arrow_back フリーランスに戻る
F

TDA7388 Sub-Mid Amplifier Design

Freelancer

シェア:
placeKE home_workリモート assignment契約社員 public集約求人 · KE

event2026年8月24日に公開 · verified2026年8月31日時点で募集中であることを確認済みです

US$ 250 – US$ 750 /案件

求人について

I’m putting together a compact home audio system that runs a sealed-box subwoofer and a pair of midrange drivers from a single TDA7388. My plan is to feed the two bridged channels through a JRC4558 low-pass network for the sub, while the remaining two channels stay full-range for the mids. The source will be an MP3 player, so the input stage must accept that signal level cleanly; if you can leave room for RCA, 3.5 mm, or even a small Bluetooth add-on later, all the better. Here’s what I need from you: • Complete schematic showing the TDA7388 output topology, the JRC4558 filter (cut-off around 80 Hz, 12 dB/Oct preferred), power supply filtering, and protections • PCB layout ready for fabrication, sized for a small desktop enclosure and routed for minimal noise between sub and mid paths • Bill of materials with part numbers that are easy to source locally or on Mouser/Digi-Key • Brief build notes—heat-sink requirements, gain settings, and any calibration steps to balance the mids against the sub I’ll test the board on my bench with a sealed 10″ driver and bookshelf mids; stable, hum-free playback at moderate home-listening levels is the acceptance criterion. If this sounds straightforward to you and you’re comfortable with TDA7388 thermal design and op-amp filter math, I’d be happy to see your proposal and timeline.

このまま無料で続きを読む

無料アカウントを作成すると、求人の全文を見て応募できます。

  • badge企業からポートフォリオが見える
  • notifications新着求人をメールでお知らせ
  • favorite常に無料、追加料金なし