Studer 900 power supply

Solution: also connect the H position together with the M position both 33kOhm and 14 kOhm resistors are in parallel then - this is safe because the low L position reseistor would be even smaller at 3. However this supply board needs two primary coils not a center tapped coil.

Last edited by yoshisoakland; 6th October at AM. Reason: added information. Hi, there I am thinking of buying this board, but I cannot get any answer from the vendor on how to connect the jumpers for H, M or L in order to get the voltage range I want.

Can you show me using a picture and drawing the connections? Thank you very much for your help in advance. Can't help with the vendor. But, here is a link to the manual which might contain a schematic for the Studer which the seller says his design is based on: STUDER SM Service Manual free download, schematics, eeprom, repair info for electronics Good luck!

Unfortunately, I am not sure how close these vendors follow the original circuit. I do not have the full version of Adobe to convert the PDF to a word document which can be translated with Google Translate.

But I do find a block diagram that show how a series of resistor is use to provide different voltage output. Not sure whether this will be applicable to the board we are talking about. As the tuning range does not cover the full voltage range, you either put solder across the pads marked L, M, or H to be able to get the right voltage. As stated above, in my case the desired 12V were just outside the M range, which only went down to 12,5V.

So I also connected H in addition to M and voila the potentiometer range was enough for 12 V see image. The nominal voltage ranges are: L Low voltage : 5v - 9v. Vendu dans cette position initale. Much appreciated! Just curious, how do you like this power supply I am thinking of getting it for my headphone amp? I have just put one together, but unfortunately it doesn't work properlyn no regulation.

I have checked and double checked my assembly and can't see anything I've done wrong.

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I noticed there are 2 empty pads on each half of the pcb, have you got these on your pcb? I am using split secondary 18 0 18 Transformer, want to obtain 15 0 15 supply. Output sitting at 26 0 26 at the moment with no sign of adjusting. Any assistance would be very much appreciated.

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Hi again, problem solved. I missed the soldered links to bring the H L M resistors into play. All fine and dandy now. I recently bought one of these "Studer " PSUs, and surprisingly, it made a very big difference in the sound quality in my system.Order by:. Available to:. Studer D 2 Mo Recorder. Studer Mixer 3. Studer mixer in excellent condition. It is in very good shape except some channel panel Side panel stands are removed temporarily. I will ship them together. The desk is working good generally.

But since this is a used item. The buyer may need to do typical maintenance. Built in patch bay. Plug and Play XLR patch panel on the rear panel.

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I am sorry I can't accept Paypal for these big item. I would say I am an honesty seller, and also experienced seller for big consoles. Please check my ebay feedback. If the buyer can't trust me, please pass this listing. Shipping: Please contact me for detailed info. Studer Mixer 1. Studer Mixer with Meter Bridge.

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Studer Mixer. Studer mixer in good working condition. All channels are tested to be working good. Please see photos below for cosmetic condition. Recently removed Manual: Even though the desk is working good.

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The buyer may expect normal maintenance like cleaning pots and and fader. Bank Wire Transfer only. Returns are not accepted.

This is an used item. So sold as is. Shipping and handling: Please contact me for more details or send me your address to estimate the cost.Free shipping.

If you not have paypal account,please check www. After the payment cleared,we will send out the item to you within 24 hours. Please pay the item after you buy it in four days,if over that days,base on ebay rules,we can open unpaid case for you automatic,thank you for your understanding.

XTS 900-12

Shipping Costs are Calculated based on your location, weight of the package and the shipping service you selected.

There is no combine shipping discount, the final cost of shipping is based on the total weight of all the items. These charges are the Buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. We have items in stock at USA warehouse and China warehouse,please attention each listing item location. China warehose can ship worldwide and by China Post mail:.

United States,United Kingdom about weeks. Canada,Australia,Europe about weeks. Other country about weeks. If you need to express transport, please contact us. We provide DHL transport,but you need extra pay ship fee. Please contact us to request a return authorization. Your name, auction number, and reason for return should be included in the email.

All items returned must contain all original packaging materials. Please repack the item carefully. Items returned will be tested and a new replacement will be shipped to the buyer immediately when found defective. In the event that a suitable replacement is not available then a refund will be issued. Shipping, handling and insurance fees are non refundable.

