JL Audio Refurbished TwK-88 System Tuning DSP: 8 Inputs/8 Outputs+Digital in/out

When I first purchased my 2008 Avalanche, I was hoping to keep the original system. However, as a few months went by the horrible Bose System and sub took its toll on me. One at a time I replaced the speakers then head unit. What a chore it was with the console wiring ect especially with the Maestro module that keeps factory chimes ect with the endless number of cables and adapters and poor user manual. Later, I found out I never really use the steering wheel controls and all the other hip hop that that Maestro provided anyway. When I finally put in all my speakers and amps, I found a harshness in the upper registers that I could not tame even using the button for the -3 attenuator on the Infinity crossovers. -3Db attenuation is useless. I was never a real fan of passive crossovers in speakers because the lack of adjustment you have (no or insufficient level control) and originally wanted to purchase a newer crossover to replace my vintage Sony XEC 1000. I found that today’s crossovers are cheap in price and quality and could not find a comprimable 5-way crossover so cautiously jumped into the DSP world. It has been a bit frustrating and time-consuming figuring out how to use it and adjust. I did contact JL Audio Support on a few occasions and they were a great help. I found out that I had my system configured in mono. They fixed my settings for me and now I was on my way. I was never quite satisfied though after at least 30 plus hours of tinkering. Playing with the parametric equalizer, crossover settings, and trying to find out what frequencies needed to be cut proved to be a daunting and nearly impossible. I knew I had a harshness to my upper frequencies that I could not tame. The real revelation came when I purchased a $ 20.00 microphone (Dayton Audio) for my android telephone and purchased a $ 5.00 app to watch in real time and analyze which frequencies needed to be cut by playing a cd with pink noise. Although when I cut the frequencies, I couldn’t see a lot of difference on the app/phone, but real time did make me aware of which frequencies I needed to cut. I went nuts with the parametric cutting all the peaks by about 6 db. You will need to adjust each speaker individually except the subs and tweeters and it takes many hours. You also need to decide the bandwidth to cut. By default, the Q is 1.41. The TWK 88 is fantastic because you can shut off any speaker individually while you tune the other and 10 bands of EQ for each speaker individually. Also, you will need to measure the exact distance from your ears to the speakers and enter it to get your delay settings. Although I am not sure If I will ever be done tweaking this unit, I was amazed at how the sound had improved. The TWK 88 has 6 presets which I compare often and was amazed to find the one I finally thought was the best I could obtain did not sound nearly as good as my new discovery. My ears failed me (I thought it was the upper range that need taming) the real issues were in the mid bass range 185hz, 200-300 hz and 1-3 KHZ range. The music always had a hollow sound with an annoying harshness. I am very happy with the sound now and the money I spent was small in comparison to the huge difference it has made. I actually enjoy the music now. I used to find myself turning it down a lot because of harshness at certain points in the song (frequencies). The only improvement the JL Audio TWK 88 could have is add automatic frequency equalization and time delay. I have one on my DSpeaker Anti mode 2.0 room correction device for home use. Also, they could include a built in RTA and software, and Bluetooth so you could use your phone instead of messing with laptop but that would drive the price up I am sure. One more pair of outputs to make it a 5-way would be a plus. I am not using tweeters in the rear like I was in my other system so I did not need it and I am sure I could find a work around for the lack of another output. I have purchased hundreds of electronic devices in my lifetime and find this the most fascinating of all of them. They have endless ways of customization and tweaking available to the user

Product seems awesome like new even tho its refurbished havent gotten a chance to hook it all up but i did connect to the tun software and everything seems to be fine

Amazing what these dsp's can do to stock sound! It brought my vehicle's sound back to a natural sound! Amazing! I bought my items refurbished. They're just like new! I also had a great experience with Creative Audio, fast shipping too! Don't hesitate to purchase. Thank you!