Menu
Forum
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Gallery
New media
New comments
Search media
Members
Registered members
Current visitors
Classifieds Member Feedback
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Log in / Register
Forum
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
Log in / Join
What’s new
Search
Search titles and first posts only
Search titles only
Search titles and first posts only
Search titles only
General Car Audio
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Build Logs
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Home Audio
Off-topic Discussion
The Lounge
What's new
Search forums
Menu
Reply to thread
Forum
Car Audio Discussion
Amplifiers
Fixed/Fried My Amp!!!
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="snoopdan" data-source="post: 1926256" data-attributes="member: 564991"><p>Those caps are such low capacitance that it wont hurt a fly.</p><p></p><p>as far as the first guy's amp is concerned, I highly doubt the reason it shorted was because of some goop, its non conductive anyways. let me ask some things about your amp first though, did it fry the first second you put the power leads to the amp, or when you tried to turn it on via remote switching from your remote turn on lead power? Plus a pic of the damage would do me well in trying to figure out where the damage stemmed from and what needs to be looked at. Usually amps fry when people run the amp at an impedience lower than the fet's can handle thermally, and they bust/crack and or catch on fire. Also you must try to get an exact part replacement from the correct semiconductor manufacturer, since even though one company makes IRF9640 for example, its an International Recitifer part, but Fairchild makes their bastard version of it, as well as Phillips and Intersil. All three claim a Vd of 200v, Rp of .15 Ohm and Id=18a but have different attributes like single pulse avalanche energy, and pulsed drain current. These little differences are enough to screw up the left and right biasing of the amplification stage....some amps rely on the natural switching function of the chips to regulate this, others have a variable resistor biasing circuit to make sure the sine wave doesnt go too goofy into distrotion / overlap. For bias circuit adjustment, you really need to contact the tech support of the company who made the amp and pray to god you find somone on staff with half a frontal lobe.</p></blockquote><p></p>
[QUOTE="snoopdan, post: 1926256, member: 564991"] Those caps are such low capacitance that it wont hurt a fly. as far as the first guy's amp is concerned, I highly doubt the reason it shorted was because of some goop, its non conductive anyways. let me ask some things about your amp first though, did it fry the first second you put the power leads to the amp, or when you tried to turn it on via remote switching from your remote turn on lead power? Plus a pic of the damage would do me well in trying to figure out where the damage stemmed from and what needs to be looked at. Usually amps fry when people run the amp at an impedience lower than the fet's can handle thermally, and they bust/crack and or catch on fire. Also you must try to get an exact part replacement from the correct semiconductor manufacturer, since even though one company makes IRF9640 for example, its an International Recitifer part, but Fairchild makes their bastard version of it, as well as Phillips and Intersil. All three claim a Vd of 200v, Rp of .15 Ohm and Id=18a but have different attributes like single pulse avalanche energy, and pulsed drain current. These little differences are enough to screw up the left and right biasing of the amplification stage....some amps rely on the natural switching function of the chips to regulate this, others have a variable resistor biasing circuit to make sure the sine wave doesnt go too goofy into distrotion / overlap. For bias circuit adjustment, you really need to contact the tech support of the company who made the amp and pray to god you find somone on staff with half a frontal lobe. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
Amplifiers
Fixed/Fried My Amp!!!
Top
Menu
What's new
Forum list