If the item is found non-defective, the item will be sent back to the buyer at buyer's expense. Items returned without RMA number will be refused and returned to the sender. We do not accept any returns without an authorization number on the box or label it is being returned in. We are professional factory to make kinds of motorcycle CNC accessory,such as kinds of modified brake clutch levers,rearsets,foot pegs,steering dampers,kickstand sidestand,handlebar clamp,swingarm spool bolts and so on.

We can offer wholesale and retail,customer order is also can do. We can guantee the items quality and give reasonable price to you. Skip to main content. Add to Watch list. People who viewed this item also viewed.It was also a big surprise for me, while testing this "studer " power supply. This seems to me a great design, although I'm completely unable to understand this design, how it works. Onboard power supplies have progressively been replaced by external ones.

A lot of caps replaced, including some ceramic arround DAC chip. Op amp replaced by Burson V5. And like fibonacci said, the studer gave a so much better sound on that specific place. Sound clarity, dynamic, bass level, there is not a small difference but a big one. I was very surprised and switched several times, and even made the JFET R6 mod on Reflektor in order to be really sure.

But in any configuration this studer power supply gave best sound. I have no opinion on removing the bead and placing there a 3rd Reflektor-D will bring something or not.

Last edited by greinedo; 8th January at PM. Thanks for confirming my observations, greinedo, about the huge jump in sound quality this amazing "Studer " PSU makes.

I took a much closer look through the original Studer service manual and I think I found the original schematics that this particular PSU is based on.

Reading further on the Web, I believe phantom stabilizers are traditionally used to power electret condenser microphones, and since mics are very sensitive to electrical noisethe PSUs powering them have to be very low noise PSUs.

I am making a wild guess here, that part of the reason why it gives a huge jump in SQ is that the PSU has no output capacitors, or at least no electrolytic caps. I'm not sure if this is true but that's what I see in the original Studer schematic, see around page of the PDF file of the original manual. Another thing I am guessing that could be responsible for the high SQ is a very low output impedance.

Perhaps someone else who is technically qualified to analyze the schematic could help to explain how this PSU is so good. SMPS input. I am also interested in this PSU. Do I understand you correctly that you have connected it to a smps DC input instead of a AC transformer without loss of sound quality?

I recently purchased one o these supplies and have been impressed with the results. Unfortunately there is very little information available on the power requirements of the board. My board came with H and M jumpered. With the transformer connected to the board, I got With only M connected, With only H connected, 23VDC no load and Power requirements seem similar to those for Sigma Currently using as above to power Auralic Aries. Also noticed this board for sale at Audiophonics.

Their explanation regarding the jumpers is not correct. I would only connect jumper for the voltage range required and fine tune with trimpot. It powers the Kali OK but seems unable to supply the 0. I thought it would have no trouble supplying up to 1A at 5V. Has anyone encountered similar issues with this board?

There's a noticeable improvement in the sound with it powering Kali so I'm very much hoping to get it to power the DAC too. Any ideas please? Last edited by jonners; 3rd December at PM. I believe there could be a kind of inconsistency.If you not have paypal account,please check www. After the payment cleared,we will send out the item to you within 24 hours.

Please pay the item after you buy it in four days,if over that days,base on ebay rules,we can open unpaid case for you automatic,thank you for your understanding. Shipping Costs are Calculated based on your location, weight of the package and the shipping service you selected.

There is no combine shipping discount, the final cost of shipping is based on the total weight of all the items. These charges are the Buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

We have items in stock at USA warehouse and China warehouse,please attention each listing item location. China warehose can ship worldwide and by China Post mail:. United States,United Kingdom about weeks.

Canada,Australia,Europe about weeks. Other country about weeks.

studer 900 power supply

If you need to express transport, please contact us. We provide DHL transport,but you need extra pay ship fee. Please contact us to request a return authorization.

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Your name, auction number, and reason for return should be included in the email. All items returned must contain all original packaging materials. Please repack the item carefully. Items returned will be tested and a new replacement will be shipped to the buyer immediately when found defective. In the event that a suitable replacement is not available then a refund will be issued.

Shipping, handling and insurance fees are non refundable. If the item is found non-defective, the item will be sent back to the buyer at buyer's expense.

Items returned without RMA number will be refused and returned to the sender. We do not accept any returns without an authorization number on the box or label it is being returned in. We are professional factory to make kinds of motorcycle CNC accessory,such as kinds of modified brake clutch levers,rearsets,foot pegs,steering dampers,kickstand sidestand,handlebar clamp,swingarm spool bolts and so on. We can offer wholesale and retail,customer order is also can do. We can guantee the items quality and give reasonable price to you.

