Night dreaming? / Middle of the night bloom

Gabevee · 6th May 2003, 05:40 PM

Any thoughts, theories, opinions?

For those who don't know what I mean, it is a phenomenon that occurs when listening to our systems at night, from about 11:00 PM to 5:00 or 6:00 AM, where everything seems to sound much better and wider and deeper, etc.

Gabe

Michael Rothacher · 6th May 2003, 06:26 PM

I've always felt it was primarily the result of these effects:

1. Far less power line noise at these hours
2. Far less ambient noise at these hours.
3. Our auditory acuity peaks at night, and arguably more so in the critical midrange.

Mike

Da5id4Vz · 6th May 2003, 06:35 PM

Its probably worth considering the effects of cooler and denser air.

Physiologically, the effect of the mornings caffeine may also be at a minimum.

Michael Rothacher · 6th May 2003, 07:38 PM

Ah yes. The "Starbuck's Effect."

How about the effect of the Moon's gravity on speaker cones?

Sch3mat1c · 6th May 2003, 10:39 PM

Man, I notice this too. It's weird isn't it?
Like...I'm listening right now and it doesn't sound all that great. But last night it sounded good, wtf?...

Maybe it could be the sleepiness acting like alcohol...people always say it comes alive with a shot or two of Bourbon or what-have-you

Tim

Equilibrium · 6th May 2003, 10:51 PM

THE MAGIC HOUR by Steve Deckert

An examination of the mystery of the middle of the night bloom!

Da5id4Vz · 6th May 2003, 11:26 PM

Steve Deckert's article is interesting, but I have to wonder about the microphonics caused by the tube amp on top of the subwoofer.

I am also starting to wonder about the length of widow for the sweat spot for the effect.

I don’t know about the rest of you, but after about 3 hours of serious listening, regardless of the quality of the source material.
my hearings pretty shot.

Gabevee · 6th May 2003, 11:31 PM

Yes, I also read Steve's article a few years back (if you notice, he posted my reply to him about it

).

I just wanted to see what the opinions were here about it.

Gabe

fdegrove · 7th May 2003, 12:28 AM

Hi,

It will be a different experience depending on where you live but...yes, AC quality is a major factor.

I feel tubes are less prone to this kind of disturbance thanks to choke filtered supplies and...bear with me...stiff PSU designs with very high PSRR.

If you want look at the PSU I designed for a preamp, it provides very high isolation from the mains and sounds all the better for it.
Mind you, that was not the only target.

When I see the often poor, meagre PSU offered by some members here I often think: they'll never hear their circuits' potential at its best and they have no clue about PSU isolation from the mains...

On some occasions batteries are close to the ideal but a well designed PSU should come close.

Nonetheless, I still enjoy better sound way passed midnight...nothing's ever perfect?

Cheers,

Sch3mat1c · 7th May 2003, 01:28 AM

'Nother one of those ironies...people push tube rect's yet say PSUs need good regulation... oh well

Tim

6th May 2003, 05:40 PM	#1
Gabevee diyAudio Member Join Date: Feb 2002 Location: Richmond, VA.	Middle of the night bloom Any thoughts, theories, opinions? For those who don't know what I mean, it is a phenomenon that occurs when listening to our systems at night, from about 11:00 PM to 5:00 or 6:00 AM, where everything seems to sound much better and wider and deeper, etc. Gabe __________________ Gabe CGV Electronics Home of the CGV-300B amplifier on a budget

6th May 2003, 10:39 PM	#5
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	Man, I notice this too. It's weird isn't it? Like...I'm listening right now and it doesn't sound all that great. But last night it sounded good, wtf?... Maybe it could be the sleepiness acting like alcohol...people always say it comes alive with a shot or two of Bourbon or what-have-you Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

6th May 2003, 10:51 PM	#6
Equilibrium diyAudio Member Join Date: Oct 2002 Location: Mad Dog, Texas	THE MAGIC HOUR by Steve Deckert An examination of the mystery of the middle of the night bloom! __________________ If we could just get everyone to close his or her eyes and visualize world peace for an hour, imagine how serene and quiet it would be until the looting started.

6th May 2003, 11:31 PM	#8
Gabevee diyAudio Member Join Date: Feb 2002 Location: Richmond, VA.	Yes, I also read Steve's article a few years back (if you notice, he posted my reply to him about it ). I just wanted to see what the opinions were here about it. Gabe __________________ Gabe CGV Electronics Home of the CGV-300B amplifier on a budget

7th May 2003, 12:28 AM	#9
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	THEM WEE HOURS... Hi, It will be a different experience depending on where you live but...yes, AC quality is a major factor. I feel tubes are less prone to this kind of disturbance thanks to choke filtered supplies and...bear with me...stiff PSU designs with very high PSRR. If you want look at the PSU I designed for a preamp, it provides very high isolation from the mains and sounds all the better for it. Mind you, that was not the only target. When I see the often poor, meagre PSU offered by some members here I often think: they'll never hear their circuits' potential at its best and they have no clue about PSU isolation from the mains... On some occasions batteries are close to the ideal but a well designed PSU should come close. Nonetheless, I still enjoy better sound way passed midnight...nothing's ever perfect? Cheers, __________________ Frank

6th May 2003, 06:26 PM	#2
Michael Rothacher diyAudio Member Join Date: May 2001 Location: Ohio Blog Entries: 3	I've always felt it was primarily the result of these effects: 1. Far less power line noise at these hours 2. Far less ambient noise at these hours. 3. Our auditory acuity peaks at night, and arguably more so in the critical midrange. Mike

6th May 2003, 06:35 PM	#3
Da5id4Vz diyAudio Member Join Date: Feb 2003 Location: lost in america...	Its probably worth considering the effects of cooler and denser air. Physiologically, the effect of the mornings caffeine may also be at a minimum.

6th May 2003, 07:38 PM	#4
Michael Rothacher diyAudio Member Join Date: May 2001 Location: Ohio Blog Entries: 3	Ah yes. The "Starbuck's Effect." How about the effect of the Moon's gravity on speaker cones?

6th May 2003, 11:26 PM	#7
Da5id4Vz diyAudio Member Join Date: Feb 2003 Location: lost in america...	Steve Deckert's article is interesting, but I have to wonder about the microphonics caused by the tube amp on top of the subwoofer. I am also starting to wonder about the length of widow for the sweat spot for the effect. I don’t know about the rest of you, but after about 3 hours of serious listening, regardless of the quality of the source material. my hearings pretty shot.

7th May 2003, 01:28 AM	#10
Sch3mat1c diyAudio Member Join Date: Jan 2003 Location: Milwaukee, WI	'Nother one of those ironies...people push tube rect's yet say PSUs need good regulation... oh well Tim __________________ See my Electronics webpage -- the home of Vacuum Tube Drag Racing. The key to being a successful Audiophile: "I reject your reality and substitute my own!"

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

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
Things that go bump in the night...	Fuling	Multi-Way	54	26th January 2011 02:08 PM
blue led at night	wuffwaff	Everything Else	34	17th September 2009 09:16 PM
Just sharing my 26 experience last night...	arnoldc	Tubes / Valves	22	18th July 2007 02:15 PM
Got my 6BG6GA's last night	Original Burnedfingers	Tubes / Valves	10	6th November 2006 12:42 AM
New Aleph P1.7 finished last night	bbakota2000	Pass Labs	16	21st January 2006 07:27 PM

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