THE ORRONOCO AUDIO DIY

The Pioneer KEH-P9750 is a hi-end car cassette player built around 90's. The audio features in this head unit is beyond of it's era. It has built-in sound processor, 6 channel time alignment, 13 band equalizer and auto EQ by using the mic for the sound adjustment. It also included internal power amplifier rated 4 x 45 watt which enough for simple car audio setup. I will not using the cassette player on this Pioneer KEH-P9750. It is outdated for today media standard. I also never play music from the cassette anymore. This head unit is great. I don't want to waste this head unit consider so many advance audio features on it. T hat is why I will using this Pioneer KEH-P9750 on my car as an external DSP to adjust and tailored the overall sound.

It is been a while since I built this Tripath TK2050 amplifier and I using this amplifier ever since.  As usual, I still curious with my own built and sometimes I need to open it up again. It is sometimes relaxing for me to see my own built, but others than that, I always try to find any parts need to be upgrade.  

Audio Technica is the most well known brand for their headphones. Most of their headphones are also use by professional application related to audio. This is very iconic brand and especially for the ATH-M50x, this good looking headphone is really catch my attention. In this weekend, I have a chance to test the ATH-M50x Limited Edition version. I will connect it with my new build  LME49720NA CMOY headphone amplifier.

It was on Friday and heavy rain outside. As usual in that condition, the traffic jam from my office to home will be very high. So I decided to go to my favorite electronic parts shop nearby instead directly went home. Firstly, I don't have any plan to buy anything. I just came there to have a little chat with the owner. But things changes when I saw this high quality PCB of the headphones amplifier. I certainly want to make one for myself.

I wish you have following this blog and you will aware that I am using a pair of DIY small full range speaker in my audio setup. This speaker is using a single driver from Vifa TG9. It is a 3.5 inch full range driver which the sound is surprisingly wonderful. You can read my review of Vifa TG9  here . As always, DIY audio is a journey. I wish I could have a bigger driver for the single driver full range speakers as the replacement for my current speaker using Vifa TG9. Naturally the bigger driver should have better bass response. That is why, from few days before, I really put my interest on this Visaton SC13, a 5 inch full range driver that I think it could perform really well for the full-range speaker project. So how good is this Visaton SC13 compare to the Vifa TG9? I will reveal in this post.

I make this post after I cleaned my storage room last weekend. I found this unique small car amplifier. It is Nakamichi PA-100. This finding is surprising me since I don't know that I still keep this old school amplifier until now. If I don't mistaken, I bought this small amplifier in the second hand condition around late 90's and I have no idea where is it now until I found it.  

Building an amplifier is fun. Like we are all into this hobby because it is fun. Especially when we can make something like this, we starting from the idea and planning, gather all components to make it a piece of, and when the result is beyond expectation, the excitement is deeper. Same like the background when I plan to build this amplifier. I tried to combine the First Watt B1 buffer pre-amp with the Gainclone LM1875 amplifier. First, I like sound of the LM1875 amplifier and I also like the idea behind the First Watt B1 buffer pre-amplifier, is to lowering the output impedance to feed to the amplifier. So how if they are combine in one box?