GB: New run Lynx 3.01 amp by Jan Dupont - Page 3

Tarasque · 8th August 2010, 12:33 PM

Quote:

Originally Posted by a.wayne

Hello,

Is this the amplifier you are doing a group buy for ?

http://audio-circuit.dk/images/LYNX-v3-0-QAG.pdf

Yes...That is the one

Tarasque · 12th August 2010, 01:01 PM

All PCB's are shipped. Pls let me know when you receive them.

Tarasque · 12th August 2010, 01:04 PM

Sakis...I still have 4 boards reserved for you. Pls confirm if you still want them.

aypo · 13th August 2010, 02:33 PM

boards received today, perfect job.

sakis · 15th August 2010, 10:36 AM

sorry guys ...i ve been way to bussy to follow the thread ...please refresh me up

yes i would like four boards ... i dont have pay pal account but i will be more than happy to pay through western union or direct bank deposit .... please email me with total cost of boards +PP+payment method / details

thank you

Tarasque · 15th August 2010, 09:08 PM

Message sent

Tarasque · 17th August 2010, 10:08 AM

There are 2 PCB's left for sale. Any takers?

AndrewT · 17th August 2010, 11:00 AM

Hi,
what are the differences between V3.0 (post20) and V3.01?

AndrewT · 11:19 AM

Can I suggest an improved wiring arrangement for section9 of the pdf?
The two AC and centre tap be a twisted triplet to the rectifier.
The +ve,-ve and centre tap be a twisted triplet from rectifier to the smoothing capacitor bank.
The Chassis connection can as shown be from the centre of the smoothing caps.
The mains DC supplies +ve, -ve and Power Ground be taken as a twisted triplet to the amplifier Power input end.
Part way along this twisted triplet add a tapping point to the Power Ground.
Use this new point as the Main Audio Ground (Star Ground).
Take the RCA return to Audio Ground.
Take the Signal Ground and signal as a twisted pair to the RCA Hot and to the RCA Return.
Take the Speaker Return and the Signal hot/out as a twisted pair to the Audio Ground. Connect the Signal hot/out to the PCB and keep the Speaker Return continuous on it's route to the Main Audio Ground.

This arrangement removes the charging pulses and all the HF harmonics flowing between transformer and smoothing caps into a separated circuit that cannot adversely influence the circuits connected to the Main Audio Ground. This separation of Audio from Charging is important.

Tarasque · 20th August 2010, 09:32 AM

The last PCB's are shipped today.

13th August 2010, 02:33 PM	#24
aypo diyAudio Member Join Date: Apr 2009	boards received today, perfect job. __________________ Bowers & Wilkins 685, Nad C325BEE

15th August 2010, 10:36 AM	#25
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	sorry guys ...i ve been way to bussy to follow the thread ...please refresh me up yes i would like four boards ... i dont have pay pal account but i will be more than happy to pay through western union or direct bank deposit .... please email me with total cost of boards +PP+payment method / details thank you __________________ SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

17th August 2010, 11:16 AM	#29
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Can I suggest an improved wiring arrangement for section9 of the pdf? The two AC and centre tap be a twisted triplet to the rectifier. The +ve,-ve and centre tap be a twisted triplet from rectifier to the smoothing capacitor bank. The Chassis connection can as shown be from the centre of the smoothing caps. The mains DC supplies +ve, -ve and Power Ground be taken as a twisted triplet to the amplifier Power input end. Part way along this twisted triplet add a tapping point to the Power Ground. Use this new point as the Main Audio Ground (Star Ground). Take the RCA return to Audio Ground. Take the Signal Ground and signal as a twisted pair to the RCA Hot and to the RCA Return. Take the Speaker Return and the Signal hot/out as a twisted pair to the Audio Ground. Connect the Signal hot/out to the PCB and keep the Speaker Return continuous on it's route to the Main Audio Ground. This arrangement removes the charging pulses and all the HF harmonics flowing between transformer and smoothing caps into a separated circuit that cannot adversely influence the circuits connected to the Main Audio Ground. This separation of Audio from Charging is important. Last edited by AndrewT; 17th August 2010 at 11:19 AM.

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
Power Amp PSU Board (for e.g. LYNX Amp)	Jan Dupont	Group Buys	462	4th September 2009 12:31 PM
DELTA PA-34A Power Amplifier by Jan Dupont	MEGA-amp	Solid State	8	21st January 2005 06:30 PM
LYNX amp problems...Help	JojoD818	Solid State	209	18th November 2003 01:10 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

12th August 2010, 01:01 PM	#22
Tarasque diyAudio Member Join Date: Dec 2002 Location: Netherlands	All PCB's are shipped. Pls let me know when you receive them.

12th August 2010, 01:04 PM	#23
Tarasque diyAudio Member Join Date: Dec 2002 Location: Netherlands	Sakis...I still have 4 boards reserved for you. Pls confirm if you still want them.

15th August 2010, 09:08 PM	#26
Tarasque diyAudio Member Join Date: Dec 2002 Location: Netherlands	Message sent

17th August 2010, 10:08 AM	#27
Tarasque diyAudio Member Join Date: Dec 2002 Location: Netherlands	There are 2 PCB's left for sale. Any takers?

17th August 2010, 11:00 AM	#28
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, what are the differences between V3.0 (post20) and V3.01?

20th August 2010, 09:32 AM	#30
Tarasque diyAudio Member Join Date: Dec 2002 Location: Netherlands	The last PCB's are shipped today.

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