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Old 01-08-2014, 05:57 AM
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Default My test: IA 80.1 *Round 2*

Round 1 here... My test: Incriminator Audio 80.1

So, this took longer than I'd hoped, but I'm a 12v guy and not normally setup for higher voltage testing. After tracking down a good number of spare caps to buss higher voltage banks and purchasing a much larger charger, I finally got rigged for 18v (starting).

There was some grumbling about my original test dropping to 13.5v when the 80.1 is rated at 14.4v. So the first order of business was to get it to 14.4v (or as close as I could) to retest. I also wanted to verify my "12v" results since they weren't quite what some might have expected.

I broke from the way I normally do it for this test. I normally set it to max clean voltage unloaded and test there. But to give the amp the best chance I could, I set it, tested, adjusted, tested, and repeated that until I was satisfied.

This is the best I could get it. The waves are obviously open to interpretation, but I'm satisfied that this is clean. Is it 1% THD? I don't know.



That's 7,500w @ 1ohm resistive and 14.5v. For those of you hoping to see another 2,000w going from 13.5v to 14.4v... I don't know what to tell you.

Like I said... I fiddled and fiddled with the thing. Teeny tiny adjustment got me here.



That's 9,400w @ 1ohm resistive and 14.4v clippy. I also don't know what to say about this. It's VERY close to rated here, but I just can't call that "clean". There's just nothing in between 7.5k clean and 9.4k clippy. Is that a good or bad thing? You and your subs can be the judge, but it's obviously making power.

Y'all can decide it's worth on 12v, but that's a wrap on the "12v" testing. I keep quoting 12v because this is 16v starting and I wouldn't exactly call that 12v testing. You would have to have SERIOUS electrical to keep this amp at 14v on a 12v system. As in... triple alts or something. 12v batts and a single alt ain't keepin this amp at 14v. Not making this power anyway.

Anyway... on to the higher voltage testing...

Resetting the gains on 17.5v starting voltage.

120v. That's good to see.


1ohm resitive.



That's 11,200w @ 1 ohm resistive and 16.6v. Yummy.

At these voltages, the amp seemed to respond to smaller adjustments. I'm gonna call this a soft clip.



That's 12,100w @ 1ohm and 16.6v and about as high as I'd feel comfortable setting it for daily. You can see it just starting to square off. We're still ok here.

So, yeah... she definitely woke up with some voltage. It's obvious that the amp has some trouble staying perfectly clean on 12v, but there's still power to be had down there. We can call the disparity between clean and clippy- "headroom" if you want. Those clipped bursts won't kill you, but I wouldn't want to run a music class like that. But that's me.

For fun and to get some reference (more on the "reference" later), we did some traditional clamp testing on subs. We tossed a couple HDD15's in Ryan's truck in a burp box and absolutley wore them out trying to squeeze every bit of "useable" power out of this thing. What I'm calling "useable" power is... we just kept cranking on it until the score stopped going up. The highest score's clamp was recorded.

I don't have pics of all the clamps so i'll just give you the results. the 12v testing was 15.5v starting since that's what most orgs allow as their voltage cap. Drop was to 14v or so. The first scores and numbers are from their respective voltage clean settings from the resistive tests. All clamp testing is .25 nominal rising to right at 1 ohm.

12v
Clean - 8,800w - 154.1db
Max useable - 10,800w - 154.8db

18v
Clean - 11,100w - 155.3db
Max useable - 13,700w - 155.6db

At 18v and .25 nominal... the amp got picky as shit. It stopped being able to come out of pause full tilt and we had to really work to find a sweet spot on a roll to keep it out of protect. This is probably the reason for the negligible differences in scores as voltage was dropping working the knob up.

Nothing happened in Round 2 to change my mind about the amp on 12v. Maybe it changed yours, but IMO, there are better options for 12v. But guess what? That's my personal opinion. Make up your own mind about the amp. It's obviously a beast on higher voltages, but unfortunately, I don't have much reference since I never test 18v... but I will be now.
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Old 01-08-2014, 06:49 AM
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And let it begin...
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Old 01-08-2014, 07:16 AM
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Great job bro !!! Lookin forward to some more HV testing on other big amps
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Old 01-08-2014, 07:27 AM
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Tfade thanks I'm sure you had more important stuff to do for the couple hrs it took you to do the retest too bad you couldn't tag ppl in the post to wake em up
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4 zv4 18:2 ct7k: c pillar wall(not sealed off)156.11:
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Old 01-08-2014, 08:43 AM
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Yessir!, I'm in...

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Old 01-08-2014, 12:19 PM
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Thanks. Curious about scores from.say ct7000, ns1 etc in same app
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Old 01-08-2014, 12:45 PM
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Can't wait for a tantric 8.1 mock up! Saving up right now for one.
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Old 01-08-2014, 01:06 PM
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Quote:
Originally Posted by kr-15 View Post
Thanks. Curious about scores from.say ct7000, ns1 etc in same app

I did test it back to back with another amp. But not one from the 6-7k roundup.

Edit: the 6-7k's were tested in the CRX. Lol. No wonder they were doing 58's. Ryan's truck is about -3db from my car. So the NS-1 test should give you an idea. It was really cold that night too.

Edit Edit: The NS-1 did 155.1 in Ryan's truck with the same box. But like I said... apples to oranges.

Triple edit: before someone latches on to that score... 7.5k did 156 that night on those subs. 8.8k did 154 on this testing day on these subs. SPL is a bitch.
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Last edited by TaylorFade; 01-08-2014 at 01:34 PM.
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Old 02-27-2014, 03:33 PM
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Bumping this up because I've been waiting for IA to post up its results from the AD-1. IA posted that their AD-1 shipped end of January so they must have it by now.
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Old 02-27-2014, 03:50 PM
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I second this bump lol
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Sometimes I just want to drive my shit into a shop and hand them a fistful of money and be like... "Here. Do this shit."
I have zero problems with people having a shop or other enthusiast do their build. But it's a little disrespectful they take credit for it and/or don't correct people when they assume the owner did the work. Happens all the time.
4 zv4 18:2 ct7k: c pillar wall(not sealed off)156.11:
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