TDA7388 Sub-Mid Amplifier Design

@Mahihassi

With my extensive knowledge and experience in audio engineering, circuit design, and signal processing, I am the ideal candidate to assist you with your TDA7388 Sub-Mid Amplifier project. Equipped with some of the most advanced tools in the field, including Altium Designer, KiCad, Eagle, and EasyEDA, I can guarantee a top-tier PCB layout that prioritizes minimal noise interference between the sub and mid paths. In addition, I have had comprehensive experience working on firmware development projects with similar requirements as yours; including thorough familiarity with embedded C/C++, RTOS, DMA, and peripheral drivers- all of which are essential for this particular project. Moreover, I am well-versed in thermal management designs to ensure optimal functionality of devices like the TDA7388. Furthermore, my background in electrical and embedded systems engineering has trained me to pay meticulous attention to detail when it comes to ensuring that the supplied parts are sourced accurately for minimal errors or setbacks during production.

@MuhammadUzair16

Hi, I am an embedded systems engineer with over 16 years of experience designing low-noise electronics and taking consumer products from concept through production. I can develop the complete amplifier schematic, 80 Hz second-order JRC4558 low-pass stage, protected and well-filtered power section, compact fabrication-ready PCB, sourced BOM, and practical thermal/build notes. I would first verify the subwoofer topology because each TDA7388 channel is already configured as BTL internally, so two outputs cannot be combined like conventional single-ended amplifier channels without careful consideration. I’ll then calculate the filter and gain structure, separate high-current and small-signal return paths, size the copper and heatsink for reliable operation, and complete design-rule and connectivity checks before delivery. What supply voltage/current capacity and speaker impedances will you use for the 10-inch sub and mids? I’d be glad to discuss the details and recommend the safest output arrangement.

@amelectronics

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.

@mairajali11

With over 8 years in the field, I bring with me an abundance of experience that impeccably aligns with the demands of your project. My proficiency in Circuit Design, Electrical Engineering, Electronics, Embedded Systems, PCB Layout, and Signal Processing - coupled with my impeccable work using popular tools such as Eagle, Altium, KiCAD and EasyEDA - create an empowering amalgam for this job. A testament to my expertise is my status as a Preferred Freelancer in the top 1% of skilled professionals. Moreover, my journey as a verified Electrical/Electronics Engineer and a Professional PCB Designer has uniquely prepared me for challenges as specific as yours. Some of my notable experiences include designing circuit boards for audio applications and thermal management of PCBs - both of which are directly relevant to your proposed system. My commitment to quality coupled with disciplined adherence to deadlines has earned me high repute amongst past clients. To top it off, I am available around the clock for discussing your project. Let's collaborate and shape your vision into a reality!

@cpp2048

It looks like you have 3 projects related to audio system developments. I can assist with my 35 years of experience in audio technology and I can design everything that you are in need of. Let's have a detailed discussion and we can negotiate on the pricing once we settle with the design plan.

@markoa7

Being an experienced electrical engineer with a strong background in circuit designs and PCB layouts, I assure you that I am the right fit for your compact audio system project. My proficiency in power supply circuits and multilayer PCB designs relevant to your needs, combined with experience in thermal design and op-amp filter maths confirms my capability to handle your project. Throughout my career, I have been driven to create innovative and high-quality solutions, transforming ideas into reality. This aligns perfectly with your requirements as you strive for stable, hum-free playback. My mastery of microcontrollers and communication protocols makes me confident that I could not only meet but exceed your expectations in designing an efficient input stage for your MP3 player. Lastly, I understand that reliability is crucial for any electronic project. By sourcing components locally or on Mouser/Digi-Key, I will ensure that the bill of materials is convenient and the design robust. Let's discuss further so together we can bring your vision of a seamless audio experience to life.

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@debosx

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal

@yaroslavmark

Hi, I’m a senior electronics engineer with 10+ years in audio, embedded, and mixed-signal PCB design, having developed 30+ production/prototype boards with low-noise analog signal paths and power stages. Approath ✅ I will design the TDA7388 topology with correct BTL loading, thermal margins, decoupling, speaker protection, and controlled grounding to minimize hum and crosstalk. ✅ I will implement the JRC4558 80 Hz, 12 dB/Oct low-pass using calculated component values, input-level headroom, gain control, and a clean interface for future RCA/3.5 mm/Bluetooth options. ✅ I will complete the compact PCB in KiCad/Altium with separate sub/mid routing zones, short high-current speaker paths, solid analog ground strategy, thermal copper, and fabrication-ready outputs. ✅ I will provide a sourceable BOM, heatsink guidance, gain/balance settings, and bench calibration procedure for your 10″ subwoofer and bookshelf mids. Questions: ✅ What is the target supply voltage/current and preferred adapter type (e.g. 12–14.4 V DC), and what continuous output power do you expect per channel? ✅ What impedance are the subwoofer and midrange drivers, and do you require any specific enclosure/PCB maximum dimensions? ✅ Should the sub channel use the two BTL outputs as a combined mono sub path, or should I implement a separate summed/preamp stage before the TDA7388 inputs? Best, Yaroslav

