Ziphona MA 224 Riaa premp?!
Earpiece is a type of MM, at least I think so?
It should be checked in dataschet this turntable?
Let's move on,....
Hi,
Earpiece is a type of MM, at least I think so?
It should be checked in dataschet this turntable?
Let's move on,....
Hi,
Ziphona was the east german turntable maker. I used to service those many years back. There are some east german turntables worth keeping, but the MA-224 is really poor IMHO, most of them actually are. There are only a handfull of belt drive Tables that where international standard and the very last direct drive / linear tracking ones, but only the Top of the range, not the ones with plastic arms.
Check the cartridge, if it is the common east german MM pickup then use any MM Phono pre. If it is the Piezo Pickup then it needs a 1MOHm input impedance and is approximately equalised and line-level already.
The Piezo-Pickups have CS-XX (where XX is some number) written on them, the magnetic systems have MS-XX (where XX is some number) written on them.
Anything else, check the make/model of the cartridge.
EQ is determined by the LP, not cartridge or turntable.
Ciao T
What's the best RIAA preamplifier for turntable Ziphona MA 224?
Ziphona was the east german turntable maker. I used to service those many years back. There are some east german turntables worth keeping, but the MA-224 is really poor IMHO, most of them actually are. There are only a handfull of belt drive Tables that where international standard and the very last direct drive / linear tracking ones, but only the Top of the range, not the ones with plastic arms.
Check the cartridge, if it is the common east german MM pickup then use any MM Phono pre. If it is the Piezo Pickup then it needs a 1MOHm input impedance and is approximately equalised and line-level already.
The Piezo-Pickups have CS-XX (where XX is some number) written on them, the magnetic systems have MS-XX (where XX is some number) written on them.
Anything else, check the make/model of the cartridge.
EQ is determined by the LP, not cartridge or turntable.
Ciao T
Hi,
CS-29 is a ceramic cartridge, it was designed for 1MOhm input impedance and no equalisation or amplification. IIRC the output will be around 150mV or so..
This is an extremely low fidelity cartridge. The output will follow the LP Equalisation only very approximatly and have very large deviations from flat.
Back in my day we used to joke "RFT = Reicht Fünf Tage" (lasts 5 days before it breaks).
For the life of me I cannot imagine the path this record player must have taken to end up in El Salvador though.
Ciao T
CS-29 is a ceramic cartridge, it was designed for 1MOhm input impedance and no equalisation or amplification. IIRC the output will be around 150mV or so..
This is an extremely low fidelity cartridge. The output will follow the LP Equalisation only very approximatly and have very large deviations from flat.
Back in my day we used to joke "RFT = Reicht Fünf Tage" (lasts 5 days before it breaks).
For the life of me I cannot imagine the path this record player must have taken to end up in El Salvador though.
Ciao T
Riaa pream for CS-29?
Hi ThorstenL !
What RIAA preamplifie for CS-29 to recommend?
I made the RIAA preamp by this schematic, but in the secondary area (from 1 ... 3kHz) is the large distortion?
And this gives the preamplifier gain of about Au=60dB is too high.
thank you and cheers!
Hi ThorstenL !
What RIAA preamplifie for CS-29 to recommend?
I made the RIAA preamp by this schematic, but in the secondary area (from 1 ... 3kHz) is the large distortion?
And this gives the preamplifier gain of about Au=60dB is too high.
thank you and cheers!
Attachments
Last edited:
Hi,
No RIAA. No Preamp.
Just 1MOhm input impedance. Basically any high impedance will do. Like OPA2604, connected as buffer, 1MOhm resistor on input to ground.
But the CS-29 has very poor sound quality. Best not bother.
Ciao T
No RIAA. No Preamp.
Just 1MOhm input impedance. Basically any high impedance will do. Like OPA2604, connected as buffer, 1MOhm resistor on input to ground.
But the CS-29 has very poor sound quality. Best not bother.
Ciao T
Hi,
Yes, but remove the capacitor C1.
If gain is not enough you add some gain for the Op-Amp, but no EQ.
