Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: plynch on July 01, 2015, 04:55:06 AM

Title: Transformer Heat Concern
Post by: plynch on July 01, 2015, 04:55:06 AM

Hi I've recently noticed that the transformer gets quite hot to the touch. It's not burning hot however it does seem a bit hotter after the speedball upgrade. My question is how hot should I expect the transformer to get on the Crack? I am able to listen to the amp for several hours with no problems though; it just gets kind of hot after extended periods of time. I apologize if this is a silly question but I would just like to confirm whether or not I should be concerned with the heat.

Title: Re: Transformer Heat Concern
Post by: Paul Birkeland on July 01, 2015, 04:57:38 AM

How are your voltage measurements?

The Speedball produces a very tiny increase in heat within the transformer, but it is still run well under its limits. 

Title: Re: Transformer Heat Concern
Post by: plynch on July 01, 2015, 05:03:45 AM

It's been several weeks since I've tested the voltages. When I tested, everything seemed to test fine. I am currently at work at the moment so I won't be able to test again until I'm out of here. I will run another voltage test and post them once I get home.

Title: Re: Transformer Heat Concern
Post by: plynch on July 01, 2015, 12:27:15 PM

Here are my voltage checks.

Terminal          Voltage
1                     72
2                     182
3                     0
4                     182
5                     71                   
6                     0
7                     106
8                     0
9                     107
10                   0
11                   0
12                   0
13                   181
14                   0
15                   200
20                   0
21                   219

Title: Re: Transformer Heat Concern
Post by: Paul Birkeland on July 01, 2015, 12:39:48 PM

Those look quite good, there's no need to be concerned with the transformer temperature.

-PB

Title: Re: Transformer Heat Concern
Post by: plynch on July 01, 2015, 12:45:50 PM

Okay thank you.

Title: Re: Transformer Heat Concern
Post by: Nathan on July 02, 2015, 11:25:57 AM

Fwiw after a hour or more of listening my crack becomes quite warm too. I know the transformer is heating up and I suppose the big tube is also contributing the a hot transformer