Just measured bias and adjusted offset on my 9090. I got the offset to ~15 mV on both channels. I didn't adjust the bias because it was no more than 10 mV on either channel.   There's an electrical hum that I can hear when the volume is all the way down. While trying to discover what the...

When I used the headphone jack I could here a very obvious electrical hum when the volume is all the way down. Capacitor issue? It's on both sides as far as I can hear... Probably going to hook it up to the oscilloscope tomorrow.

Just measure the DC offset. The right channel has ~15-20 mV but the left channel has ~180.

Terrible pictures but I got a Sansui 9090 for free. Haven't listened through speakers yet but there is a very audible electrical hum through the headphones and the receiver gets really hot on the metal parts. How hot should it be? I used an infrared thermometer and read about 115F.    ...

Wow. I'm definitely not in a good situation to listen to the amp but I used my phone just to see how it sounded. There is a noticeable buzz even when the volume is completely down and a couple of lamps are out. Obviously there are potentiometer scratching. Anything else I should look for? It's a...

After a few months of checking Craigslist, looking in thrift stores and keeping an eye out, I've found a Sansui 9090 and I think I can get it for free If I can't get it for free, what should offer to someone that isn't interested in audio quality and doesn't listen to music much? What is the...

Quote: The 2000 records are tempting me as well...   I'm in Norman.

Haha, it is a little odd. What would a 2226b be worth if it was in decent condition?

Don't know if you guys in Oklahoma saw the guy in Lawton with the 2000 records, Sony speakers, Marantz receiver, and Pioneer turntable on craigslist. I called the guy and the turntable is a Pioneer pl-520, receiver is a Marantz 2226b, and he couldn't find a model number on the speakers. It's...

http://badbadnotgood.bandcamp.com/   Jazzy and it's really great. Free download at cd quality FLAC and I believe free download at higher quality.

The Bijou is $200 for a kit from glassjar and then another $80 for the transformer. It's supposed to sound really nice as well. I'm still trying to decide on an amp to build.

Quote: Sound doesn't flow. Sound is a wave.   I'm a little confused though. Are we talking about changing the amount of space the driver has or are we talking about adding felt to the inside of the back of a pair of cans?

It's not a change in velocity of the air. It's a change in the velocity of the wave moving through the air. The sound waves can't bounce off of the fabric as well as they can bounce off of the plastic walls. I believe lower frequencies are more susceptible to damping. This results in higher...

Finally, took forever to ship, got my friends running XBMC. It's a sweet little computer. Now we're just waiting on the PI Plate from Adafruit.

1. I can't really comment on that specific equipment.   2. You definitely do not need an incredible digital cable (USB/COAX/optical) and as long as an analog cable isn't trashed or extremely low low low quality, you're fine. Tubes, however, do vary. They sound different and have different...

Quote:   Wow, I didn't know they were coming out with a new album.   Was just listening to   "Libson" - The Walkmen

Man, I really wish we could see more from you. This amp looks great. I know I already posted saying that but I'm just really sad you can't make anything right now.   Really hope you get to create more things!

Ludovico Einaudi, Roberto Cacciapaglia, and Fabrizio Paterlini are all great modern composers.

I believe if you edit a song with something like Audacity you should be able to save it with the same settings and there shouldn't be a drop in quality.   This is based off of my video editing knowledge. I don't have much audio editing knowledge.

My friend used to use a card from Elgato called the eyeTV but the company has a few other options. I know there was a "game mode" that he used because it got rid of all lag.   Their store is http://www.elgato.com/elgato/na/mainmenu/buy.en.html

I've had a lot of rabbits throughout my younger years but I could never get them to do anything like yours is doing in the second picture. What exactly is happening there?

Wow, the amp looks incredible! Really sorry to hear about the neuromuscular issues. Hopefully we'll get to see another project from you.