Another option I remembered is given on this page:
Stereo Pickups & Phono Cartridges : 1958 - today – Stereotonabnehmer
This should make the CS29 work with a normal MM Phono Stage, no idea how well, never tried it. Even in East Germany I stictly used Moving Magnet Cartridges! Piezo is very low quality.
Ciao T
Yes, but remove the capacitor C1.
If gain is not enough you add some gain for the Op-Amp, but no EQ.
Another option I remembered is given on this page:
Stereo Pickups & Phono Cartridges : 1958 - today – Stereotonabnehmer
This should make the CS29 work with a normal MM Phono Stage, no idea how well, never tried it. Even in East Germany I stictly used Moving Magnet Cartridges! Piezo is very low quality.
Ciao T
Hi
Here are the photos the piezo-pickups CS-29, and photos turntables Ziphona MA=224.
Which schematic is required to exit?
Why Mr.ThorstenL turntables Ziphona MA-224 with this we need the RIAA preamplifier than usual amplifier with gain of Av= (8 .. 10)dB and the input impedance of 1Mohm?
Thank you and cheers!
Here are the photos the piezo-pickups CS-29, and photos turntables Ziphona MA=224.
Which schematic is required to exit?
Why Mr.ThorstenL turntables Ziphona MA-224 with this we need the RIAA preamplifier than usual amplifier with gain of Av= (8 .. 10)dB and the input impedance of 1Mohm?
Thank you and cheers!
Attachments
Last edited:
Hi,
I know 1MOhm input buffer will work, because that is how they where used with the other east German Equipment.
Radio's, Amplifiers etc. all had inputs labelled "TA" for ceramic inputs that where 1MOhm, minimum capacitance.
The three resistor attenuators I do not know if they work well or not. But as you already have build a MM Riaa Pre, trying them would be easy. If it is still is not good, use the 1M input impedance buffer...
Ciao T
I know 1MOhm input buffer will work, because that is how they where used with the other east German Equipment.
Radio's, Amplifiers etc. all had inputs labelled "TA" for ceramic inputs that where 1MOhm, minimum capacitance.
The three resistor attenuators I do not know if they work well or not. But as you already have build a MM Riaa Pre, trying them would be easy. If it is still is not good, use the 1M input impedance buffer...
Ciao T
Hi,
No.
I have given all the information in previous posts.
If you use on line translation and you do not understand, please seek help from someone who speaks good enough english.
Ciao T
No.
I have given all the information in previous posts.
If you use on line translation and you do not understand, please seek help from someone who speaks good enough english.
Ciao T
Preamplifier for Ziphona MA 224 (CS-29)
Hi all!
I made this schematic saves preamp for piezo pickup CS-29 (Ziphona MA 224) and now everything is OK!
Excellent turntable to an amplifier can be heard now and enjoy music Dire Streits!
Cheers!
Hi all!
I made this schematic saves preamp for piezo pickup CS-29 (Ziphona MA 224) and now everything is OK!
Excellent turntable to an amplifier can be heard now and enjoy music Dire Streits!
Cheers!
Attachments
Last edited:
Hi,
Good it worked out in the end.
Ciao T
Hi all!
I made this schematic saves preamp for piezo pickup CS-29 (Ziphona MA 224) and now everything is OK!
Excellent turntable to an amplifier can be heard now and enjoy music Dire Streits!
Cheers!
Good it worked out in the end.
Ciao T
Circuit for buffer for ceramic pickup
Hi all!
I want to can this ceramic pickup I create a buffer with mosfet BS170 or similar with the input resistance of 1Mohm that I see with this buffer to turntable sounds?
Power supply to be Ucc = 9...12V
So please give a proposals circuit (schematic).
thank you!
Hi all!
I want to can this ceramic pickup I create a buffer with mosfet BS170 or similar with the input resistance of 1Mohm that I see with this buffer to turntable sounds?
Power supply to be Ucc = 9...12V
So please give a proposals circuit (schematic).
thank you!
Last edited:
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