![]() I know that the sub level on this particular deck is an attenuation level control, and not bass boost, so I was not expecting this. Distortion was detected at volume level 29/35. I then tested the subwoofer channels(obviously only the 40hz track was used for this), with the Sub level set at +15dB. With the 40hz tone, the instrument detected distortion at 34/35. When I played each track on each of my front, rear, and subwoofer outputs, I discovered the following:Īll four front and rear channels could be at full volume (35/35) at 1khz without any distortion. I used the 1khz and 40hz tracks on the provided test disc. Even the noobiest of noobs would be able to use these tools if they follow the directions properly.įirst, as per the directions, I tested my head unit, a Kenwood Excelon x-994. The directions that accompany both units are well written and clear. This makes using many brands of RCA's impossible to plug directly into it(when setting/testing head units and processors), requiring an adapter. My only dislike of the physical aspects are that the RCA input is recessed into the body of the unit. They aren't heavy, which makes me wonder why they couldn't be made slightly smaller. The silicone gloves makes holding onto the units easy and comfortable. Oh btw, the amplifier will be output a 50hz sine wave for the detector to work with.This weekend I was able to to use the SMD Distortion Detector and Crossover Calibrator to set up my system. I'm not sure if I should have looked at messing with the comparators resistor values because I am a newb with comparators, they sort of confuse me.Īnyway, so I was wanting to ask, can I use another comparator to reduce the amplifiers 100+ possible volts when I need it too? Basically I can expect to deal with as little as 35v give or take(from the amplifier) to say 300 like i previously mentioned so I am assuming a simple resistor voltage divider dosn't work? And it would be inefficient? Maybe I'm thinking to hard about this, any ideas for the circuit I'm trying to implement? The crazy high voltage from the amplifier is what is difficult for me to deal with. Well, I modeled a simple resistor voltage divider to proportionally reduce the input voltage within range(from say 150v from the amplifier output to 6v for example) but the led dosn't light at low dc voltage of say 1 volt because of how much I lowered it. I was thinking of using a 741 or tl082 so my input needs to be under 15v iirc. My issue is the voltage range of op amp input. The dc, if any will pass and light an led at the output. There is a capacitor on one of the inputs to filter the dc from one of the inputs so that only ac will be the same at both inputs, causing it to not be "amplified" by the output. So far I have been modeling a common mode comparator that filters out any ripple voltage. ![]() So, I have studdied alot, I have reached the section of the ebook of ADC/DAC but I dont have a wole lot of experience and I dont have all of the material down so I'm a newb. Basically I move the gain knob until it clips and back off slightly.Īmplifier power is so cheap these days that I can be dealing with around upto 300 volts from the amps output, or atleast that is where my limit is going to be made as far as compatibility goes. It will be used with upto very high output caraudio amplifiers as a tool to set gain so that I can connect the output terminals to it and have an led light as soon as it detects clipping. Okay, I am trying to design a simple clipping detector circuit. ![]()
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