Thanks. I'm in a small bedroom so playing at very load levels is not really a need. Plus I usually listen to jazz and classical music with some classic bluesy rock. I'm thinking it probably will be good but if you feel you can talk me out if getting these John Blue JB3 models feel free.
Are these speakers fully compatible?
I have a 10 watt 300B tube SET amp with these specs:
Power output: <= 10W x 2, THD <= 3%, 1Khz
Frequency response: 16—38 Khz, -2dB
Output impedance: 8 ohms
Signal/Noise: >= 90 dB
I was thinking about getting a pair of John Blue bookshelf speakers for my small room and the speakers have these specs:
Efficiency : 87 dB / W / mImpedance : 6 OhmMax power : 30 W
Would I be better off getting a pair of speakers with a 90dB effiency or higher?
Power output: <= 10W x 2, THD <= 3%, 1Khz
Frequency response: 16—38 Khz, -2dB
Output impedance: 8 ohms
Signal/Noise: >= 90 dB
I was thinking about getting a pair of John Blue bookshelf speakers for my small room and the speakers have these specs:
Efficiency : 87 dB / W / mImpedance : 6 OhmMax power : 30 W
Would I be better off getting a pair of speakers with a 90dB effiency or higher?
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- 11 posts total
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>03-18-11: Spareribs Thanks. I'm in a small bedroom so playing at very load levels is not really a need. Plus I usually listen to jazz and classical music with some classic bluesy rock. I wouldn't assume that. Good jazz and classical recordings have a lot of dynamic range and I'd worry about clipped peaks. Out of curiosity I ran _Take Five_ through some Octave (the GNU Matlab clone) functions and found an 18.4dB crest factor on the right channel. Playing at a pleasant 85dB SPL with incoherent addition from the speakers (it's a classic pan-pot recording) implies 82dB from each. Applying typical draw down rates that suggests about 87dB 1 meter from each speaker. 87dB + 18.4dB = 105.4dB 1 meter from the right side. With 87dB efficient speakers that would take an amplifier that can produce 35W on sine waves which have a 3dB crest factor. |
I've never tested sound levels with my JB3's, and I'm sure I never will, but in a 10'x 10' office they provide all the volume I could ever use, whether I'm listening to Jordi Savall or Tom Petty. I know volume control position doesn't have much to do with anything but with my 10 watt EL84 amp I've never had it beyond 11 o'clock playing any kind of music. I went through several small monitors and the JB3's are the ones that stayed. They're extremely musical, the perfect size for my setup, front ported and they look great. Have you read the 6moons review? |
- 11 posts total