Tested my 3250.1s strapped

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Username: Hdubb

Team Revolution

Post Number: 3654
Registered: Nov-04

Posted on Monday, May 12, 2008 - 01:31 am:

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. =(

Canaan

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Username: Southernrebel

Monroe, Louisiana
2 DD3515s, 2...

Post Number: 6379
Registered: Mar-04

Posted on Monday, May 12, 2008 - 01:50 am:

How exactly did you do the tests?

What DMM's?
Peak hold or watching to see where they settle?

Joey DeSalvo

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Username: 420alldaylong

Post Number: 3570
Registered: Sep-06

Posted on Monday, May 12, 2008 - 03:47 am:

Thinking the same thing^^^^^

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Username: Hdubb

Team Revolution

Post Number: 3655
Registered: Nov-04

Posted on Monday, May 12, 2008 - 08:31 am:

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? =(

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Username: Talon01

Team Revolution , Pa
Usa

Post Number: 1250
Registered: Jun-07

Posted on Monday, May 12, 2008 - 08:35 am:

you have my att. now. i wonder what mine are putting out at .5 strapped

Gold Member

Username: Hdubb

Team Revolution

Post Number: 3656
Registered: Nov-04

Posted on Monday, May 12, 2008 - 09:14 am:

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....

josh spivey

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Username: Spivey17323

Dunellen, New jersey
15 inch Alph...

Post Number: 1530
Registered: Jun-07

Posted on Monday, May 12, 2008 - 10:48 am:

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: Hdubb

Team Revolution

Post Number: 3658
Registered: Nov-04

Posted on Monday, May 12, 2008 - 01:01 pm:

hahaha did I call that shi.t or what LOL hellz yeah ill text you today bro

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Username: Hdubb

Team Revolution

Post Number: 3662
Registered: Nov-04

Posted on Monday, May 12, 2008 - 08:19 pm:

ok well after taking my clamp eter off "peak hold" this is what i came up with

4684.5@3.89ohms

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Username: Nd4spd18

Northwest PA

Post Number: 7447
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 12:19 am:

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: Hdubb

Team Revolution

Post Number: 3665
Registered: Nov-04

Posted on Thursday, May 15, 2008 - 11:43 am:

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.

Daniel Bonham

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Username: Bonhamd

TC, MI
USA

Post Number: 610
Registered: Nov-07

Posted on Thursday, May 15, 2008 - 11:50 am:

too legit to quit

Gold Member

Username: Nd4spd18

Northwest PA

Post Number: 7467
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 12:54 pm:

" 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.

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Username: Talon01

Team Revolution , Pa
Usa

Post Number: 1276
Registered: Jun-07

Posted on Thursday, May 15, 2008 - 01:07 pm:

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: Nd4spd18

Northwest PA

Post Number: 7472
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 01:20 pm:

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.

Mark Brockman

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Username: Hittin1

LakeCharles LA., La

Post Number: 296
Registered: May-07

Posted on Thursday, May 15, 2008 - 01:31 pm:

Heeeeeeeeee's BAAAAAAAAAAAAAAAAACK!

sean

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Username: Insearchofbass

Post Number: 9211
Registered: Jun-04

Posted on Thursday, May 15, 2008 - 01:37 pm:

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: Nd4spd18

Northwest PA

Post Number: 7477
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 02:03 pm:

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.

Polo

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Username: Safe_cracker

Chicago, IL
US

Post Number: 4520
Registered: Jan-06

Posted on Thursday, May 15, 2008 - 02:26 pm:

^^^^ Someone's on the RAG! lOl.

Polo..

Rob

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Username: Th3pwn3r

I compensate...

Post Number: 8055
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 02:26 pm:

One thing to keep in mind is that a lot of competitors clip when they're burping. Isn't that interesting?

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Username: Talon01

Team Revolution , Pa
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Post Number: 1277
Registered: Jun-07

Posted on Thursday, May 15, 2008 - 02:32 pm:

sean

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Username: Insearchofbass

Post Number: 9217
Registered: Jun-04

Posted on Thursday, May 15, 2008 - 02:45 pm:

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

Polo

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Username: Safe_cracker

Chicago, IL
US

Post Number: 4522
Registered: Jan-06

Posted on Thursday, May 15, 2008 - 02:52 pm:

Welcome back, It is good to have you back in ANY form...

Polo..

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Username: Talon01

Team Revolution , Pa
Usa

Post Number: 1278
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Posted on Thursday, May 15, 2008 - 03:09 pm:

RayRay

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Username: Basssquared

Kansas

Post Number: 2128
Registered: Nov-06

Posted on Thursday, May 15, 2008 - 03:10 pm:

PWNED

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Username: Hdubb

Team Revolution

Post Number: 3668
Registered: Nov-04

Posted on Thursday, May 15, 2008 - 03:31 pm:

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: Nd4spd18

Northwest PA

Post Number: 7480
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 03:33 pm:

Ah Polo, only you

I think ya know i'm right and you just wanted to say it first

Rob

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Username: Th3pwn3r

I compensate...

Post Number: 8063
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 07:08 pm:

M.S. is wondering what the thing in the picture is because he doesn't know what pu$$y is.

Reece Brassler

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Username: Denali_on_22s

I get Bucks like Milwa...

Post Number: 5872
Registered: Feb-06

Posted on Thursday, May 15, 2008 - 07:12 pm:

Gosh, M.S. is such a badass.

Gold Member

Username: Nd4spd18

Northwest PA

Post Number: 7483
Registered: Jul-06

Posted on Thursday, May 15, 2008 - 07:51 pm:

" 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: Hdubb

Team Revolution

Post Number: 3673
Registered: Nov-04

Posted on Thursday, May 15, 2008 - 08:22 pm:

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: Nd4spd18

Northwest PA

Post Number: 7491
Registered: Jul-06

Posted on Friday, May 16, 2008 - 12:12 am:

Yea re-reading the thread I can see that now. I just interpreted it wrong