My own version of the EAR 834P Clone

[Algar_emi]

Modified the circuit to add one more stage of RC filtering as per MartinR schematic. Here the schematic with voltages. It measures about the same.

By the way, my circuit gain at 50dB may be a little lower because I'm using at the moment for the second valve (V102) a 12AX7WA NOS valve. I'll try later with a brand new 12AX7.

 

[spamer45]

Conclusions?

So were there any conclusions? Are you happy with the performance? Did anyone else build this and have opinions? As others have commented, I am also looking for a good newbie circuit.

Thanks,
Steve

 

[kip.duff]

Conclusions also

Beautiful documentation. Want to DIY it myself, but wanted to know if/how unit worked out. Newbie also. Let us know-thanks, Kip........

 

[thewwwall]

Another 834p phono build

hey - too many new phono threads to start a new one, but to resurrect one i based my most recent whim upon, here's a pic of my newest build - and i'm no scot, 'cept in spirit and maybe my mom's mom's mom's side, but who ain't ;^) - used the schematic except slight diff. on PSU, using a choke off first filter cap which is 20UF motor run and proceeded from there. Lot's of gain with my shure Vx15 blah blah - no hum at all, kept signal's as short as possible and mainly used P2P with perfboards for the PSU 'modules', all in same 12X8X3 hammond steel box...

 

[kevinkr]

It is ok to start a new thread when the existing thread is as old as this one, provided of course that you are documenting the project build from the get go..

 

[doctor90]

Hi There, i dont know if anybody is still reading this thread, but i have just built this and it sounds wonderful, however it has an annoying hum, not sure if i have just try'ed putting to much into a smallish box, or is its filtering on power supply, or ground loop, any advice would be really appreciated, ill upload photos later. regards, kevin.

 

[Ollvid]

My own schematic that I used to build the preamp section. It matches my Parts List.

Hey
I want to build this Ear 834 clon is this part list up todate ??

Best to you Ollvid

 

[Steve Morley]

Have a read of this

Check out Thorsten's take on the 834P:

The very much non-definitive EAR 834P Modification Guide - Thorsten - Vinyl Asylum

 

[Francois G]

Hey
I want to build this Ear 834 clon is this part list up todate ??

When was the parts list published?

 

[Ollvid]

at the 27 of April 2017

 

[Francois G]

Thanks, Ollvid, but could you mention the thread post #. I see no parts list in this thread after the initial 2008 list, which obviously had not been updated.

 

[Ollvid]

hej Francois G

sorry it is me thats wrong
there is a man on this sit spaceistheplace he is all so on Lencheaven he has made thread on lencoheaven whit part list fore the EAR 834p I have bin looking at this sit and on lencohevan
my English is not so god sorry for that I am from Denmark hope you understan me

 

[Ollvid]

hej Francois G

hear is the the link https://www.lencoheaven.net/forum/index.php?topic=26658.0
and that man is also on this sit so I was looking at both sits at the same time a get confuse
sorry my friend
i have send the man a message but no contact

 

[Francois G]

Hi Ollvid, Thanks very much. This site lencoheaven.net is interesting- thanks for this link. And I understand you well, your English is much better than my Danish!

 

[craigtone]

I did the PCB layout for the design in lencoheaven. If you need the BOM for it, let me know.

 

[Ollvid]

Hi Carigtone
Yes that i would like hit me place ��������
I have ordet a Ear 834 kit from eBay so i Think that
Will have to put in some better componet �� so i woluld like youre design ��

 

[Ollvid]

Yes i would like that design you have

 

[MartinR]

Hello Ollvid,

another choice is to build it point to point. This would give you more freedom. For example to try other capacitors.

Best wishes
Martin

 

[Ollvid]

hello Martin,

ok that I ditten no this Riaa is my first build I have orders a print on Ebay and wolud like to put some better caps and stuff on my build but what to by ???

 

[Ollvid]

Hello Ollvid,

another choice is to build it point to point. This would give you more freedom. For example to try other capacitors.

Best wishes
Martin

i am new to this and the Riia I my first build