Which tube does my amp use? 845 or 211

[Zen Mod]

Zen Mod,

Do you have experience measuring or working on amplifiers?

more than 20 yrs of service work

 

[tinitus]

since this amp is without tubes, one could suspect it to have a failure

if so, this seems like it could be really tricky

I think a real expert is needed

 

[HP8903B]

I really appreciate all of your concerns.
I will do more research on safety tips. So far I know to wear shoes with rubber sole, wear rubber gloves, and only use one hand whenever possible.

I live in Austin, TX

 

[HP8903B]

really though, start this amp with a varible transformer.

I don't have a variable transformer. I do have five 120V to 100V stepdown transformers. I could plug several or all five of these in series to get the input voltage down. Then remove each one as I want to raise the input voltage. What do you think of this method?

 

[HP8903B]

since this amp is without tubes, one could suspect it to have a failure

if so, this seems like it could be really tricky

I think a real expert is needed

Yeah, you might be right.

Right now I just want to determine whether it uses 845 or 211. If it is not working then I will deal with it another way.

 

[pieter t]

Since you live in Austin TX ask SY

 

[pieter t]

I think SY is also the right guy to slow you down a bit....

 

[HP8903B]

Who is SY?
I tried to look up SY but couldn't find this member.

 

[tomtt]

I live in Austin, TX

you might be able to get some pizza outa this.

Sy?

I don't have a variable transformer. I do have five 120V to 100V stepdown transformers. I could plug several or all five of these in series to get the input voltage down. Then remove each one as I want to raise the input voltage. What do you think of this method?

i'd have to be present, to make any sort of call about this.

 

[HP8903B]

If I plug in all 5 120V to 100V transformers one after another, I will bring the voltage down to about 50V going in the amp.

Are you recommending using a variable transformer so that I can work with a lower voltage at first? Any lower input voltage will not give me an accurate reading.

 

[Zen Mod]

Who is SY?
I tried to look up SY but couldn't find this member.

http://www.diyaudio.com/forums/members/sy.html

 

[pieter t]

You can find SY in the member list and send him an email.
By the way he is here now.

 

[HP8903B]

I emailed Stuart and he replied. I will bring the amp to him.

Thank you guys.

 

[jrenkin]

Let us know how it turns out!

 

[Zen Mod]

naah .....

SY isn't experienced enough ........

 

[kevinkr]

SY is definitely the go to guy in that neck of the woods.. 😀 He'll get you sorted out. Report back on the pizza.. 😀

 

[HP8903B]

Yes, I will definitely let you guys know the result.

I might have to treat him something better than pizza.

In case you guys are wondering, I will be using this amp for the TAD TL-1601a woofer in my TAD 4-way active system.

 

[kevinkr]

Yes, I will definitely let you guys know the result.

I might have to treat him something better than pizza.

In case you guys are wondering, I will be using this amp for the TAD TL-1601a woofer in my TAD 4-way active system.

Actually I was referring to SY making you pizza, it's quite legendary, and I hope to get to Austin someday to hear his system and try some of that pizza.. Yeah, you'll owe him big time.. LOL 😀

 

[HP8903B]

OHH, I see. I am really looking forward to this now.

Here is another reason for you to visit Austin: you are welcome to come by and listen to my system.

 

[Zen Mod]

why you don't give us some porn ?