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@azraazeen9

Hello, i am ready exited to work you as i read your job description I am also an expert in making 2d,3d modelling and animating characters 2dautocad drawing ,elevation, solid work, Revit ,FBX ,Unity, Render also interior and exterior design. I have experience in field of more than 10+ years. I can Create Intro and Explainer Videos. for products and companies. Kindly check My Portfolio as well. Hope for your very soon reply. Thank you

@electronicsdone

Dear Client, Yes—this is feasible, but I would first validate the subwoofer connection. The TDA7388 already uses BTL output stages, so the sub load, voice-coil arrangement and channel allocation must be defined correctly before the filter and PCB are frozen. PCB Must Innovations brings 30+ years of electronics experience across audio amplifiers, active filters, op-amp signal conditioning, power-supply filtering, thermal design, PCB layout and prototype validation. I can own the complete schematic, JRC4558 ~80 Hz / 12 dB-oct low-pass stage, input conditioning for the MP3 source, TDA7388 implementation, protection, grounding, thermal planning, PCB, BOM and build notes, while leaving sensible expansion points for RCA/3.5 mm/Bluetooth. The amateur trap is getting sound on the bench but also getting hum, clipping, thermal shutdown or an unhappy sub load. Haha, the bass should shake the room—not the power rail. I’m happy to offer a free consultation first so we can confirm speaker impedance, supply voltage and enclosure constraints before layout starts. One question: is your 10-inch subwoofer single-voice-coil or dual-voice-coil, and what is its impedance? Message me with that detail and I’ll tell you the safest channel/topology arrangement before you commit. You’ll get a clean, stable design—not just a loud one. Kind Regards Prat PCB Must Innovations

@ssumitkumar7800

With deep appreciation for the work that goes into designing high-quality audio systems, I'm confident that I'm the right choice for your project. Over the years, I've become well-versed in all aspects of electrical engineering and electronics, with a particular focus on embedded systems and signal processing. My proficiency extends to PCB layout, use of tools such as Ki Cad, Altium and more. Thus, your desired blueprint would be handled with precision and efficiency. Moreover, I am no stranger to maintaining optimal audio quality while maximizing functional capabilities. In line with your project, this means I can successfully design and implement a TDA7388 output topology that meets your specific power filters, protection needs, gain settings and more. My experience extends to incorporating low-pass networks like JRC4558 for exceptional filtering with your cutoff preferences in mind.

@bohdan38

As a senior Embedded Hardware Engineer, electrical systems are my bread and butter; so when it comes to your TDA7388 Sub-Mid Amplifier Design project, rest assured that I've got you covered. With years of experience in PCB design, I can furnish you with a compact yet efficient layout that minimizes noise and maximizes performance between your subwoofer and midrange drivers. Not only do I boast skills in firmware development, power systems, and sensor interfaces - all of which are necessary for this project - but from my projects including IoT devices and smart sensors, I've honed a meticulous eye for detail which will ensure minimal unwanted hums or interference during audio playback. Finally, I bring to the table a relentless focus on effective communication and practical engineering. I value clean documentation, reliable firmware, and manufacturable PCB designs and this would be no exception. Partner with me on this project and let's deliver a top-tier audio system that meets all your specifications while providing stable and hum-free playback for your home listening pleasure.

@alluankit01

Hi, I can design the complete TDA7388-based compact home audio amplifier with bridged subwoofer output, full-range mid channels, JRC4558 low-pass filter, PCB layout, BOM, and build notes. My approach will be to first confirm speaker impedance, supply voltage, enclosure size, input connector preference, and expected listening power. Then I’ll design the TDA7388 output stage, JRC4558 80 Hz / 12 dB octave low-pass section, input conditioning for MP3 line level, power filtering, grounding, and protection layout. I’m comfortable with: * Audio amplifier circuit design * TDA7388-based amplifier layouts * JRC4558 active filter design * Low-pass crossover design * Bridged subwoofer output planning * Full-range mid channel routing * Low-noise PCB layout * Power supply filtering * Thermal and heatsink calculations * BOM and fabrication files Deliverables: * Complete schematic * PCB layout ready for fabrication * Gerber and drill files * BOM with sourceable parts * Input connector/add-on notes * Gain and balance notes * Heatsink and PSU guidance * Build/calibration instructions I’ll focus on a stable, hum-free, compact amplifier design suitable for moderate home listening with clear separation between sub and mid signal paths. Best regards Ankit

