STP-VM9-D3

PROFESSIONAL STUDIO MICROPHONE

This is our new microphone for high quality audio. It contains 34mm large diaphragm pressure gradient transducer.
We designed its circuit for using it without phantom power. The kit regulates voltage from 5v to 48v like the interfaces do. We have encapsulated the circuit of USB phantom power into it. This 48v phantom power is then given to the capsule. And then output is taken from C1 linked with hot wire of capsule and given to the additional built in preamp based on TL071 low noise OP-Amp.

We used a thick mesh as you can see in the pics. 
Now here is a question.! How i design the body in this mic shape? Well i'll make another post on how i did the whole thing.

Microphone works with an unbalanced power cord cable that is XLR to 3.5mm stereo jack that goes to the microphone port of computer soundcard. 

On the top of this microphone there is another mesh which is bended as you can see in the picture. You can see some screws that are holding the mesh in the microphone. But the mesh on the top of this microphone is joined with super glue.

There is another screw in the mid of the body which looks useless but infact that is preventing the huge noise. It is joined with the GND of the circuit.


I painted it black with black spray color bottle. Because that is the easiest way to get the high quality color with shining.

You can see that the shock mount is attached with it and fixed tight with the grip ring.
Overall the method i used to make this is really difficult. Once it is done you cannot open it. You cannot repair it. This is just disposable. But believe me the parts are assembled in such a way that damage cannot be done.

Here are some specification of this microphone:

Unit : Super-Cardioid Pressure Gradient Transducer
Directivity : Omni-directional
Frequency Response : 20Hz-16kHz
Sensitivity : -38dB (0dB=1V/Pa at 1kHz)
Output Impedance : 150 Ohm 30% Polarity (at 1kHz)
Load Impedance : >1000 Ohm
Equivalent Noise Level : 16dBA
Max. Sound Pressure Level : 132dB (at 1kHz < 1% T.H.D)
S/N Ratio : 78dB
Current Consumption : 3mA

Project of : Sam Technology Professionals

Project Code :  STP-VM9-D3

Warranty   : N/A

ADDITIONAL HARDWARE PPB:

PPB stands for Phantom Power Box. It is used to boost the signals. You plug this microphone in it and takes output to the line in of your PC or you can drive another amplifier. You can use it with interfaces to attain the high quality sound.

PPB  can be powered by a single 9v battery or you can power it with the USB cable. PPB is our new technology to use microphone in a different and clean way.

(I'll post about it in the next week).

"Need to add some samples, I need silence while recording. So it will be easy to judge the quality. I shall post the demo audio soon."

 

STP-CM99-AP2

 USB CONDENSER MICROPHONE

We tried to Make AP1 cheap so every one could buy and enjoy the high quality of sound.
We used TSB165A Capsule and used PCM 2902 IC for USB Interface. 
Like AP1 it also have some buttons option like Volume Up, Volume Down, Mic Mute, Headphone Mute etc.
But we didn't connect these buttons with our kit because of low space in the metal body of microphone. Yes we took the body of an ideal Vintage Condenser Handled Microphone as you can see in the pics below:

Here you can see it was a Vintage Microphone which was useless for us.
So instead of sending it to recycle we used it to give our buyers the pleasures of high quality audio.

This microphone doesn't have a Line In option but it has Headphone Option.
Yes you can connect your headphone into this microphone.

We tried to make  USB Microphone before but that had DC offset problem. In this microphone that problem has been resolved.

It has no latency rate problem because it has its own jack for headphone. You can control through your computer audio mixer that either you want audio from your headphone or not.
You can play MIDI Through it because it has a MIDI Sw Synth Option into its software like our computer sound card have.
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PROJECT OF : SAM TECHNOLOGY PROFESSIONALS
PROJECT CODE : STP-CM99-AP2
Warranty             : N/A because of its packing. It is packed with the Super Glue and it is really hard to open it. It wouldn't open but it will break. 
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DETAILS:
This packing was suggested by our Chairman "ASIM ALI"  for hackers who want to copy and build our circuit.
This page named as project codes shows the projects we sell. Its a little business we are growing. When we want to provide you circuit we post their links here but there are many things and their modification what we don't post because some persons had hacked our circuits before. But still we are with you. If you contact us by phone call and ask us about circuits we can give you after verifying you (This offer is not available for some countries).

:) Regards:
Engg Sania (Moderator) 

STP-CM99-AP1

USB Condenser Microphone

AP1 was real expensive due to its design and its functions here is a picture of it:

This microphone is professional Studio Microphone with some extra function. 
It has two 3.5mm female input ports for connecting other things. These ports were named as :

• HEAD PHONES
• LINE IN

This Microphone has Four Buttons on it which are also 3.5mm in size. These are push buttons and they were named as:

• Volume Up
• Volume Down
• Headphone Mute
• Line In Mute

This microphone has a cable to connect it with USB that cable is:
5 pin XLR to USB Connector Cable

This microphone was one of the best microphone we have ever made.

Price of this microphone was 120$ USD.
We made only one and sold it.

This Microphone was based on a capsule that is TSB2555A Professional Large Diaphragm.

STP-CM99-104

Condenser Microphone Based on "TSB-160a Capsule".
Ad and pics of this microphone were posted here on this link:
http://olx.com.pk/item/vocal-condenser-microphone-IDSau0N.html

DETAILS:

Condenser microphone suitable for vocals, guitar and broadcasts etc. Connect with your pc or laptop. No external soundcard or hardware is required. Plug and play system.
It has a built in low noise balanced preamp and capsule TSB160A high quality condenser mic element.
Best for recording covers and songs.

