I say that to say this, they may had been in a box that was perfectly built for them, while I am using a cheap prebuilt box for this current Soundstream sub. They ran great until one of the surrounds deteriorated from old age and being exposed to the Texas heat. I ran them very hard and never had burping/clipping issues like I'm experiencing now. About 8 years ago, I owned 2 used 12" JL Audio W3s in a custom sealed box that I had "tuned" by ear (box was made to fit in a F Body Camero before I threw it in the back of my Volkswagen GTI). I am fairly inexperienced with car audio, though I do my research before I get into new hobbies. Lost by Gorilla Zoe, On My Level by Wiz Khalifa, Rain by Breakage were my immediate go to songs to test the sub - all played from Spotify app. I could barely turn the remote gain control knob up 25% (after adjusting amp's gain with the remote knob at 100%) before the sub would start clipping/burping. Regardless of which 40hz track (3,5 or 7) I set the amp's gain to, it would immediately start clipping the sub once I started listening to music. Confirmed distortion light was off after pulling away the flathead screw driver. I always backed the amp's gain off 1 or 2 clicks after finding the point it would light up the distortion light. Using tracks 3, 5, or 7, I found that I ended up with my amp gain setting around the same point, about 60-70% turned up before the distortion light would come on continuously. I then decided to turn the remote gain knob all the way up when setting gain on the amplifier. I could not get the distortion light to stay on continuously at any gain level on the amp. I first tried using tracks 3 (40hz -5db), 5 (40hz -10db), and 7 (40hz -15db) with my Memphis Audio Gain remote control knob set at half way. 34/35 volume is highest HU volume before distortion. Ran track 1 (40hz 0db) to find max volume from HU. HU - Everything is zero, flat, no boosts, no bass engine, except HPF 80hz (to reduce the 40hz tone pounding on door speakers when setting gain on sub amp)Īmp - Gain lowest, LPF highest, Subsonic Filter lowest, 40hz bass boost turned completely down/offĭisconnected sub speaker wires from amp. Soundstream Reserve 12" 1000w - wired 1ohm Memphis Audio PRX1500.1 - 1500w 1ohm - 1.27cf sealed enclosure Low Battery LED trigger battery voltage Guaranteed operating range of input signal is 1.2Vrms – 200Vrms.Distortion Detection trigger level > 1.0% Harmonic Distortion.If treated as such it should provide you with many years of reliable service. When you pick up the DD-1+, know that you are holding a precision piece of equipment. Quasi-RMS voltmeter (can detect clipping at any frequency).Features our Patent Pending Distortion Detection system plus digital microcontroller and our proprietary firmware.Verifies that the gain overlap of an install hasn't been tampered with after install.Checks gain overlap of an audio system without making any adjustments to the existing settings.Sets audio system gain overlap, continuously variable from 0.0dB - 15.0dB in 0.1dB steps.What is the difference between this and the original DD-1+? It can also be useful for detecting distortion in the audio signal caused by poorly designed or malfunctioning audio equipment. The purpose of this tool is to enable the installer to set the gain of an audio amplifier to match the source unit’s output level, accurately and quickly.
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