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In Reply to: RE: Questions about balanced and unbalanced interconnects posted by rick_m on January 19, 2015 at 09:16:20:
Thanks for this - I was not previously aware that internally balanced amplifiers loose power if fed with an RCA-to-XLR adapter and I would be interested to know why this is.
They don't necessarily lose power, they lose voltage gain. That's just due to seeing only half of the applied voltage.
Actually both statements are false unless the unit has poor Common Mode Rejection Ratio. If the ratio is high, the gain is the same using either input- RCA or balanced. Now if you apply half the input voltage, the amp will have 6 db less voltage output. That's not a gain issue- its simply not putting in the voltage in the first place.
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Follow Ups
- RE: Questions about balanced and unbalanced interconnects - Ralph 09:46:39 01/19/15 (6)
- RE: Questions about balanced and unbalanced interconnects - John Elison 12:30:32 01/19/15 (5)
- That's a common idea but rare in practice! - Ralph 13:22:41 01/19/15 (4)
- RE: That's a common idea but rare in practice! - John Elison 14:50:46 01/19/15 (3)
- There are plenty of fully balanced amps and preamps - Ralph 08:46:20 01/20/15 (2)
- RE: There are plenty of fully balanced amps and preamps - John Elison 10:48:34 01/20/15 (1)
- RE: There are plenty of fully balanced amps and preamps - Ralph 11:17:52 01/20/15 (0)