Arsip Bulanan: September 2023

CAR AMPLIFIER 80 WATTS MAGNAT

Ditulis pada oleh
Balas

MAGNAT CLASSIC 4000XL is an audio car amplifier made by MAGNAT of 90’s. Its deliver 4 x100 Watts or working in Four Channels amplifier or Two Channels Bridge Tied Load.

INFO

X

Appearance of the unit is LOOKS LIKE THIS.

EDITED SCHEMATIC DIAGRAM CAR AMPLIFIER 80 WATTS

After some editing, this is the result of Magnat Classic 4000XL:

CAR AMPLIFIER 80 WATTS SCHEMATIC DIAGRAM

The circuit looks like a symmetrically power amplifier from input going through output.

The blocks is:

  • Differential Preamplifier,
  • Voltage Amplifier Stages,
  • Servo Driver,
  • Driver Amplifier. and lastly is
  • Final Power Amplifier

x

VCC is 24VDC simetrically.

Final Amplifier transistor is using a pair 2SD718/ 2SB688 that its can deliver 80 Watts Output (DATASHEETS).

SEE ALSO

Another schematic Diagram of Audio Amplifier inside this blog READ THIS.

Collection of audio schematic in Yohan’s blogspot LOOK HERE.

Various Schematic Diagram of Built Up Power and Mixer at YOHAN INDRAWIJAYA COM.

OCL 100 WATTS LANEY

Ditulis pada oleh
Balas

OCL 100 Watts LANEY here is a LANEY 100SC made of 90s.

This guitar audio amplifier comes with a 100 Watt audio output with 2 channels. The first channel is for High GAIN Channel, and another one is for CLEAN Channel.

High Gain channel is usually for guitar amps that tend to loud music like ROCK and Metal and other hard genres. CLEAN channel can be used to amplify the sound of guitar genre such as Blues, Country, Ballads, Jazz and other melodics style.

Appearance of the unit you should LOOK HERE.

INFO OF LANEY 100SC

This is an information about LANEY 100SC from many sources:

World Series 100SC with Two Loadspeakers.

Using Final transistor BD909. Its TO-220 package and about 90 Watts of power dissipation (DATASHEETS)

The Chorus effect is using OPAMP NE571 as COMPANDORS.

You want to know the price? try visit THIS LINK

SCHEMATIC DIAGRAM POWER SECTION OF OCL 100 WATTS LANEY

This is the result of image edited of schematic diagram of LANEY 100SC:

OCL 100 WATTS LANEY schematic diagram

From the schematic above, it consists of some block:

  • Differential Preamplifier
  • Voltage Amplifier
  • Over Current Protection
  • Driver Amplifier, and lastly is
  • Final Quasi Power Amplifier.

TR1 and TR2 work as Differential Preamplifier. The circuit GAIN value is R6/R10 or 31x. Voltage source is 15VDC from D3 as Voltage Stabillizer.

TR3 (MPSA05) is Voltage Amplifier. C4 are capacitor boostrap for positive feedback signal.

This circuit no need servo driver. Its only using diode D5 and D6 to rectifying the audio signal to driver transistor TR6.

Tr4 and TR5 work as OCP. Its will be shortening signal to ground if there are over current flowing through power resistor R18 and R19.

OCL 100 WATTS LANEY using transistor BD909 in Quasi connection as Final Power transistors.

SEE ALSO

Another Audio Power Amplifier inside this blog LOOK HERE.

Blogspot of YOHAN AUDIO LINK HERE.

DATASHEETS

BD909 By SGS THOMSON

SA571 NE571 by PHILIPS SEMICONDUCTORS

TRACED SCHEMATIC DIAGRAM ASHLEY MS 300

Ditulis pada oleh
Balas

Thanks for vlogger and youtuber that make me translate schematic diagram ASHLEY MS 300.

ASHLEY is an audio Power Amplifier made in Indonesian and has a place in the hearts of his fans. This time I’ll to show you the tracing schematic of AHLEY Power Amplifier MS-300 series.

