Introduction and Help...

Maxi11235 · 21st May 2009, 05:37 AM

Hi all,

I'm a newbie to this site and to electronics. I've just completed my first project - a headphone amp with regulated power supply. It sounds great and cost well under $100. Yee haa!

Some guys might say I have all the gear but no idea and they're probably not far off, but I'm keen to learn. Please bear with me if I make some faux pas or ask dumb questions and if I sound argumentative at all, I'm just trying to get to the bottom of something.

I love music, hence my love for building speakers and subsequent interest in electronics!

I recently acquired a Rotel RB1080 (Monster) Power amp that is not working. Nothing smells or looks burnt and it powers up fine, but when I try to play something thru it, one channel is silent and the other one makes strange pops and clicking noises instead of music.

I don't know how to test components but I do have a meter (and a desire to learn!) Any advice would be greatly appreciated.

Thanks,
Marco.

taj · 21st May 2009, 05:49 AM

While I can't really help troubleshoot and diagnose, I will suggest that you not hook the amp up to any decent speakers until you know it's working properly. Any DC offset on the amp's output will burn out your speaker's voice coil(s).

..Todd

planet10 · 21st May 2009, 06:03 AM

Welcome to the forum Marco.

Post your Rotel question over on the solid state forum.

dave

Maxi11235 · 21st May 2009, 07:07 AM

Thanks Todd for my first lesson - don't use decent speakers to test.

In this case, I did. I used my (much loved) Vifa twin woofer towers!

Thankfully, I've used them again since and theres been no damage

- whew!

Maxi11235 · 22nd May 2009, 03:13 PM

Thanks Dave,

I've posted this on the Solid State forum as well but haven't had any replies yet. Hopefully I do soon.

Thanks for the advice!
Marco

Maxi11235 · 22nd May 2009, 04:40 PM

Hi all, I've found a Technical manual for the 1080 now. If you need a copy mail me.

21st May 2009, 05:37 AM	#1
Maxi11235 diyAudio Member Join Date: May 2009	Introduction and Help... Hi all, I'm a newbie to this site and to electronics. I've just completed my first project - a headphone amp with regulated power supply. It sounds great and cost well under $100. Yee haa! Some guys might say I have all the gear but no idea and they're probably not far off, but I'm keen to learn. Please bear with me if I make some faux pas or ask dumb questions and if I sound argumentative at all, I'm just trying to get to the bottom of something. I love music, hence my love for building speakers and subsequent interest in electronics! I recently acquired a Rotel RB1080 (Monster) Power amp that is not working. Nothing smells or looks burnt and it powers up fine, but when I try to play something thru it, one channel is silent and the other one makes strange pops and clicking noises instead of music. I don't know how to test components but I do have a meter (and a desire to learn!) Any advice would be greatly appreciated. Thanks, Marco.

21st May 2009, 06:03 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Welcome to the forum Marco. Post your Rotel question over on the solid state forum. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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21st May 2009, 05:49 AM	#2
taj diyAudio Member Join Date: Feb 2005	While I can't really help troubleshoot and diagnose, I will suggest that you not hook the amp up to any decent speakers until you know it's working properly. Any DC offset on the amp's output will burn out your speaker's voice coil(s). ..Todd

21st May 2009, 07:07 AM	#4
Maxi11235 diyAudio Member Join Date: May 2009	Thanks Todd for my first lesson - don't use decent speakers to test. In this case, I did. I used my (much loved) Vifa twin woofer towers! Thankfully, I've used them again since and theres been no damage - whew!

22nd May 2009, 03:13 PM	#5
Maxi11235 diyAudio Member Join Date: May 2009	Thanks Dave, I've posted this on the Solid State forum as well but haven't had any replies yet. Hopefully I do soon. Thanks for the advice! Marco

22nd May 2009, 04:40 PM	#6
Maxi11235 diyAudio Member Join Date: May 2009	Hi all, I've found a Technical manual for the 1080 now. If you need a copy mail me.

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