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  #31  
Old 09-03-2019, 11:03 PM
Parabellum Parabellum is offline
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I am still side looking at speakers that would be a worthwhile upgrade for my Mani-2 Signature and I have found two interesting Dynaudio:

Newest Contour 30, 2.5 ways
Older Focus 380, 3 ways

I know the limited basics about impedance and dB but I would be curious how the two models I am looking at would behave with my amplifier. More specifically, would these two models be easier to drive than my Mani-2 Signature according to the specifications.

Mani-2 Signature
Two-way, reflex-loaded, magnetically shielded, stand-mounted loudspeaker. Drive-units: 1" (25mm) metal-dome tweeter, two 7" plastic-cone woofers. Crossover frequency: 4kHz. Frequency response: 29Hz-20kHz ±3dB. Sensitivity: 85dB/W/m (2.83V). Nominal impedance: 4 ohms. Maximum sound pressure level: 110dB before dynamic compression. Amplifier requirements: 40-200W (4 ohms).

Contour 30
Sensitivity: 87dB (2,83V / 1m)
IEC Power Handling: 300W
Impedance: 4 Ohms
Frequency Response (±3dB): 32Hz – 23kHz
Box Principle: Bass Reflex Rear Ported
Crossover: 2½ way
Crossover Frequency: (300) / 2200Hz
Crossover Topology: 2nd order

Focus 380
Sensitivity: 88 dB
IEC Power Handling: > 300 W
Impedance: 4 Ω
Frequency Response: 35 Hz – 23 kHz (± 3 dB)
Box Principle: Bass Reflex Rear Ported
Crossover: 3 way
Crossover Frequencies: 460, 2600 Hz

All of these 3 models have a 4 ohms nominal impedance. But the dB rating being higher on the Dynaudio suggest they would be easier on the amplifier. An increase of 3 dB is said to double the sound output, then would an impedeance of 85 dB (M2S) to a 88 dB (F380) be twice as easy to drive? Or, if I plug a pair of F380, would it require half of the power that was needed with my Mani-2 Sig for the same sound output level? I am not sure it works that way so I am asking the pros.
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  #32  
Old 09-04-2019, 01:51 PM
Jack in Wilmington's Avatar
Jack in Wilmington Jack in Wilmington is offline
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You could also try the Contour S3.4 or S5.4

They may be better than the 30 or the 380. The S5.4 is a 3 way if you prefer that over the 2-1/2 ways.
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Speakers........Dynaudio Contour 1.8 Mk II
Amp...............Pass Labs X150.5
PreAmp..........Cary SLP-03
Sources..........Music Hall MMF 9.3 Walnut w/ Goldring
Eroica LX MC Cartridge
Phono Pre...…..Sutherland Insight

CD Player Rotel RCD-1072
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  #33  
Old 09-07-2019, 11:25 AM
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steve59 steve59 is offline
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I've been reading several posts from owners of the c20-30-60 that upgraded from older dynes and are disappointed with them. Try to get a pair that's already broke in before judging the contours.
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