Rossiter Headamp for MC Cartridges

pozo1992 · 18th October 2007, 08:48 AM

Hi gents,

On the web I`ve read about an audioxpres article (issue 9/06)dealing with an "headamp for very low impedance moving coil cartridges" by a guy named Paul L. Rossiter. They say that the design would be similar to the head amp from Marshall Leach (floating supply), but further elaborated.
I would be very thankful if somebody on this forum could supply a copy of this article or at least the schematic. I think it could be a valuable information for all those interested in high quality vinyl music reproduction.

Regards,
Jürgen

hsort · 22nd October 2007, 10:17 AM

Hello Jürgen,

i don't know this rossiter amp, but i know the leach amp. if you search, you will find a lot of articles about with the scematic included

Regards

pozo1992 · 22nd October 2007, 12:29 PM

Thanks for advice, I know the article about the leach headamp very well, a clever design. That`s the reason I am lookin for the schematic of the Rossiter headamp as it is said to be an advancement.
Could it be that nobody of the forum`s US-participants has a subscription of the audioxpress magazine? If the content is that confidential, somebody better tell me.

regards, Jürgen

pozo1992 · 29th October 2007, 12:05 PM

C`mon 170 replies and no clue?

ashok · 30th October 2007, 05:22 AM

It's a 12 page article ! I think you might get slightly better designs now. Are you sure you want to build this ?
Cheers.

pozo1992 · 30th October 2007, 05:39 AM

Thanks a lot for your reply! Well I am not quite shure if I want to built it but if I do not know the schematic how can I decide?
At least I am very interested in the design as it shall be based on the leach headamp which has two nice features:
No problems with DC at the input and a current input.
So after all I would be very pleased if someone could provide the article or the schemaitc.

Regards, Jürgen

ashok · 30th October 2007, 05:50 AM

The article must be copyrighted so I cannot put it up here. I could however send you a copy of the schematic via private email.

hsort · 30th October 2007, 08:06 AM

Hello Ashok,

can you send me this article too. i am very interested.

Thanks and

Regards

asnakeon · 4th February 2008, 06:57 AM

Quote:

Originally posted by ashok
It's a 12 page article ! I think you might get slightly better designs now. Are you sure you want to build this ?
Cheers.

ashok, could you elaborate on this comment, i.e., could you provide a short list of examples?

thx, Alex

cromodora · 4th February 2008, 11:25 AM

Here's another take on the Leach common base design head amp.

PS.
Ashok, can you email the Rossiter design to me too?

18th October 2007, 08:48 AM	#1
pozo1992 diyAudio Member Join Date: Jun 2004 Location: Bavaria	Rossiter Headamp for MC Cartridges Hi gents, On the web I`ve read about an audioxpres article (issue 9/06)dealing with an "headamp for very low impedance moving coil cartridges" by a guy named Paul L. Rossiter. They say that the design would be similar to the head amp from Marshall Leach (floating supply), but further elaborated. I would be very thankful if somebody on this forum could supply a copy of this article or at least the schematic. I think it could be a valuable information for all those interested in high quality vinyl music reproduction. Regards, Jürgen

22nd October 2007, 10:17 AM	#2
hsort diyAudio Member Join Date: Feb 2002 Location: europ,germany	Hello Jürgen, i don't know this rossiter amp, but i know the leach amp. if you search, you will find a lot of articles about with the scematic included Regards __________________ hsort

30th October 2007, 05:22 AM	#5
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	It's a 12 page article ! I think you might get slightly better designs now. Are you sure you want to build this ? Cheers. __________________ AM

30th October 2007, 05:50 AM	#7
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	The article must be copyrighted so I cannot put it up here. I could however send you a copy of the schematic via private email. __________________ AM

30th October 2007, 08:06 AM	#8
hsort diyAudio Member Join Date: Feb 2002 Location: europ,germany	Hello Ashok, can you send me this article too. i am very interested. Thanks and Regards __________________ hsort


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22nd October 2007, 12:29 PM	#3
pozo1992 diyAudio Member Join Date: Jun 2004 Location: Bavaria	Thanks for advice, I know the article about the leach headamp very well, a clever design. That`s the reason I am lookin for the schematic of the Rossiter headamp as it is said to be an advancement. Could it be that nobody of the forum`s US-participants has a subscription of the audioxpress magazine? If the content is that confidential, somebody better tell me. regards, Jürgen

29th October 2007, 12:05 PM	#4
pozo1992 diyAudio Member Join Date: Jun 2004 Location: Bavaria	C`mon 170 replies and no clue?

30th October 2007, 05:39 AM	#6
pozo1992 diyAudio Member Join Date: Jun 2004 Location: Bavaria	Thanks a lot for your reply! Well I am not quite shure if I want to built it but if I do not know the schematic how can I decide? At least I am very interested in the design as it shall be based on the leach headamp which has two nice features: No problems with DC at the input and a current input. So after all I would be very pleased if someone could provide the article or the schemaitc. Regards, Jürgen

4th February 2008, 11:25 AM	#10
cromodora diyAudio Member Join Date: Feb 2005 Location: Singapore	Here's another take on the Leach common base design head amp. PS. Ashok, can you email the Rossiter design to me too?

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