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Dear Fellow SC IVA owners

Dear SC IVA owners. I recently made some improvements to my SC IVAs that were transforming when all were added up together. I thought I'd share these and hope others contribute to what improvements they have made. 1. Added Sunfire IV subwoofers set at the lowest crossover point and very very low volume. This improved midrange noticeably by opening it up while the bass went a bit deeper. Spread speakers out from each other nearer sides of room so at least 2.5 feet farther from each other with major improvement in detail and clarity. Added symposium ultra platforms under each speaker with Walker points under the platforms. Major improvement again. All of these transformed my sound from very good but slightly cloudy to very clear with even deeper and tighter bass, a scary musicality rare in any component and a top to bottom coherence that this speaker is known for. I hope someone else has had similar success and perhaps some other new tips. All of these improvements except the subwoofers came from suggestions from other Audiogon members.
jonathanhorwich

Showing 3 responses by jonathanhorwich

jonathanhorwich OP
13 posts
 
Thank you all for your excellent responses. So it is clear (whether right or wrong) I added the subwoofers not to extend bass (it was already extended and more importantly of very high quality, which characteristic I have found rare in most speakers) but because my engineering friend told me when he did this to his SC IVAs the midrange improved. And sure enough when I implemented subs, it improved the mids. I do not have the SC IVAs bass cut off. I just added the subs in parallel out of the amp and have the smallest amount of gain and the lowest crossover setting. The result was better. However, the biggest change occurred when I put the Symposium platforms under the speakers with Walker spikes under those. And of course keeping the speakers wider apart. Rrog said something interesting about being close to the back wall. I am going to try that. I'm five feet out now. Does anyone else have experience with this? Most speakers are better a good amount off the back wall. SC IVAs may be different. (I know one thing, even if not optimumly set up, and mine are not optimum yet at all, recent changes have made my set of SC IVAs sound phenomenal. Something about this speaker is amazing.) Jonathan
jonathanhorwich OP
13 posts
 
Pryso, thanks for this data. Yes, I believe your basic concept is the answer. Move the speakers bit by bit until you achieve the highest quality or balance. Each room/equipment relationship is different. I know one thing. My speaker are in the world class realm now with recent changes including a clarity and detail which I did not have before. I have more work to do though. And the musicality is not only still there, it has increased. (Yes, I am on twice a week now with the Jazz program. Friday/Sunday at 7pm unitl 9pm EST. NPR affiliate called Robinhoodradio.com. I think you'll enjoy it. All nonprofit. Just finished preparing tomorrow night's show. Jonathan
jonathanhorwich OP
13 posts
 
Dear Rrog, I have no idea why adding subs with no crossovers improves the mids, but it does. I put on JL Audio subs crossing over very very low at 25Hz with very little volume (barely on) and the mids opened up and are cleaner and clearer. And the bass is slightly extended. The JLs match well. I have no idea how this can be and would never try to explain or defend it. But I hear it and so does my recording engineer associate who taught me this. I'm so used to it that when I try the system without the subs I don't like it nearly as well.
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