I have followed everything here from the beginning and must say that I have gradually lost all faith in Hanshow. I am now looking at Teslaoffer harness but is it better put together, are the cables heavier? I plan to connect a subwoofer to it. Unfortunately, I am not an expert in this, but due to a lack of experts who can work on Tesla here in Belgium, I have to rely on myself. The sound system is the only downside to my SR + and would like to fix this. I come from an Audi with B&O and my wife's BMW is Harman Kardon so de diference is huge.
My own take on it is that the Hanshow products are more of a work in progress, and as long as you treat them that way, I think they're a reasonable deal. I bought the version E, so this is all based on my experience with that prorduct. The DSP seems nice, though I don't think it's particularly powerful. Ditto the sub. To me, the wiring harness is the main issue. Some folks have received miswired harnesses, and I suspect this has to do with wiring coloration more than anything else - it's easy to miswire a harness when you've got 6 identical purple wires in it. I'm planning on using a multimeter to check all the wires, and swap any that are miswired.
The small gauge unfused power cables, on the other hand, are a bigger issue to me. The power wire running to the sub is completely unfused, and while the sub is fused, I wouldn't trust the 16awg wire to be able to handle a load that would blow the fuse on the sub. I did find an inline fuse on the power wire running to the DSP, but it's on the DSP side of the wire, not on the battery terminal side of the wire. Consider that the power wires hook up to the main battery at the penthouse, which is capable of pushing hundreds of amps through the 12V circuit. If there was a short anywhere in the power wire before it got to the inline fuse or the sub, I'm almost positive it would result in a fire.
What I've done is clipped the power terminal ring and removed the line to the sub entirely, leaving only the power wire for the DSP. I spliced an inline fuse holder to the power wire, and then crimped a new terminal ring to that, so I have a fuse right next to the car battery. I bought some 10awg wire and made a new set of power and ground wires for the sub, with an inline fuse right next to the positive terminal ring. Both power wires then are protected by fuses next to the positive terminal ring, so that a short in either line will blow the fuse. I'm going to use a 7.5 amp fuse on the DSP power wire, and a 20 amp fuse in the sub.
I'll take pictures as I install and post them here.
All that said, do I think it's worth it? I'm a pretty handy guy with electronics, so I'm fine with making these changes to the kit. My money, then, got me a good harness that's 95% done, a decent sub and a nice DSP, all for a fairly reasonable price. I'd been planning on building my own system, with wires spliced into the existing speaker wires, so this definitely makes things easier for me, even with the changes I've had to make to the harness. Would I buy the kit again? Probably, yeah. Would I be comfortable installing it as-is? Nope. Not in the least. The power wires give me the willies, and I think everyone who installs one of the powered versions needs to change the power wires in order to be safe.