Tweeter Capacitor Upgrade (Coincident PREs)
With bypass I noticed that vocals, saxophones and acoustic guitars sound not as smooth and tonaly reach as it was without bypass. It seems it cause a deep in lover mid range. This can certainly be a symptom of what I'm describing. The amp used matters a lot, so this will be worse with tube gear. You can measure ESR with Dayton DATS or a home grown jig using Room EQ Wizard. It can help you compensate accordingly. https://www.roomeqwizard.com/help/help_en-GB/html/impedancemeasurement.html |
@d2girls Unfortunately I haven't had the chance to be around too many high end systems that might compete with the Coincident PREs (previous speakers were Thiel 1.6s, 2.4s, and Coicident Super Eclipse IIIs). As they should be, the PREs are in a different league from those other speakers. It's been a real learning experience getting these set up, even coming from another Coincident system (I amplified the SEIIIs with their Franks). It probably took me 6 months to really dial them in. I had to replace my speaker cables, my 300bs & rectifier tubes, add new power cables, grounding wires, replace a "harsh" power strip, consolidate all my gear down onto one dedicated line, and am now adding new capacitors to the head units. I've also tried four different amplifiers (the Franks, Atma-sphere M60s, the Pass XA25, and Lyngdorf TDAI 3400). At various points I've had almost no bass, harsh irritating high frequencies, and muddy imaging. Gradually, however, it's become clear that none of those problems were because of the speakers... just some other part of my system that had to be brought up. Having persevered through all that I do think I'm committed to the speakers. Obviously they're brutally revealing, but can also sound really warm and gentle once everything is setup correctly. As I said, the process of getting them setup has been incredibly educational. That said, I believe your concerns about dealing with the company is also a real issue. My speakers were damaged in shipping and so I had to interact a lot during the repair process. I could go on and on, but do expect to be charged a premium fee for any parts or repairs. And if there is ever any problems or conflict, do not expect Coincident to do anything to "make it right." |
And to go back to the thread... regarding the capacitors, I did decide to remove the Duelund bypass caps (.01uF AG) last night. They seemed to improve the tonality of the Clarity cap (a bit "richer" high frequencies), but I was also hearing some smearing that was irritating me. I haven't done the full A/B, but I do think that removing them cleared things up a bit. Curious to hear the Jupiters next week. |
Hey Cal, Did you try 0.1uF Audyn True Copper? I feel 0.01uF is way to little. I've had 4x that and had no effect at all, also Duelund silvers. I suggest you try the Audyn's because the value is right (0.1uF) and relatively cheap ($20 / each) If you hear no useful improvement, and you are on the border, then I'd give up on anything else. |
