MJ15024 Bipolar 2x35w 8 Ohm Stereo Amplifier Class AB

MJ15024 Bipolar Stereo Amplifier Class AB

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49,92 € tax excl.

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Shipping date: 17-12-2018.

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Module MJ15024 amplification

2x35WΩ Class AB / Bipolar Transistors MJ15024 / MJ15205

Module high fidelity amplification

The amplifier develops a sound with great dynamics and can easily handle low frequencies thanks to two bipolar transistors MJ15024 / MJ15205.

A two-channel, high speed and low noise operational amplifier TI5532 is mounted on removable DIP8 port. The user can therefore replace it at his convenience and experiment with other sound taste according to the specifications and characteristics of the audio system.

The output stage works in class AB sliding. The amplifier is thus very precise when it comes to little details and can run on a smaller power supply (smaller in terms of size and budget) than its in pure class A counterparts. This model will adapt perfectly to home use and can effectively sonorize a medium-sized room.
A relay OMRON G2R-2 directly filter DC output to avoid wearing prematurely the speakers.

Its design is thought for a relatively simple integration with a mounting bracket 90 ° for easy installation on a heatsink (not supplied). Similarly, the module has its own integrated linear power supply. The latter operates a high-speed diode bridge (25-50ns) as well as voltage regulators LM317 & LM337.

The connection is simple and can be customised. The inputs and outputs are simply pcb contact pins. The AC power input lays in a Phoenix terminal connector. The card can run from 2x15VAC to 2x26VAC (Please mind the specifications of the operational amplifier before changing the power supply).

Caution, this module requires two 10.000μf capacitors 50V to operate. These are not included with the card.

PCB DIY Audio audiophile amplifier
Center Mounting hole spacing and dimensions
scheme amplification
connection scheme
Classsliding AB
Amplification power2x35W 8Ω @
2x 70W Ω 4Ω
inputsTwo analog channels
PCB contact tip
Frequency response4 Hz - 350kHz (-3dB)
THD<0.01% @ 100W / 1000Hz
Slew Rate38V / microseconds
SNR> 99dB
Mounting hole spacing116 x 56mm
Dimensions179mm x 100mm
Power supply14-26 VAC x 2 (≈ 300VA) 4.5A
Phoenix Terminal
Data sheet
Channel2 channels (Stereo)
ClassClass A / AB
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Average votes
4.5 / 5
2 reviews
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Pas mal
Je lui ai mis un transfo 160VA 2x20V et 2 condo Mundorf M-Lytic AG 40V 10000µF.

Comparé à un ampli Atoll IN30 (~350€) sur 2 mois, je préfère l'Atoll qui je trouve donne un son plus doux mais c'est juste une affaire de goût. Je dirais que cet ampli a une super dynamique et un son ultra précis / agressif / violant / dure. Je le conseillerai plutôt à ceux qui écoutent beaucoup d'électro.

Sinon, j'ai fixé le dissipateur de cet ampli directement à un boitier tout en métal et il le fait bien chauffer, même au repos. Rien d'inquiétant mais je n'aime pas trop (vive les MOSFET ^^).

Autre chose, durant son premier mois d'utilisation quelque chose vibrait de temps en temps. Je pense que c'était le relais de tempo.

Facile à monter, il rivalise avec des ampli 2 fois plus cher, mais chauffe beaucoup. Son "dynamique" et "dure" plutôt pour de l'électro.
This review has been posted for MJ15024 Bipolar 2x35w 8 Ohm Stereo Amplifier Class AB
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Date :
Très bien fabriqué
Petit kit extrêmement bien conçu et robuste. Très facile à mettre en oeuvre pour un débutant et ayant un bonne capacité en courant car tout est surdimensionné, pont de diodes, transistors pilotes sur dissipateurs séparés, protection et tempo à l'allumage intégré, vraiment top pour le débutant. Attention, ne surtout pas dépasser les 2x26VAC recommandé.
This review has been posted for MJ15024 Bipolar 2x35w 8 Ohm Stereo Amplifier Class AB

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