Behringer xenyx x1204usb mixer

[Thermaltake]

Then you need to list the serial numbers on each pot and also the number of pins... I am not telepathic... 😵💫

I finally manage to disassemble the mixer.


All pots have 1,8cm shaft measuring only plastic part. From metal part of pot to top of shaft is 2,3cm

Here are mark of all pots inside mixer:

For headphones - B503DC (6 pin)
For FX With central pin - B503x (3 pin)
For Balance With central pin - AC103w (6 pin)
For low, mid and highs With central pin - B503w (6 pin)


If someone can help me to pick some high quality pots to replace them with this behriger garbage ones. Thanks

[check12]

Just saw this ... haven't got time right now but tomo evening maybe ... I'll post the values etc. unless someone else does it first ...

[Thermaltake]

Just saw this ... haven't got time right now but tomo evening maybe ... I'll post the values etc. unless someone else does it first ...

Thanks!

If it's possible for shop to be in EU, to avoid extra VAT to pay.

[check12]

I finally manage to disassemble the mixer.


All pots have 1,8cm shaft measuring only plastic part. From metal part of pot to top of shaft is 2,3cm

Here are mark of all pots inside mixer:

For headphones - B503DC (6 pin)
For FX With central pin - B503x (3 pin)
For Balance With central pin - AC103w (6 pin)
For low, mid and highs With central pin - B503w (6 pin)


If someone can help me to pick some high quality pots to replace them with this behriger garbage ones. Thanks

For headphones= Search Google for "B503 linear 50k ohm vertical no detent dual 6 pin pot“

For FX= Search for "B503 linear 50k ohm vertical center detent 3 pin pot"

For low, mid & high EQ= Search for "B503 linear 50k ohm vertical center detent dual 6 pin pot"

For balance (pan?) = Search for "AC taper 10k ohm vertical center detent dual 6 pin blend pot"

AC taper blend pots can be difficult to find but don't often need replaced.

There's no way I have time to search for where you can get the cheapest parts, you will have to do that yourself... I have provided what to search for.

Pots made by Bourns, Alps, Alpha (Taiwan)... are the kind of product you are looking for.

If you are unsure about what you find then post the links where you want to buy and I or others will confirm if suitable.

[Thermaltake]

For headphones= Search Google for "B503 linear 50k ohm vertical no detent dual 6 pin pot“

For FX= Search for "B503 linear 50k ohm vertical center detent 3 pin pot"

For low, mid & high EQ= Search for "B503 linear 50k ohm vertical center detent dual 6 pin pot"

For balance (pan?) = Search for "AC taper 10k ohm vertical center detent dual 6 pin blend pot"

AC taper blend pots can be difficult to find but don't often need replaced.

There's no way I have time to search for where you can get the cheapest parts, you will have to do that yourself... I have provided what to search for.

Pots made by Bourns, Alps, Alpha (Taiwan)... are the kind of product you are looking for.

If you are unsure about what you find then post the links where you want to buy and I or others will confirm if suitable.

Ok, I'll try to find them in few days and post links for you to confirm if I pick right ones, thanks!

Can you tell me just am I searching for shaft 18mm or 23mm ? How is it measure from metal part or just plastic thing ?

[Thermaltake]

Forgot one pot

It's also FX central pin - 3B503x (6 pin)


Another question

If I want to change caps on motherboard of mixer, do I need to put low esr caps or normal caps ?

[check12]

Forgot one pot

It's also FX central pin - 3B503x (6 pin)


Another question

If I want to change caps on motherboard of mixer, do I need to put low esr caps or normal caps ?

Use the same replacement pot as low, mid, high EQ.

Easiest way to replace caps in behringer power supply is to use 105c (temperature) low esr for all replacements.

IMO your doing a lot of unnecessary work... What is actually wrong with the desk?

[check12]

For confirmation can you post a photo of the 3B503x pot... I want to make sure it's a vertical pot?

[Thermaltake]

Use the same replacement pot as low, mid, high EQ.

Easiest way to replace caps in behringer power supply is to use 105c (temperature) low esr for all replacements.

IMO your doing a lot of unnecessary work... What is actually wrong with the desk?

Caps on PSU were already replaced a year ago. There were 3 bad caps, and I replace them all with stronger ones few Volts more than it was by factory. I was talking about motherboard where pots are, when I am going to replace pots I would like to replace that caps also and for them I was asking if they are low esr or normal caps.


I noticed there are two kind of 3B503x (both for FX/AUX and both with central pin.)

1. https://i.imgur.com/Tuqxtd2.jpg

2. https://i.imgur.com/1lrWuTm.jpg

[check12]

Caps on the main pcb should not need replaced.

