Saturday, December 17, 2022

Bonsai X'mas Tree + Amp


To celebrate the holiday season I've prepared a short video. Please note that given the dynamic compression and bandwidth limitations imposed on sound quality by YouTube, I upload videos for the visual aspect rather than their sonic merits.😊


Turntable: Garrard 301
Tonearm: SME 3012 
Phono cartridge: Supex SD900 + conical stylus 
MC step up: Altec 4722 
Bonsai Amp: 720mW per channel SE 171A, coming soon! 
Speakers: Altec 753C

So watch how the 720 milliwatts per channel Bonsai Amp is pushed to soft clipping by Tchaikovsky's "Pas de Deux" from "Nutcracker" driving the Altec 753Cs. πŸ˜‰

Thank you to all my readers and supporters!

πŸŽ„πŸŽ„πŸŽ„Wishing everyone happy holidays and a great new year!πŸŽ„πŸŽ„πŸŽ„







Saturday, December 3, 2022

JEL Loctal Phono Preamp + Tube Shields

 

It's been over five years since I built this loctal preamp. I moved it recently so that it'd be between my two turntables. In this location, I was surprised by higher-than-usual hum and noise levels emanating from the phono section especially when compared to my RCA octal + 76 line stage

Given that it had been playing quietly and flawlessly until it was relocated, I was dumbfounded. Then I noticed that when I put my hand close to either 7F7 tube, the hum and noise got even louder.πŸ€” 

Before taking the preamp out of the system for a thorough check up on the test bench, I searched for a couple of tube shields from my parts bin. 

Voila! The unusual hum and noise vanished.πŸ‘


Sit back and enjoy Alice Coltrane's "Blue Nile" from her album "Ptah, The El Daoud"! π„ž π„’πŸŽΆ