The Auricap and Kimber caps are essentially the same, both are good. The Mundorf's are excellent, but probably far more than you want to spend. I think the Sonicap's are very good to excellent and if you bypass the high frequency caps with their .1uF Platinum caps I believe you may find yourself in heaven. All of the above sound better than Solen's to my ears.
9 responses Add your response
Garlic no garlic, this is a case of personal opinion, I can say that I've heard some of the bunch, and I don't like Sonic caps, hard and etched. Kimbers I liked, Solens are good low priced but then you already have that, Auricaps not heard, Theta's too long ago and the Mundorfs I've heard, not Silver Oil are good.
I just replaced caps in my RBH Signature speakers. They came with 250v Solen's. I replaced them with 630v Clarity PA's. (their best) I was surprised how smooth the Clarity were. Also the Clarity are a real bargain. I purchased them at e-speakers.com
Read this amazing page to help you decide which cap to purchase: http://www.humblehomemadehifi.com/Cap.html
Have you seen the Obbligato Premium Capacitors? I haven't heard them. But I do agree it is a preference so no real wrong or right here.
Solen are fine for bass. I wouldn't use them for midrange or highs in the crossovers. The Mundorfs are terrific as mentioned above.I like the Sonic Caps also. I found their sound slightly cool but open. The North Creeks have a good sound both the Crescendo(warm) and Harmony caps. The Crescendo is tweakable just by reversing the inputs.
None of these caps are bad. Unfortunetly the only way to know if they work for you...is to experiment.
Thank you for your feedback. I realize this is a subjective question to ask. Some have suggested North Creek Crescendos. I've heard good things about them, but the cost is $430 for my project, hence putting it out of my price range. The Obbligato's look interesting, but there isn't much information aside from their website. I'm leaning toward Kimber caps. I think they're a safe choice and reasonably priced. Thanks again! -Mark
I have done a fair bit of experimenting with DQ's, which are IMO still very competitive with many current designs from an overall "listenability" perspective. I've found their main weaknesses to be somewhat "soft" highs and a bit of a suckout in the low mids.
If your budget is fairly limited, my recommendation would be to spend the money on addressing those issues with better mid/tweeter section caps and skip, for now, any changes to the woofer side.
The low end exhibits a bit of rolloff in comparison to many newer speakers simply by virtue of it's sealed enclosure vs. the trend toward ported "boom boxes", but it IS tight and melodic - as long as you're giving them plenty of power. So I don't think you'll see much improvement there by replacing caps - and it's certainly not where the bang for the buck is on a budget. If you're happy with the mid/high upgrades you could later contemplate replacing the old Advent woofers with something more state of the art.
One additional tweak to consider if you're running them with grills on is to damp them by placing a "quasi-triangular" strip of Dynamat along each side of the grill (on the expanded mesh inside) from the top down to just above the woofer enclosure. You want to keep the Dynamat's shape as wide as possible without "interfering" with the tweeter and midrange drivers' normal horizontal dispersion patterns.
Then place another strip across the grill near the bottom (well below the woofer). Then glue thick felt onto the dynamat to prevent acoustic reflection.
The DQ grill was a cosmetic nod to the Quad's design, which was a favorite of Jon Dahlquist, but it's a sonic problem that serves little purpose other than look cool (although it does protect the speaker really well from toddlers). Doing this mod will significantly reduce coloration in the mids and highs, and allow more bass energy to propagate rather than be absorbed.
Hi Opalchip, I agree the DQ grills are a ridiculous cosmetic affair that do more harm to the sound than anything. The Dynamat suggestion is interesting. I like the idea of controlling vibrations, but I haven't noticed any noise coming from the grills. I have noticed an air-flow "wheeze" coming from the seal around the binding post area in the back. I wonder if others have had this problem. I'll definitely use rope putty to seal everything tightly. I'll also use felt tape to completely cover the midrange/tweeter baffle to reduce diffractions.
This current project is a precursor to a larger project I have in mind. I'd like to build a DQ-20i/Alon IV hybrid with an attractive wood enclosure and a minimal grill. For the time being, I need to stay focused on getting my crossover back together! Thanks again for all the feedback! -Mark