Ascend Sierra claims the 2EX is a
significant upgrade to the sierra-2, due to the new custom woofer produced by SEAS.
I'm also in the market for new speakers and trying to make a similar decision about which ones to buy - the Philharmonic BMR and the Ascend Sierra 2EX are in the mix for me. I do think that buying speakers that are directly marketed to consumers offers a much better deal. Markups at retailers typically double what they pay wholesale. That would tend to rule out the KEF R3, although production in China certainly lowers their labor production costs.
Salk's BMR Philharmonic and Ascend Sierra are both direct marketed and assembled in the US.
Dennis Murphy's version of the BMRs are assembled in China (cabinets) and Taiwan (crossover). He direct markets them. The reviews have been glowing.
I received an email today from Dennis Murphy, who has also contributed to this thread above. It sounds like his speakers are well built - at least he uses good quality crossover components and good thick braced cabinets that are damped.
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Hi Thanks for writing. Here are some answers to your questions:
1) We've run out of the current stock of BMR's, but will have another shipment arriving by March 1.
2) The crossovers are built by Bennic using the same quality components they use for Revel speakers. All of the capacitors are poly, including the large woofer capacitor. All of the inductors are air core except the large woofer coil, which is steel laminate to keep dcr as low as possible. All of the resistors are non-inductive. it isn't practical to change the brand of any of the components since the speakers arrive with the crossover installed. In any event, there would be no audible benefit in doing so.
3) The cabinets have a heavy cross brace and the front baffle is 1" thick. The damping material is a denim material that covers all of the cabinet walls and crossover. It's the most effective treatment I've found, and is absolutely crucial for properly damping the BMR midrange chamber. It's sold in the U.S. under various trade names, including Eco-Core.
4) The curved cabinets are only available in Taiwan.
5) Jim Salk can make either the current model BMR or the previous one. The previous BMR used ScanSpeak 8545-01 6.5" woofer instead of the SB Acoustics Ceramic, and had a 4th order acoustic crossover between the woofer and midrange instead of the current 2nd order. The new BMR is about 2 dB more sensitive than the prior model. The ScanSpeak woofer has slightly greater power handling than the SB Acoustic, but the difference is very small.
6) Once the new order of BMR's arrives, we could ship upon payment. It's 5 business days from Washington, D.C. to the West Coast. Best wishes, Dennis Murphy
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Here is a video comparing the Sierra 2EX to the much more expensive
Salk Silk ($3595) and Scansonic MB-1. (Salk charges $2400-$2600 to build the BMR Philharmonics.)
Hope this helps.