User Panel
User Panel
User Panel
|
Posted: 12/16/2012 4:01:05 PM EDT
[#1]
The Chinese 572B's are not the end of the world. I would try to find some NOS 811A's from Cetron or RCA. If those are unobtainable then get the Taylor 572B's from RF Parts. It is their house brand of Chi-Com tubes but at least they test them before they sell 'em.
I'll dig through by tube stash and see if I have anything good. I may have a quad set of both. Who the hell knows 
ETA: Here are some on flee bay. The price isn't too hateful. Of course my tube sticker shock has been screwed up ever since I bought an Alpha it takes a pair of 3cx800a7 tubes. BTW this is a pair of Chinese ones. I bought two pair of NOS eimac 
|
|
|
|
Posted: 12/16/2012 4:16:15 PM EDT
[#2]
Yeah... I've seen some of those pricey tubes. Insane...It's nice to have a little extra power, but unless I start hemmoraging money, there's no way I'll ever be at that level. For what I need, the 811H works.
I know I've heard the svetlana 572B tubes are great, and the Cetron/RCA 811As as well. But the off brand 811a and 572bs i haven't heard much about. My only concern with buying NOS is whether they are still good. Naturally, a reputable sellerwill have a good warranty, But I've had enough bad Ebay experiences to buy tubes from just any seller. |
|
|
|
Posted: 12/16/2012 4:32:49 PM EDT
[#3]
Quoted:
Yeah... I've seen some of those pricey tubes. Insane...It's nice to have a little extra power, but unless I start hemmoraging money, there's no way I'll ever be at that level. For what I need, the 811H works. I know I've heard the svetlana 572B tubes are great, and the Cetron/RCA 811As as well. But the off brand 811a and 572bs i haven't heard much about. My only concern with buying NOS is whether they are still good. Naturally, a reputable sellerwill have a good warranty, But I've had enough bad Ebay experiences to buy tubes from just any seller. If you are worried about bad tubes, buying on ebay or at a hamfest isn't for you... I would recommend buying some Taylor 572b's from RF parts and be done with it. |
|
|
|
Posted: 12/16/2012 4:36:04 PM EDT
[#4]
Quoted:
If you are worried about bad tubes, buying on ebay or at a hamfest isn't for you... I would recommend buying some Taylor 572b's from RF parts and be done with it. Well...I've heard horror stories. And this is my first tube operating device. 
|
|
|
|
Posted: 12/16/2012 4:42:28 PM EDT
[#5]
Quoted:
Quoted:
If you are worried about bad tubes, buying on ebay or at a hamfest isn't for you... I would recommend buying some Taylor 572b's from RF parts and be done with it. Well...I've heard horror stories. And this is my first tube operating device. Horror stories abound. No just because people are crooks, but because vacuum tubes are unstable by nature. |
|
|
|
Posted: 12/16/2012 4:46:03 PM EDT
[#6]
Get a matched set of 572b and be done with it. They will last for along time.
811 tubes are not as beefy as 572s but they generally last a long time as long as they are mounted vertically and not abused a lot. I've melted my share of 811 while running a home built amp. Back then 811s cost next to nothing. LOL. 
|
|
|
|
Posted: 12/16/2012 4:51:33 PM EDT
[#7]
So far, I haven't nuked the 811A's, so I must be doing something right.
I don't mind spending a little more for some 572B's from RF parts, as they seem to be more durable. Anyone done the swap before? Some sites say drop in, others have elaborate alignment and procedures. |
|
|
|
Posted: 12/16/2012 5:00:29 PM EDT
[#8]
The AL-811H is a well designed amplifier. Its big draw back, and real benefit, is the weak link being the power supply. The supply will turn things down if you get to over driving the tubes.
|
|
|
|
Posted: 12/16/2012 5:25:55 PM EDT
[#9]
Have we all forgotten that this is ARFCOM? There is only ONE correct answer:
Get Both!
|
|
|
|
Posted: 12/17/2012 5:18:05 AM EDT
[#10]
RF Parts matched set of Taylor 811A. Done.
AL-811 three tube unit owner here. |
|
|
|
Posted: 12/17/2012 5:41:58 AM EDT
[#11]
Quoted:
Have we all forgotten that this is ARFCOM? There is only ONE correct answer: Get Both! Well, I already have the factory 811A tubes, so I guess the "arfcom" answer is 572B. 
all in all, looks like i'm leaning towards the 572B. Gonna have to wait till after the holidays. If it's Taylor/chicom 572Bs, or Svetlana for ~$50 more, I may pony up for the Svet. But we'll see...As mentioned, the amp works great as is. But i'd like to to have a spare set on hand, just in case. |
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
