "cd player's amp" vs "powering my coaxials with my pioneer deck."
I am afraid of losing too much volume by taking the sub away from my 6x9's and 6.5's. In a boat, you lose a lot of volume in the air. Can I run another amp to power the smaller speakers or would this be a waist of money?
Posted By: customsuburb
Date Posted: February 16, 2004 at 9:12 PM
Sorry if i confused you. the CD player's amp I was referring to is your pioneer cd player's amp. Coaxials are speakers like your that have a tweeter mounted on top of a woofer(your 6.5" and 6 X 9 speakers). I would use an external amp for your Sony speakers. Is your Rockford Sub take 500 watts RMS or 500 watts max? This is very important, because if its an RMS rating then your sony amp would be fine for it. If the Rockford sub only takes 500 watts max then I think the sony amp would be too much power for just one sub. Ask the people you bought it from for answers. I would reccomend buying another Rockford sub if that is the amps RMS to use with the sub you have right now(which should give you the extra volume you would need on a boat). I still need to know the modle number of your amp though. this way I can look up its specs so I know if it really does output 185 watts RMS. To power those sony speakers I would use an MTX Thunder6304( if you buy off of crutchfield.com you save $220 on it right now) or a US Acoustics USB-4065 (this is a good inexpensive amp). The MTX would give you 40 watts X 4 RMS which should drive those speakers well and the US Acoustics would give you 65 watts X 4 which would power them even better. I wont be on untill around tommorrow afternoon so Personal Message me or Post the specs if want someone else to answer for you.
Posted By: customsuburb
Date Posted: February 16, 2004 at 9:15 PM
I just read your Private Message right after I posted my last reply. yes you can use the output to give another amp a signal and leave the bass boost alone probobly. Do a search on this site for gain settings to learn how to set the knob that say -6 to 3 volts. It dosnt say a modle number on the bottom of your amp? If it does then look on somewhere like google for your amps specs or take it to the place you bought it from and they should tell you its information. If you do take it in make sure to get the RMS power rating. Same for your sub.
Posted By: dontnojack
Date Posted: February 16, 2004 at 10:22 PM
I will check on these things and let you know. Thanks so much for your help so far. I had the model # right in front of me on my notes from when I went out in my boat and checked. It is a a XM-2165 GTX. Is this the number you are looking for? I'll call best buy on the sub specs. Thanks again. J.
Posted By: dontnojack
Date Posted: February 16, 2004 at 10:40 PM
I found my sub on crutchfield.com. The way it looks, my model number is HE-RFP4810. It's an 8 ohm sub (what does that mean to me and my setup?) freq resp. 32-200HZ, power is only 50-200watts RMS. sens. 85.5.
Posted By: auex
Date Posted: February 16, 2004 at 10:43 PM
You also need to take the fact that this is more like home audio (open air) when it comes time to build an enclosure. Also, it is fine to use a 1000 watt amp on a 500 watt sub, just make sure that you adjust the gains PROPERLY. Distortion kills speakers, NOT power.
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Posted By: dontnojack
Date Posted: February 16, 2004 at 10:45 PM
It may also be the HE_RFP4410 which is a 4 ohm speaker. I'll have to call and find out. I don't know how they have it put into this enclosure. It looks like it's in there pretty good, to get it out and look at the numbers.
Posted By: dontnojack
Date Posted: February 16, 2004 at 10:59 PM
I found the receipt, it is an 8 ohm RFP4810 sub. not the 4410.
