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-   -   Marant 7c preamp diyzone project (http://www.diyaudio.com/forums/tubes-valves/93159-marant-7c-preamp-diyzone-project.html)

Josep 30th December 2006 08:00 PM

Marant 7c preamp diyzone project
 
2 Attachment(s)
Somebody knows anything about this project from diyzone?

http://forum.diyzone.net.cn/viewtopi...b90a7d878d2d84

Josep 30th December 2006 08:02 PM

2 Attachment(s)
the schematics :

Netlist 30th December 2006 08:12 PM

It has been a hot item in many topics over here:
http://www.google.com/search?hl=nl&r...yaudio.com&lr=

/Hugo

Josep 31st December 2006 08:24 AM

2 Attachment(s)
Thanks, but I think maybe this can be a best project than others.
PCB and power supply seems very good.

Josep

Netlist 31st December 2006 08:41 AM

It is nice, but assembling a kit, sold by people whose sole purpose is to make money by ripping off others is not really encouraged over here.

/Hugo

analog_sa 31st December 2006 09:00 AM

Quote:

Originally posted by Josep
Thanks, but I think maybe this can be a best project than others.
PCB and power supply seems very good.

Josep



Maybe not. The 7C had a pretty good phono stage and a very mediocre line stage. Its claim to fame is based mostly on collectors value.

Four (4) caps along the signal?!! ECC83 follower!!! I bet it only sounds good with TFKs :)

Josep 31st December 2006 09:06 AM

Quote:

Originally posted by Hugo
It is nice, but assembling a kit, sold by people whose sole purpose is to make money by ripping off others is not really encouraged over here.

/Hugo


You are right!

Alain Dupont 31st December 2006 02:29 PM

Josep,

You better go with an Aikido from John Broskie at:
http://www.tubecad.com/2006/05/blog0064.htm

Choose your input tubes depending of the gain needed
and you'll get better results than the Marantz 7 preamp!!! ;)

Even without a PCB the results will be higher quality and bandwidth!!
And there are on Tubecad many PS's to choose from.

As Analog_sa said: " the Marantz 7 is good for his collector value,
not for his preamp stage... "
And most, avoid diyzone :smash:

Regards.
Alain.

phn 31st December 2006 02:38 PM

1 1/2 12AX7 and massive feedback!

The tube amps the likes of Marantz did in the 1950-60s are the equals to the ss amps the Japanese electonics giants did in the 1970s. Not bad, but you can do a helluva lot better.

Go Akido.

grhughes 1st January 2007 04:46 PM

Of all the preamps to copy, not that one!
 
...It's phono preamp isn't bad but the post volume control circuits are veiled. The Audio Research SP-3-6 is basically am offshoot of this. They both evolved from an original Westrex circuit which in some ways was superior to either the Marantz or the Audio Research.


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