Out of interest.
4 Transistors c3198.
Does what I want anyway.
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Carm99
Senior Member
Last Activity: 06-01-2024, 06:13 AM
Joined: 06-17-2014
Location: London
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This is what’s inside.
Out of interest.
4 Transistors c3198.
Does what I want anyway.
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That’ looks like a line input pot. I can’t say for sure but it might be.
I’m using this to the line input and it’s OK.
Even the loud 12” ones don’t peak to 0db. They’re in the - db range.😊
They’ve just set the phono input too high but it’s perfect for LPs as they are lower anyway.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3272634}[/ATTACH]...Leave a comment:
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I’ve got a Rod Elliott P06 to build aswell. Plenty threads on that around.
I was talking to him about this unit. He says that you need a pot for audio. It makes no sense to not have one as you have no control over it.
I was trying to make this unit work alone without anything other than maybe putting a small pot in there maybe.
I could upgrade some of the caps in there to better the sound a bit but it works good for LPs.
CheersLeave a comment:
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Hi
Its a 1210mk2. Cartridge is a Stanton 500.
The LPs are a nice volume. It actually sounds pretty good. I was playing all sorts. Al Jolson. Brenda Lee. George Jones. Del Reeves. Eddie Cochran.
I don’t think it’s made for 12” singles. If I somehow reduced the volume. The LPs would be too low then.
The 12s are more than 10db louder. Surprisingly ,one of the LPs peaked around -3.5db too ,but didnt go near 0db.
Yea I don’t understand it either ,I’ve been playing vinyl for over 40 years. I’ve never known a phono input to be loud like that. From Amplifiers...Leave a comment:
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I was testing it again with a turntable and Albums are -6 to -8db.
12inch singles are very loud ,I don't know what level they are as they're in the Red most of the time.Leave a comment:
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Hi again.
I measured the voltages on the chips.
Im getting +4.9v+ on pin 8 but 0v on pin 4 on both of them.Leave a comment:
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Took some photos with a light under the board to see the tracks. [ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3269270}[/ATTACH]
[ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3269269}[/ATTACH]Took some photos with a light under the board to see the tracks. [ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3269270}[/ATTACH]
[ATTACH=JSON]{"d...Leave a comment:
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No Its all fixed levels.
There should have been an adjustment in some way.
Any idea what voltages I should be seeing on those chips.
Ill hook up a CD later on to it.
Its either the input or output. Knowing those voltages might help.
Its a shame I cant get the schematic as that would help and we could see the whole thing and how it works.
Like I said I can always use something else but it would be good to try to make it work properly.
CheersLeave a comment:
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Hi
Im on a mac.
Theres no adjustments to make. I was looking for some.
I thought it being USB ,there might be software that accesses a chip in there to adjust it but no.
I need to try a loud CD through it. I'll then know if its the output side.
The owners of Citronic dont have a schematic for it , so how did they make it.
I cant see it being like that from factory. Maybe a component is gone somewhere.
I can always find another way but why not try to get it right if I can.
Its handy as you just plug the turntable straight in.
Here is a better...Leave a comment:
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It’s a usb audio interface but you can connect a turntable to it or another audio source.
I’m talking about the input via USB.
It’s too loud for some reason.
[ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3262741}[/ATTACH]...Leave a comment:
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Citronic AC-1USB Output Too Loud
Hi
I have a Citronic AC-1USB.
When I run a turntable into it and then try to record it. The volume is too loud and distorting. In the red. Mainly 12” Singles. I haven’t tried a CD into it yet. I’m wondering if there is any way to bring the volume down inside the unit itself. Change a part or two. Put a small pot somewhere as there are no adjustments at all in there. I’m looking for the schematic but not found one yet.
Heres the circuit board inside.
Cheers
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Thanks for the Help Man.😎Leave a comment:
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I got the Plug for the adaptor at last. A Nice Silver one.
Soldered it all up with Heatshtink included to make it ice and neat.
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I plugged it in and hooked it up like a mixer and it works.
Im getting the audio through it.
I'll try a mic later on and mess with the effects a bit.
Ive had it a while and didn't know the adaptor was the wrong one.
Sad really.
Great to see it working like it should...Leave a comment:
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Ok man. Thats what I was thinking.
The Unit is all back together now.
I'm still waiting on the plug.Leave a comment:
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Im waiting on a plug for the adaptor ,as the one on the end ,don't fit ,as the pin on the device is too big.
One thing I noticed when buying one ,is there are a lot more DC adaptors than AC ones around.
Did you work out why the front panel works with the DC Adaptor.?
CheersLeave a comment:
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The Adaptor should be here next week.
I'll be surprised if it don't work.
Cheers for the help so far.Leave a comment:
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I bought one. 10VAC 1500mA.Leave a comment:
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I just checked again. The adaptor is DC.! 💀Leave a comment:
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Yea thats what Im using.
I tested it with a multimeter. Its going + then 0. AC
I'll try with the analogue one when I find it.
Im looking for another one ,if I have it.Leave a comment:
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I was thinking about the supply as I checked everything and its ok. The unit powers up as the front screen is on and you can adjust everything.
I was wondering where the negative voltage was going to appear from.
Let me look in the manual.Leave a comment:
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