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TonyD'Amore last won the day on January 17 2016

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  1. I've tried Track 1 (40Hz 0db) Track 3 (40Hz -5db) and Track 5 (40Hz -10db). Wow if it won't clip with the 0dB track then it must have a anti-clipping circuit in it or some type of rollback circuit so that it can't be pushed too hard. I personally have not seen or played with one of these amps in person though I know that it is VERY similar to a model in the Hertz lineup and we have heard of people having trouble with that one as well. If the amplifier is not allowed to clip one may consider that an amplifier problem, not a DD-1 problem. The DD-1 is doing what it is supposed to do, alert the user of distortion over 1%. If the amp isn't capable of clipping it not work on the DD-1 or DD-1+. If you want to set it with a voltmeter like someone mentioned, you can do it, but you must use one of the overlap tracks. Simply using a 0dB sine and setting with a voltmeter or scope will result in ZERO gain overlap. As a side note for you number chasers, a 1000 watt amp that is allowed to clip will be significantly louder on the meter than a 1000 watt amp that is not capable of clipping. Based on the information you have presented to me here, and not playing with the amp in person, I'd say this amp has a rollback circuit of some type that doesn't allow for clipping. Tony
  2. If you can get 1.8V out of the RCAs with Track 1, how many Volts do you get out of the speaker terminals with 1.8V going into amplifier with gain at minimum? How many at Maximum gain? I'm guessing that the amplifier doesn't have enough gain designed into it. But with those measurements made we will know for sure. Tony Definitely not user error. I swap out the JAD1200.1D for my old hifonics amp and follow the same procedure (instructions that came with the dd1) and it works, distortion light shows up. With the JAD the distortion light never lights up. Guess I would have to make a video of it. RCA voltage is 1.8v at max clean volume. I can get it to distort while finding the hu max clean volume through the RCAs just not after I hook into the JAD1200.1D.
  3. All amplifiers should work on the DD-1. The blink while turning up the gain is caused by the DD-1's auto-range circuit shifting gears into the next range. The fact that the distortion LED doesn't illuminate even when the amplifier's gain control is all the way up would indicate the amplifier doesn't have enough gain designed into it. Amplifiers for automotive use should be able to reach clipping with 200mV of input and the gain control maxed. Tony
  4. Hi guys, if you are having trouble with your AMM-1 please email [email protected] with the problem, serial number and firmware revision OR read on below. The initial release firmware had a problem with reading burps or bursts of power, (on class D amps especially) the inductive kickback from the woofers causes a big voltage and current spike at the end of a burp which the AMM-1 would read as power. Once we discovered this problem we revised the firmware on all future builds and for anyone that wanted to send theirs in for the update. It seems that the update makes it hard to read power on some amplifiers as we have been learning of this issue recently. I have built a new firmware version that seems to address both issues I believe, that is firmware 3.92. I also modified it for a few people with impedance shown simultaneously on the two power screens. It works the same as the old code (though no "dyno complete" message) in dyno mode. This is 3.93 If you want 3.93 in your AMM-1 so that you can measure music and bursts (not the original intent of the tool) just send it to me with a note in the box with your return address. I will pay for the update labor and the return shipping. Tony Attn: Firmware Update D'Amore Engineering 1501 E. Baseline Rd Suite 5-101 Gilbert, AZ 85233
  5. Thank you guys for all the well wishes, I'm feeling better and haven't had any issues lately, thankfully! My heart went into A-fib the night of March 31 while I was asleep I guess? I woke up at about 4am to my 10 month old son crying and while helping the wife tend to him I noticed my heart felt like it was beating randomly. I asked her to feel my chest and she agreed. I went back to sleep until 7am and when I woke it was still doing it. I tried to take my blood pressure and the blood pres machine couldn't read me and just gave me errors. It always works so I knew something was up. I still drove myself to work though as I "felt" fine. After being at the office for about 30 minutes my partner Juan suggested that I go to the Urgent Care because it is nearby, nice, and you shouldn't "fuck around with that" - in his words. I drove myself there too. They got me in and did an EKG, told me I was in Arterial Fibrillation and my pulse was around 170 beats/min and that the Ambulance was coming for me. Now in the back of an ambulance headed to the ER the paramedic is explaining to me that my heart rate is now over 200 beats/min and I would probably end up having a rather bad day including passing out and having a date with the defibrillator. They started giving me injections of something that would make my heart slow down while on the bus ride, but it did nothing for me. Still at 200 bpm arriving to the ER. They starting doing lots of blood work, x-rays, sonagrams of my heart and administering different drugs to slow it. Long story short, 10 hours later my heart had returned to normal rhythm and pace. Then I had to spend the next 24 hours on different drugs and tests because I was at a high risk for a blood clot and stroke from being in A-fib for as long as I was. I'm on a med now to keep the heart chill, the reason all this went down is still unknown but my cardiologist says 75% chance its from sleep apnea. Did a sleep study a few weeks ago, get the results tomorrow. The class D hate will live on! Thanks guys! Tony D
  6. I believe the warhorse exceeds 1% distortion at all times, so it wouldn't work.
  7. Admittedly I haven't tested this particular Alpine unit, yet. Sounds like I will in a bit. BUT, I have tested other Alpine heads, and other brands as well that have this problem. Just because you cannot see it on your "scope" doesn't mean it isn't there. There is a video of ours on YouTube where we test a high end alpine that has distortion at low or high volume levels, over 2%! And guess what? YOU CAN'T SEE IT ON A SCOPE. It's not *noise* either. If Alpine or the other companies that are having this problem with their headunits wants to hire me to consult to fix the problem I am available for that. I have already fixed it on Boss headunits about 5 years ago. NO I won't TELL you what the problem is, without billing you. Tony
  8. Just wanting to show this unit distorts at 22 and show what the actual % of distortion is, thats all... Im a nobody, you're the somebody... LOL Bring it by, we will put it on the DD-1 and a HP8903A
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