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uk.rec.audio (General Audio and Hi-Fi) (uk.rec.audio) Discussion and exchange of hi-fi audio equipment.

Nikko amplifier



 
 
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  #1 (permalink)  
Old February 17th 05, 07:58 PM posted to uk.rec.audio
Daan
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Posts: 3
Default Nikko amplifier

Hello,

About eight years ago, my father gave me a Nikko amplifier, and now I have
become curious what kind of thing it actually is. I have made some pictures
of it so I hope one can see all relevant things:

http://members.lycos.nl/daang/nikko

So, does anyone know something about it? How old could it be, how much power
would it have? Is it any good or would any 10,- amplifier on eBay be
better?

And do any devices exist for the "Switched" and "Unswitched" sockets? They
look like English or American ones, but being an European amplifier it puts
220V on them.

Thanks in advance,

Daan.
  #2 (permalink)  
Old February 17th 05, 09:01 PM posted to uk.rec.audio
Don Pearce
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Posts: 1,412
Default Nikko amplifier

On Thu, 17 Feb 2005 20:58:38 +0100, Daan wrote:

Hello,

About eight years ago, my father gave me a Nikko amplifier, and now I have
become curious what kind of thing it actually is. I have made some pictures
of it so I hope one can see all relevant things:

http://members.lycos.nl/daang/nikko

So, does anyone know something about it? How old could it be, how much power
would it have? Is it any good or would any 10,- amplifier on eBay be
better?

And do any devices exist for the "Switched" and "Unswitched" sockets? They
look like English or American ones, but being an European amplifier it puts
220V on them.

Thanks in advance,

Daan.


This goes back to the worst old days of solid state. It has driver
transformers, and a performance that only its mother could love.

Keep this one for the memories, and buy yourself something - anything
- on ebay. It will be better.

d

Pearce Consulting
http://www.pearce.uk.com
  #3 (permalink)  
Old February 17th 05, 09:26 PM posted to uk.rec.audio
Fleetie
external usenet poster
 
Posts: 449
Default Nikko amplifier

This goes back to the worst old days of solid state. It has driver
transformers, and a performance that only its mother could love.


Yeah, I was thinking the same thing: "Two xformers that look like output
xformers. I see no valves. What's going on? Surely not...?!".


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.fleetie.demon.co.uk


  #4 (permalink)  
Old February 17th 05, 09:31 PM posted to uk.rec.audio
Eiron
external usenet poster
 
Posts: 782
Default Nikko amplifier

Don Pearce wrote:

This goes back to the worst old days of solid state. It has driver
transformers, and a performance that only its mother could love.

Keep this one for the memories, and buy yourself something - anything
- on ebay. It will be better.


I bet the transistors are germanium too.

--
Eiron.
  #5 (permalink)  
Old February 17th 05, 10:48 PM posted to uk.rec.audio
Malcolm Stewart
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Posts: 56
Default Nikko amplifier

"Eiron" wrote in message
...

I bet the transistors are germanium too.
--
Eiron.


.... and what's wrong with germanium?
My first vac job was testing out the very first Mullard (there's a name to
remember) n-p-n germanium transistors for the Ferranti Argus computer core
store memory drivers.

--
M Stewart
Milton Keynes, UK
http://www.megalith.freeserve.co.uk/oddimage.htm



  #6 (permalink)  
Old February 18th 05, 07:48 AM posted to uk.rec.audio
Don Pearce
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Posts: 1,412
Default Nikko amplifier

On Thu, 17 Feb 2005 22:48:50 -0000, "Malcolm Stewart"
wrote:

"Eiron" wrote in message
...

I bet the transistors are germanium too.
--
Eiron.


... and what's wrong with germanium?


Thermal runaway is just the first thing that comes to mind.

d

Pearce Consulting
http://www.pearce.uk.com
  #7 (permalink)  
Old February 18th 05, 09:02 AM posted to uk.rec.audio
db
external usenet poster
 
Posts: 46
Default Nikko amplifier

Talking of germanium transistors - how about the Braun T1000 portable -
hundreds of the things. Mine still works - touch wood!
JB


  #8 (permalink)  
Old February 18th 05, 09:24 AM posted to uk.rec.audio
Jim Lesurf
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Posts: 3,051
Default Nikko amplifier

In article , Don Pearce
wrote:
On Thu, 17 Feb 2005 22:48:50 -0000, "Malcolm Stewart"
wrote:


"Eiron" wrote in message
...

I bet the transistors are germanium too. -- Eiron.


... and what's wrong with germanium?


Thermal runaway is just the first thing that comes to mind.


Fear not. Most of the 'bad' Ge transistors are probably long-dead. The ones
that have survived this long are the cast-iron ones. ;-)

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html
  #9 (permalink)  
Old February 18th 05, 09:41 AM posted to uk.rec.audio
Don Pearce
external usenet poster
 
Posts: 1,412
Default Nikko amplifier

On Fri, 18 Feb 2005 09:02:45 +0000 (UTC), "db"
wrote:

Talking of germanium transistors - how about the Braun T1000 portable -
hundreds of the things. Mine still works - touch wood!
JB


I don't think anyone was suggesting it was impossible.

d

Pearce Consulting
http://www.pearce.uk.com
  #10 (permalink)  
Old February 18th 05, 02:49 PM posted to uk.rec.audio
Don Pearce
external usenet poster
 
Posts: 1,412
Default Nikko amplifier

On Fri, 18 Feb 2005 09:24:07 +0000 (GMT), Jim Lesurf
wrote:

In article , Don Pearce
wrote:
On Thu, 17 Feb 2005 22:48:50 -0000, "Malcolm Stewart"
wrote:


"Eiron" wrote in message
...

I bet the transistors are germanium too. -- Eiron.

... and what's wrong with germanium?


Thermal runaway is just the first thing that comes to mind.


Fear not. Most of the 'bad' Ge transistors are probably long-dead. The ones
that have survived this long are the cast-iron ones. ;-)

Slainte,

Jim


So how far along the bottom of the bathtub curve do you reckon it
might be? Cruising gently, or about to strike the plug hole?

d

Pearce Consulting
http://www.pearce.uk.com
 




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