Posted By: forbidden
Date Posted: February 17, 2004 at 12:40 PM
Take the sub back, it is not the right sub for your system, it will result in half of the available power to be available. It is best used when you have two or more drivers matched to a specific amp. They should have sold you a 4 ohm driver. I also would take back the box, not that it is bad but more due to the environment that it is going into. An open air boat loses output at an exponential rate due to the fact that there is nothing to contain the sound pressure generated. I would recommend a properly designed ported enclosure for your sub choice. This will max out the output for you to help out as best it can. Your 6x9 boxes will work fine if you want to move the speakers around. For the Xplod speakers that you have, bass blockers would work fine but a proper 4 channel amp is a much much better choice. Make sure it is a minimum of 50w x4 rms @ 4 ohm. The amp choice is up to you. If I had a boat I would probably not use a Sony amp myself. A better build quality and superior warranty is what I would be shopping for, again due to the environement that it will be mounted in. I would consider Planet Audio for their american built amplifiers with a 5 year warranty. Not trying to pooh pooh the great advice that you received from customsuberb, just offer a little more insight. My stores are both Oceanside, we see our share of boats and there are some things that I just won't do in them. I would use an amp on your Xplod speakers as it is a real amp, not a peak power head unit that has to work overtime to try and keep up with the sub and keep up eith the loss of sound due to the listening location. It will also use a far superior crossover to protect the speakers from damage. It will play much louder and cleaner. It will probably last longer. ------------- Top Secret, I can tell you but then my wife will kill me.
Posted By: dontnojack
Date Posted: February 17, 2004 at 1:49 PM
Thanks for the info. recommendations on a reasonbly priced 10" sub to use with this amp? I am going to get a new amp for the Explodes. (4 channel)
Posted By: forbidden
Date Posted: February 17, 2004 at 1:54 PM
A sub with warranty longer than 1 year that works in a ported enclusure that is rated at 4 ohms, single voice coil. I'll have a look around at some recommendations and post back later.
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Top Secret, I can tell you but then my wife will kill me.
Posted By: dontnojack
Date Posted: February 17, 2004 at 3:01 PM
thanks. J.
Posted By: DYohn
Date Posted: February 17, 2004 at 3:19 PM
auex]A wrote:
so, it is fine to use a 1000 watt amp on a 500 watt sub, just make sure that you adjust the gains PROPERLY. Distortion kills speakers, NOT power.
Wow. While it is certainly true that a dirty amp (lots of noise and distortion) can cause damage to a speaker over time (although it is not the distortion itself that causes the damage, but the current excursions that distortion and noise can cause) what you state here is patently untrue. Talk to any guitar player about how much distortion you can throw at a loudspeaker. It is a simple matter of physics and electrical laws that too much current causes too much heat, and that is what kills loudspeakers. Send 1000 watts to a loudspeaker rated for 500 watts and it will, either immediately in the worst case condition or over time in the best case condition, cause it to fail. Period.
Posted By: jeffchilcott
Date Posted: February 17, 2004 at 4:50 PM
look into some of the kicker marine equipment, They claim they most equipment is water resistane, this could be a plus if wet poeple or orject move on and off the boat, like i would assume
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Posted By: customsuburb
Date Posted: February 17, 2004 at 7:40 PM
Kicker does make a marine sub. Try two of these 4 ohm subs with a Planet Audio mono amp like forbidden suggested. I'm sure there are better marine subs but these dont look to bad. You can even get them with a water-proof grille. I would try to find a mono amp from Planet Audio that outputs around 300 watts RMS at most. These Kicker subs have a low power handling level. If you cant find anything from planet audio then try Rockford Fosgate's Punch P3001 mono amp. https://www.crutchfield.com/S-tzeQARGxY0j/cgi-bin/ProdView.asp?a=0&s=0&cc=01&g=130&id=features_and_specs&i=575P3001 https://www.crutchfield.com/cgi-bin/S-tzeQARGxY0j/ProdView.asp?s=0&c=10&g=67600&I=20603KM10&o=m&a=0&cc=01&avf=N https://www.crutchfield.com/S-tzeQARGxY0j/cgi-bin/ProdView.asp?s=0&cc=01&i=20603GR10M&o=&a=0
Posted By: dontnojack
Date Posted: February 17, 2004 at 7:59 PM
these look like they would work pretty good. The main reason I got the xplode coaxial's is because of the water restistance, not necessarily the performance. But after I started messing with the system, I wanted better and better performance. Just like snowmobiling and boating....never satisfied!
Posted By: customsuburb
Date Posted: February 17, 2004 at 8:10 PM
Posted By: dontnojack
Date Posted: February 17, 2004 at 8:24 PM
thanks guys!
Posted By: customsuburb
Date Posted: February 17, 2004 at 8:31 PM
One more thing before you go out and buy amps. Make sure your boat's electrical system can handle all of the aftermarket stuff you want to add to it. You probobly won't have a problem, but just in case.
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