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spmpdr 
Copper - Posts: 456
Copper spacespace
Joined: March 22, 2009
Location: Oregon, United States
Posted: July 09, 2009 at 10:30 AM / IP Logged  
I currently run 2 12" re audio sr subs 4ohm dvc off of a memphis 500wattrms monoblock.I have them wired as if they were svc 4ohm to give them a 2ohm load.Wich would give them 250 watts rms per sub.I am thinking of buying a new amp capable of powering the subs 1200watts total(600watts per sub).Now my question(s)
option A)Buy another 500 watt monoblock ,wire them one amp/one sub,with a 2ohm load.I then would be running three amps (2) 500x1/ (1)500x4. This is also the cheapest way that I have found but im not necessarily looking for cheapest.
optionB) Buy a 2 channel 1200watts rms.Sell my memphis monoblock and wire them the same way as option A.This is the more expensive way but the simplest as far as install goes.
Wich would you recommend? , What are the technical pros /cons of both setups? If I bought a 2 channel should I make sure its 1200watts rms @ 4ohms for better SQ and less work on the amp?thanks any other options are greatly appreciated.    
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i am an idiot 
Platinum - Posts: 13,717
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 09, 2009 at 11:31 AM / IP Logged  
You have a 1 channel amp, if you have them wired to a 4 ohm configuration, the amp is seeing a 4 ohm load.  You are thinking about bridging a speaker on a 2 channel amp.  In that case, if you bridge  a 4 ohm driver on a stereo amplifier.  That is the same exact load as a 2 Ohm stereo load.   So I think that is where you are coming up with it is wired at 4 so it is seeing 2. 
spmpdr 
Copper - Posts: 456
Copper spacespace
Joined: March 22, 2009
Location: Oregon, United States
Posted: July 09, 2009 at 11:55 AM / IP Logged  
Option 1 (parallel) = 2 ohm load
Speakers wired in parallel
Recommended Amplifier: Stable at 2 or 1 ohm mono
Two 4 ohm SVC Speakers = 2 ohm load
I have them wired like this currently so I am still getting a 4ohm load?
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DYohn 
Moderator - Posts: 10,741
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: July 09, 2009 at 12:22 PM / IP Logged  
... except that you say in your first post they are DVC subs.  Check the Subwoofer Wiring Options link in the left hand column.
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soundnsecurity 
Gold - Posts: 2,715
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Joined: November 10, 2008
Location: Louisiana, United States
Posted: July 09, 2009 at 1:01 PM / IP Logged  
if you just use one coil on each sub then you reduce the power handling of each sub.  so just keep that in mind when you are looking for another amp to give them more power
spmpdr 
Copper - Posts: 456
Copper spacespace
Joined: March 22, 2009
Location: Oregon, United States
Posted: July 10, 2009 at 6:19 PM / IP Logged  
that is just how they are wired,I would like to wire them using both vc on both subs that is why im asking about the amps in the first place.Should i buy a 1200 watt 2 channel or another monoblock to wire them using both vc's on both subs what is the best option?
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soundnsecurity 
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Joined: November 10, 2008
Location: Louisiana, United States
Posted: July 10, 2009 at 7:59 PM / IP Logged  

i would go for the 1200 watt monoblock that is 1 ohm stable. sound quality will come mostly from the enclosure you but the subs in. it helps a little bit if you are not running the amp at its max stability but if you have a good enough amp then you shouldn't have any problems. I run my autotek at 1 ohm all day and havent had any issues. it is better on the amp to not run it at 1 ohm but an amp that will give you 1200 watts at 4 ohms will be a little pricy, if you want to spend the money then go for it.


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