|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum |
  |
|
|
|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving |
 |
|
|
Thread Tools | Search this Thread |
28th June 2008, 09:10 AM
|
#1 |
|
diyAudio Member
Join Date: Jan 2008
Location: Athens, Greece
|
Quad Ii Tubes Replacement
Hi,
I am trying several tubes to a Quad II pair. I tried 6L6G, Russian 5881 (6p3n), GEC KT66, EL37, and I will try also the EL39. It seems that EL37 sounds better than KT66, KT66 better than 6L6G, 6L6G better than Russian 5881 (6p3n). The cathode resistor was a 180 Ohm /3W. I replaced for a 180 Ohm/5W. I was looking for information in data books and I find that the suggested cathode resistor for the original KT66 is 160 Ohm, same for the 6L6, 120 Ohm for the EL37 and no info about EL39. I suppose that when I am using EL37 I have to change the 180 Ohm cathode resistor for an around 135 Ohm (180/160*120). What about EL39, is 135 Ohm the correct resistor? What about 6550, is it suitable? I will try also to replace the EF86 for EF37A, has anybody the experience? |
|
|
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Beard P35 and Tubes Replacement | greytear | Tubes / Valves | 4 | 30th September 2010 08:40 PM |
| FOR SALE: 6528 Tubes (Used/Tested Quad) | Diogenio | Swap Meet | 4 | 30th April 2009 01:43 PM |
| quad 303 pcb -- direct replacement / modification | bigpanda | Swap Meet | 1 | 2nd October 2008 05:48 AM |
| Tubes: NOS Cetron JAN 6336B quad set | wildmonkeysects | Swap Meet | 0 | 1st May 2008 02:52 AM |
| Replacement driver boards for the Quad 303 | Rjones5296 | Solid State | 4 | 7th January 2005 03:09 PM |
| New To Site? | Need Help? |
