jea48

Responses from jea48

Outlet - Shunyata vs Hubble 20 amp
@jumia   The Shunyata SR-Z1 is a Hubbell HBL 5362 Extra Heavy Duty Specification grade 20 amp Duplex Receptacle. Specifications Face Nylon Base PBT By-Pass Power Contacts .036". (.9) Brass Ground Contacts .031 in. (.8) Brass Clamping Plate Nic... 
Why is it necessary to have gear on the same phase from electrical panel?
@carlsbad said: are you suggesting that the common neutral allows noise from one leg to affect the other leg? No I am not suggesting that at all. What I am saying is the balanced load(s) "noise" on one leg is in series with the other leg and i... 
Why is it necessary to have gear on the same phase from electrical panel?
I ran two circuits to my system, one on each leg. I do keep my system all on the same leg and plug other things into the other leg but that is really just a local thing. @carlsbad What type of wiring method did you use? Did you install a 3 w... 
Why is it necessary to have gear on the same phase from electrical panel?
Correction. I worked with a member that has a single phase 240V to 120V 15KVA outdoor Pad Mount transformer that feeds a 120V only sub panel for his dedicated audio room.) That should read: I worked with a member that has a single phase 240V ... 
Why is it necessary to have gear on the same phase from electrical panel?
The only thing I can think of that would improve things is to keep all the noisy stuff on one side of the panel, like refrigerator, and the cleaner stuff on the other side. Its a myth... No such thing. IF the electrician did his job right and f... 
Toroidal vs EI power amps any difference.
Toroids are prone to mechanical buzzing, vibrating, when fed from AC mains with DC on the Line. Especially large VA Toroids used in power amps. For smaller VA toroids you can buy a plug in DC blocker that will filter out the DC on the mains and in... 
Advice on Repairs for Audio Research VT100 Mk II
@77jovian The ARC VT100 MK III does not require the 6922 input and driver tubes to be biased. Only the output power tubes need to be biased... It can take hours to bias the 6922 tubes in a VT100 or VT100 MK II... http://mycollins.net/audio/art... 
Advice on Repairs for Audio Research VT100 Mk II
Owners Manual for the VT100 and VT100 MK II. https://www.arcdb.ws/Database/VT100/ARC_VT100MKII_manual.pdf Note, page 1: Diagram indicates relative positions of all (16) tubes on the two circuit boards as viewed from the front and looking down f... 
Wall socket for Ethernet/ Cable outlet recommendation
jea48 3,951 posts 11-23-2022 at 05:25pm    I like Panduit brand for the Ethernet RJ45 data jack. The  RJ45 CAT number jack you use depends on the Cat number of the 4 pair twisted cable. Example, if the cable is CAT 5e then use ... 
Advice on Repairs for Audio Research VT100 Mk II
There are 8 power tube 100 ohm 5% 3 watt screen resistors. (Part # 43100208) ARC uses the resistors as fuses. The wattage value should never be increased. There are 8 power tube plate 1 ohm 2 watt 5% BLUE LINE resistors. (Part #43100004.) https:... 
Advice on Repairs for Audio Research VT100 Mk II
@edward78   The VT100 MK II first came out in 1998 though 2000, (maybe through the spring of 2001). The amp is at least 21 years old. I am surprised the Tech that gave you the price for the repairs didn’t mention that. How about the electrolyti... 
Advice on Repairs for Audio Research VT100 Mk II
@edward78 said: I’m fine with the price of the resistors, 6550 tubes, and labour but the price for the 6992 tubes seems too high. On the JJ Tubes website, these tubes sell for about EUR 20 a piece and they do not even offer matched sets of 6992.... 
Another dedicated circuit question
Different potentials always try to equalize to the same potential thus there will be current flowing between the two (or more). It will always use the path of least resistance. The current will take any path that is provided... As for using mo... 
Another dedicated circuit question
@immatthewj said: I was ASSUMING that a 20A breaker should not only be in front of, at minimum, 12 gauge wire, but also a 20A breaker. That is correct. The breaker determines the ampere rating of the circuit. 20A breaker, 20 amp branch circuit... 
Another dedicated circuit question
@immatthewj , on page 3 of the instruction manual (pdf) is where it says to connect it to a 15A outlet. "4. The PST-8 should only be connected to a 120 VAC, 60Hz, 15 amp grounded electrical outlet." "Connected to a 120V 60Hz 15 amp grounded ...