Strange problem with Clock

AnthonyAsh · 14th April 2005, 11:09 AM

Hello!

I installed and run now Hoer Wege master clock on my Rotel 991.Everything is ok,resolution is increases.But I have one problem.Looks like I have now too much highs.
I sended email Stephan,he told me running time for clock is around 3-6 days and all will be ok.I put it on replay mode for 4 days,still this problem exists.

Do you have idea why,and how I can fix this problem?May be clock is bad?Or may be I need to find chinch cable to correlate it?

Vidalgo · 29th April 2005, 09:32 AM

Did you have any other mods?
For example, if you replace opamps to higher-speed devices, sometimes it's lead to unstability problem at signal transients. It sounds like "bright" highs.
You need a good scope with low-capacitance probe to check it, and a test disk with square-signal, any reasonable frequency is OK. (Be careful - turn off power amplifier before applying this test!!!). At opamp's outputs, observe waveform around signal transient - if any significal ringings are present, that's is the answer.

AnthonyAsh · 29th April 2005, 09:41 AM

Hi Man! Are you Vidalgo from hi-fi.ru?

.My nick on this forum is Audio Spirit

Actually I found source of problem ,it was not clock at all,but some capacitors in power supply.I fixed it already.Thanks for reply!

Vidalgo · 29th April 2005, 11:21 AM

I use my nick at each accessible network place, just for life simplicity.

I remember your posted story about caps replacement, did it really harsh sound at highs so much?

In my CDP, original HCU04-based clock was replaced with PECL-based clock, and there is good audible improvements. But I say "original", when its schematics is properly tweaked, sound differences (compare to PECL) becomes neglible. The goal is to save original pcb layout, without "glued-on-air" components.

AnthonyAsh · 29th April 2005, 11:28 AM

It is not related to my caps replacement (elna vs. BG).It is another story.I put Audyn Cap 0.1 uF between +- capacitors in main analog supplies.It gives me some effect of "clear voices",but also effect of "high highs volume".Removing this capacitor brings all in place. I actually have right now very optimal sound,I even didn't opened my Rotel for over 2 weeks!

.Funny

14th April 2005, 11:09 AM	#1
AnthonyAsh diyAudio Member Join Date: Feb 2005 Location: Bochum,Germany	Strange problem with Clock Hello! I installed and run now Hoer Wege master clock on my Rotel 991.Everything is ok,resolution is increases.But I have one problem.Looks like I have now too much highs. I sended email Stephan,he told me running time for clock is around 3-6 days and all will be ok.I put it on replay mode for 4 days,still this problem exists. Do you have idea why,and how I can fix this problem?May be clock is bad?Or may be I need to find chinch cable to correlate it? __________________ Sleep of sanity create monsters

29th April 2005, 09:41 AM	#3
AnthonyAsh diyAudio Member Join Date: Feb 2005 Location: Bochum,Germany	Hi Man! Are you Vidalgo from hi-fi.ru? .My nick on this forum is Audio Spirit Actually I found source of problem ,it was not clock at all,but some capacitors in power supply.I fixed it already.Thanks for reply! __________________ Sleep of sanity create monsters

29th April 2005, 11:28 AM	#5
AnthonyAsh diyAudio Member Join Date: Feb 2005 Location: Bochum,Germany	It is not related to my caps replacement (elna vs. BG).It is another story.I put Audyn Cap 0.1 uF between +- capacitors in main analog supplies.It gives me some effect of "clear voices",but also effect of "high highs volume".Removing this capacitor brings all in place. I actually have right now very optimal sound,I even didn't opened my Rotel for over 2 weeks!.Funny __________________ Sleep of sanity create monsters

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
strange hum problem	zeus_threat	Solid State	8	18th December 2007 02:55 PM
strange amp problem!!!	moonchild	Solid State	23	14th January 2006 12:05 PM
Denon 2900 strange clock behaviour	D.A.R.R.Y.L.	Digital Source	9	25th December 2005 11:26 AM
Strange problem with amp	lumanauw	Solid State	10	12th March 2004 12:59 PM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

29th April 2005, 09:32 AM	#2
Vidalgo diyAudio Member Join Date: Jun 2004 Location: Jerusalem	Did you have any other mods? For example, if you replace opamps to higher-speed devices, sometimes it's lead to unstability problem at signal transients. It sounds like "bright" highs. You need a good scope with low-capacitance probe to check it, and a test disk with square-signal, any reasonable frequency is OK. (Be careful - turn off power amplifier before applying this test!!!). At opamp's outputs, observe waveform around signal transient - if any significal ringings are present, that's is the answer.

29th April 2005, 11:21 AM	#4
Vidalgo diyAudio Member Join Date: Jun 2004 Location: Jerusalem	I use my nick at each accessible network place, just for life simplicity. I remember your posted story about caps replacement, did it really harsh sound at highs so much? In my CDP, original HCU04-based clock was replaced with PECL-based clock, and there is good audible improvements. But I say "original", when its schematics is properly tweaked, sound differences (compare to PECL) becomes neglible. The goal is to save original pcb layout, without "glued-on-air" components.

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read