ECC 83 + ELL 80 maybe?

CJ900RR · 22nd February 2009, 05:40 PM

I was able to save the parts from an old Philips B8D42AS radio, schematics. It contained some tubes as follows:

2 pcs ELL80
2 pcs EM87
2 pcs ECC808
1 pcs ECC83
1 pcs ECC85
1 pcs EF184
1 pcs ECH81
1 pcs EAF801

After some searching, the ELL 80 is a rare tube, I decided to go with this schematic:

From this website.

Power trafo primary side:

Power trafo secondary side:

Output trafo (pusch-pull):

First, the power-trafo seams to be broken. I hooked it up for 220V operation as stated in the schematic but can only measure 3.8V AC between pin 6 and 8 or 9, and between pin 7 and 8 or 9, everything else give 0V.

So... what do you think. Should I give it a go or do you recommend something else? It will be my first tube-amp if I give it a go...

planet10 · 22nd February 2009, 07:20 PM

Even a single stage of ECC83 is probably too much gain (note that the ECC808 is, i believe, a premium ECC83). Of the tubes you have i'd be tempted to use the ECC85.

Testing well, the ECC83, and ECC808s can likely sell for enuff to help buy parts for the build.

dave

azazello · 22nd February 2009, 07:48 PM

ECC85 /for preamp for L & R ch./, and ECC83 /fase inv. for L & R ch./.

Yvesm · 22nd February 2009, 08:49 PM

Hey !

ECC808 + ELL80, go for that:
http://www.dissident-audio.com/PP_ECL86/Page.html

or one of the numerous variations know here as "Baby Huey" f.e. :
EL84 Amp - Baby Huey

Have fun !

Yves.

manonon · 22nd February 2009, 11:19 PM

Why not to restoring the radio?
Is a beautiful receiver, and you keep having the amplifier stage.

Sweden · 23rd February 2009, 02:21 PM

Hello
fun with recycling, is intresant to folow this

22nd February 2009, 05:40 PM	#1
CJ900RR diyAudio Member Join Date: Jan 2006	ECC 83 + ELL 80 maybe? I was able to save the parts from an old Philips B8D42AS radio, schematics. It contained some tubes as follows: 2 pcs ELL80 2 pcs EM87 2 pcs ECC808 1 pcs ECC83 1 pcs ECC85 1 pcs EF184 1 pcs ECH81 1 pcs EAF801 After some searching, the ELL 80 is a rare tube, I decided to go with this schematic: From this website. Power trafo primary side: Power trafo secondary side: Output trafo (pusch-pull): First, the power-trafo seams to be broken. I hooked it up for 220V operation as stated in the schematic but can only measure 3.8V AC between pin 6 and 8 or 9, and between pin 7 and 8 or 9, everything else give 0V. So... what do you think. Should I give it a go or do you recommend something else? It will be my first tube-amp if I give it a go...

22nd February 2009, 07:20 PM	#2
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	Even a single stage of ECC83 is probably too much gain (note that the ECC808 is, i believe, a premium ECC83). Of the tubes you have i'd be tempted to use the ECC85. Testing well, the ECC83, and ECC808s can likely sell for enuff to help buy parts for the build. dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

22nd February 2009, 11:19 PM	#5
manonon diyAudio Member Join Date: Jan 2009	restoring? Why not to restoring the radio? Is a beautiful receiver, and you keep having the amplifier stage.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

22nd February 2009, 07:48 PM	#3
azazello diyAudio Member Join Date: Aug 2008 Location: Bulgaria	ECC85 /for preamp for L & R ch./, and ECC83 /fase inv. for L & R ch./.

22nd February 2009, 08:49 PM	#4
Yvesm diyAudio Member Join Date: Jul 2004 Location: Ardeche	Hey ! ECC808 + ELL80, go for that: http://www.dissident-audio.com/PP_ECL86/Page.html or one of the numerous variations know here as "Baby Huey" f.e. : EL84 Amp - Baby Huey Have fun ! Yves.

23rd February 2009, 02:21 PM	#6
Sweden diyAudio Member Join Date: Feb 2009	Hello fun with recycling, is intresant to folow this