@Aaleen110

The TDA7388 has two possible output configurations for this job, bridged or parallel. I would pick bridged for both subwoofer and midrange channels, so the amplifier can deliver more power to the drivers. I would build the schematic first, starting with the TDA7388 output stage showing the bridged configuration, then the JRC4558 low-pass filter at 80 Hz with a 12 dB/Oct slope, also in bridged mode. Power supply filtering with appropriate capacitors and a simple protection circuit against DC offset will be included. For inputs, I will plan space on the PCB for RCA connectors, and also accommodate a 3.5mm jack if needed, so the MP3 player signal is accepted cleanly. The PCB layout will be sized for a small desktop enclosure, with careful routing to minimize noise between the subwoofer and midrange paths. Track record on here: 100% on time, 100% on budget, 5.0 across 8 reviews. This job mentions a Bluetooth add-on. What kind of power and interface considerations would that need? Let's set up a short call on Freelancer to cover the final schematic details and the desired PCB dimensions.

@ansara73

Hi, Nice clean plan - the TDA7388's BTL outputs bridge naturally for the sub. I've designed several amps in this class, so let me flag the two things that decide whether your board is hum-free. First, grounding. Mixing a subwoofer path and mid paths on one small board fails when signal and power grounds share copper. I route a star ground at the supply reservoir caps and keep the 4558 filter's return separate from the speaker returns - that's where most desktop builds pick up their hum. Second, thermals. The 7388's tab needs a real heatsink even at home levels; I'll spec one from actual dissipation math at your load, not a guess, and note it in the build docs. For the filter, I'll do a Sallen-Key 2nd order at 80 Hz (12 dB/oct as you asked) with values from E24 so you can source everything locally or at Mouser/Digi-Key. Input stage scaled for MP3-player line level, with pads for RCA/3.5 mm and a header where a Bluetooth module can drop in later. You'll get the full schematic with protections and supply filtering, a fab-ready PCB sized for a desktop enclosure, the BOM, and build notes covering heatsink, gain, and how to balance the mids against the sub by ear plus a simple test. I can deliver the complete package in 4 days. My bid is $300. Best regards

@anjalio22

I can design and deliver your complete TDA7388-based sub/mid amplifier, including the full schematic, JRC4558 80 Hz 12 dB/Oct low-pass filter, power filtering, grounding, and protection circuitry. I’ll carefully configure the bridged channels for the sealed subwoofer while keeping the remaining channels full-range for the mids, with clean MP3-level input and provision for RCA, 3.5 mm, or future Bluetooth integration. I’ll also create a compact, fabrication-ready PCB with careful grounding, short high-current paths, thermal considerations, and separation of the sub/filter and mid signal paths to minimize noise and hum. You’ll receive a complete BOM with readily available part numbers, plus build notes covering heatsinking, gain, power requirements, and sub/mid level calibration. I’m experienced with audio amplifier design, op-amp filter calculations, PCB layout, and thermal/current considerations. I can provide production-ready design files and support bench testing/debugging as required. Give me one opportunity to handle this project. I’ll deliver accurate, practical, and well-documented results within the agreed timeline.

@techotd

As an experienced freelancer at the helm of TechOTD Solutions, I am uniquely positioned to provide a high-quality output for your TDA7388 Sub-Mid Amplifier Design project. With over a decade of expertise, our team has honed invaluable skills in developing embedded systems and prototypes, including relevant experience with thermal design and op-amp filter math that are crucial to the success of your project. At TechOTD Solutions, we are not just limited to software and mobile app development; we thrive on complex projects that require finesse in physical design applications. In fact, our broad range of services covers various aspects relevant to your project such as Custom Software Solutions and Website Development, which couples with our ability to create clean, scalable code. These skills will strongly benefit your project in terms of producing a complete schematic and PCB layout that meet your requirements aptly. Moreover, our commitment to on-time delivery, post-launch support and maintenance is unrivaled. We prioritize client satisfaction above all else and have strict quality control measures in place to ensure optimum performance, reduced noise between sub and mid paths, and stable playback at any volume levels. By choosing Expect nothing but excellence from TechOTD Solutions. Best Regards Arun