Specifications:

Impedance              : 3.3k ohm
J-FET Used            : MPF102
Operating voltage    : USB source 5v
Output To               : Stereo 3.5mm jack
Frequency response: 8000Hz to 19000Hz


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It is clear that in cheap international price you get the high quality vocal microphone that do not need any other hardware like interfaces etc. USB powers up the capsule and gives you output to the line in. If your laptop doesn't have a line in option you can use some USB Interface to pass it through. Or you can also connect this to the microphone port of your soundcard. (In this case you need to reduce your mic port's sensitivity in other words you need to uncheck the option of Mic Boost)
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Project of : Sam Technology Professionals
Project code: STP-CM99-105
Warranty : N/A

STP-DM-A12

Professional Dynamic Microphone

This is a Professional Dynamic Microphone. There is no comparison of this microphone. You can compare it with any professional and expensive microphone and it will be the only winner. We have built its capsule that provides quick response diaphragm joint to the coil having an impedance about 150-160 Ohm. It has a good magnet built into it. 
This microphone has a very light weight. It looks very stylish and beautiful. Its body is made of pure plastic that is strong enough can't be broken easily.

Go and Build your own studio, manage live performances and big shows with the help of this cheap offer (Check out this amazing offer below)

Bundles

10 pcs $250.00 USD 7 pcs $200.00 USD 5pcs $150.00 USD

Its a best choice for:

• Vocals
• Live performances
• Recording Through Guitar Amplifiers / Sound Modules
• Recording from Tapes Cassette Players

•  TECHNICAL DETAILS: 

  It was tested in our lab for one month and finally we got the results. Its frequency response,sensitivity, frequency response curve looks amazing.
  Frequency Response :  16Hz - 20kHz
  Impedance                  :   150-160 Ohm
  Switch On/Off              : Resistance Break Switch
  
  
  

  How this microphone looks like....???

  Here are some pictures captured from iPhone to show you how it looks like.
  
  
  
  We are offering this Microphone in stock. You can buy at least one bundle. One bundle contains ten STP-DM-A12 Microphones with cables and converter jacks. Look them here below.
  
  
  
  
  

These cables and converter jacks (1/4inch to 1/8inch stereo) are made of high quality material.

BUNDLE Contains:

• Ten STP-DM-A12 Dynamic Microphones
• Ten 1/4inch to 1/8inch Low Noise Converter Jack
• Ten 1/4inch to XLR 3 pin Low Noise Microphone Cables
• One XLR to USB Interface for Dynamic Microphones. (Check its specification here)

Price of One Bundle:

Price of one bundle is 250$ USD + World wide shipping cost 0.50$ USD.

Bundles

10 pcs $250.00 USD 7 pcs $200.00 USD 5pcs $150.00 USD

 

We ship worldwide and takes very low charges 5$ USD. You can buy our projects from eBay, OLX.com.pk, Bolee.com.pk etc.
Free Delivery To Pakistan. 
We also deliver all over Pakistan and takes no charges. For purchasing in Pakistan we give a special discount offer that is 15000Rs per bundle. 
(To Purchase within Pakistan Contact Us by Phone Call).

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Project Details:

Project Code : STP-DM-A12

Warranty: Optional Parts Warranty

Price : 255$ USD (Inc Shipping) Charges

Sam Technology Professionals - We are promoting the World.
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STP-CM99-103

CONDENSER MICROPHONE

Its a perfect condenser microphone. Typical frequency response and samples are similar to STP-CM99-101 but its working is little bit different.
It requires no battery no USB plug to power it. It can be powered by Audio interface.
You can plug directly to your computer or laptop.

PICTURES:

Omnidirectional Condenser Microphone. High Quality Recording Microphone. Typical Frequency Response Curve. 2.2kΩ Impedance  

Suitable For: 

• Broadcast
• Vocals
• Musical Instruments
• Voice Recognitions
• Wildlife Recordings

 Parts:

• Toggle On/Off Switch.
• Atmosphere Changing Switch
• USB Jack Output

Very low noise performance. 

We can say its a Large Diaphragm Capsuled Condenser Microphone.

Weight is very light and its portable. It requires no other hardware.

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Project of       : Sam Technology Professionals

Project Code : STP-CM99-102

Status             :  Available

Price               : 2500 Rs - PKR   

STP-CM99-102

USB CONDENSER MICROPHONE

It is a fantastic USB Condenser Microphone. It works awesome with every Windows and MAC. You just plug its cable to your PC or Laptop and your PC or Laptop will detect it. It has its own driver so you just sit relax and it do all itself.

Frequency Response is similar to the STP-CM99-101

 

Omnidirectional Condenser Microphone. High Quality Recording Microphone. Typical Frequency Response Curve. 2.2kΩ Impedance  

Suitable For:

• Broadcast
• Vocals
• Musical Instruments
• Voice Recognitions
• Wildlife Recordings

 Parts:

• Output Stereo Female Jack 1/8 Inch.

Very low noise performance.
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Pictures:

Its uniqueness is its USB interface that is built in it. The USB interface is based on an IC PCM29XZ that supports High Definition Audio.

About its Capsule we can say its a Large Diaphragm Capsuled Condenser Microphone.

Weight is very light and its portable. It requires no other hardware.

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Project of       : Sam Technology Professionals

Project Code : STP-CM99-102

Status             :  Available
Price              :  3000 Rs - PKR