2PCS Audio L12-2 Power Amplifier Kit 2 Channel Ultra-low Distortion Classic AMP DIY Kit Finished Board

Ordered version 3, according to the photos. Received… Version 4!. Like not fake, but wrote the diyaudio.com, can the author the answer. Is not connected, will add later.

Good soldering but boards damaged on receipt. Output transistors bent due to poor packing but I can fix this.Not tested yet, part of a amplifier project for my YouTube channel.

1 month delivery for DIY amplifier. I don't tested yet , just tested some electronic components :- small transistors looks very good: some has DC gain around 280 and some 380 but very close for same type ( around 2% error );- also tested capacitors : electrolytic caps , Rubycon 100uF has close value - around 95uF and I think I'll change those with 220uF Nichicon Audio . Rubycon 1000uF looks better and has around 1200uF .I'm impressed . If after assembling sound good , I will order some more.BRB soon.

Quality on top! board thick, high quality, divorced good. all items before soldering were tested, verdict Veri Veri Gud! gather layout, послушаю review and confirm. and advise to obtaining a very good set.

Great

Store Name: KaisayaHIFI audio Store

Normal Price: ~~US $43.63~~

Sale Price: US $30.54 (Discount: 30%)

Spesifications

Maximum Power Per Channel: 101-130W

Package: Yes

Channels: 2 (2.0)

Brand Name: Kaisaya

Model Number: KS L12-2

Type: Home Amplifier

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2 PCS Audio L12-2 Power Amplifier Kit 2 Channel Ultra-low Distortion Amplifier Classic AMP DIY Kit/Finished

If you choose diy kit .Need to solder the components by yourself . Thank you

L12-2 Amplifier After class . The rigorously tested high-performance amplifier designed by LJM himself.

L12-2 is mainly based on monitoring, ultra-low distortion amplifier.

The first thing to note is that the lowest distortion does not mean that it may be the best speaker to listen to.

The L12-2 is more suitable for professional users who have a very high level of accuracy and detail.

Its voice tends to be colder and harder. requires attention.

Supply voltage + -55V or less.

Parameters:

Power = 120W /8R + -50V voltage

200W 4R + -50V voltage

THD<0.0005% 1K HZ 10W

SR = 35V/US

Damping factor >200, 8 ohm load

Input Sensitivity = 1.6V Output 120W 8R

Frequency Response Range = 15HZ-50K HZ (-3DB)

20HZ* 20K HZ =-0.02 DB

Static current = 80MA

Voltage Range = DC Positive + Negative Voltage + -12V to + -55V

Voltage magnification = 31 times

L12-2 has exceeded thousands of users since 2006, and it all reflects very good. It is a classic model of the L series.

Stable and reliable, first-class performance. L-Series amplifiers are strictly measured using a variety of instruments, not on the Internet copy of a variety of brand cottage power amplifier board similar.

The L series has undergone years of research and improvement, as well as reliability testing. Please feel free to use it.

If the user believes that they are not satisfied after purchasing, for example, the sound is not as good as a DIY kit, they can be refunded unconditionally.

This is the only one in the entire network.

The spare parts need to be welded by themselves. After the installation is completed, as shown in the figure:

Test chart:

Input signal -THD+N test

When the input voltage is 700MV, the output voltage is approximately 8V ohms at 23VPP.

Test the following picture: Use an 8-Ohm 1000W power resistor.

THD+N approximately = 0.0009%.

Frequency response:

20HZ-20KHZ < -0.02DB

THD+N

In the test if you use a larger capacity of filter capacitors and transformers. There will be less low-frequency distortion.

The test transformer is a dual 24V 200VA. It is 150 yuan in the shop.

The filter capacitor is four 63V5600UF.

Larger capacitors have less low-frequency distortion. This test is for reference only. The actual production is directly related to the transformer and filter capacitor. Will affect the size of the distortion.

Package Contents