Description: The product is all aluminum alloy machine, the output port is 5. Product warranty for 2 years, including V power cord The line is based on the Swiss STUDER power line, low-noise fever linear power supply, with excellent wiring and good linear components, the output precision is very high, low ripple, the actual listening feeling is better than most of the Class A power supply.

It is necessary to install the mill. Please indicate the required voltage and current before taking the picture. The output voltage can be selected between 5V and 24V. It can provide high-precision, low-noise constant power supply for turntables, precision instruments, decoding DACs, amps, etc.

There are 4 kinds of prices, please buy according to your needs. How to measure the power you need? You can choose 25W transformer. We can only receive paypal payment 2. After the payment cleared,we will send out the item to you within 24 hours 4. China warehose can ship worldwide and by China Post mail: United States,United Kingdom about weeks Canada,Australia,Europe about weeks Other country about weeks If you need to express transport, please contact us. Terms of Sale 1.It was also a big surprise for me, while testing this "studer " power supply.

This seems to me a great design, although I'm completely unable to understand this design, how it works. Onboard power supplies have progressively been replaced by external ones.

A lot of caps replaced, including some ceramic arround DAC chip. Op amp replaced by Burson V5. And like fibonacci said, the studer gave a so much better sound on that specific place. Sound clarity, dynamic, bass level, there is not a small difference but a big one. I was very surprised and switched several times, and even made the JFET R6 mod on Reflektor in order to be really sure. But in any configuration this studer power supply gave best sound.

studer 900 power supply

I have no opinion on removing the bead and placing there a 3rd Reflektor-D will bring something or not. Last edited by greinedo; 8th January at PM. Thanks for confirming my observations, greinedo, about the huge jump in sound quality this amazing "Studer " PSU makes. I took a much closer look through the original Studer service manual and I think I found the original schematics that this particular PSU is based on. Reading further on the Web, I believe phantom stabilizers are traditionally used to power electret condenser microphones, and since mics are very sensitive to electrical noisethe PSUs powering them have to be very low noise PSUs.

I am making a wild guess here, that part of the reason why it gives a huge jump in SQ is that the PSU has no output capacitors, or at least no electrolytic caps. I'm not sure if this is true but that's what I see in the original Studer schematic, see around page of the PDF file of the original manual. Another thing I am guessing that could be responsible for the high SQ is a very low output impedance. Perhaps someone else who is technically qualified to analyze the schematic could help to explain how this PSU is so good.

SMPS input. I am also interested in this PSU. Do I understand you correctly that you have connected it to a smps DC input instead of a AC transformer without loss of sound quality?

studer 900 power supply

I recently purchased one o these supplies and have been impressed with the results. Unfortunately there is very little information available on the power requirements of the board. My board came with H and M jumpered.Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. The normally delivery time as follows:. If you don't have Paypal account, please sign up and learn more about paypal at www.

E-checks will be held until cleared. Package include:. New Arrived. Description: The product is all aluminum alloy machine, the output port is 5. Product warranty for 2 years, including V power cord The line is based on the Swiss STUDER power line, low-noise fever linear power supply, with excellent wiring and good linear components, the output precision is very high, low ripple, the actual listening feeling is better than most of the Class A power supply.

It is necessary to install the mill. Please indicate the required voltage and current before taking the picture. The output voltage can be selected between 5V and 24V.

It can provide high-precision, low-noise constant power supply for turntables, precision instruments, decoding DACs, amps, etc. There are 4 kinds of prices, please buy according to your needs. How to measure the power you need? You can choose 25W transformer. We will send the item to you within 24 hours except public holiday when we have received your payment. We apologize that we cannot accept other payment methods. Please contact us to request a return authorization. Your name, auction number, and reason for return should be included in the email.

All items returned must contain all original packaging materials.

XTS 900-12

Please repack the item carefully. Items returned will be tested and a new replacement will be shipped to the buyer immediately when found defective. In the event that a suitable replacement is not available then a refund will be issued. Shipping, handling and insurance fees are non refundable.

If the item is found non-defective, the item will be sent back to the buyer at buyer's expense. Items returned without RMA number will be refused and returned to the sender.

We do not accept any returns without an authorization number on the box or label it is being returned in. We do not work holidays in Hong Kong. If you send email to us,In our working hours will be resumed within 48 hours. Terms of Sale 1. Copyright All Rights Reserved Description: The product is all aluminum alloy machine, the output port is 5.