Pass "DeLite" Amp from BAF - Page 11

Tea-Bag · 29th October 2009, 03:58 PM

DeLite on chalk board was running at 50 volts, assuming that may mix things up a bit.

Variac · 29th October 2009, 06:43 PM

Quote:

Originally Posted by Nelson Pass

I seem to recall from previous efforts getting about 20 ohms
from my bulbs when run at 30V or so.

Nelson, I know you are still working things out, but are the bulbs you used 150w? And likely to stay being 150w? That's what I remember, but if it is confirmed, then at least everyone can obsess over getting the bulbs while you get some breathing room on the design

flg · 29th October 2009, 07:18 PM

Quote:

Originally Posted by Nelson Pass

You often will find an interesting point around 1 KHz where
the bulb will sing a bit.
Charming.

What is that, 2nd harmonic? Mechanical resonance? Or an inductance from the coiled up filament?
Sounds like a tube thing actually

Rodeodave · 29th October 2009, 07:57 PM

Yap, they do ring. I noticed that with my Zen-lite amp. I think it's the AC-current through the filament changing it's temperature/length. I first thought I was tripping but it kind of makes sense...
Concerning bulbs and their resistance...maybe it's time to reread the Zenlite article.

http://www.passdiy.com/pdf/zenlite.pdf

(btw, I sourced my bulbs when I was on holidays in Mexico, 300W 115V, plus sockets. Luckily still have four in spare...)

scott wurcer · 29th October 2009, 08:14 PM

I missed this one, it covers a lot of questions. I see Mr. Pass is also a Roger Corman fan, I've seen nearly all of them and once did a retrospective of both the Poe cycle and the early sci-fi in separate summers around 1970.

Nelson Pass · 29th October 2009, 08:58 PM

A few years ago, as a Christmas present, my wife arranged
for me to lunch with Roger Corman. He is really an amazing
guy.

Steve Dunlap · 29th October 2009, 09:23 PM

I think I have seen most of the Roger Corman films also. I worked in the local movie theater in high school so I could get in for free. I loved the cheap SiFi movies. I still do. Do you remember who played the patient in the dentist office in Little Shop Of Horrors?

scott wurcer · 01:06 AM

Wilbur Force, Jack N. no peeking required. You know your hooked when you start doing the Dick Miller sightings.

Nelson Pass · 30th October 2009, 01:14 AM

Aaaahhh... "Bucket of Blood", the big Dick Miller vehicle.

Last seen in "The Twilight Zone Movie"?

Steve Dunlap · 30th October 2009, 03:47 PM

Last seen here.

Trail of the Screaming Forehead (2007)

29th October 2009, 03:58 PM	#101
Tea-Bag not politcally affiliated diyAudio Member Join Date: Feb 2006 Location: Kennebunk Blog Entries: 5	DeLite on chalk board was running at 50 volts, assuming that may mix things up a bit. __________________ DCB1/BiB Sign up Sheet Round #2 2012 CLICK HERE\|SSHV2 Shipping\| F5TConvertible Circuit Board Sign Up Sheet (Shipping)CLICK HERE\|Semisouth R100A/R085 available PM

29th October 2009, 07:57 PM	#104
Rodeodave diyAudio Member Join Date: Dec 2004 Location: in the alps Blog Entries: 1	Yap, they do ring. I noticed that with my Zen-lite amp. I think it's the AC-current through the filament changing it's temperature/length. I first thought I was tripping but it kind of makes sense... Concerning bulbs and their resistance...maybe it's time to reread the Zenlite article. http://www.passdiy.com/pdf/zenlite.pdf (btw, I sourced my bulbs when I was on holidays in Mexico, 300W 115V, plus sockets. Luckily still have four in spare...) __________________ Gravity - Making the G since 13.7 billion B.C.

29th October 2009, 08:14 PM	#105
scott wurcer diyAudio Member Join Date: Jan 2004 Location: cambridge ma	I missed this one, it covers a lot of questions. I see Mr. Pass is also a Roger Corman fan, I've seen nearly all of them and once did a retrospective of both the Poe cycle and the early sci-fi in separate summers around 1970. __________________ 2012, our time is running out.

30th October 2009, 01:02 AM	#108
scott wurcer diyAudio Member Join Date: Jan 2004 Location: cambridge ma	Wilbur Force, Jack N. no peeking required. You know your hooked when you start doing the Dick Miller sightings. __________________ 2012, our time is running out. Last edited by scott wurcer; 30th October 2009 at 01:06 AM.

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29th October 2009, 08:58 PM	#106
Nelson Pass The one and only Join Date: Mar 2001	A few years ago, as a Christmas present, my wife arranged for me to lunch with Roger Corman. He is really an amazing guy.

29th October 2009, 09:23 PM	#107
Steve Dunlap diyAudio Member Join Date: Sep 2008 Location: Here	I think I have seen most of the Roger Corman films also. I worked in the local movie theater in high school so I could get in for free. I loved the cheap SiFi movies. I still do. Do you remember who played the patient in the dentist office in Little Shop Of Horrors?

30th October 2009, 01:14 AM	#109
Nelson Pass The one and only Join Date: Mar 2001	Aaaahhh... "Bucket of Blood", the big Dick Miller vehicle. Last seen in "The Twilight Zone Movie"?

30th October 2009, 03:47 PM	#110
Steve Dunlap diyAudio Member Join Date: Sep 2008 Location: Here	Last seen here. Trail of the Screaming Forehead (2007)

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