LM4780, Attenuator, Mic and preamp

Vikash · 18th October 2006, 03:36 PM

These have been sitting on my worktop for over a year.

LM4780 amp. Needs little introdution. Never used, or tested even. But the PCB is populated and complete.

£35 + P&P.

-----------------------------------------------

Stepped Attenuator - 12 steps

Built with quality Welwyn RC55 resistors.
Resistor Values:
1 - 0
2 - 100.2R
3 - 154.1R
4 - 226.2R
5 - 332R
6 - 464.4R
7 - 681.2R
8 - 1k0R
9 - 1K54R
10 - 2K74R
11 - 5K11R
12 - 12k08R

Used once for testing, but not enough steps for my liking.

£15 + P&P.

-----------------------------------------------

Mic Wand fitted with Panasonic WM-61A electret and phono connector. Wired in reverse (ala Linkwitz mod).

Used condition.

£5 + P&P.

-----------------------------------------------

Prototype preamp PCB
This is the protoype version of the mic preamp sold on madaboutsound.com, as seen here:

Note it does not come withe above enclosure.

In used condition and needs some minor attention as it has no input RCA connector, or battery strap. Would be perfect for someone on a budget.

Output connector is RCA so would fit above mic wand perfectly.

£10 + P&P.

Vikash · 18th October 2006, 06:28 PM

LM4780 and stepped attenuator sold pending payment.

Mic preamp and Mic left.

AndrewT · 18th October 2006, 07:19 PM

Hi V,
you have Email

Vikash · 18th October 2006, 10:41 PM

Mic and preamp sold pending payment.

Vikash · 19th October 2006, 12:14 PM

Everything sold and dispatched. Thanks.

vex0rg · 23rd October 2006, 11:43 AM

Amp and Attenuator arrived safe this morning.

A pleasure and thanks

Gerry

18th October 2006, 03:36 PM	#1
Vikash diyAudio Moderator Emeritus Join Date: May 2003 Location: UK	LM4780, Attenuator, Mic and preamp These have been sitting on my worktop for over a year. LM4780 amp. Needs little introdution. Never used, or tested even. But the PCB is populated and complete. £35 + P&P. ----------------------------------------------- Stepped Attenuator - 12 steps Built with quality Welwyn RC55 resistors. Resistor Values: 1 - 0 2 - 100.2R 3 - 154.1R 4 - 226.2R 5 - 332R 6 - 464.4R 7 - 681.2R 8 - 1k0R 9 - 1K54R 10 - 2K74R 11 - 5K11R 12 - 12k08R Used once for testing, but not enough steps for my liking. £15 + P&P. ----------------------------------------------- Mic Wand fitted with Panasonic WM-61A electret and phono connector. Wired in reverse (ala Linkwitz mod). Used condition. £5 + P&P. ----------------------------------------------- Prototype preamp PCB This is the protoype version of the mic preamp sold on madaboutsound.com, as seen here: Note it does not come withe above enclosure. In used condition and needs some minor attention as it has no input RCA connector, or battery strap. Would be perfect for someone on a budget. Output connector is RCA so would fit above mic wand perfectly. £10 + P&P. __________________ "The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)

18th October 2006, 06:28 PM	#2
Vikash diyAudio Moderator Emeritus Join Date: May 2003 Location: UK	LM4780 and stepped attenuator sold pending payment. Mic preamp and Mic left. __________________ "The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)

18th October 2006, 07:19 PM	#3
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi V, you have Email __________________ regards Andrew T.

18th October 2006, 10:41 PM	#4
Vikash diyAudio Moderator Emeritus Join Date: May 2003 Location: UK	Mic and preamp sold pending payment. __________________ "The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)

19th October 2006, 12:14 PM	#5
Vikash diyAudio Moderator Emeritus Join Date: May 2003 Location: UK	Everything sold and dispatched. Thanks. __________________ "The human mind is so constituted that it colours with its own previous conceptions any new notion that presents itself for acceptance." - J. Wilhelm. (But I still think mine sounds better than yours.)


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23rd October 2006, 11:43 AM	#6
vex0rg diyAudio Member Join Date: Mar 2005 Location: Dublin, Ireland	Amp and Attenuator arrived safe this morning. A pleasure and thanks Gerry

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