Gold Member Username: HdubbTeam Revolution Post Number: 3654 Registered: Nov-04 | ok well did a little bit of testing on them tonight. setup 86 subaru wagon stock battery under hood and 4dp battery in back =( (waiting on rd batteries) 200 amp alty 115 at idle 2 x 3250.1s 1 elite spl v.2 15 ok well voltage started at 14.7 volts and took a nasty drop to 10.8 =( but i squeezed 4856w @ 3.75 ohms with them strapped. 72hz was my test tone. sub was wired to 1.6ohms not too bad for the imp being so high, and crappy batteries im hopin to ee a huge gain when i wire down the sub and have beter batteries in there. the bats i have have horrible discharge rates and a very high esr. =( |
Gold Member Username: SouthernrebelMonroe, Louisiana 2 DD3515s, 2... Post Number: 6379 Registered: Mar-04 | How exactly did you do the tests? What DMM's? Peak hold or watching to see where they settle? |
Gold Member Username: 420alldaylongPost Number: 3570 Registered: Sep-06 | Thinking the same thing^^^^^ |
Gold Member Username: HdubbTeam Revolution Post Number: 3655 Registered: Nov-04 | oooppss should have said. I used some craftsman dmms and a craftsman clamp meter. clamp meter was on hold and I watched the dmm as when burped iti had a constant reading... I forget anything else? =( |
Gold Member Username: Talon01Team Revolution , Pa Usa Post Number: 1250 Registered: Jun-07 | you have my att. now. i wonder what mine are putting out at .5 strapped |
Gold Member Username: HdubbTeam Revolution Post Number: 3656 Registered: Nov-04 | lol. im going to test that very soon. waiting on a recone and some batteries. LOL and I think I fried my battery under the hood a while back....lol. so we shall see when I have better batteries.... |
Gold Member Username: Spivey17323Dunellen, New jersey 15 inch Alph... Post Number: 1530 Registered: Jun-07 | hunterrrr whats up man. my phone broke lol stupid joystick u told me about on the 6700 is jammed haha got a new phone same number. text me son. sorry for the thread jack lol |
Gold Member Username: HdubbTeam Revolution Post Number: 3658 Registered: Nov-04 | hahaha did I call that shi.t or what LOL hellz yeah ill text you today bro |
Gold Member Username: HdubbTeam Revolution Post Number: 3662 Registered: Nov-04 | ok well after taking my clamp eter off "peak hold" this is what i came up with 4684.5@3.89ohms |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7447 Registered: Jul-06 | No offense intended to hunterw but: If there was no o-scope involved, this "test" is effectively useless as you have no way to know much the amp was clipping. I don't know why so many people do not understand how to properly test amplifier output. Maybe it's b/c most don't have the equipment or knowledge to do it. |
Gold Member Username: HdubbTeam Revolution Post Number: 3665 Registered: Nov-04 | I think its funny that everyone thinks that they are clipping....even if it was clipping I wouldn't see a HUGE increase in power anyway.....I think im going to buy an oscope as I guess im not legit without one. |
Silver Member Username: BonhamdTC, MI USA Post Number: 610 Registered: Nov-07 | too legit to quit |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7467 Registered: Jul-06 | " even if it was clipping I wouldn't see a HUGE increase in power anyway " You certainly would...... crank the gain all the way up and the amp will clip like hell, and appear to produce WAY more power than it actually can. But even if you had used a scope, this test would still be wildly inaccurate as you used speakers as the load. Speakers are a reactive load, you need a resistive load for this test. (reactive = impedance (ohms) changes based on the frequency. resistive = Resistance (ohms) remains constant.) Give this page a read http://www.bcae1.com/measpwr.htm and pay particular attention to the last paragraph and chart to see why speakers won't work. |
Gold Member Username: Talon01Team Revolution , Pa Usa Post Number: 1276 Registered: Jun-07 | the way hunter tested them in the car is real world power. actual rms. the way your talking about is bench testing |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7472 Registered: Jul-06 | Ok, if you wanted to know how much power the amp could do while playing one specific frequency you could use speakers, I'll give you that. But that will only be valid for those specific speakers. Use different ones and you will get different results, so it doesn't really tell anything about the amplifiers maximum output. But the lack of o-scope measurement still makes the test completely invalid as there is no may to know how much the amp was clipping, if at all. |
