Question?

metronom 2.0 for TDA1540

The metronome-module is used under the TDA1540 converter. In the second version, the module with a lower overall height is easier to use in a small installation space. Due to thinner pins, the board does not need to be re-drilled in some CD players. There was nothing to improve on the tried and tested circuit of the predecessor.

•  Synchronized oscillators of the TDA1540
•  Dynamic correction of the shift register
•  Frequency compensation of the TDA1540
•  Class A operation of the TDA1540

2 metronom 2.0 14 Bit 89,- EURadd to cart

metronom TDA1540
Installation
•  Desolder TDA1540 or existing socket
•  Solder in metronom-module
•  Remove components at pin8 and 9 in the CDP
•  Insert the TDA1540 into the modules

metronom TDA1540

Bottom view


Notes
A short circuit between pin7 to 8 or 9 lead under operating voltage to the destruction of the module. All modules undergo an electrical test before shipping.
The module can be used with or without digital filter.

Sometimes it is omitted to remove the mentioned components at pin 8 and 9 in the device, often a capacitor of 820pF. If these components are left, they will only notice a minor change in the output signal. Often various internet modifications, operational amplifiers, superclocks and capacitors are mixed together indiscriminately, this is not recommended. Or plug-in sockets for metronom modules, our attenuated NOS-bridge and also for op-amps are used. This is always connected with disadvantages, because a contact resistance at the plug-in contacts does not remain constant to the amplitude. After a successful upgrade with metronom modules under the analog converter, and an extended test phase, the analog converters can also be soldered in the metronom module.

metronom 2.0 for TDA1541

The metronom-module is used under the TDA1541 converter. In the second version, the module with a lower overall height is easier to use in a small installation space. Due to thinner pins, the board does not need to be re-drilled in some CD players. There was nothing to improve on the tried and tested circuit of the predecessor.

•  Synchronized oscillator of the TDA1541
•  Dynamic correction of the shift register
•  Class A operation of the TDA1541

1 metronom 2.0 16 Bit 68,- EURadd to cart

metronom TDA1541

Bottom view


Installation
•  only TDA1541A, insert the solder bridge at the bottom
•  only TDA1541A, Interrupt the trace at pin 4 in the CDP

•  Desolder TDA1541 or existing socket
•  Solder in the metronome-module
•  Remove components at pin16 and 17 in the CDP
•  Insert TDA1541 in the module

metronom TDA1541

Bottom view


Attention
For Marantz CD94, CD94MKII and Philips CD960, LHH.. the transistor Q537 near the digital filter SAA7220 on the receiver board PD16 must be removed before installing the metronom socket. For Marantz CD40 and CD50, transistor 6531 (BC818) near digital filter SAA7220 must be removed. In the Philips CD880, transistor 6318 (BC338) near digital filter SAA7220 must be removed.

Notes
A short circuit between pin15 to 16 or 17 lead to the destruction of the module under operating voltage. All modules undergo an electrical test before shipment.
The module can be used with or without digital filter and in devices with one or two TDA1541.

Sometimes it is omitted to remove the mentioned components at pin 16 and 17 in the device, often a capacitor of 820pF. If these components are left, they will only notice a minor change in the output signal. Often various internet modifications, operational amplifiers, superclocks and capacitors are mixed together indiscriminately, this is not recommended. Or plug-in sockets for metronom modules, our attenuated NOS-bridge and also for op-amps are used. This is always connected with disadvantages, because a contact resistance at the plug-in contacts does not remain constant to the amplitude. After a successful upgrade with metronom modules under the analog converter, and an extended test phase, the analog converters can also be soldered in the metronom module.


no oversampling bridge
OP-amp metronom