Lou Dorren: A new CD-4 Demodulator!!! [ARCHIVE]

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Well, it sure looks like a good time for us Canadians to buy a new demodulator.
The Loonie just crept back over the US dollar again. Who do I send my payment to?
I don't know what you guys are going to do with those Euros though. :rolleyes:
 
loudorren said:
Come One, Come All CD-4 Quadraphers alike,

Feast your eyes on the pre-production CD-4 demodulator that will soon ship to Jon. The printing on this unit was done with a Brother label maker. The finished unit will be silk screened epoxy paint.

Lou Dorren
Click to expand...

Excellent work Lou, you're our hero. I hope your health is good shape now, too. Congrats.
 
Just thought I would "bump" the thread and see whether there is an update?

Any news ?

The early production models (pre-prod) should be in testing by now?

We are starved for news out here in the wilderness.....

bye for now

David
 
It was just over one year ago that it was announced the prototype was momentarily shipping to Jon Urban for testing. Perhaps the US mail is slow?
 
Quote "It was just over one year ago that it was announced the prototype was momentarily shipping to Jon Urban for testing. Perhaps the US mail is slow? "



well it's just over 2 years since he gave any buyer any feedback on ebay.....and I think that's a lot easier to do than posting a prototype box

and what year did this thread start? 2007


ahh 12 months is nothing...
 
Last edited:
OK, so what's going on here? Last I heard the prototype demodulator was being shipped to Jon. That was back in November of 2011. Was it shipped? Did it arrive? Has Jon evaluated it? Was there something wrong with it? And all there is on the thread is talk of coin op kiddie cars. It's almost April. What's up? At least my faithful 4DD5 is performing well, I am beginning to suspect I will continue to need it for the rest of my days.

The Quadfather
 
I got the "final confirmation" PM from Theresa quite some time ago. I asked a few questions about payment and price at present time, I got no reply, so I asked on the pre-order thread, and got an answer, see
https://www.quadraphonicquad.com/fo...Pre-Order-List&p=138487&highlight=#post138487 post #283.
I just think I will wait and see what will happen.
In the mean time I guess the 4DD-5 will do. I also think that maybe i do not need a new decoder for the relatively few disks I have. Some of the interresting old disk are re-issued as "Immersion boxes" with 5.1 and old 4.0 mixes. I can buy a few of those if I really want to.
Further, with a good 4DD-5 and e.g. one of the E-MU external USB ADC/DACs I can make good enough (for rock'n'roll) DVD-As or FLAC files from the CD-4 LPs to playback on both 5.1 and 4.0 systems.
No doubt the digitized versions from the new Dorred demodulator will be better, and also the plain playback, but it is not here yet, so best to take a wait-and-see approach.

Rolv-Karsten
 
I still do not have the evaluation unit, but the last time Lou called, he told me that it was going to ship in a few weeks. Don't forget that this is something Lou is doing as a side project, and he has many real world things to deal with first.
 
Yes, JonUrban, we know, and we all appreciate the work Lou have done.
I am waiting. But it now seems that that "final confirmation" came a little premature?
I really hope Lou will have time to finish it, and that it will surface as a real demodulator sooner or later.
 
We still need to know, and I am hoping, that this new model will be significantly better than the vintage demodulators populating ebay. Its great to promise to do something, and everyone appreciates this is something of a side project, but as years go by and we're still waiting, it begins to look like a big tease, no matter how well intentioned this was. The economy has worsened, one member here has passed on while waiting for this new demodulater, and none of us are getting any younger. The pool of potential buyers for this project is shrinking. Who knows how long Grado will keep its deal open to manufacture shibata styluses for Lou?
 
Grado should be the supplier of the cartridges. The Shibata retipping should be done in Germany by one of the meanwhile rare specialists. I have arranged that as middle-man in December 2010! Retipped have been 2 of the Grados. Lou was very enthusiatic about the very well quality. I guess, that around 150 items of the demodulator are pre-orderd. Each Demodulator should have additional such a cartidge. Some would like some further cartridges extra. So it may have 200-250 cartridges for a retipping. My known specialist needs for 50 cartridges around 6 weeks - including mailing 8-10 weeks. That means for 150 cartridges a time for retipping 30 weeks, for 250 a year. I am further on prepared to help by this retipping deal. But I have not heard meanwhile something about that retipping activity. That is all, what I know about the situation of the demodulator or retipping of the Grados. May be, Lou will tell news and may be he has menwhile other surces for a retipping with the shibata stylus.

Dietrich
 
Quadro-Action said:
Grado should be the supplier of the cartridges. The Shibata retipping should be done in Germany by one of the meanwhile rare specialists. I have arranged that as middle-man in December 2010! Retipped have been 2 of the Grados. Lou was very enthusiatic about the very well quality. I guess, that around 150 items of the demodulator are pre-orderd. Each Demodulator should have additional such a cartidge. Some would like some further cartridges extra. So it may have 200-250 cartridges for a retipping. My known specialist needs for 50 cartridges around 6 weeks - including mailing 8-10 weeks. That means for 150 cartridges a time for retipping 30 weeks, for 250 a year. I am further on prepared to help by this retipping deal. But I have not heard meanwhile something about that retipping activity. That is all, what I know about the situation of the demodulator or retipping of the Grados. May be, Lou will tell news and may be he has menwhile other surces for a retipping with the shibata stylus.

Dietrich
Click to expand...

Hi Dietrich, would that be Axel at Schallpplatnadeln doing the retipping?

thanks

David
 
Hello David,
the retipping man in Germany is Martin Göttmann. He has worked earlier in the firm Dreher & Kauf as specialist for retipping. After the firm has closed this activitie, his has taken over the machines and works now self for the retipping of all sorts of stylusses and plug ins. I think, this possibilities are actual very rare in the world. He works for analog fans and their cartridges and stylusses also outside Germany. So he has done the experiment retipping of the 2 Grados for Lou. But I think, he has not got the order from Lou for some more retippings, which would be needed for the items as supplement for each demodulator. By some askes in the past I have not heard from that. And it is embarassing for me, to ask further on.
The address is www.der nadelspezialist.de.

Dietrich

Dietrich
.
 
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