Silver Member Username: Hittin1LakeCharles LA., La Post Number: 296 Registered: May-07 | Heeeeeeeeee's BAAAAAAAAAAAAAAAAACK! |
Gold Member Username: InsearchofbassPost Number: 9211 Registered: Jun-04 | well I think its understood from Hunter's details that it isnt a attempt to clip the amp to create inflated numbers and I agree it might not be 100% accurate like an o-scope might be but it is at least a good reference point |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7477 Registered: Jul-06 | That is true, if he just listened for clipping by ear, it could be a good general reference. But, since the amp needs to be clipping by a substantial amount before you will even hear it (with low frequencies), the numbers are far from accurate. |
Gold Member Username: Safe_crackerChicago, IL US Post Number: 4520 Registered: Jan-06 | ^^^^ Someone's on the RAG! lOl. Polo.. |
Gold Member Username: Th3pwn3rI compensate... Post Number: 8055 Registered: Jul-06 | One thing to keep in mind is that a lot of competitors clip when they're burping. Isn't that interesting? |
Gold Member Username: Talon01Team Revolution , Pa Usa Post Number: 1277 Registered: Jun-07 | |
Gold Member Username: InsearchofbassPost Number: 9217 Registered: Jun-04 | Rob..."One thing to keep in mind is that a lot of competitors clip when they're burping. Isn't that interesting?" not to take away from Robs point because its true and I see what hes saying...but is clipping good in any amount |
Gold Member Username: Safe_crackerChicago, IL US Post Number: 4522 Registered: Jan-06 | Welcome back, It is good to have you back in ANY form... Polo.. |
Gold Member Username: Talon01Team Revolution , Pa Usa Post Number: 1278 Registered: Jun-07 | |
Gold Member Username: BasssquaredKansas Post Number: 2128 Registered: Nov-06 | PWNED |
Gold Member Username: HdubbTeam Revolution Post Number: 3668 Registered: Nov-04 | haha and actually the signal is clean. i have tested and tested. and no i wont see a huge differnce in power if its a clipped signal or not. i dont gain anything on the tl, not even a tenth of a db from clean to clipping. and this was in my car, c mon ms read my posts man! though this test isnt meant to prove how much power the amps do, or how bad.a.ss they are, this was just a test to see what i was getting at what impedence. thats whats important to me. and just thought id share it. but i am still oing to buy a o scope just to have one around. |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7480 Registered: Jul-06 | Ah Polo, only you I think ya know i'm right and you just wanted to say it first |
Gold Member Username: Th3pwn3rI compensate... Post Number: 8063 Registered: Jul-06 | M.S. is wondering what the thing in the picture is because he doesn't know what pu$$y is. |
Gold Member Username: Denali_on_22sI get Bucks like Milwa... Post Number: 5872 Registered: Feb-06 | Gosh, M.S. is such a badass. |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7483 Registered: Jul-06 | " this test isnt meant to prove how much power the amps do, or how bad.a.ss they are, this was just a test to see what i was getting at what impedance. " Well if thats the case you can disregard most of what I said. It sounded like you were claiming these numbers to be a test of how much power the amps could do. |
Gold Member Username: HdubbTeam Revolution Post Number: 3673 Registered: Nov-04 | nope. well they do the power in my car LOL but nothing further. n ot trying to boast or anything. just sharing my exp. in my setup. |
Gold Member Username: Nd4spd18Northwest PA Post Number: 7491 Registered: Jul-06 | Yea re-reading the thread I can see that now. I just interpreted it wrong |
Gold Member Username: HdubbTeam Revolution Post Number: 3676 Registered: Nov-04 | im going to get you a "jumping to conclusions mat" LOL JK officespace ftw |
Gold Member Username: HdubbTeam Revolution Post Number: 3678 Registered: Nov-04 | im going to get you a "jumping to conclusions mat" LOL JK officespace ftw |
Silver Member Username: Drant19DUB-C, TX Post Number: 946 Registered: Aug-07 | ^LMAO "thats the worst idea ive ever heard in my life Tom." |