INFO

Manufacturer of this Amply saying in their brochure that the SCHEMATIC DIAGRAM ASHLEY MS 300 is stereo 450Wx2 or 900 Watts totals output.

I think this is fair because it’s using 3 pair of C5200/A1943 transistor that came with 150 Watts on each (DATASHEETS).

Where is to purchase the Amplfieir? How price of this Amps?

The list below are many of olshop that sale this amplifier.

SCHEMATIC DIAGRAM ASHLEY MS 300 RE-DRAWING

In this article I only translate in the Power Amplifier section to make it easier for readers to learn this Power Amplifier.

And here are results of my observations:

SCHEMATIC DIAGRAM ASHLEY MS 300

Note: This tracing schematic diagram can be wrong in drawing. Don’t hesitate to give me complain and suggestions. Thank you.

Rangkaian ini terdiri dari beberapa blok:

  • Differential Preamplifier,
  • Voltage Amplifier Stages,
  • Servo Driver,
  • Over Current Protection,
  • Driver Amplifier, and the last is
  • Final Power Amplifier.

Actually, there are other features in this SCHEMATIC DIAGRAM ASHLEY MS 300 Power Amplifier that I didn’t mention such as the Speaker Protector feature, Clip Detector, and Under Voltage detector but they I’m not inform it to you.

SEE ALSO

Another schematic diagram in this blog is in THIS LINK.

Hundreds of Edited / Cropped Audio scematic Diagram in Yohan’s Blogspot READ HERE.

Various Built-Up Audio Power and Mixer Schemativ Diagram of YOHAN INDRAWIJAYA.

YOUTUBE VIDEO:

Thanks for many youtube’s videos as writing source below:

  • Power Ashley Ms300 Wajib Oprek Agar Layak Pake by JD AUDIO
  • Review Power Ashley MS-300 by SJM AUDIO
  • BONGKAR JEROAN POWER ASHLEY MS-300 by SURADI ANA
  • Review Power Ashley MS-300 Tes Dari Hp Langsung Ke Power Tanpa Mixer by SYAIFUL JAYA MUSIK
  • CARA POWER ASHLEY MS 300 AGAR TIDAK PROTEK DI TEGANGAN DI BAWAH 200V by BANG AAN.

D CLASS PCB 355 EFFENDY D-900BE

Ditulis pada oleh
Balas

A PCB with the name EFFENDY D-900BE caught my attention because there was someone’s code name on it

I was reminded of a well-known PCB and component trader in the online world called MUARIF EFFENDY. Is it him?.

EFFENDY consistently sells electronic module and component products from his online store. Maybe the Class D PCB with his name is his creation.

The following is the appearance of this EFFENDY stamp class D amplifier PCB:

EFFENDY D-900BE

HOW TO GET THIS PCB

You can purchase this PCB in olshop below:

TO PURCHASE THE MODULE EFFENDY D-900BE

X

Z

TRACED SCHEMATIC DIAGRAM OF EFFENDY D-900BE

The following is the tracing result schematic of PCB number 355 with the name EFFENDY D-900BE:

skema tracing EFFENDY D-900BE

Note: My traced schematic could be wrong.

The schematic is consists of many section block:

  • Sine To Triangular Wave
  • Buffer Amplifier
  • Phase Shifter
  • Pulse Width Modulator Converter
  • MOSFET Final Amplifier
  • LC Filter
  • Speaker Protector

x

SEE ALSO:

Various audio schematic inside this blog at THIS LINK.

Many DIY schematic in Yohan’s blog READ HERE.

Blogspot of Yohan From Indonesia in THIS LINK.

SCHEMATIC DIAGRAM FIRST CLASS FC-A4500

Ditulis pada oleh
Balas

FIRST CLASS FC-A4500 is a Power Amplifier say 2 x 1500 Watts and it’s so famous in Indonesian.

Inside the box, the secondary voltage of Power transformer is 64VCT, and this could be 85 to 91 Volt DC symmetrically voltage.

In that number of voltages, will be possible to make audio output up to 650 Watts at 4 Ohm load.

