Brooklynbottle
New member
Fair enough. I'm sure there has to be fault in my soldering somewhere!
1A/1B reading 100v [resolved]
- Thread starter Brooklynbottle
- Start date
Brooklynbottle
New member
Quick clarification. Is there a concern that solder flow from an upper terminal strip position to lower position may cause problems? I figure they occupy the same terminal, but I want to make sure excess flow isn't contributing to my channel imbalance in the EQ circuit.
No, no concerns with that.Brooklynbottle said:
Brooklynbottle
New member
Well I took the C4 board off. Re-soldered the whole thing again, touched up my t strips on the R side. Checked voltage, fired it up and same diminished signal on the R.
Took the C4 board off again l, touched up the pad and wanted to share the current situation before I put everything back together for another test. Perhaps there's something I missed?
Took the C4 board off again l, touched up the pad and wanted to share the current situation before I put everything back together for another test. Perhaps there's something I missed?
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I'd be a little suspicious of either lead free solder or a bit of a cool iron on that one.
Brooklynbottle
New member
Reflowed C4s board. Touched up the t strips. Re-assembled, checked resistance and voltage. Everything in spec. I also checked continuity of all the wiring to the board which was also normal.
Plugged the Eros in and I'm closer. I've got a 7-10dB deficit in the R channel based on my crude sound meter app. This is an "improvement" from the 20dB difference as measured by the same phone/app.
I'm apprehensive about burning up my board at this point.
I'm planning on leaving the Eros powered up for a while in hopes I can get things evened up.
I hate to admit defeat, but I think fully correcting this imbalance may be beyond my capabilities.
Plugged the Eros in and I'm closer. I've got a 7-10dB deficit in the R channel based on my crude sound meter app. This is an "improvement" from the 20dB difference as measured by the same phone/app.
I'm apprehensive about burning up my board at this point.
I'm planning on leaving the Eros powered up for a while in hopes I can get things evened up.
I hate to admit defeat, but I think fully correcting this imbalance may be beyond my capabilities.
Brooklynbottle
New member
Update on an update. Soaked the Eros for 24 hours.
I used the averaging function on my sound level meter and we're at a 4dB deficit on the R channel.
I haven't re-touched the front, A/B board. Is that a potential source for imbalance?
BTW using standard Kester solder w/ the iron at max.
I used the averaging function on my sound level meter and we're at a 4dB deficit on the R channel.
I haven't re-touched the front, A/B board. Is that a potential source for imbalance?
BTW using standard Kester solder w/ the iron at max.
Paul Joppa
Moderator
Normally there is a large variation to acoustic measurements, due to room acoustics. So I have to ask, how exactly are you measuring this 4dB difference?
Brooklynbottle
New member
Fair question. Just trying to quantify what my ears tell me when listening.
I'm just using my phone app while capturing a dB average reading at approximately 12" from the face of the speaker.
I know it's far from precise, but I was hoping the information would aid in the diagnostic process.
I'm just using my phone app while capturing a dB average reading at approximately 12" from the face of the speaker.
I know it's far from precise, but I was hoping the information would aid in the diagnostic process.
Brooklynbottle
New member
Final dispatch. My Eros is functioning as intended! Channels are balanced (as confirmed by my crude app based sound metering) My vinyl has never sounded better. I can only postulate that I just needed to sit down and spend an evening using the Eros for everything to even up. Thank you for the support and urging to double check my work. Consider the case "resolved".
What ended up being the solution?
Brooklynbottle
New member
It must've been a combination of a maxed out iron reflowing my work and soaking/using the Eros? I wish I had a definitive "smoking gun". So it goes with amateur assembling.