OK photos confirm all pots are mounted vertically so what I advised in reply #27 is correct.

I'm taking it when you say "central pin" you mean you feel a little click when the pot shaft is in the middle of the range of travel? e.g. Half way between fully CCW & fully CW?

[Thermaltake]

Caps on the main pcb should not need replaced.

OK photos confirm all pots are mounted vertically so what I advised in reply #27 is correct.

I'm taking it when you say "central pin" you mean you feel a little click when the pot shaft is in the middle of the range of travel? e.g. Half way between fully CCW & fully CW?

Ok.

Now I see, stupid me. The difference is one is 6 pin, one is 3 pin, that's why they're different.

Yes central pin when you move pot in the center there is click or stop however you want to call it.

[check12]

Ok.

Now I see, stupid me. The difference is one is 6 pin, one is 3 pin, that's why they're different.

Yes central pin when you move pot in the center there is click or stop however you want to call it.

Yes the only difference is the amount of pins, these pot serial numbers are just behringer part numbers ... e.g. for the 3B503x the "3" and the "x" are likely just added as part identifiers for behringer, the important details are:

the B = linear taper

the 503 code = (which means 50 followed by three zero's) = 50,000 ohms or 50k ohm

... then you also do a visual & manual check to find:

the pot mounting orientation = vertical

the number of pins = either 3 or 6

the length of shaft & size of body

& finally ... whether the pot has a tactile center detent or not

....

[Thermaltake]

Yes the only difference is the amount of pins, these pot serial numbers are just behringer part numbers ... e.g. for the 3B503x the "3" and the "x" are likely just added as part identifiers for behringer, the important details are:

the B = linear taper

the 503 code = (which means 50 followed by three zero's) = 50,000 ohms or 50k ohm

... then you also do a visual & manual check to find:

the pot mounting orientation = vertical

the number of pins = either 3 or 6

the length of shaft & size of body

& finally ... whether the pot has a tactile center detent or not

....

Thanks so much for all the info. and patience for explaining

[Thermaltake]

Sent mail few days ago to TME with all the values of pots I need, and they told me today " Hello! We can't to offer.... 🙁 " So I guess I am continuing to send mails and finding out who can provide me those pots.

[Thermaltake]

Can someone help me with getting this pot's, everyone that I contact can't help me...

[check12]

B503 = B50K (6pin with midpoint) use for headphones, low, mid, high EQ = https://www.aliexpress.com/item/1005007954345312.html

B503 = B50K (3pin with midpoint) for FX = https://www.aliexpress.com/item/1005005806597186.html

AC103 = AC10K (6pin with midpoint) for "balance" = https://www.aliexpress.com/item/1005006950880734.html

I know the original headphone pot did not have a midpoint detent but having one will make no difference.

Don't forget to choose the correct "AC10K With Midpoint" option in the listing for the AC103 pots ...... & in the 3pin B50K listing choose "50 ohm" option, they have forgotten to type the K (it shows the pot with the K in the photo & they don't make that style of pot in only 50 ohms).

The B50K are all Taiwan Alpha pots which are good quality, the AC taper pots are difficult to find so you'll just have to go with what's available.

I've no more time for this so if your not happy with these links then you will have to search further for yourself ... all the info for searching has been given...

[Thermaltake]

Thanks.

On B50K - this one on link have plastic threads on the bottom of the pot. Mine don't, and I think that will make problems when I wan't to close that metal cover of mixer.

[check12]

Thanks.

On B50K - this one on link have plastic threads on the bottom of the pot. Mine don't, and I think that will make problems when I wan't to close that metal cover of mixer.

OK didn't consider that and actually I think I have advised wrong base size for the pot frame snap in lugs.

Post the measurements (length, width) of the square pot bases & I'll have a look again when I've got time... 👍

[check12]

Ok corrected list ... (taking it that the 6pin pots are 12mm between the 2X "snap in" securing tabs on the pot bases) that's the most common size:


B503 = B50K (6pin with midpoint) use for headphones & low, mid, high EQ = https://www.aliexpress.com/item/1005007343612656.html

B503 = B50K (3pin with midpoint) for FX = https://www.aliexpress.com/item/1005006554255808.html

AC103 = AC10K (6pin with midpoint) for "balance" = https://www.aliexpress.com/item/1005008338040792.html


Always click on postage options and choose "Aliexpress standard delivery" and you should receive them within 14 days ... other options can take months...

These are all from the same trader you might get a cheaper deal by contacting them and asking for consolidated postage ... (Always use Aliexpress standard delivery though)...

[Thermaltake]

Thank you.

There also 2x 3B503x with 6 pin and midpoint for FX on the Stereo Aux Returns.