vintage amplifier

I have a full distortion from right channel. From the voltage and signal trace I did I discovered that there is no output voltage and signal from 496 diode.I changed the diode but still nothing I swapped the transistors tr45 46 47 50 from the other channel but still nothing. I swapped the...

hello, first time posting on audiokarma, found so much info and inspiration the past years so let me start by thanks to everyone sharing and asking the right questions. I recently bought a pair of canton quinto 520, the sound is overall impressive, although the bass is missing a bit depth and...

Dear All, I have just received my Sansui AU-101 today in really good cosmetic condition (well chuffed), and fired it up with Wharfedale Denton 80th Anniversary addition speakers (6 ohm suitable for 20w - 100w amps per manufacturers recommendation). However, with loudness turned on, if I turn...

Hi I am new to AK and would like to thank you in advance for any help you can give me! As a teenager I loved my hifi but after I got married and space was limited it got put in a box in the loft...where it has stayed for the last 30 years... until last weekend when I connected my TT (Rega...

Hi All, I'm looking to put together my first HiFi setup and I'm keen to get a late 70s, early 80s receiver/integrated amplifier to pair with some entry level audiophile headphones. I'm struggling to understand matching headphone and receiver output impedance. With info like headphone output...

Huge fan of my luxman l-410, unreal sound blows silver faced 35 wpc vintage pieces away imo in sound stage. A Luxman/Alpine LV-117 just popped up for a decent price locally, it says 110 wpc but I can't find any reviews on its sound. R-117 is a legendary receiver...

I'm testing some old equipment that has been in the family for decades, and noticed that several of the trim potentiometers inside the Luxman MQ68c amplifier have broken apart. They were Helitrim model 91 pots - some 5k and some 10k. I've done a bit of research and it looks like these are no...

Found these two this morning, they are in pristine condition, I am afraid of doing my usual face plate cleaning because I noticed that the printed letters were coming off from the three head cassette deck that I assume came with these two. Is there anyone familiar with these two pieces...

Hello! First post here. I am an American who has been living in Japan for the past 12 years. I bought a Yamaha B-2 a few years ago. It had LEDs and gold plated speaker terminals on the A channel. I paid about $100 for it junk because one channel had no sound. Deoxit fixed that easily! The...

Hello Forum, I posted this to an old forum that didn't get any traction, so I'm posting new. I have a NAD 2200PE that works just fine (kinda). I also tested the tp voltages and they are fine too. I adjusted the DC offset and idle voltages to within parameters. This unit did need new speaker...

Hi AK I have had a similar experience with two pieces of gear I recently purchased - a Sony TA-4300F (active crossover pre-amp) and a Playmaster Pro Series Three Power Amplifier (mosfet power amp sold in kit form locally). I'm wondering if it is a freak occurrence or a thing known to happen...