First Class FC-A4500 use Four pieces of Elco with value 10.000uF/100V. This is important component to DC filter.

Where is to purchase the unit? The answer is it can be your own after bought from online shop list below (price between Rp 2M to Rp.3M):

Also list below are online shop with price between Rp.3M to Rp.4M:

TRACED SCHEMATIC DIAGRAM FIRST CLASS FC-A4500

To making schematic diagram that came from this Power Amplifier kit has took about 2-3 hours to observation.

Result of power amplifier tracing is shown below:

result of traced drawing of First Class FC-A4500

Note: the result may be wrong.The schematic diagram is come from visual observation of youtube video I saw.

The amplifier is designed in symmetrical circuit. It can be seen at the image schematic on above.

From the schematic below, the amplifier section is consisting of some circuit blocks:

  • The First is Differential preamplifier,
  • Voltage Amplifier Stages,
  • Servo Driver,
  • Driver Amplifier, and finally is
  • Final Power Amplifier.

FIRST CLASS FC-A4500 Power Amplifier is using 3 pairs of Final Transistor as 2SC5200 / 2SA1943 or 150 Watts in power dissipation (DATASHEETS).

Its mean that the Amplifier are possible to made out of 900 Watts of total Power Dissipation or about totals 750 Watts Effective power.

SEE ALSO

Other schematic Power Amplifier inside this blog THIS LINK.

Blogspot Yohan’s Blogspot consist of many DIY power and audio built up READ THIS.

Various Built-up Power Amplifier and Mixer at THIS LINK.

VIDEO SOURCE:

FIRST CLASS OFFICIAL YOUTUBE

SCHEMATIC DIAGRAM SUNBUCK MP326BT 2000W

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1

Its interesting to observe a Power Amplifier that below Rp.1M but it can reaching up to 2000 Watts of audio power in SUNBUCK MP326BT. Is it true?

An audio Power Amplifier name SUNBUCK with series number of MP326BT are made from China mainland and it has be sale over the world such as Indonesia, Europe, Russia and others.

In my country, the name are so famous because its a cheap enough to purchased.

FACT OR FAKE: BELOW Rp. 1M but POWER UP TO 2000W

After i saw the video, inside of the Power Amplifier are using a pair of 2S5198 in quasi mode for each channel.

It mean the Power amplifier are 100 Watt maximum output but it only say 60 to 70 Watts in 4 Ohm load.

100W are maximum Power Dissipation of its Final Power transistor and 60/70 are effective output audio power.

This is a inside of the amply and wiring of the power amplifier:

view of SUNBUCK MP326BT

TRACED SCHEMATIC DIAGRAM OF SUNBUCK MP326BT

After a few hours to observe, this is a result of the Power Amplifier section:

traced schematic SUNBUCK MP326BT

Note: Schematic diagram picture above are can be wrong in number of value or wiring.I do tracing the module are with my own perspection.

Block of schematic diagram consist of:

  • Differential preamplifier,
  • Voltage Amplifier Stages,
  • Driver Amplifier, and the last is
  • Final Power Amplifier.

Power section of SUNBUCK MP326BT are using a quasi power transistor 2Sc5198 that its 100 Watts dissipation output (DATASHEETS).

SEE ALSO

Another Audio Power Amplifier inside this blog LOOK HERE.

Blogspot of YOHAN AUDIO LINK HERE.

Supported Video youtube: WARUNG MBAK LINDA

SCHEMATIC DIAGRAM SUNBUCK AV-80

Ditulis pada oleh
Balas

Todays an audio brand name SUNBUCK are starting to fame in my country and now i try to make tracing schematic diagram SUNBUCK AV-80, a cheap audio amplifier with many featured in the unit.

SUNBUCK AV-80 present with USB and Bluetooth communication that is make you sing all day with your favourite song came from USB stick and you sing with your loving microphone.

INFO

Some reviewers in youtube or another e-commerce said that tha amplifier are 2000W. But I don’t trust they said.

