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Bottlehead Kits => Eros Phono => Topic started by: Fidot on December 25, 2024, 08:47:07 AM

Title: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: Fidot on December 25, 2024, 08:47:07 AM
Howdy folks!

In preparation for an Eros 2.0 build, I am building it "virtually" - following steps from the manual with a sharpie on a printout of the layout. Makes me understand the setup better, see which parts go where, and the like.

In this process, I discovered  that the manual adds a 90R9 resistor (per channel) between A6/10 and B6/15 respectively. If i understand that right, that'd be between OC/OD of the Eros C4S board and plates of EF86s. I can not find them on the schematic... If I was to insert them, they'd be where I scribbled red on the schematic bit.

Can someone knowledgeable please comment - which one is off - my brain; schematic; or manual? :) Thank you!

Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: Paul Birkeland on December 25, 2024, 11:20:46 AM
Plate stoppers for an EF86 are somewhat unnecessary but made the build a lot easier to do, so that's what we went with.
Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: Fidot on December 25, 2024, 11:36:05 AM
Roger that. So; not on the schematic, but present in the build. Do I understand this correctly?

As always, thanks Mr. Paul - and Merry Christmas!
Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: Fidot on December 25, 2024, 12:52:44 PM
... and of course *after* I post this, I find this thread with a ton more detail :(

https://forum.bottlehead.com/index.php?topic=12039.0

Sorry for the double post. For some reason; that thread didn't come up when I searched for `90R9` and similar...
Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: bucketofguts on January 19, 2025, 07:38:56 AM
 Instructions say 90R9f resistor is an 1/8 watt. I is really a 1/4 watt? I needed a few and orderes 1/8 watt 9092F. Can they be used?. Thank you. The resistors cut short from the tube pins. Thank you and good day.
Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: Paul Birkeland on January 19, 2025, 07:39:52 AM
They can be 1/250W and that would still be sufficient power.
Title: Re: Eros 2.0: mysterios 90R9 resistors on A6/B6 plate terminals not in schematic
Post by: bucketofguts on January 19, 2025, 08:18:03 AM
Much obliged!