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Old 9th February 2014, 07:07 PM   #5911
McGyver is offline McGyver  Poland
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Quote:
Originally Posted by bekim View Post
Aikido preamp.
Driven by 6N1P and 6N6P, output caps K40Y9, after few months I will change caps with Auricap's which I have them already.
Is there a Denon DCD-685 CD player? If so, it is worth to rebuilt.
You can replace its poor opamped analogue stage by tube based one, and the player will sound awesome. I did it many times, and recommend it for you. Here are some pictures:

Click the image to open in full size.

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Old 9th February 2014, 08:28 PM   #5912
bekim is offline bekim  Albania
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Quote:
Originally Posted by McGyver View Post
Is there a Denon DCD-685 CD player? If so, it is worth to rebuilt.
You can replace its poor opamped analogue stage by tube based one, and the player will sound awesome. I did it many times, and recommend it for you. /tuB8yGZxoD50GcKV_VHY0fr6Jxg_BV7BSbE-UrMMZzE=w800-h461[/IMG]
Yeah DCD 685... Works good, just sometimes CD drawer get stuck, like is trying to open and after many times open/close will open or a "gentle" slap in chassis, the drawer opens :-)

Nice work in your cd player, which tubes you are using? I can see in pcb SRPP.. (will you share the design) Can 6N1P or 6N6P do the job?


My Aikido, I like sound of it. Really its worth any cent I invest on it.
Makes music so rich and lifelike, especially classic rock when I listen.

Thanks
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Old 9th February 2014, 08:39 PM   #5913
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McGyver: nice upgrade mod to the player. I have a Teac PD-C400 5 CD player which I reckon sounds good as is. But modding the output stage to a tube stage would make it just a little nicer.
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Old 9th February 2014, 08:48 PM   #5914
McGyver is offline McGyver  Poland
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Quote:
Originally Posted by bekim View Post
Yeah DCD 685... Works good, just sometimes CD drawer get stuck, like is trying to open and after many times open/close will open or a "gentle" slap in chassis, the drawer opens :-)

Nice work in your cd player, which tubes you are using?
I'm using 6DJ8.
Quote:
I can see in pcb SRPP.. (will you share the design)
It's only print on PCB. My circuit is common cathode tied to the cathode follower. I'll share the circuit when I'll find the drawing. You can use (with some mods) the line stage from Klimo Merlin preamplifier also.
Quote:
Can 6N1P or 6N6P do the job?
Yes, they can, but I dislike both. I used to replace 6N1P by 6CG7 and to replace 6N6P by 5670 or E182CC (Warning! Different pinout!). Replacing 6N6P by E288CC in my ukrainian monoblocks gave great sonic benefits.
Quote:


My Aikido, I like sound of it. Really its worth any cent I invest on it.
Makes music so rich and lifelike, especially classic rock when I listen.
I believe you. I'll post the pictures of my handmade tube preamplifier soon.
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Old 10th February 2014, 12:34 AM   #5915
McGyver is offline McGyver  Poland
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Promised photos of my tube preamplifier:

Click the image to open in full size.


Tube stage:

Click the image to open in full size.


Signal capacitor:

Click the image to open in full size.

(will be replaced by Audyn True Copper when it arrives)


BJT regulated PSU:

Click the image to open in full size.


Remote control module, it is programmable, works with any RC5 or RC6 RCU:

Click the image to open in full size.


Rear panel:

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...and finished unit:

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Old 10th February 2014, 06:51 AM   #5916
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hello ,

me old proto to new box , only use old components for build .

power finality = 2 x 5 w to 1 Khz at 8 ohms !

the clone perfect is build to good component

the price to build ...very little ; 50 dollars approximatly
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File Type: jpg S.O.D.E.L Proto PL504 - 12AT7 - 2 x 5 W.JPG (246.7 KB, 526 views)
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Old 10th February 2014, 09:21 AM   #5917
bekim is offline bekim  Albania
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Quote:
Originally Posted by McGyver View Post
Promised photos of my tube preamplifier:
Great!

I check your site, very nice gear you build.

regards,
bekim
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Old 10th February 2014, 01:18 PM   #5918
McGyver is offline McGyver  Poland
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Quote:
Originally Posted by bekim View Post
Great!

I check your site, very nice gear you build.

regards,
bekim
Thanks. Tube RIAA preamp inspired by Audio Research SP6 is the next piece on my workbench.
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Old 17th February 2014, 04:35 PM   #5919
romicap is offline romicap  Romania
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Default Ampli SE config.2 x 8W

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My SE amplif (paralel)2 x6P6S and ECC83 driver.
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Old 17th February 2014, 08:38 PM   #5920
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Romicap: looks good.
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