Originally Posted by 13ege
Is there any other difference besides diamond tweeters between new series of be20 and the older one? Is there an option to upgrade it to diamond tweeters later?
- Usher's global site says they are 4ohms, Usher USA says it's 8ohms. Which one is true?
-I'll probably drive them with a McIntosh Amp. MA7000 is my first choice. This 2x250w amp will be enough for be20s or not? If not, I'd like to hear suggestions.
You may draw different perspectives from various Usher speaker owners, and YMMV, but in general, for the BE-10s, BE-20s and BE-718's:
1. Yes, there are physical/scientific differences between the "BE alloy" drivers and the "Diamond alloy" drivers, but the sonic differences may be subtle, depending on your associated electronics. Some listeners report the Diamond alloy driver is "smoother or slightly recessed" as compared to the BE, but others believe perhaps too much so. A lot depends on the amp/pre etc.
2. I have heard/read that Usher will replace the BE-718 alloy drivers for Diamond alloy drivers for free. But some, as I, who have the BE alloy tweeters (I have the BE-718s) feel this speaker already strikes a proper balance in favor of open/air realism, versus being too bright.
3. I don't have BE 20's, so I can't answer the 4 ohm versus 8 ohm question.
4. The general feeling is that an amp with 250wpc of clean power, with sufficient headroom, amperage and damping, would be a minimum to derive the full SQ potential from these speakers. Many report a clear SQ improvement with 300wpc to 600wpc. I personally would not go with less than 300wpc.
Hope this helps.