Philips EL3536

fullrangeSR · 1st June 2009, 09:39 PM

I have two sets of PT/OPT/tubes (EF86, 12AX7, ECL82, EZ80) salvaged from a pair of mono Philips EL3536 RtRs. Any suggestions as to an appropriate SE circuit(s) which would utilize the parts available? I don't have any info on the transformers' parameters...

aardvarkash10 · 1st June 2009, 09:49 PM

simplify and repackage the circuit. Replace all caps etc, don't bother with the EF86 and the 12ax7 as they are only there to provide gain you no longer need. Keep the existing ECL82. Or, if you want a bit of a fun challenge, RH84 the circuit. Values will have to be modded a bit, and revintage will tell you you are mad, but you have all the bits...

aardvarkash10 · 1st June 2009, 10:09 PM

but it shows a slightly different tube compliment to what you have.... http://mb.abovenet.de/tonbandwelt/ph...536/el3536.htm

fullrangeSR · 2nd June 2009, 07:33 PM

Thank you aardvarkash! This, once again, goes to show that this website is a real treasure. For days I had been unsuccessfully searching the net for the original diagram...

I wanted to take a look at the schematic in the first place in order to find an info on the output transformers - 3.5 Ohm speakers were connected and that's what confused me... Since I'm new to tubes and without any diagnostic equipment whatsoever (save for a cheapo digital multimeter), I couldn't measure the primary load...

Further, it turns out the mono RtRs were not EL3536 after all (I was careless enough to throw the decks away without writing down model numbers). They have EL3536 output transformers - WT 511 22, but the power transformers are WT 510 92 and WT 511 13.1 - different numbers but with identical pin layout and both with EZ80...

Another model, though - EL 16B, perfectly matches the parts layout...

And as to the RH EL84 - I've built one and I'm extremely satisfied with it. Hammonds, no PIOs and no tantalums and it still sounds quite nice...

Dennis Perusse · 13th December 2011, 02:17 PM

Can anyone post a diagram of an EL16B as I have similar power and output transformers. My transformers are wt 510 92.1 and my out put has the number wt 511 21.

sasha70 · 6th January 2012, 05:58 PM

Good evening.
This is schematic of output section of EL3536 with WT511 22 transformer.
Could you please comment if anything missing?

Regards.

Kay Pirinha · 6th January 2012, 10:29 PM

Hi,

I think there's missing a capacitor from screen grid (pin 9) to ground.

Best regards!

costis_n · 6th January 2012, 11:34 PM

...and keep the mustard Philips/Mullard capacitors if you can, guitar amp makers go crazy for them.

mississippi · 7th January 2012, 08:58 AM

In my "archive" I had a schema.
Here it is.

sasha70 · 7th January 2012, 10:38 PM

Thank you for comments and schematic.
I have found this missing capacitor on schematic diagram.
I have found interesting link on how to measure output transformer impedance:
Output Transformer Impedance
Is one EL84 will provide enough gain?
Should I add EL82 (first stage) to this amplifier?
Best regards.

1st June 2009, 09:49 PM	#2
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	why reinvent the wheel? simplify and repackage the circuit. Replace all caps etc, don't bother with the EF86 and the 12ax7 as they are only there to provide gain you no longer need. Keep the existing ECL82. Or, if you want a bit of a fun challenge, RH84 the circuit. Values will have to be modded a bit, and revintage will tell you you are mad, but you have all the bits... __________________ "Folks, you can't prove truthiness with information. You prove truthiness with more truthiness. In a process known as truthinessiness." - Stephen Colbert, The Colbert Report

1st June 2009, 10:09 PM	#3
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	original diagram here but it shows a slightly different tube compliment to what you have.... http://mb.abovenet.de/tonbandwelt/ph...536/el3536.htm __________________ "Folks, you can't prove truthiness with information. You prove truthiness with more truthiness. In a process known as truthinessiness." - Stephen Colbert, The Colbert Report

2nd June 2009, 07:33 PM	#4
fullrangeSR diyAudio Member Join Date: Dec 2008	Re: original diagram here Thank you aardvarkash! This, once again, goes to show that this website is a real treasure. For days I had been unsuccessfully searching the net for the original diagram... I wanted to take a look at the schematic in the first place in order to find an info on the output transformers - 3.5 Ohm speakers were connected and that's what confused me... Since I'm new to tubes and without any diagnostic equipment whatsoever (save for a cheapo digital multimeter), I couldn't measure the primary load... Further, it turns out the mono RtRs were not EL3536 after all (I was careless enough to throw the decks away without writing down model numbers). They have EL3536 output transformers - WT 511 22, but the power transformers are WT 510 92 and WT 511 13.1 - different numbers but with identical pin layout and both with EZ80... Another model, though - EL 16B, perfectly matches the parts layout... And as to the RH EL84 - I've built one and I'm extremely satisfied with it. Hammonds, no PIOs and no tantalums and it still sounds quite nice...

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

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FS Alnico Philips AD3800M AD3800AM and Philips transformers	guglielmope	Swap Meet	8	10th January 2011 11:28 AM
philips cd 880 philips cd880 service manual	0519	Digital Source	4	28th August 2008 11:43 AM
Philips CDM-3	Angelm	Digital Source	1	31st March 2003 04:52 PM


	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

13th December 2011, 02:17 PM	#5
Dennis Perusse diyAudio Member Join Date: Nov 2010	Can anyone post a diagram of an EL16B as I have similar power and output transformers. My transformers are wt 510 92.1 and my out put has the number wt 511 21.

6th January 2012, 10:29 PM	#7
Kay Pirinha diyAudio Member Join Date: Oct 2011 Location: Tauberbischofsheim, Germany	Hi, I think there's missing a capacitor from screen grid (pin 9) to ground. Best regards!

6th January 2012, 11:34 PM	#8
costis_n diyAudio Member Join Date: Aug 2008	...and keep the mustard Philips/Mullard capacitors if you can, guitar amp makers go crazy for them.

7th January 2012, 10:38 PM	#10
sasha70 diyAudio Member Join Date: Jul 2011 Location: Newtownards	Thank you for comments and schematic. I have found this missing capacitor on schematic diagram. I have found interesting link on how to measure output transformer impedance: Output Transformer Impedance Is one EL84 will provide enough gain? Should I add EL82 (first stage) to this amplifier? Best regards.

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