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step up -cartridge match
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Old 1st October 2007, 10:10 AM   #1
hal1 is offline hal1  Israel
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Join Date: Aug 2007
Default step up -cartridge match

dynavector karat ruby--info:

Type: Very small size moving coil
Output voltage: 0.2mV / 1kHz / 5cm/sec
Frequency response: 20 to 50,000 Hz
Channel balance: 1dB (1kHz)
Channel separation: 20dB (1kHz)
Compliance: 15cu
Impedance: R = 30 ohms, L = 80 microhenry
Stylus: 0.1mm x 0.1mm, line contact naked diamond
Cantilever: 0.4mm x 0.4mm x 2.5mm, oblique cut solid ruby
Vertical tracking angle: 20-degrees
Tracking force: 1.5g +1.0g C0.3g
Height: 17.5mm
Weight: 5.3g

and denon au300lc step up:

Boosting ratio: 1: 10
Conformity cartridge impedance: 3~40
Primary, secondary impedance: 40: 4k
Frequency range: 20Hz~50kHz
Size: W50H37D110mm
Weight : 0.26kg
Will it be a good match? ( i have a cj pv10a mm only)
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Old 1st October 2007, 12:39 PM   #2
SY is offline SY  United States
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Location: Chicagoland
step up -cartridge match
That will take you about 20 minutes to find out! Plug it in and listen, you won't break anything.

With MC transformers, it's often worthwhile to experiment with the secondary loading for best transient response. Set up a square wave generator and a voltage divider to give a millivolt of output at the same source impedance as the cartridge (in this case, 30 ohms), and feed that to the transformer. With a scope connected to the secondary, experiment with load resistors, caps, and Zobels to get the best risetime without overshoot. Attention to this can transform (as it were) a decent transformer stepup to a great one.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
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