Showing posts with label Audio Technology. Show all posts
Showing posts with label Audio Technology. Show all posts

Sunday, September 3, 2023

Technics Cassette Deck RS-BX828 Maintenance and Mod

The RS-BX828 cassette deck from Technics is a high-end model released in the early 90's. It features 3 Heads, Direct Drive mechanism and 3 DC motors being 1 quartz direct-drive motor for the reel, one for the capstan and one motor for opening and closing the cassette compartment.

Such robust motor construction allows for a very small wow and flutter of just 0.03%. 

The Technics RS-BX828

Monday, February 20, 2023

Repairing a "mute" Technics SL-1600MK2 turntable

 The Technics SL-1600MK2 is basically an older brother of the famous SL-1200MK2. It has an identical heavy platter and a similar overall body weight. On top of the robustness and features of its younger and famous sibling, it has the benefit (to some, a downside) of an auto-return, soft touch buttons for cueing.

A nice shot of a SL-1600MK2

Unlike its popular cousin, the SL-1600 series were only manufactured from 1977 to 1981, meaning all models you may be lucky to find on the market are over 40 years old. Adding to the fact that this model has a more complex circuit board, tone arm and cuing mechanisms, proper maintenance is a must to keep this turntable spinning!

Monday, March 8, 2021

Repairing the king! Bringing a Sony D-Z555 back to life and giving it a new rechargeable battery

Like many others that grew up in the 80s/90s, you probably have fond memories of going to school listening to your Sony Walkman or later on their Discman. Among the many models of portables that Sony made over the years, a few top of the line models remain in the minds of collectors and audiophiles alike as the best sounding portables ever made. Walkmans like the WM-DD9, WM-DD100, WM-DC2 with the king in terms of sound being the (semi-portable) WM-DC6 - which reigns as one of the best portable cassette players ever made.

On the realm of digital music, Sony had their Discman series. This line has a few players that commonly make the top of the list of the best players ever made are the D-Z555 (also called D555), D10/D100, D35, D303 and D350. More often than not, the throne of the best Discman ever made goes to the D-Z555 for a combination of features, looks and sound quality.

Note that the best portable disc players were made in the early 90s and below, when it was considered a luxury item made for audiophiles. When the Discman became more main stream, some features were added such as ESP (Electronic Shock Protection) or later MP3 discs playback, but with these new "features" it came price cuts and the end of their high-end units.  

The Sony D-Z555 was released in 1989 and it features not one but two (!) backlit LCDs displays, one of the displays spotting a spectrum analyzer (how cool is that for a portable!?). Inside the unit, you will find two audiophile-grade PCM66P DACs and for the very first time on a portable and consumer device: 8 times oversampling and a DSP chip. The player also spot a digital optical output (which was a very new technology in 1990, especially on a portable unit!), a remote port (for an optional IR remote) and line out. 

The Sony D-Z555 (or D-555) and it's 2 backlit LCD displays in action
PS: testing it with a great game soundtrack from the time the D-Z555 was released (1990)!

Sunday, July 12, 2020

Keeping the Technics SA-GX910 (or SA-GX710) running cool - Fan mod with speed control

In today's post, I would like to share a mod that I just did to my old-time favourite Technics receiver: the Technics SA-GX910. Before going into deeper into this mod, here is a little history on these receivers and why they are (still) one of my favourite receiver. 


This receiver is a top-of-the-line from Technics from the early 90's (1991 to be exact). Many agree that is not only a great sounding receiver, but also a great looking one. With it's graphic equalizer and many MANY buttons, you can fully customize the sound to your liking without the need of going in out of menus like in today's received. Plus, you can monitor all the settings in the gorgeous VFG display. 

The lower end model SA-GX505 (also a great sounding receiver!)