Luxman C-05

october 1982

1988+

Quite a long production run - almost Accuphase-like !

First presented in october 1982 in Japan (as the DAD input recalls) as replacements for the C-300 and M-300.
Still very good looks and, of course, typical LUX quality - but we already are very near to ALPINE ownership : if the first batches of C-05 were T-tagged by LUX, later ones, most of the total production run, were all T-tagged by Alpine.

The C-05 is fully dual-mono, with Duo-ß circuits and Plus-X power supplies, superlative componentry, housed in non-magnetic and copper-plated aluminium chassis.

The pre-production C-05 had a peculiar twist :
besides a phono and phono+subsonic input position which was carried onto the production model, the DAD/Aux input could also be switched with a subsonic. What subsonic-inducing warp could be present in a CD is anybody's guess :) That position was subsequently changed for a regular "line".
Also, the third Phono 2 position was initially set at 47kOhm but later changed to 50kOhm.

According to some owners, the C-05 isn't the super topper the M-05 is and there is "something slightly not quite right" with its sound signature... Maybe a problem with some production runs ?
Nevertheless available in some markets until the very late 1980s : Alpine obviously had "large" stocks inherited from the Luxman product planning :).

The day my current ES and pre-Esprit separates fall apart (slim chance for the latter), I think I'll go for a C-5000a with an M-05 - and a C-05 on the side for coherence !

Luxman C-05 specifications
Title	Value
Output :	1V / 32 Ohm nominal
Output :	18V maximum
THD :	< 0,005% (MM, 1V output)
	< 0,01% (MC, 1V output)
	< 0,002% (line, 1V output)
S/N ratio :	> 80dB (MC, IHF-A, 250µV input)
	> 90dB (MM, IHF-A, 5mV input)
	> 110dB (line, IHF-A)
Inputs :	phono MC (100µV / 50 Ohm or 100 Ohm)
	phono MM (2mV / 50kOhm)
	tuner / aux / DAD (150mV / 47kOhm)
Phono overload :	250mV (1Khz, RMS)
Frequency response :	20Hz...20Khz (±0,2dB, phono)
Frequency response :	2Hz...100Khz (±0,5dB, line)
Subsonic filter :	??
PC :	17W max.
Dimensions :	46 x 13 x 44,2 cm
Weight :	11kg.
Accessories :	optional rack handles
Accessories :	optional wood enclosure
List price :
380,000¥ (1982-1985)

Luxman C-05 : 3 topics
(last updated topic shows up first)

anyone know this? (7)last updated by Dalplex - 01/01/2012, 14H32 Open this topic in TVK Talk
- #1
  
  Dalplex
  
  17/05/11
  16H16
  
  i was laughing while i was reading the last paragraph of C-02's introduction regarding the wiring of C-02.
  
  let us take a look of this, what do you think?
  
  have fun
- #2
  
  Shaggy_NL
  
  05/07/11
  18H33
  
  I see that the sidepanels are going all the way to the back and beyond the back-plate. And at the front, there are those side strips.
  
  This is the Lux part of the forum and the last one was a C-02. This looks like a Pre-amp again, so I think this is a Luxman C-05.
- #3
  
  Unda Maris
  
  06/07/11
  15H14
  
  Yes a C-05. The top side of the PCBs looks much better (but as always the top side is for the catalogs, typical Asian mentality).
  
  What a pretender ! On the top side it looks like short/logical signal path, but on the bottom it is pure chaos ...
  The Sony TA-E88B and the earlier Sony preamps shows similar philosophy, but not to such an extreme degree !
  
  I wouldn't like to repair/recap/resolder such a piece ... and I insist that even a Yamaha C-I is easier to service ...
- #4
  
  Dalplex
  
  01/08/11
  18H30
  
  Pretender? exactly.
  
  one thing i do not follow is the wire from/to potential meter of volume control. not shield, which is brown in picture.
- #5
  
  Dalplex
  
  28/12/11
  01H19
  
  spent some time today to figure out the random pop noise and over current protection of M-05.
  
  it is lately found out that one of the ground wire inside C-05 became dry joint.
- #6
  
  Dalplex
  
  28/12/11
  01H22
  
  can anyone suggest why the designer or hand worker use bare wire to joint the in/out/center of volume potential meter?
  
  it is thick brown/black pair inside the picture.
  
  C-02 and C-120A use shield wire for the same applications.
- #7
  
  Dalplex
  
  01/01/12
  14H32
  
  okay.
  
  dressed the bare wires with braided shield and ground to earth. huge improvement resisting the noise without biasing the original tone character.
  
  it was slightly under control getting into oscillation once the under cover was removed as these wires are very sensitive.
please help me find RCA jack used on C-05 (3)last updated by Dalplex - 02/08/2011, 22H55 Open this topic in TVK Talk
- #1
  
  Dalplex
  
  01/08/11
  18H33
  
  hi,
  
  i have a Luxman C-05 with a RCA jack need to be replaced.
  
  please refer to the picture in the link, which shows the output jack do not look as others. it is quad RCA jack with diagonal screw mount.
  
  i have tried similar jack from C-120A but they are physically incompatible.
  
  I found that there are generally 2 types of quad RCA jack that were used by Luxman.
  
  Please refer to: http://img638.imageshack.us/img638/7144/quadrcajack.jpg.
  
  On the left of picture, which is from C-120A. and one the right, it was the one(only half left) used on C-05.
  
  As you can see, C-120A’s jack has little bold metal base and come with 2 (each on top and bottom) pins bent back. And bigger size of oval surround base.
  
  Another example besides c-120a is L-1(http://i67.servimg.com/u/f67/14/57/84/17/imgp2310.jpg), L5(http://i178.photobucket.com/albums/w247 ... anl509.jpg).
  
  c-05, for comparison, straight down to the bottom without bent back pins and the surround oval base is much smaller.
  
  It was used on, for example, cl-40(http://step2web.ch/shop/images/luxman/L ... 0_back.jpg), L-530(http://www.audioinnovationen.de/assets/ ... r-24cm.jpg) , L-570(http://i823.photobucket.com/albums/zz15 ... -links.jpg).
  
  the L-410 uses the same jack as well but in silver colour.
  
  please advise where to buy one of it?
  
  i am thinking to buy a amplifier, working or not, as long as it has quad RCA?jack like C-05 is using.
  
  thanks
- #2
  
  Axel
  
  01/08/11
  18H43
  
  To find them terminals new will probably be impossible.
  
  I'm sure you could find a cheap-ish Lux amp with such plugs in Japan : an L-1 or L-3 will go for nothing there.
  Here is one : http://page13.auctions.yahoo.co.jp/jp/auction/r80134570... 10$ !
  
  These won't be gold-plated, of course...
- #3
  
  Dalplex
  
  02/08/11
  22H55
  
  thanks for the suggestion.
  
  however, L-1 fall into the category that using another type of jack. http://i67.servimg.com/u/f67/14/57/84/17/imgp2310.jpg
  
  i found that number less than 400 in L series would use the same as L-1 or C-120A.
  
  this is one L-430 on audiogon for 275 with tuner but the shipping could up to 100.
  
  http://pic3.audiogon.com/i/c/f/1311552845.jpg
  
  these two jack look very close but physics not compatible.
any better schematic of M-05 (1)last updated by Dalplex - 26/04/2011, 04H26 Open this topic in TVK Talk
- #1
  
  Dalplex
  
  26/04/11
  04H26
  
  hi,
  
  the service manual and schematic, which can be down loaded from various sources is not that clear.
  
  anyone has a better schematic?
  
  thanks

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