Oui, this is what happens when I only work on emails all weekend, take half a day off and not keep on top of the forums every 30 minutes like always. First off, this customer ordered a D4, as he said, for the first sub. When it arrived, he swore up and down that he got a D2 sub. Which by the way, had never happened before where a customer was sent the wrong coil, so it was VERY surprising to have someone say they got the wrong coil. Since he was so adamant about the wrong coil and has been accusatory from the get go, I assumed he was using a trusty DMM and was reading it correctly, I apologized for the supposed mistake of the build house, so for his second sub, we adjusted it to a D2 coil. So his second sub came and appears to be a D2 as ordered. For future reference, there are three different people who check or overlook the sub before it leaves the build house, so to say we have no quality control is clearly not accurate. There is markings on the box, the build ticket and the former, so it is HIGHLY unlikely that a sub would ever ship out with the wrong VC. Yes, we are a small brand, but clearly we have experience doing this and we have NEVER and I mean NEVER screwed over a customer and as explained and posted numerous times in a thread, if a mistake was made we have always worked to correct it asap. So for one customer to be claiming it happened twice, seems quite odd. As explained in this thread, the D4 coils have a resistance lower than D4, same with D2. The Gcon does NOT come in a D1 coil option as there are D1 coils for it. This is due to a number of reasons, power compression, impedance rise or box rise etc., so that the coils rest below the stated resistance and with natural rise will be closer to stated resistance. (Alton's explaination is much better then mine: http://www.soundsolutionsaudio.com/forum/topic/60275-two-new-ssa-subs-showing-diffrent-ohms/page-3#entry1020077) For example, if you get a D4 ohm subwoofer from a different brand that uses 4.0 ohm Re, after natural rise it will be higher than a D4. One easy way to know for sure is on each former, above the coil should be written in black sharpie, stating the voice coil that is on the subwoofer. As it stands now, with everything written out by the customer as the facebook messages did not contain all of this info, we can only assume that the first Gcon was a D4 as ordered and the second Gcon was a D2 as ordered. This may be partially my mistake as I did not ask for a photo of the formers from the get go, but I have never had to do that before. If the customer truly is the first one with wrong voice coils, we will clearly correct it, but if the first one was read wrong..... Side note, with SSA store rewards, the total was $444, not $457.