General Discussion General discussion about all things car audio, from pioneer, orion, alpine and eclipse.

what will happen ?

Old 04-12-2006, 12:07 AM
  #1  
4000 Watt CAFz'r
Thread Starter
iTrader: (5)
 
Join Date: Jan 2005
Posts: 4,643
what will happen ?

if i run a 1200.1pg amp (1554w amp) to a 27kx focal sub (600w max sub) http://www.focal.tm.fr/accueil_en.htm
ftp://208.187.38.55/Phoenix_Gold/Man...00.1manual.pdf

what will happen ?

this is sq set up
zzzzzzz is offline  
Old 04-12-2006, 01:00 AM
  #2  
1000 Watt CAFz'r
iTrader: (3)
 
SQ Civic's Avatar
 
Join Date: May 2005
Posts: 1,185
Originally Posted by zzzzzzz
if i run a 1200.1pg amp (1554w amp) to a 27kx focal sub (600w max sub) http://www.focal.tm.fr/accueil_en.htm
ftp://208.187.38.55/Phoenix_Gold/Man...00.1manual.pdf

what will happen ?

this is sq set up
well it all depends on the gains, and the volume ****... if those 2 things are used correctly then nothing bad will happen...

Mark
SQ Civic is offline  
Old 04-12-2006, 01:06 AM
  #3  
Hof
50 Watt CAFz'r
iTrader: (2)
 
Hof's Avatar
 
Join Date: Apr 2005
Posts: 347
Exactly what sq said...you don't have to set the amp to use all 1200 watts, just set the gain in proportion to what the woofer can handle...even better with an sq setup set gain on sub to blend perfectly with your fronts.
Hof is offline  
Old 04-12-2006, 01:25 AM
  #4  
4000 Watt CAFz'r
iTrader: (66)
 
MR2NR's Avatar
 
Join Date: Dec 2003
Posts: 6,420
Don't agree with the above but maybe I am picky. An amp makes the same amount of power regardless of where the gain is set. The amp is going to make it's power into the load as determined by the sub. It should be fine provided you allow the voicecoils to cool. If you keep any sub pinned or even close to it's thermal limits with any amount of power and it cannot dissipate the heat, that sub is going to fail. As this sub appears to be a 4 ohm driver with a recommended power handing of 300w rms, it may be a good match depending on the 4 ohm rating of the amplifier to be used.
MR2NR is offline  
Old 04-12-2006, 01:31 AM
  #5  
4000 Watt CAFz'r
iTrader: (66)
 
MR2NR's Avatar
 
Join Date: Dec 2003
Posts: 6,420
Here is a great link on a similar discussion.
http://www.the12volt.com/installbay/...TID=74226&PN=1
MR2NR is offline  
Old 04-12-2006, 08:21 AM
  #6  
1000 Watt CAFz'r
iTrader: (3)
 
SQ Civic's Avatar
 
Join Date: May 2005
Posts: 1,185
Originally Posted by MR2NR
Don't agree with the above but maybe I am picky. An amp makes the same amount of power regardless of where the gain is set. The amp is going to make it's power into the load as determined by the sub. It should be fine provided you allow the voicecoils to cool. If you keep any sub pinned or even close to it's thermal limits with any amount of power and it cannot dissipate the heat, that sub is going to fail. As this sub appears to be a 4 ohm driver with a recommended power handing of 300w rms, it may be a good match depending on the 4 ohm rating of the amplifier to be used.
That I don't agree with 100%. the gain **** isn't a volume control. but I was getting at the fact that it needed to be level matched to the other amps for best results... I agree with you on that it doesn't directly affect how much power the amp is putting out since it is only amplifying the input signal, but where I tend to disagree is that the volume that the deck is set to, directly affect how much power the amp is putting out... number one, the amp doesn't put out the same amount of power as volume level 5, as it does at volume 35 for starters, so that plays a big part... you might run into problems using an amp that large because you will have to set the volume lower than you might like so that you don't over power the sub, which will result in possibly not having your speakers as loud as you'd like them, but still...


Mark

Last edited by SQ Civic; 04-12-2006 at 08:27 AM.
SQ Civic is offline  
Old 04-12-2006, 08:30 AM
  #7  
1000 Watt CAFz'r
iTrader: (3)
 
SQ Civic's Avatar
 
Join Date: May 2005
Posts: 1,185
and as far as how much power the sub will be seeing... as per the manual, hooked up into a 4 ohm load, @ 12.5 VDC, it's putting out 250 watts, so even if you get double that because of a little higher voltage, I'm sure it will be fine, if the volume is kept in check...

Mark
SQ Civic is offline  
Old 04-12-2006, 09:45 AM
  #8  
1000 Watt CAFz'r
 
Team Shadow's Avatar
 
Join Date: Apr 2003
Posts: 1,692
i think that if you grab a test tone.....1khz and have the gains al lhte way down......and put your leads from a DMM onto the speaker output.....you will get a reading.....and if you raise the gain.......you will see an increase.....how much of an increase is depends on a few things......but i know that it will increase.

so i dont think it puts the same power output with min gains as with gains higher.

but you can also achive the same output on the speaker side with gains pinned and gains low with a line driver......but how much of a difference in sound i do not know.

any one know the answer to that one?which is better sq

high gains/no line driver = x output

low gains/linerdriver = same x output

according to our tests for spl i know what we encountered. but im curious as to what you sq'ers have found.
Team Shadow is offline  
Old 04-12-2006, 10:04 AM
  #9  
0 Watt CAFz'r
 
Join Date: Mar 2006
Posts: 48
^ generally its best to have as much signal, and have the amp gains as low as possible.. This ensures system noise/noise floor is at its lowest, in theory.

a 4vRMS source is usually enough.
VWmk5 is offline  
Old 04-12-2006, 02:33 PM
  #10  
4000 Watt CAFz'r
Thread Starter
iTrader: (5)
 
Join Date: Jan 2005
Posts: 4,643
Originally Posted by SQ Civic
and as far as how much power the sub will be seeing... as per the manual, hooked up into a 4 ohm load, @ 12.5 VDC, it's putting out 250 watts, so even if you get double that because of a little higher voltage, I'm sure it will be fine, if the volume is kept in check...

Mark

ok how / why can this be 12vds = 250x1 then 14.4vds=1200x1 and and 14.4vds=1400(dynamic power)

what # do i need to look at 250/1200/1400?
zzzzzzz is offline  

Thread Tools
Search this Thread
Quick Reply: what will happen ?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.