sub and amp
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=114098
Printed Date: May 29, 2024 at 3:05 AM
Topic: sub and amp
Posted By: nickrusk
Subject: sub and amp
Date Posted: May 29, 2009 at 3:50 PM
i just bought a 12" alpine DVC 4ohm sub and a alpine 1000W rms at 2ohm and 600W at 4ohm how do i wire it? right now i have it ran in series is that safe to run?or should i replace the amp with the alpine 500W rms at 2ohm mono and run it parallel?
Replies:
Posted By: icearrow6
Date Posted: May 29, 2009 at 4:03 PM
Need more info...
Which model ALPINE did you buy? Both the amp and sub.
Anyways, if its DVC and 4ohm per coil, you can either wire it in series (8ohm load), or in Parallel (2ohm load).
Also, how many woofers? from what you wrote it seems you only got one.
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Posted By: haemphyst
Date Posted: May 29, 2009 at 4:03 PM
Series is fine.
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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: icearrow6
Date Posted: May 29, 2009 at 4:08 PM
haemphyst wrote:
Series is fine.
LOL. i like your laid back approach.
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Posted By: nickrusk
Date Posted: May 29, 2009 at 4:40 PM
yes it's just the one sub, a SWR-1242D , the amp is also alpine the model is MRP-M1000, would it be worth adding 1 more type-r?
Posted By: nickrusk
Date Posted: May 29, 2009 at 4:48 PM
on the amp i have the bass boost at 6, and the gain at 1, when i turn the HU around half way, i hear a clipping noise out of the sub, on some notes, and the sub sounds ok, just not loud,not like it should be (I only hear it with the trunk opened) any help? is it hurting the sub? The HU is set to Flat
Posted By: icearrow6
Date Posted: May 29, 2009 at 5:08 PM
Wiring the woofer in parallel will let the amp give you the most power....however, your woofer won't be able handle 1000W.
From the specs sheet its not rated at 1ohm, so having a second woofer will only give you 600W (4 ohm load).
I suggest if you can, getting two type R, but DUAL 2ohm. That way you can match the RMS output of the amp and the RMS handling of the woofers.
Confused yet?
Basically, mismatched setup...
If you wire the single in parallel, and set your gains properly you should be fine...
GAINs are NOT volume knobs-------------
Posted By: nickrusk
Date Posted: May 29, 2009 at 5:15 PM
thank you for your help, would replacing the amp with a alpine MRP-M500 witch is 500w@2ohm's, and run it parallel for a 2ohm load work better?
Posted By: nickrusk
Date Posted: May 29, 2009 at 5:45 PM
or keep the amp and go with 4 alpine SWE-1243 SVC 250W@4ohm rms and run them at series/parallel which will make it a 4ohm load off the amp which is 600W, i am going for SPL not SQ
Posted By: icearrow6
Date Posted: May 29, 2009 at 7:17 PM
SPL?
ok well, get another 4ohm type R . wire them in parallel/ parallel. You'll get 1ohm load.
And get a 1000W RMS amp, class D 1ohm stable. that will do you some justice.
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Posted By: haemphyst
Date Posted: May 29, 2009 at 7:23 PM
icearrow6 wrote:
haemphyst wrote:
Series is fine.
LOL. i like your laid back approach.
My laid back approach is a perfect match. 8 ohms will have that amplifier making easily 300 to 400 WRMS, which the woofer is perfectly suited to handle.
Don't swap the amplifier, so if you want to later, you can add an additional woofer, and still have the power necessary to drive a pair.
Additionally, the amp running at 8 ohms will run cooler, run more efficiently, run with lower distortion, and last longer. Leave the woofer wired in series, and enjoy. It's a PERFECT combination, just the way you have it. ------------- 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: icearrow6
Date Posted: May 29, 2009 at 7:39 PM
I can't find specs on that alpine at 8ohms...thats all.
If you say it can make 300w RMS I believe you.
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Posted By: nickrusk
Date Posted: May 29, 2009 at 9:13 PM
thank yall for the help, my plan was to get another type-r and have them both ran to this amp, i thought i had it figured out befor i bought it, but i was wrong
Posted By: haemphyst
Date Posted: May 30, 2009 at 12:15 AM
icearrow6 wrote:
I can't find specs on that alpine at 8ohms...thats all.
If you say it can make 300w RMS I believe you.
What happens when you halve the impedance, meaning go from 4 ohms to 2 ohms? The power comes close to doubling, right? For example: from 600 watts at 4 ohms to 1000 watts at 2 ohms. Well the exact opposite will happen if you double the impedance, from 600 watts at 4 ohms to ABOUT 300 watts (easily) to 400 watts at 8 ohms.
You don't HAVE to see a published spec for a given impedance that is higher than a typical load... Ohm's Law, baby! It'll do all the work FOR you! ------------- 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."
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