Aug 23rd, 2011, 12:42 | #1 |
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+4dBv or -10dBu?
技术问题, 单端口line level都是-10dBu, 想知道一般Consumer hifi器材的平衡接口是+4dBv还是-10dBu? 器材的spec上没有标,有没有办法测出来? 如果解码模拟出口XLR出来是+4dBu的,进W4S STP-SE前级XLR input,如果W4S用的是-10dBu的,会不会有问题?据说会overload? |
------------------------------- You Cannot Be Serious! |
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Aug 23rd, 2011, 17:56 | #2 |
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Aug 23rd, 2011, 23:31 | #3 |
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Aug 28th, 2011, 12:07 | #4 |
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Aug 28th, 2011, 12:18 | #5 |
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Aug 28th, 2011, 15:55 | #6 |
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Aug 28th, 2011, 17:43 | #7 | |
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引用:
Spec在这里, http://spl.info/hardware/monitor-con...fications.html |
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Aug 29th, 2011, 14:00 | #8 | |
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引用:
Special +4/-10 Edition: More than you want to know about how dB's work http://www.sweetwater.com/expert-cen.../d--04/14/2000 |
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感谢 hugoo 此篇文章之用户: |
silent_fish (Aug 29th, 2011) |
Aug 29th, 2011, 14:21 | #9 |
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Aug 29th, 2011, 16:10 | #10 |
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Then if set both DAC2/SPL to +4dBu, are you getting optimal performance from ModWright amp, comparing to other settings?
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Aug 29th, 2011, 16:31 | #11 |
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Yeah, as they say it's better to keep the line as hot as you can (without causing distortions) and only do attenuation at the last stage... in this case, at the SPL pre-amp.
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Aug 29th, 2011, 22:46 | #12 |
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嗯,好像看懂了。 那用个-10dBV的pre-amp去feed一个+4dBu的amp,会是什么结果? |
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Aug 30th, 2011, 12:30 | #13 |
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Thanks Nattawa, very professional! I am using w4s stp-se which is a passive pre-amp with buffer, feed by an Apogee pro DAC with high output (over +4 for sure), drive a active pro monitor with +4db input sensitivity, sounds pretty good to me. If I use SPL, it sounds "aggressive" sometimes, and volume had to be kept down to very low settings, which can be a bad thing as you said.. |
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Aug 30th, 2011, 13:26 | #14 | |
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From its description, it's kind of passive-active design, when volume is <63, it's passive (no gain), when >63, gain stage kicks in. Its volume control uses only resistors and relays, I was told that it's better than a chip or volume pot, that's all I know about it technically |
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