connecting subs to amps?

1381 Views 7 Replies 3 Participants Last post by Roan, Apr 29, 2004

titanium3

Discussion Starter · Apr 28, 2004

ok i searched and read a lot of threads on this topic but i still have a few questions...

i'll first give you the background... i'm planing on getting a complete system for my 3... i have to buy all the parts from bestbuy up her in canada becasue i can get them at cost +10%... therefore my choices are limited... i'm building a single 10" custom ported box and doing the installation myself...

the sub i'm gonna use is a Rockford Fosgate Punch Stage 3... its a dual voice coil sub and it comes in either 2 or 4 ohm configurations... my first questions is which one should i get (2 or 4ohm) if my choice of amps is as follows...

Rockford Fosgate Punch P3001 (1 channel)
Rockford Fosgate Punch P3002 (2 channel bridgable)
click here for a comarison chart of the two amps

i'm a little confused because the sub has a dual voice coil and i don'l know if that means i have to connect them separately or if they share the same terminal... also i don't know if its better to run at 2 ohms or 4...

i found the following picture at one of the websites refered to by a thread on the tipic...

what i gather from this picture is that the dual 4 owm sub would require an amp running at 2 ohms and the dual 2 ohm sub would require an amp running at 1 ohm... is this right?

any input is appreciated... some links to some sites where i can learn more about this tuff would be great too...

thanks

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JohnA

· #2 · Apr 28, 2004

if you were to get the dual 2ohm version you can wire it for a 4ohm load if you wire the coils in series or a 1 ohm load if you wire the coils in parallel. 4ohm load is what you are after if you go the 2 channel amplifier bridged wiring the coils in series.

The dual 4 ohm sub can be configured for a 2ohm load in parallel or an 8ohm load wired in series, so if you were to get the monoblock amp which can handle the 2ohm load get the dual 4ohm sub.

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JohnA

· #4 · Apr 29, 2004

i like to use monoblocks to run subs purely because they usualy have a better power supply.

As for wiring your subs, when wiring voice coils together it doesn't realy matter but if you were wiring to subs together they recommend to stick with parallel wiring rather than series and the reason for this is back EFM, basicaly it can cause the speakers to modulate each other or make one another move causing distortion, but wiring voice coils together in either configuration is fine

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JohnA

· #6 · Apr 29, 2004

the 2 channel actualy still is running at 2ohm, if you think about it look at the power figures.

2 x 75wrms 4ohm
2 x 150wrms 2ohm so combine that to get your 4ohm mono load of 300wrms

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