Thanks Joachim. I have not yet played with the new switch extensivly since I'm still in the process of fine tuning the ground concept etc.. With the previous incarnation of the Paradise I did settle for 1k load as the best compromise for my Benz Ruby 3. If it was only for this cartridge I wouldn't need anything else but the switch was laying in my drawer collecting dust so I decided to build something future proof - I may start to collect exotic MCs at some point in time. 😉
Best Regards
Sven
Ok, so you are using the Benz.
I mostly use also 1kOhm.
My Atlas works best on something around 300 Ohm though.
That also depends on the design of the input stage in my opinion so a different stage may need a different resistor.
I also found that the type of resistor is audible not only the value but that are minor details.
I mostly use also 1kOhm.
My Atlas works best on something around 300 Ohm though.
That also depends on the design of the input stage in my opinion so a different stage may need a different resistor.
I also found that the type of resistor is audible not only the value but that are minor details.
RollE2k, it occurred to me that this may sound a bit strange. To clarify - yes of course I can calculate the current flowing through R5,6,7,11 based on the voltage and the resistance. But I don't know how these values contribute to the overall current the buffer pulls. Appreciate your advice.I'm afraid I can't
Could you be so kind please?
R5 =0,1678V
R6 =0,0636V
R7 =0,1658V
R11=0,0634V
Many Thanks
Sven
Thanks
Sven
I will be able to test that - the "Alt."(ernative) setting of the switch is meant for experimentation. Currently I have 1.05k Vishay S102K metal foil resistors set in while all the other settings use non magnetic Vishay-Dale CMF-55-143, including the "normal" 1k setting. Looking forward to try and see whether I hear any differences.
Regards
Sven
Sven: As long as you have used the values in the calvin guide (R5/R7 = 6R8 and R6/R11 = 2R2) then you just use the formula I = U/R, in other words to get the current over a specific resistor just divide the voltage (U) with the resistance of the resistor (R), in the case of R6, 0.0636/2.2 = 0.0289, which means that the total current is 28.9mA over the positive half of the circuit. With the case of R5, 0,1678/6.8 = 0,02467, which means the current there is 24,67mA.
At least i see nothing wrong here. You run blow 30mA total current over the buffer, so i think you tops would end out with around 110-115mA total current per channel including buffers. Maybe somebody else may know better than me what can be wrong with the leds lighting up slowly.
At least i see nothing wrong here. You run blow 30mA total current over the buffer, so i think you tops would end out with around 110-115mA total current per channel including buffers. Maybe somebody else may know better than me what can be wrong with the leds lighting up slowly.
Sven: i re-read all your posts, and the total current is R6 to positive rail and R11 to negative rail. Anyway, i don't see any trouble regarding the buffer, or CCS total current.
re post3552, I asked this morning:
what are the clips on the heatsinks.
Can you supply details?
But my post went missing.
what are the clips on the heatsinks.
Can you supply details?
But my post went missing.
Andrew: I'm sorry I don't know - I got them with the group buy
David: This particular switch breaks before it makes. I'm a bit reluctant to use it with everything switched on. Guess I'll continue to turn down the volume first. 😉
Regards
Sven
David: This particular switch breaks before it makes. I'm a bit reluctant to use it with everything switched on. Guess I'll continue to turn down the volume first. 😉
Regards
Sven
Thanks, I missed all that, because I started reading this Thread when it was linked from the Buffer Thread.
The input of the Paradise is always loaded with a static resistor and has a base current trim.
So maybe there is no noise when switching in the external loading resistors.
I never thried it so i am curious what happens.
So maybe there is no noise when switching in the external loading resistors.
I never thried it so i am curious what happens.
Hi,
typically a resistive input load switches without issues, but not a cap.
Turning down the volume should be fully sufficient.
I don´t see a need to switch off power alltogether.
jauu
Calvin
typically a resistive input load switches without issues, but not a cap.
Turning down the volume should be fully sufficient.
I don´t see a need to switch off power alltogether.
jauu
Calvin
Im trying to dial in a low output cart (Yam MC1 .20), still working on getting input resistor correct. But someone mentioned trying a 100pF cap parallel to input.
Does that mean i would need 4 caps, 2 for each input??
What effect does this have? I am still trying to get decent volume/dynamics.
Thanks
Does that mean i would need 4 caps, 2 for each input??
What effect does this have? I am still trying to get decent volume/dynamics.
Thanks
Given it's a Jap cart don't they run the voltage output test at a higher speed, so in relaity it's close to 0.16mV output.
ype MC cartridge
Armature Air core coil plate laminated aluminum thin film (layer 2)
Magnetic circuit Yokuresu, dual magnetic circuit differential
Conversion characteristic Differential manner
Vibration system One-point suspension
Stylus Diamond 0.1mm special elliptical stylus angle
Cantilever High-purity beryllium, tapered pipe
Equivalent mass vibration system 0.25mg
Braking system Shear bond braking system I seat
Housing case Rigid die-cast aluminum structure
Output voltage 0.2mV (1kHz, 5cm/sec, Peak45 °)
Channel balance More than 28dB (1kHz)
more than 25dB (10kHz)
over 20dB (20kHz)
Electrical impedance (Within 20% pure resistance, balance) 30Ω ± 20%
Playback frequency range 10Hz ~ 20kHz (capacity: 60kHz)
Needle pressure 1.8 ± 0.2g
Static compliance 38 × 10 -6 cm / dyne (twenty-five ° C.)
Dynamic compliance Eleven × 10 -6 cm / dyne (twenty-five ° C.)
Vertical tracking angle 20 ° ± 2 °
Needle tip Special elliptical diamond stylus 8 × 40 micron
Weight MC-1X: 18.5 ± 0.1 g
MC-1S: 7.8 ± 0.1 g
Needle exchange Body replacement (\ 31,500): MC-1X
MC-1S: body replacement (\ 24,500)
ype MC cartridge
Armature Air core coil plate laminated aluminum thin film (layer 2)
Magnetic circuit Yokuresu, dual magnetic circuit differential
Conversion characteristic Differential manner
Vibration system One-point suspension
Stylus Diamond 0.1mm special elliptical stylus angle
Cantilever High-purity beryllium, tapered pipe
Equivalent mass vibration system 0.25mg
Braking system Shear bond braking system I seat
Housing case Rigid die-cast aluminum structure
Output voltage 0.2mV (1kHz, 5cm/sec, Peak45 °)
Channel balance More than 28dB (1kHz)
more than 25dB (10kHz)
over 20dB (20kHz)
Electrical impedance (Within 20% pure resistance, balance) 30Ω ± 20%
Playback frequency range 10Hz ~ 20kHz (capacity: 60kHz)
Needle pressure 1.8 ± 0.2g
Static compliance 38 × 10 -6 cm / dyne (twenty-five ° C.)
Dynamic compliance Eleven × 10 -6 cm / dyne (twenty-five ° C.)
Vertical tracking angle 20 ° ± 2 °
Needle tip Special elliptical diamond stylus 8 × 40 micron
Weight MC-1X: 18.5 ± 0.1 g
MC-1S: 7.8 ± 0.1 g
Needle exchange Body replacement (\ 31,500): MC-1X
MC-1S: body replacement (\ 24,500)
Thanks, .16 wouldn't surprise me, I am at about 90% volume but sounded pretty darn good with a pair of PRP 370r resistors on input. Just have to have super quiet vinyl. Using passive Salas Hotrodd DCB1 preamp.
Ill try the 100pF caps. Thanks...
the S/N coming off the vinyl is not affected by where to turn your vol pot for comfortable listening.