Video looking inside of the Amplifier unit are just not big enough for Power Transformer. This looks like a 200 Watts transformer.

The unit are using Final Power Transistor 2SC5198 in quasi mode and the maximum output are reaching 100 Watt each channel.

It mean that the total Power Output are 200 Watts.

Some feture:

Extra SHDC slot for you to play your song from memory card.

USB port can easily you to play your various karaoke song or others multimedia files.

2 sockets Microphone inlet to make you sing along with your partner.

TRACED SCHEMATIC DIAGRAM SUNBUCK AV-80

Here are the results of traced schematic diagram SUNBUCK AV-80 :

traced SCHEMATIC DIAGRAM SUNBUCK av-80

From the circuit above are consist of circuit blocks:

  • Differential Preamplifier,
  • Voltage Amplifier Stages,
  • Driver Amplifier, and finally
  • Final Power Amplifier.

All transistors are using cheap transistor 2N5551 and 2N5401 but using Final Power transistors 2SC5198.

SIMULATING CIRCUIT

The tracing schematic i made is has ready to simulate with software, say it Proteus. This is I always do practice to test the result of my electrical schematic drawing.

The result of simulaton are just like this:

SCHEMATIC DIAGRAM SUNBUCK av-80 simulating test result

SEE ALSO

Another Audio Power Amplifier inside this blog LOOK HERE.

Blogspot of YOHAN AUDIO LINK HERE.

Supported Video youtube: WARUNG MBAK LINDA

OCL 600 WATTS 80V DRIVER 921

Ditulis pada oleh
Balas

Tulisan ini adalah tentang modifikasi sebuah power lawas untuk menjadi OCL 600 Watts 80V dengan menggunakan skema dari ampli buatan ROTEL.

Seri yang saya gunakan untuk bahan tulisan ini adalah ROTEL seri RA-921 yang terkenal pada era 90-an.

Pada saat itu Power ini hanya menggunakan tegangan kerja 28 VDC simetris dan 1 pasang transistor saya dengan dissipasi daya 100 Watts.

Lho kok bisa berubah menjadi 600 Watt? Jawabnya simpel saja. Tegangan dinaikkan, komponen ada yang berubah, ada yang ditambah, dan transistor Final saya perbanyak hingga 6 pasang 2SC5200 / 2SA1943.

Berikut adalah penampakan isi dalam Power Rotel RA921:

OCL 600 WATTS 80V DRIVER 921

x

SKEMA OCL 600 WATTS 80V

Selanjutnya saya mencoba mencari skema power amplifier dari servis manualnya. Ambil DI SINI.

Dan hasil gambar ulang menjadi seperti di bawah ini:

re drawing OCL 600 WATTS 80V DRIVER 921

Komponen yang terlibat di sini termasuk sederhana dan umumnya driver amplifier di negeri kita.

Blok rangkaian ini terdiri dari:

  • Preamp differensial,
  • Penguat tegangan,
  • Servo Driver,
  • Driver 1,
  • Driver 2

KLONING DRIVER 921

Selanjutnya saya melakukan percobaan untuk melakukan kloning pada rangkaian power amplifier ini dan menghasilkan PCB seperti gambar di bawah ini:

Dari PCB ini nampak bahwa saya menggunakan skun terminal untuk mempermudah join kabel antara kit Driver ini dengan papan Final.

PCB ini berukuran kecil sekitar 65mm x 100mm.

BACAAN LAIN

Skema Power lainnya dalam blog ini BACA SINI.

Macam macam skema Power dan Mixer built up LINK INI.

Blogspot Yohan tentang skema OMBRO atau DIY ada pada LINK INI.

SKEMA BARU 500W SUBWOOFER AMPLIFIER DMS 009

Ditulis pada oleh
8

Pada suatu hari saya melihat ada sebuah kit Power amplifier untuk Subwoofer dengan nama 500W SUBWOOFER AMPLIFIER DMS dengan kode kit 009.

Kit buatan PLATINUM ini hampir selalu ada di toko elektro di kota saya dan mungkin ada juga di kota anda.

