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modifying amplifiers

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notw 
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Member spacespace
Joined: May 23, 2008
Location: Georgia, United States
Posted: October 21, 2008 at 6:13 PM / IP Logged  
Anyone know a good site for information on modding amps?
Also, what is a good site for amp parts?
i am an idiot 
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Location: Louisiana, United States
Posted: October 21, 2008 at 6:23 PM / IP Logged  
What kind of amp parts are you looking for?
notw 
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Member spacespace
Joined: May 23, 2008
Location: Georgia, United States
Posted: October 21, 2008 at 7:41 PM / IP Logged  
I am using an alpine mrd-m1000 and i have heard that it is possible to mod an amp to get more power out of it(dropping the resistance). In my case the amp is a 2ohm max and i need it to drop to .5ohms. I think, if that is even possible, that i will pull about 3500-4000wrms if the ohms to wrms follows suite.
Even possible?
i am an idiot 
Platinum - Posts: 13,667
Platinum spaceThis member consistently provides reliable informationspace
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Posted: October 21, 2008 at 7:50 PM / IP Logged  
Maybe for a Nanosecond.
KarTuneMan 
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Posted: October 21, 2008 at 10:34 PM / IP Logged  

notw wrote:
Anyone know a good site for information on modding amps?
Also, what is a good site for amp parts?
  Dude... I love Jesus too....modifying amplifiers -- posted image.

Why do you want to modify a perfectly operating amp?

Would it not be easier to simply purchase an amp that meets your needs to start with??

Just wondering....

haemphyst 
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Platinum 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: January 19, 2003
Location: Michigan, Bouvet Island
Posted: October 22, 2008 at 12:12 AM / IP Logged  
notw wrote:
Anyone know a good site for information on modding amps?
Not gonna happen. At least not for less than it would cost you to buy an amp with the desired characteristics in the first place.
Seriously. To make a 2 ohm stable amplifier capable of running a .5 ohm load, you have to beef the power supply to make 4 TIMES the current. This means FAR more parts (4 times the number, at the same current capacity), number-wise, or far more EXPENSIVE parts, current wise. You have to either change the switching frequency of the power supply and/or beef the toroid. You have to consider the outputs, as well. They will be subject to 4 times their originally designed thermal load. The heat sink is designed to "blow off" X heat, effectively, now you want it to blow off 4 times as much!
You WILL be better off buying what you want to start with.
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."
megaman 
Copper - Posts: 385
Copper spacespace
Joined: June 24, 2008
Location: Montana, United States
Posted: October 22, 2008 at 12:22 AM / IP Logged  
Think of the amp design as a huge stack of dominoes.  Change one to do something different and you subsequently have to change the rest down the road to give you the desired effect.
KarTuneMan 
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Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member consistently provides reliable informationspace
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Posted: October 23, 2008 at 12:42 AM / IP Logged  
KarTuneMan wrote:

notw wrote:
Anyone know a good site for information on modding amps?
Also, what is a good site for amp parts?
  Dude... I love Jesus too....modifying amplifiers -- posted image.

Would it not be easier to simply purchase an amp that meets your needs to start with??

Just wondering....
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: October 23, 2008 at 10:35 AM / IP Logged  

i am an idiot wrote:
Maybe for a Nanosecond.

Aw common man, don't exaggerate!  You know it would last a millisecond!

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