CBS CD-1 track 1<\/li>\n<\/ul>\n <\/p>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/FFT-Spectrum-1-kHz-Metronoom-in-CD-100-NO_Dithered-20-98khz.png\")
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Then we added the \u00a0NOS module “14 Bit attenuated NOS bridge S-type” , it truncates 2 bits , why..? , I can’t find the signal attenuation<\/em><\/strong><\/p>\n![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/CD100_Metro_04.jpeg\")
<\/p>\n
\n- Blue – Left channel TDA1540 with Metronom + NOS<\/strong><\/li>\n
- Red – Right Channel TDA1540 with Metronom + NOS<\/strong><\/li>\n
- CBS CD-1 track 1<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/FFT-Spectrum-1-kHz-Metronoom-in-CD-100-Dithered-N.O.png\")
<\/p>\n
\n- Blue – Left channel TDA1540 with Metronom + NOS , the effect of truncating 2 bits more distortion<\/strong><\/li>\n
- Red – Right Channel TDA1540 with Metronom<\/strong><\/li>\n
- Philips Audio Signals Disc 1 track 15<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/FFT-Spectrum-1-kHz-Metronoom-in-CD-100-Dither-OS-vs-N.O.png\")
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\n- Blue – Left channel TDA1540 with Metronom + 4 x Over Sampled \u00a0with Philips SAA7030\u00a0<\/strong><\/em><\/li>\n
- CBS Records CD-1 track 5<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/FFT-Spectrum-_-CD-100-Metronoom-1-kHz-60db-Oversampled.png\")
<\/p>\n
\n- Blue – Left channel TDA1540 with Metronom + 14 Bit attenuated NOS bridge S-type , the effect of truncating 2 bits more distortion<\/strong><\/li>\n
- CBS Records CD-1 track 5<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/FFT-Spectrum-_-CD-100-Metronoom-1-kHz-60dB-NOS.png\")
<\/p>\n
<\/p>\n
Some information from \u00a0: https:\/\/nanocamp.de \u00a0\/ https:\/\/dindiki.com\/<\/p>\n
metronom 2.0 for TDA1540<\/em><\/strong> The metronome-module is used under the TDA1540 converter.\r\n<\/em><\/strong>\r\n\u2022\u00a0 Synchronized oscillators of the TDA1540<\/em><\/strong> \r\n\u2022\u00a0 Dynamic correction of the shift register<\/em><\/strong> \r\n\u2022\u00a0 Frequency compensation of the TDA1540<\/em><\/strong> \r\n\u2022\u00a0 Class A operation of the TDA1540<\/em><\/strong><\/pre>\n <\/p>\n
Often various internet modifications, operational amplifiers, superclocks and capacitors are mixed together indiscriminately, \r\nthis is not recommended. Or plug-in sockets for metronom modules, our attenuated NOS-bridge and also for op-amps are used. \r\nThis is always connected with disadvantages, because a contact resistance at the plug-in contacts does not remain constant to the amplitude.\r\nAfter a successful upgrade with metronom modules under the analog converter, and an extended test phase, \r\nthe analog converters can also be soldered in the metronom module. <\/em><\/strong><\/pre>\n <\/p>\n
Some info about OpAmps Modification\r\n\r\n\"The expected result depends on the harmonisation of the individual components in the appliance. Our components are selected to work together. If individual points are omitted or disregarded, you will not achieve the intended result.\r\n- solder all components firmly in place and do not use plug-in sockets.\r\n- this also means for audio operational amplifiers, do not use sockets.\r\n- Do not increase the capacitance values (F) of the capacitor values calculated by the manufacturer.\r\n- favour powerful ultra-fast soft-recovery or Shottky rectifier diodes - remove any film capacitors connected in parallel to the new diodes.\r\n- Do not install film capacitors in parallel with the primary charging capacitors in the power supply unit.\r\n- the improvement on TDA1540 and TDA1541 converters depends to a large extent on the metronome sockets installed under these converters.\r\n- avoid a significantly higher sampling rate than twice the frequency of the audio tape in streaming applications, this has no advantage and requires the introduction of dither in digital mastering to conceal re-quantisation noise (not quantisation noise).\r\n- the recording time of the components used together is 100 hours.\"<\/strong><\/em><\/pre>\n <\/p>\n
shottky rectifier diodes<\/p>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/CD100_Diode.jpeg\")
<\/p>\n
All Modifications<\/p>\n
![\"\"](\"https:\/\/www.bramjacobse.nl\/wordpress\/wp-content\/uploads\/2024\/11\/CD100_Mods-scaled.jpeg\")
<\/p>\n","protected":false},"excerpt":{"rendered":"
On Request , if i could build in some modifications in a CD 100 TDA1540 Metronom 2 \u00a0modules 14 Bit attenuated NOS bridge S-type NE5532 Replacement AD825 & OPA 604 Nichicon Muse Bi-Polar Caps...<\/p>\n","protected":false},"author":1,"featured_media":14687,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[69,8,121],"tags":[],"class_list":["post-14671","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cd-100","category-measurement","category-philips"],"yoast_head":"\n
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