10/27/2022 0 Comments Cogent field coil horn speakers![]() ![]()
Cogent field coil horn speakers series#the ‘imperia’ is a four way horn system with a vertical series of conical horns covering 100Hz to 20kHz, and two rear loaded subwoofer horns using a massive 21 inch neodymium woofer handling 20Hz to 100Hz. Instead of following current trends and embracing cutting edge technology, OMA audio always looks back to create audio equipment. This is sort of a shot in the dark, but might anyone here know if replacement parts, original or otherwise, for these? I would love to have a functional pair if that isn't possible these might have to go on to another hopeful soul.OMA audio looks back at gramophone design for imperia horn seriesĪll images by cynthia van elk for OMA audio I might reach out to Steve Schell if I can find some contact info, as he seems to be the other expert in the world of RCA equipment. I've reached out to Jonathan Weiss, as he's helped me in the past with other RCA gear, to see if he knows of any extant replacement parts for these speakers. The (with-humps) MI-11411A's tweeter has an open voice coil. Some other separation is occurring, however, at the juncture of the tweeter cone and the bass cone - during playback this produces a slight click, which I imagine would only worsen over time with further playback. Metal shavings had built up around the spider and were removed - it doesn't appear that this had damaged the voice coil, fortunately. The non-hump MI-11411 received some care from a speaker repair shop here in Dallas, Freeman-Tuell. In the past few months I've done what I can with these speakers. Cogent field coil horn speakers update#I'll update this thread as I'm able to devote time and funds towards the preservation of these speakers and cabinets I'll build for them. Subjective language, sure, but they're my ears. Dock Boggs, too, has reality given back to him. ![]() I've listened to these albums on a few different speakers and have never felt that I've heard them correctly.Įven through one of these speakers sitting on the ground there's life and presence in Frank Proffit's voice that belies the age and quality of the recording. Two records in particular have encouraged me to put in the work to get these speakers right - Frank Proffit's Frank Proffit of Reese, North Carolina (Folkways FSA-1) and Dock Boggs Legendary Singer & Banjo Player (Folkways FA-2351). Feeding it off the 16-ohm tap of one of my Altec 128B's, I can hear already why this speaker is as sought out as it is. Throughout the past week, I've taken time to listen to the MI-11411, treating it gingerly as I don't want to put any further wear on the existing tear. If not, I'll reach out to some gurus I've had contact with to see if they have any advise. I'll be working with a local shop that handles speaker repairs on finding solutions for preserving the original cones. It has a slight tear in the cone at the surround, but is in fantastic condition otherwise. The MI-11411 is in much better condition. ![]() The single capacitor, acting in lieu of a crossover, is bad - a new cap of the same value is arriving today. It looks like part of the cone had water damage at some point and the paper surround wlll need to be reinforced. It's missing one of its famous bumps, the others are pushed in slightly. The cones are intact, but they'll need some work. I would just have to wait until I'd have time to go and get them. And I certainly didn't want to ask anything more of my friend. I bit my nails until I got the text that he'd gotten them.Īs i wasn't sure of their exact condition, I didn't think it wise to ship them. I Venmo'd him the cash and prayed this thing worked out. I called a buddy from college who lived nearby and asked if he'd be willing to help me out - he was. ![]() Despite the distance between them and myself I contacted the seller and found out they were still available, somehow. The downside: the speakers were a few states over, in a suburb of Kansas City. Had I missed something, or had this somehow flown under the radar? A LC-1A (with the humps) listed in the collectible section of CL, and its predecessor, the MI-11411, listed under musical instruments. Cogent field coil horn speakers drivers#This one kicked back a few results that made me spit out my drink - RCA LC-1A drivers on craigslist at prices that seemed to be missing a zero behind them. I hope you'll forgive a little backstory here, but it's a necessary in getting to how I found a speaker I thought to be near extinction.Ī month back I was at work on a Sunday afternoon (as sometimes happens) and decided to kill a few minutes running a set of searches I run from time-to-time. ![]()
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