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john_nading 
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Posted: April 12, 2005 at 1:39 PM / IP Logged  
i have a rockford fosgate p3001 mono block 2 channel class d amp(none bridgable)... i just bought 2 12" Volfenhag subs with dual voice coils... i have no clue about ohms.. how many ohms do i want to go to each channel for a lot of output and extreme lows? that is my big question... but my other one os how should i be wiring the coils together? i think i know how to wire them so i will get the disired amount of ohms but if anyone will give their inout on these to topics it will be appreciated...
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DYohn 
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Joined: April 22, 2003
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Posted: April 12, 2005 at 1:52 PM / IP Logged  
Your amp is MONO which means it has one channel of output.  It may have two sets of connectors, but they are paralleled together inside the amp.  Your amplifier is stable to 2-ohms net load which means you cannot safely connect any load lower than that to the amp.  You say the woofers you purchased are DVC.  How many ohms per voice coil?
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john_nading 
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Posted: April 12, 2005 at 7:16 PM / IP Logged  

Voice Coils: 4 Layer Dual 4 Ohm... I have a paper that i got with my amp says its rated power is 300 w rms X 1 @ 2 ohms...it has 235 rms watts per channel @ 4 ohms < 1% THD+N...s/n >80 dBA (reference: 1 watt into 4 ohms).... 389 total rms watts @ 2 ohms < 1% THD+N all channels combined  the underline info is straight for sheet i got when my amp was tested.. i dont know if it helps but it might... do you need any other specifics?

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forbidden 
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Posted: April 12, 2005 at 8:38 PM / IP Logged  

To safely use these subs with this amp wire the subs in this method ONLY.

Wiring Option #2

ohm's question -- posted image.

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DYohn 
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Joined: April 22, 2003
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Posted: April 12, 2005 at 8:40 PM / IP Logged  

Nope, that's great.  You will need to accomplish a series-parallel wiring to create a 4-ohm load on the amp.  Like this:

ohm's question -- posted image.

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Posted: April 12, 2005 at 8:43 PM / IP Logged  
Don't look at his diagram, mine looks nicer. ohm's question -- posted image.
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john_nading 
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Posted: April 12, 2005 at 8:51 PM / IP Logged  

DYohn.... the diagram shows only using one "channel" should i wire as though i am wiring one dvc in each channel? ... i have been told that i cannot bridge.. so should i wire as show or would it be better to wire seperately?

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john_nading 
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Posted: April 12, 2005 at 8:54 PM / IP Logged  

haha forbidden... i have that web page one my favorites already... im trying to understand it...and find out if i should wire subs together or seperate..

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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: April 12, 2005 at 9:00 PM / IP Logged  

The Rockford Fosgate Punch P3001 only has ONE channel.  It does not matter which + and - connection on the amp you use.

And you're right, Rob, your's is nicer.  Mine is bigger, though.  ohm's question -- posted image.

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john_nading 
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Posted: April 12, 2005 at 9:07 PM / IP Logged  
so should i use the other set of connectors at all?
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