DMS sepertinya adalah sebuah kode produksi dari sebuah bisnis yang bernama PLATINUM.

Banyak sekali macam-macam kit amplifier dengan seri macam-macam dengan kode depan DMS. Dan DMS009 ini menarik perhatian saya untuk saya teliti.

PCB DAN KIT SUBWOOFER AMPLIFIER DMS009

Foto ini adalah bahan saya untuk observasi rangkaian Power Subwoofer buatan DMS.

kit subwoofer amplifier DMS

Setelah saya teliti ternyata rangkaian ini adalah Power Mono atau tunggal meskipun inputnya adalah Stereo / Dual.

Dengan melihat jumlah transistor final adlaah 2 pasang maka dapat dipastikan bahwa rangkaian ini memiliki kemampuan daya sampai 300 Watt saja mengingat kemampuan transistor Final adalah hanya sampai 150 Watt (DATASHEETS).

SKEMA HASIL TRACING SUBWOOFER 500W

Berikut ini adalah skema hasil tracing atas kit PCB dan jalurnya yang saya peroleh dari internet:

skema tracing subwoofer amplifier DMS

Note: Pada skema ini banyak sekali komponen dengan nilai “X”, ini berarti bahwa saya tidak menyertakan nilai komponen tersebut karena bahan untuk tracing dan observasi adalah kurang jelas sehingga sulit bagi saya untuk mengetahui nilai komponen tersebut. Kritik dan saran dari anda adalah diperlukan.

Dari terjemahan ini maka kita bisa lihat bahwa SUBWOOFER AMPLIFIER DMS terdiri dari beberapa blok, antara lain:

  • Penguat sinyal,
  • Mixer amplifier,
  • Filter Subwoofer,
  • Phase Shifter / pembalik fasa,
  • Preamplifier,
  • Voltage Amplifier Stages,
  • Driver Amplifier, dan terakhir adalah
  • Final Power Amplifier.

Penguat sinyal di sini adalah memperkuat sinyal input kiri dan kanan yang rata-rata 1Vpp untuk naik menjadi beberapa vpp untuk pencampuran.

Mixer amplifier di sini adalah OPAMP U2A bertugas untuk mencampur 2 sinyal dari input kiri dan kanan.

BACAAN LAINNYA

Macam macam skema Power Amplifier dalam Blog ini BACA SINI.

Blogspot Yohan BACA SINI.

Kumpulan skema OMBRO koleksi Yohan BACA SINI.

DRIVER 132CC BY JOE SAHARA

Ditulis pada oleh
Balas

Sebuah skema menarik perhatian saya yang saya temukan di medsos di situ mengatakan bahwa layout PCB bernama DRIVER 132CC oleh seorang kreator PCB desainer yang bernama Joe Sahara dari Indonesia.

Di negeri ini, banyak sekali para lay-outer PCB dan desainer rangkaian audio berbagai kelas / topologi.

Desain PCB ini saya peroleh dari medsos dan menarik untuk review. Melihat PCB silahkan LIHAT SINI.

SKEMA TRACING DRIVER 132CC

Berikut adalah skema hasil tracing atas PCB driver 132CC ini:

SKEMA DRIVER 132CC

Note: skema ini bisa saja salah dalam penempatan komponen maupun wiring karena saya hanya berpatokan pada gambar PCB yang tengah saya observasi. Kritik dan saran sangat diperlukan.

Dari skema ini nampak bahwa rangkaian terdiri dari blok:

  • Preamplifier differensial,
  • Penguat Tegangan,
  • Servo Driver,
  • Driver Amplifier 1, dan terakhir
  • Driver Amplifier 2.

Skea DRIVER 132CC ini telah berhasil saya simulasi dan hasilnya adalah respon frekwensinya bagus.

BACAAN LAINNYA

Power Amplifier lainnya dalam BLOG INI.

Blogspot Yohan tentang Skema audio dan POWER ada pada LINK INI.

Aneka skema Power dan Mixer BUILT UP BACA SINI.