Messages

1

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: November 26, 2017, 08:34:27 AM »

My second Full Digital amp.
Took advantage of the singles day sale at AliExpress and ordered the Fei xiang D 802c .
I am very very impressed . I have retired TDA 1541 for the time being.
No hum,hiss and very good micro and macro dynamic.
I built a usb power supply regulator with LM 317 and happy with the improvement.

I think the it is a significant upgrade from the TD1541, amanero usb i2s converter and Tda 7397 based set up that i am using.  The illusion of musicians in the room is the best that i have experienced..
 
Will be building a linear power supply soon to feed the D802.

Sent from my RNE-L22 using Tapatalk

2

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 22, 2017, 01:56:56 PM »

Sumotan.
Very nice room.
Hope to have a chance for audition in future.
Are you in Singapore also?
I have the aya 2 board waiting for attention.
My tube I zator pcb from oliver has been completed and waiting for testing.  Have you tried this iv stage?
So many projects  but so little time.

3

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 21, 2017, 12:43:34 PM »

Sumotan,
Are you posting in diy audio also.
are you a  great fan of TDA 1541 also ?
There is a handful  of chopping board diyers  in kuching.
You are very welcomed to  visit us.
regards

4

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 21, 2017, 12:29:35 PM »

I was playing with this cheap  full digital amp with STA 333 chip .
I bought from here

https://www.aliexpress.com/item/STA333BW-USB-Pure-Digital-Power-Amplifier-Board-With-USB-Sound-Card-DAC-Bass-Treble-Adjustment-Function/32692695340.html

The amp is very very transparent, no hum or hiss with ear to speaker.
It does not has the warmth and seductive vocal of TDA 7297 and TDA 1541 combination .
However, the high frequency is very very clean and extended.
Microdynamic  manifested with vibrato  from vocal is superb.
Soundstage is more stable but less 3D than the other set up .
It  is very engaging as it is very lively and can fool you to imagine that the band is in the room !
If you have the time and sensitive speaker, give it a spin!!

5

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 16, 2017, 11:10:37 AM »

I have already build  Pass F5, Aleph J , DOZ from Elliot  and JLH class A .
Waiting to  be powered up only .
cheers

6

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 15, 2017, 08:25:16 AM »

Thanks jb for kind words.
My set is constantly evolving because of itchy hands.
I am very very surprised at how the 16 ringgit  tda7297 chip perform. It easily resolved 3 layers of soundstage and very stable soundstage.
Try it if you have sympathetic speakers.
The kuching hifi kaki are still active.
Singapore kaki are welcomed.

7

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 14, 2017, 10:18:25 AM »

DAC

8

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 14, 2017, 10:17:20 AM »

more pictures

9

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 14, 2017, 10:11:45 AM »

picture of the simple set

10

HiFi Audio DIY / Re: Really cheap, fun and excellent sound !!

« on: October 14, 2017, 07:48:12 AM »

Unable to post pictures because if size limitations
Good sound is subjective and one must understand what type of sound make you happy.
I like harmonic detail , immersive soundstage and seductive vocal.
I  only diy simple circuits because it is easier to succeed and i feel that they sound natural even though they don't measure well.
In the built correct ground layout and local power supply decoupling is very important.
I follow nelson pass principal of good quality first watt in the amp. 

11

HiFi Audio DIY / Really cheap, fun and excellent sound !!

« on: October 13, 2017, 01:03:15 PM »

I have been diying for many years and want to share my latest set up.
My speaker is markaudio 12 p in superpensil box. 92 db 6inches full range. Cost about RM 2000 in total
Amplifier is tda 7297 chip  amp with a LT 1085 regulated smps power supply . cost about ringgit 100 .
Source is tda1541 with lampizator 6n2p tube output stage  --about RM 500.
I use an old atom processor fan less pc running on lubuntu.
My room is about 200 sq feet.
Well how is sound?
It is lively ,3 dimensional, plays well with vocal , rock and orchestra . piano sound very realistic and life like !!
It is suitable for beginners like myself and no high voltage to harm you.
I hope more diyers can join the hobby.
If there is any interest i can post some pictures