Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: cCasperTFG on April 22, 2015, 11:17:20 AM

Title: Crack problem, left signal sounding like a badly blown speaker.
Post by: cCasperTFG on April 22, 2015, 11:17:20 AM

Now, the headphones I have been using to test the Crack are functioning perfectly, so that is not where the effect is coming from.

Right after finishing the assembly of my Crack (have not touched the speedball add on yet) I turned it on and had a hum on the left channel, a likely ground loop. I seem to have gotten rid of the hum but it sounds like a fart on the left side. The right is working perfectly.

Does anyone know what might be wrong? I have desoldered and resolver parts I thought might be causing it, but have not made any progress. If anyone can help me, or even let me send it to you to possibly fix that would be awesome. My username on Head-fi is the same as here if you would rather contact me there. I would obviously pay the return shipping. I'll send along some nucleotide RCA interconnects for whomever fixes it to keep. I just need my amp to work!

Thanks

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: Doc B. on April 22, 2015, 11:19:12 AM

Have you done the resistance and voltage checks?

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: cCasperTFG on April 22, 2015, 11:41:15 AM

I'm not going to lie, I don't really know what I'm doing behind a multimeter.

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: fullheadofnothing on April 22, 2015, 11:50:50 AM

The resistance and voltage checks are a crucial step in the construction of any of our kits. This is not a step that you can skip, both in terms of audio performance, and in terms of the safety of your person and property.

If you do not know how to use a multimeter, find out how (there are numerous text and video guides all over the Internet) and perform the checks in the manual. They will most likely reveal where your problem is. DO NOT continue to operate your project until you have verified that it is safe.

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: ZacharyP on April 22, 2015, 12:22:44 PM

Quote from: cCasperTFG on April 22, 2015, 11:41:15 AM

I'm not going to lie, I don't really know what I'm doing behind a multimeter.

Should have said that on Head-Fi yesterday.  Take fullheadofnothing's adadvice.  You really need to perform the resistance and voltage checks.

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: cCasperTFG on April 22, 2015, 03:00:45 PM

Alright, I'll update back when I figure out the issue, if I can find it.

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: Grainger49 on April 23, 2015, 12:29:25 AM

If you are going to start using a meter you might find a friend who has one who will instruct you in the use of a meter.

Title: Re: Crack problem, left signal sounding like a badly blown speaker.
Post by: Loggie on April 23, 2015, 04:07:37 AM

@cCasperTFG,

Do you have a multimeter and if so which one.
Maybe we can help you better if we know what you have (tell you where to put the probes etc).
Even show you pictures how to do it.

Like people mentioned before knowing whats going on in your Crack is crucial.

Btw are both LED's glowing?