corteznewbie Posted August 12, 2010 Report Share Posted August 12, 2010 so i read a few threads bout modded amps and was wondering how do you mod a amp? Quote Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
Boon Posted August 16, 2010 Report Share Posted August 16, 2010 How long is a piece of string? Depends what you want to achieve. Usual stuff: Protection mods - disable the protection circuitry or change when it kicks in. e.g. allow the amp to run at 16v, or at lower than normal ohm loads. Only really useful with supporting mods, or for burps, or with a few select amps that are sufficiently over-engineered to handle stuff they weren't originally designed to. Capacitor mods - adding caps on the high-voltage rails. Expensive, doesn't gain you too much unless you use a TON of caps, although you can use higher voltage ones as a supporting mod. Toroid Re-wind - change the windings of the power supply toroids to get higher rail voltage. This gives you more power but reduces current handling. Usually requires pretty significant supporting mods such as output MOSFETs and rail caps, occasionally the rectifiers too, but is about the only true way to make an amp more powerful MOSFET/Transistor swap - Swapping the semiconductors for higher performance parts, either with higher voltage/current handling or lower Rds(on) or similar in order to either increase the efficiency of the amp, allow it to handle lower ohm loads or allow higher working voltage. Op-Amp swap - For the SQ buffs, you can swap out the op-amps used in the pre-amp section (most amps use very, very cheap ones since they're enough for most purposes) for better sounding ones. If you wanna get really picky you can start at the RCAs and replace everything in the signal path with higher-end bits but it's expensive for not a lot of gain. Pretty much everything here except for the protection mods requires that you know your way around amplifiers, I wouldn't even start without a scope and a fair bit of experience working on amps. Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
STEvil Posted August 21, 2010 Report Share Posted August 21, 2010 you forgot mosfet strapping. Easy to do but dont bother doing it on an amp you love lol Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
corteznewbie Posted August 21, 2010 Author Report Share Posted August 21, 2010 so is it possible to make a old school 4ohm amp a 1 or 2 ohm amp Quote Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
STEvil Posted August 22, 2010 Report Share Posted August 22, 2010 basically no. technically yes. Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
moetpoppin Posted August 22, 2010 Report Share Posted August 22, 2010 ive heard of this stuff too and am actually pretty interested starting up for an electrical engineering major and will most definitely be looking for this kinda stuff in theory. messin with this stuff as basics is fun in general but throwing it into an auido set up would be bad ass ty Quote TY Moet poppin', hoe hoppin', aint no stoppin' B.I.G. poppa, I'm a bad boy Party and Bullshit - The Notorious B.I.G. Honest estimate on this truck when it's all done........... 172.3........... Ehh.. U are aware of what 172.3 is, right? yep..... Two Pyle 15"s Build log Link to comment Share on other sites More sharing options...
corteznewbie Posted August 22, 2010 Author Report Share Posted August 22, 2010 i have a old school class a/b i'd like to modd like that Quote Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
Boon Posted August 22, 2010 Report Share Posted August 22, 2010 you forgot mosfet strapping. Easy to do but dont bother doing it on an amp you love lol Gotta allow for increased drive current... so go through and replace all your pissy little A1023's and C1027's with something bigger, probably a larger case part. Or cut the drive tracks and use the drive transistor to drive something bigger which in turn drives the FETs. And don't forget to throw in a pile of Zeners G-S to prevent the amp going into oscillation and going KABOOOOM Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
STEvil Posted August 24, 2010 Report Share Posted August 24, 2010 like I said, dont bother doing it on an amp you love lol Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
corteznewbie Posted August 24, 2010 Author Report Share Posted August 24, 2010 its not a amp i love just a amp i have layen around and would like to try to make better Quote Team DBs (Driven By sound) Link to comment Share on other sites More sharing options...
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