ohm loads
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=114557
Printed Date: May 03, 2024 at 8:56 AM
Topic: ohm loads
Posted By: nissan370z
Subject: ohm loads
Date Posted: June 18, 2009 at 11:03 PM
i need help with ohm loads.. i want either 1 or 2 speakers but i want to push the amp to its limit so say i get a 4000watt amp the rms is roughly 2000watts... at 1 ohm or something.. what do i get one 12'' 2ohm dual voice coil or two 12'' 2ohm dual voice coils or one 12' 4ohm dual or two 12'' 4ohm dual.. maybe someone has a list or a chart on how it works.. ?
Replies:
Posted By: haemphyst
Date Posted: June 19, 2009 at 12:31 AM
ALL loads are in ohms. "Ohm loads" is like saying "VIN number" - which is "vehicle identification number number". Stop it. You need some help with load calculations.
Now... Why do you feel you have to "push an amp to it's limits"?
Then... It's going to depend on whether it is a stereo amp or a mono amp. How many drivers are you wanting to use? What is your ultimate goal - SPL or SQ? You need to decide, before we can help you.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: stevdart
Date Posted: June 19, 2009 at 12:59 AM
It's SPL...duh! 
The word, nissan, is impedance. ------------- Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
Posted By: ianarian
Date Posted: June 19, 2009 at 2:20 AM
Did I miss something? ....4000w--you've already done the alt, batt, wire, conn.,?
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This is what I do for FUN!
Posted By: hurleyloser
Date Posted: June 19, 2009 at 6:06 AM
https://www.the12volt.com/caraudio/woofer_configurations.asp
I'll also reiterate what others before have said, what is your ultimate goal, and if you really plan on getting the most out of your amp, be sure to upgrade the big 3, along with your alternator and battery first.
I suggest taking it into a REPUTABLE shop to see what's best for you.
For your education, consider the various resources on this website regarding ohms law and voice coils.
two 4ohm DVC subs will give you about a 1ohm load wired in parallel or one 2ohm DVC sub wired in parellel will give you a similar result.
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MECP Master Certified Technician
ASE A6 Certified Technician
Posted By: nissan370z
Date Posted: June 19, 2009 at 6:46 PM
spl.. well i figured it out.. i want either one 12'' dual 2ohm or two 12" dual 4ohm and i want to run about a 2000watt amp.. so far the ones i like is the mojo series from memphis and the rockford series.. what do you think? im a noob at this but im trying to learn
Posted By: nissan370z
Date Posted: June 19, 2009 at 6:50 PM
another question.. if i run 2000watts rms.. what do i need to do with the alternator just upgrade to 1 better one? and another battery? i just want to run a solid system that will last long too..
Posted By: tommy...
Date Posted: June 19, 2009 at 8:06 PM
nissan370z wrote:
another question.. if i run 2000watts rms.. what do i need to do with the alternator just upgrade to 1 better one? and another battery? i just want to run a solid system that will last long too..
Yes on the upgrades...Start w/ The Big Three...You said "solid system that will last long"...What can be pushed to there limits and last long...??? Not Much...!!! Theres lots of stuff out there...You dont necessarily need a million watts(but if it is SPL your going for and 2000W...As stated Big 3,Battery,Alternator,custom enclosure and some really big power wire is in your future) ------------- M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!
Posted By: nissan370z
Date Posted: June 19, 2009 at 9:53 PM
ok so if i go with a 2000w amp and 2 subs that can handle more then that with out under powering them? would they still have a good life?
Posted By: nissan370z
Date Posted: June 19, 2009 at 9:58 PM
can i run a spl speaker like the pioneer TS-W5102SPL on a daily use? or they arent built for that?
Posted By: tommy...
Date Posted: June 20, 2009 at 8:51 AM
Soooo...Stupid loud bass is what you want...? So sorry...I know nothing about pioneer subs...Whats your price range...Would enable us to give some recommendations...Instead of one here ,there, type of thing...There are some subs out that dont require alot of power and sound great...IE , Cerwin Vega...Memphis...! Is this going in a Nissan...?
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M.E.C.P & First-Class
Go slow and drink lots of water...Procrastinators' Unite...Tomorrow!
Posted By: ianarian
Date Posted: June 20, 2009 at 10:19 AM
If you dont have a brand preference. Good! Its probably better. Your brand will be what your system is worth to you. The more you pay, the stronger you play.
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This is what I do for FUN!
Posted By: haemphyst
Date Posted: June 20, 2009 at 11:35 AM
nissan370z wrote:
ok so if i go with a 2000w amp and 2 subs that can handle more then that with out under powering them? would they still have a good life?
It is absolutely impossible to "underpower". If you have an amplifier rated 2000 watts into a given load, provide that load, and be sure it is rated TOTAL at 2000 watts or a bit more. Set your gains correctly, NEVER abuse the system, and everything will last, no problem. ------------- It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: nissan370z
Date Posted: June 20, 2009 at 12:42 PM
its goin in my work car.. which is an acura 3.0cl.. i work offshore so money isnt a problem.. well so far i like the alpine type x dual 4ohm (2) and probably a rockfordfosgate bd2000.1 unless you recommend another amp? ive seen pioneer that has a pretty good amp too and powerbass.. i also was looking at some ma audio competition speakers but i dont know if they are for every day use.. ill probably go with the alpines someone asked what my price range is.. i guess between 1000-2500 $
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