1300 rms amp to 400 rms sub
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=77113
Printed Date: May 13, 2024 at 11:58 AM
Topic: 1300 rms amp to 400 rms sub
Posted By: raiderfan52
Subject: 1300 rms amp to 400 rms sub
Date Posted: May 01, 2006 at 3:24 PM
i want to run this
infinity REF1211A 1200w class D amp
CEA Rated Yes
Power Output 854 watts RMS x 1 channel at 4 ohms and ¡Ü 1% THD + N 1300 watts RMS x 1 channel at 2 ohms, 14.4V supply and ¡Ü 1% THD + N
Signal-to-Noise Ratio 72 dBA (reference 1 watt into 4 ohms)
Dynamic Power 1516 watts at 2 ohms
Effective Damping Factor 6.357 at 4 ohms
Frequency Response (-3dB) 17Hz to 302Hz (-3dB)
Maximum Input Signal 5.7V
Maximum Sensitivity 260mV
Output Regulation .132 dB at 4 ohms
MSRP U.S. $ $574.95 with this Pushing a single Infinity Kappa Perfect 12dvq or 10 dvq same specs
Specifications
MSRP U.S. $: $444.95 each
Power Handling, RMS: 400 Watts
Power Handling, Peak: 1600 Watts
Frequency Response (¡À3dB): 25Hz - 400Hz
Mounting Depth: 7"
Impedance: 2 or 8 Ohms depending on wiring
Sensitivity: 92dB
i was wondering if this was to much for the sub? or is it possible to wire it at 8 ohm? would this amp be a better fit at 2 ohm. thanks General
CEA Rated Yes
Power Output 456 watts RMS x 1 channel at 4 ohms and ¡Ü 1% THD + N 657 watts RMS x 1 channel at 2 ohms, 14.4V supply and ¡Ü 1% THD + N
Signal-to-Noise Ratio 70 dBA (reference 1 watt into 4 ohms)
Dynamic Power 761 watts at 2 ohms
Effective Damping Factor 6.336 at 4 ohms
Frequency Response (-3dB) 17Hz - 251Hz
Maximum Input Signal 6V
Maximum Sensitivity 250mV
Output Regulation .179 dB at 4 ohms
MSRP U.S. $ $424.95 which is better 2,4 or 8 ohm i know you can only wire these subs at 2 and 8 but which in your opinion is better just in gerneral sence.
Replies:
Posted By: aznboi3644
Date Posted: May 01, 2006 at 5:04 PM
If your gonna use the REF1211A 1200w class D amp:
I would recommend that you wire the amp at an 8 ohm load. You can power a 100 watt rms sub with a 1000 watts rms amp. It just depends on your settings. Wiring at 2 ohms would be fine but when adjusting the settings on the amp, they may be more sensitive.
Just wire it up at 8 ohms. This should power that sub no problem. The sub's high sensitivity level doesn't require gobs of power to be loud.
Posted By: raiderfan52
Date Posted: May 02, 2006 at 1:25 AM
but if i wire them up at 8ohm on that 1200w ref1211a wouldn't the rms be like 427? would it be better to get the 611a model and run it a 2 ohm for 657 rms. i just want to know if im going to blow up my 500 dollar speaker by running a the 1211a.
Posted By: forbidden
Date Posted: May 02, 2006 at 1:37 AM
If you break the thermal barrier of the sub by using an amplifier too large, yes you will destroy the sub. If you break the mechanical barrier of the sub by using an amp too large, yes it will destroy the sub. Do not use this combination unless you want to be buying a new sub. If you are going to be adding a additional identical sub, then I would choose the single voice coil 4 ohm driver. You need to read this thread. https://www.the12volt.com/installbay/forum_posts.asp?tid=74226&PN=1 ------------- Top Secret, I can tell you but then my wife will kill me.
Posted By: haemphyst
Date Posted: May 02, 2006 at 8:56 AM
aznboi3644 wrote:
Just wire it up at 8 ohms. This should power that sub no problem. The sub's high sensitivity level doesn't require gobs of power to be loud.
Agreed here! Your amp (and I am referring to the 1211) will not make as much power, true, but it will still be pretty PERFECTLY matched to the power handling capability of the woofer, anyway. This fact, added to the lower distortion, lower heat production, increased damping (for control), increased life expectancy of the amp... Those all add up to make perfect sense. Use the 8 ohm wiring option, set your gain PROPERLY, and be done with 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: kirktcashalini
Date Posted: May 02, 2006 at 12:06 PM
Dude where do you live, I picked up my Kappas Perfect 12.1Ds for like 130 locally.... The only difference between the VQ ones is the Q is adjustable, which wont really matter if you build your box to spec anyways.
Dont pay that kind of money for those subs, or amp... Unless you live in antartica or something.
-------------
99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)
Posted By: raiderfan52
Date Posted: May 02, 2006 at 1:17 PM
well im not paying retail i get the sub for 118 before shipping and the amp for 250, the thing is its a limited time thing so if blow my sub with the combo then i will get stuck paying fo it later. so in gernernal what are the advantages in wiring it up a 8 ohm oppossed to 2 ohm. i live in Vegas well maybe i should get the 12ds i would only pay 70 for it. The thing is all this stuff is going into my girls 2006 mustang and she only wants one sub just to add little bass but i know when she hears it hit she will want it louder and to her dismay it will hit really hard.
Posted By: haemphyst
Date Posted: May 02, 2006 at 5:44 PM
raiderfan52 wrote:
well im not paying retail i get the sub for 118 before shipping and the amp for 250, the thing is its a limited time thing so if blow my sub with the combo then i will get stuck paying fo it later. so in gernernal what are the advantages in wiring it up a 8 ohm oppossed to 2 ohm. i live in Vegas well maybe i should get the 12ds i would only pay 70 for it. The thing is all this stuff is going into my girls 2006 mustang and she only wants one sub just to add little bass but i know when she hears it hit she will want it louder and to her dismay it will hit really hard.
(Did you read my post before?)
Benefits follow:
haemphyst wrote:
aznboi3644 wrote:
Just wire it up at 8 ohms. This should power that sub no problem. The sub's high sensitivity level doesn't require gobs of power to be loud.
Agreed here! Your amp (and I am referring to the 1211) will not make as much power, true, but it will still be pretty PERFECTLY matched to the power handling capability of the woofer, anyway. This fact, added to the lower distortion, lower heat production, increased damping (for control), increased life expectancy of the amp... Those all add up to make perfect sense. Use the 8 ohm wiring option, set your gain PROPERLY, and be done with 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: raiderfan52
Date Posted: May 03, 2006 at 3:14 AM
thanks you guys for all the help going to get the 1211a at 8 ohm.
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