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Old 18th January 2004, 04:12 PM   #1
mcs is offline mcs  Denmark
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Default Remote passive preamp kit

Some time ago I built a "passive preamp" for my own use. You can read more about it here: http://stiftsbogtrykkeriet.dk/~mcs/Remote3/index.html

A couple of people have asked me if kits were available, which they aren't currently. But I just wanted to find out if there is any interest?

I could probably sell PCBs at $25-30 each. A complete kit with box costs about $160 at low-quantity list prices in Denmark, but I could probably get the cost down to $130 if I buy parts for more than one kit at a time...

The pictures on the link above are not the latest version BTW. I fixed a couple of things in the PCB layout after assembling the first PCB

The board also includes two wire links that can be removed if you want to make the preamp active.

Best regards,

Mikkel C. Simonsen
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Old 18th January 2004, 05:20 PM   #2
Cobra2 is offline Cobra2  Norway
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I would be interested, -my plan is to retrofit this control to older pre-amps...

Arne K
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Old 18th January 2004, 10:25 PM   #3
mcs is offline mcs  Denmark
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Quote:
Originally posted by Cobra2
-my plan is to retrofit this control to older pre-amps...
In that case this PCB layout may be better: http://stiftsbogtrykkeriet.dk/~mcs/Remote4_pcb.gif

It's the same circuit, just on a PCB split into two pieces. The complete PCB is still 160*100mm, but with a seperate 103*44mm frontpanel cut-out in the corner. The original PCB layout was made for the box, and it's not very practical in a different sized box.

Best regards,

Mikkel C. Simonsen
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Old 18th January 2004, 10:42 PM   #4
Cobra2 is offline Cobra2  Norway
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A split PCB is a good idea, but not important to have a Vol-pot soldered directly on PCB, or buttons...as these things may differ a lot on existing designs.

Arne K
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Old 18th January 2004, 11:00 PM   #5
mcs is offline mcs  Denmark
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If you want to connect the buttons using wires, then the PCB layout doesn't matter a lot. But I'm too lazy for that - I like having everything on the PCB...

But the PCB layout you can see on the photo does include two rows of pads where you can solder in headers for connecting LEDs and buttons.

Best regards,

Mikkel C. Simonsen
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Old 5th February 2004, 02:28 AM   #6
mcs is offline mcs  Denmark
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I will be ordering PCBs soon - anybody else interested?

Best regards,

Mikkel C. Simonsen
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Old 5th February 2004, 05:10 AM   #7
sma is offline sma  Indonesia
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Hi Mcs ,i e-mail you about pcb...
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Old 5th February 2004, 07:49 PM   #8
Nisbeth is offline Nisbeth  Denmark
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Mikkel, you've got mail!


/U.
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Old 6th February 2004, 12:36 AM   #9
Praise! is offline Praise!  Australia
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Default I'm interested

Quote:
Originally posted by mcs
I will be ordering PCBs soon - anybody else interested?

Best regards,

Mikkel C. Simonsen

Hi Mikkel,

Good work. It so happened that I need a passive preamp to test my power amp. So, I can tell you, if your price is right, I'm interested.
Some questions: What sort of relays do you use? gold plated? (Yes, I want gold plated ones) Are your phono connectors gold plated as well? (I couldn't see clearly)

If I do decide to buy your passive preamp kit, then I will want your full kit from everything to everything including case and knobs. (Your case work look great )

Please give me a quote on the full kit

What resistance is your volume pot?

James
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Old 6th February 2004, 12:45 AM   #10
Praise! is offline Praise!  Australia
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Default A suggestion

Hi Mikkel,

I read your website again: Perhaps it is cheaper if I source the parts locally and just buy the case and pcb from you. So, please give me a separate quote as well. Please inculde shipping charges.

A suggestion: If there are many people buying your kit, you can go to the parts sales office to get factory prices. In general, the prices are one-tenth of the RS/Farnell prices.

James
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