Lampizator installed in summer
This is a player that looks and feels like a typical "bolid" Heavy and
solid, large, macho machine. But on close inspection - the weight comes
from the cast-iron cheek additions. And the heavy floor plate. So the
aspect is a fake one.
The PCB is large, typical messy Marantz. Not very clean. The DAC is far
far away from RCA outputs, indicating tons of garbage in between.
The mechanism is a well known CDM1 mk2. The regulators of supplies sit
on a heatsink, far far away from receiving parts. Not too good.
The TDA1541A-S1 dac is of course a good one.
Without hesitation I lampized it with a I/U conversion by 80 Ohms and
6H1P tubes. the result is as expected - a very good one but not as
great as the weight. This player set the expectations so high, that it
disappoints a little at the end. Later I found that the 6N2P
(6H2P) tube is MUCH better for this dac chip.
Tuning of Marantz CD-80
This player does not require cap modifications like cheap Marantz CD40,
Marantz CD-50 and
60. It is already good in the cap department. Of course it may be
fully blackgated and it will benefit. I rank this player very high,
although a touch below the Philips CD880 and Sony 227ESD. It is about
Revox 226/126 and Marantz 94 MK1.
Below - the Marantz CD80 is second from top. On top - the 94MK2.
Comparing the Marantz CD80 to his
Two competing Marantz'es side by side. Which one wins ???
The marantz in companion of very strong contenders to the throne.
Sony 227ESD and the old king - Grundig Fine Arts 9009 on the bottom.
The main PCB - huge one, but quite chaotic. DAC is tooo far from
RCA outputs. Long cables are necessary addition for lampization.
Our well known transformer, similar to Philips CD-880.
Mechanism - as well - Philips CDM1MK2 like in the grundig 9009,
cambridge CD3 and Philips CD880.
Laser assembly of CDM1 MK2 in
Very nice ELNA premium capacitors in main power supply.
The DAC has already the good MKT caps around (blue boxes) for
decoupling. Only 100nF but nevertheless good. 220 nF or even 470 nF
would have been better.
New Lampizator power supply installed on the middle partitioning
Lampizator's Noval sockets installed ...
SOUND of lampized CD 80
The amount of circuitry that
the simple lampizator bypasses rewards us with great sound improvement.
The stock form CD80 is not impressive at all.
After lampization, it is as good as any other TDA1541A player. I did
not do the NOS mod but of course I should have done it. It would
improve the player further step up.
To further improve it, for tuning of the Marantz, I
suggest not to change caps but to buy a
bag of 20 tantalums something like 47uF by 16 V and on the bottom of
PCB bypass every electrolyte there is, except of course the useless
Lampizator on floated pins 6/25 will give as much improvement as the
whole tuning of the PCB.
An icing on the cake would be the clock, maybe not necessarily the 200
GBP one from Europe, on ebay there are 30 USD clocks from china. They
are good enough. The fact that the clock has its own power supply and
does not contaminate the PCB with digital hash has huge benefit, even
if jitter issue is not much imporoved.