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December 07, 2021, 12:30:00 PM

Author Topic: New meters  (Read 1502 times)

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Offline Thermioniclife

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New meters
« on: September 08, 2021, 03:13:17 PM »
So I had problems with both the meters, I ended up removing them and replacing them. I partially recessed them and they work great. Dead nuts on with actual measurement.
My Spidey senses tell me someone else may do something similar.
I mounted them facing the 2a3 because I am working on a vertical mounting system keeping the footprint as narrow as possible.
The amps sound very good.
Lee R.

Offline debk

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Re: New meters
« Reply #1 on: September 08, 2021, 11:26:54 PM »
I am planning on doing the same thing, except I will mount them to face forward.  I will post a picture when I make the modification

Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline debk

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Re: New meters
« Reply #2 on: September 09, 2021, 02:59:34 PM »
I added the digital panel meters to my MonAmour amps.  Simple to do and I like the look.
Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline debk

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Re: New meters
« Reply #3 on: September 09, 2021, 03:00:19 PM »
and the top side
Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline Thermioniclife

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Re: New meters
« Reply #4 on: September 09, 2021, 03:19:57 PM »
Looking good Deb, I have one recessed and one full height, still haven't decided yet, I'm fickle.
My Spidey senses were correct, It's funny how great minds think alike.  ;D
Lee R.

Offline johnsonad

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Re: New meters
« Reply #5 on: September 09, 2021, 04:25:25 PM »
Great idea! I like both versions!
Aaron Johnson

Offline Thermioniclife

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Re: New meters
« Reply #6 on: September 09, 2021, 04:54:07 PM »
Thank you Aaron.
Lee R.

Offline Ivan303

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Re: New meters
« Reply #7 on: September 10, 2021, 04:01:47 AM »
Dose Bottlehead have an 'official' fix, or is this it?

If so, does it come with instructions?  Where to get the meters?

Both of my meters bit the dust as well, and within just a few hours of operation.  No rush, just curious.

TIA

Online Paul Birkeland

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Re: New meters
« Reply #8 on: September 10, 2021, 04:43:00 AM »
What is really odd about this is that I put a few dozen of these into service in various projects before we ever released them in a kit.  One out of about 25 ended up being sticky but started working properly with a whack.  Some of these meters have been operating daily for five plus years now without a hiccup.

It would help if we could get some of these back to see what's going on with them.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Thermioniclife

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Re: New meters
« Reply #9 on: September 10, 2021, 09:20:25 AM »
Hi PB, I will send my meters back to your attention.
Lee R.

Offline Ivan303

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Re: New meters
« Reply #10 on: September 13, 2021, 05:00:45 AM »
Hi PB

Should be able to send them back.

Do I need to keep those four little resistors in the circuit?  Send them back with the meter and short around them?

Replace them with new little resistors?

Wait for replacement meters?

How should this work?

Be happy to do it any way that makes sense for you.


Online Paul Birkeland

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Re: New meters
« Reply #11 on: September 13, 2021, 06:48:07 AM »
The latest meters we have been getting are already compensated, so the resistors aren't necessary any longer.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Ivan303

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Re: New meters
« Reply #12 on: September 13, 2021, 11:07:41 AM »
Hi Paul,

As those four little parallel resistors are in series with the 2A3 cathode, exactly how does that work, exactly?

Cathode current goes through the new meter?

Meter across some other part of the circuit?

Are you sending out new meters with instructions?




Online Paul Birkeland

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Re: New meters
« Reply #13 on: September 13, 2021, 12:56:50 PM »
The paralleled resistors set the meter to read the scale that's displayed on it.  With no resistors it will go to 100mA with 1mA of current.  The new meters have this built into the inside of the meter.

DC current goes through the cathode resistor(s) and meter,  AC current not so much.

We are not sending out the meters with instructions.  You just replace old with new.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline Ivan303

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Re: New meters
« Reply #14 on: September 14, 2021, 04:49:33 AM »
Sounds like I should wait until I receive replacement meters before I return the old ones???