[[silent:arts]]

resources:

PM660 Block Diagram
PM660 schematic

PM660 Component Placement and Dimensions
PSU660 Component Placement and Dimensions
note: use IRF840 in both places (Q4 & Q5)
wiring guide

PM660 Parts List (this is for one channel)
PSU660 Parts List

Heater PSU
the SlowStart Heater PSU
+/-17V PSU
the rotary switches
more on the rotary switches by Kingston
how to set the trimmers
Stereo Link
Meters
color coding of bernbrues PSU transformers
5687 Tubes mhm, some people having problems with their 5687 tubes. it is still unclear if it is a specific brand, relabeled other tubes or falsifications. we will keep you informed ...
PSU mods by Pier Paolo Abbate - use at your own risk!


NONE OF THIS HAS BEEN ATTEMPTED IN THE FIELD WITH A PM660:
the pimp / mod the Poor Man 660 thread
some great thoughts, mainly by emrr

gear porn: the finished poor men
bernbrue
waldorfcave
dspruill
Gachet
klaus2you
rss
lewilson
inputoutput
idylldon
dagoose
AW_music
skal1
khstudio
SaMpLeGoD
veermaster
noulou
Holger
ChuckD
Silvas
kilmister
loopermc5
horvitz
alexc
radiance
tekno808

[lofi]

1 x 100n WIMA MKS2  C13,C14,C23,C24 ~ should this not be 4?

16 x 1N4007 D1-D8,D9,D11-D18 ~ should this not be 17?

excellent work Sir!!!!!

[[silent:arts]]

Sir, you are absolutely right :thumb:
good to have someone looking over it.

thanks & updated

[lofi]

16 x 1N4007 D1-D8,D9,D11-D18 ~ should this not be 17?

[bernbrue]

:wink:
regards
Bernd

[[silent:arts]]

D7 is wrong. updated again.
thanks for your support, Sir :green:

[lofi]

You guys are the support, this project is a dream come true for me, everything else is on the back boiler till its done!!!

thank you so much

 :green:  :green:  :thumb:  :thumb:

[kazper]

Some possible additional Mouser numbers:

PM PCB
Heat Sink: 567-637-10ABP

10u/25V:    140-HTRL25V10-RC
100u/25 E: 647-UHE1E101MED
1000u/25: 647-UHE1V102MHD (adjusted up to 35V for size)
4700U/16: 647-UHE1C472MHD
47u/300+: 647-UVR2V470MHD
100u/300+: 647-UVR2V101MHD

Heat Sink SK104 :567-647-15ABP
"      " SK129: 567-677-20ABP

Heat Sinks are crossed over from Conrad part # spec sheet.

[Grooveteer]

Great!

Volker, would you have a BOM for the bypass board too?

Cheers!
G

[[silent:arts]]

for the bypass PCB use this:
http://www.groupdiy.com/index.php?topic=26585&start=198
Relay for the Poor Man is 12V

kazper, thanks for the input, will crosscheck and update :thumb:

[jarlehal]

Some possible additional Mouser numbers:

PM PCB
Heat Sink: 567-637-10ABP

10u/25V:    140-HTRL25V10-RC
100u/25 E: 647-UHE1E101MED
1000u/25: 647-UHE1V102MHD (adjusted up to 35V for size)
4700U/16: 647-UHE1C472MHD
47u/300+: 647-UVR2V470MHD
100u/300+: 647-UVR2V101MHD

Heat Sink SK104 :567-647-15ABP
"      " SK129: 567-677-20ABP

Heat Sinks are crossed over from Conrad part # spec sheet.

Possible to use Mouser #: 647-UVY2G221MRD for the two
"200μ/400V Electrolytic, ø 30mm, RM 10mm"?

Mouser part is a Radial Aluminum Electrolytic Capacitors - 105 Degree 400V 220uF 22X50 20%Tol 10LS 105Deg

[osc]

Woow !!!

Very nice, thanks Volker!


:guinness: :guinness: :sam:

[Grooveteer]

I'm thinking of using a rotary switch for time constant control, I have 2 (for PM670) nice 1-12 switches lying around.  Do you guys think 12 pos would be too coarse?

And, if not, just make it linear?  12 even steps to get to 10k?

Cheers,
G

[[silent:arts]]

I will use six steps :green:

[Grooveteer]

"]I will use six steps :green:

   :wink:

First step zero Ohm, 6th step 10k?

[[silent:arts]]

and 5 x 2K resistors between each step ? :green:
(me I will do)
why not.
but we will come to the rotary switches later ...

[wtmnmf]

Any reason to prefer one of these over another?

http://store.tubedepot.com/5687.html

Are any of these tests worth paying for?

#   Standard Test Included – All tubes from TubeDepot.com are tested and guaranteed to work as they should. There is no fee for this test.
# Hi-Gain (+$2.00) – If you want a preamp tube with higher gain, you can choose this option. There is a $2 per tube fee for this test.
# Matching (+$2.00) – If you want matched pairs of preamp tubes, choose this option. You must buy at least 2 preamp tubes for us to match preamps tubes. We match to within 3%. There is a $2 per tube fee for this test.
# Balanced Triodes (+$2.00) – If you want the best performance for the Phase Inverter section of your amplifier, you can choose this option. There is a $2 per tube fee for this test.
# Matched+Balanced Triodes (+$4.00) – We can match and balance preamps tubes for you as well. You must buy at least 2 preamp tubes for us to match and balance preamps tubes. There is a $4 per tube fee for this test.
# Low Noise and Microphonics (+$4.00) – If you have a phono stage that has to have the quietest preamp tubes available, we can ensure you get the best with this option. There is a $4 per tube fee for this test.

[seavote]

i think low noise  and microphonics would be a good idea. i've used that option in the past. i could swear it was only $2 per tube only last year.

[[silent:arts]]

... This mu compressor is not sensitive to tube mis-match. I did my homework in the cathode circuit to compensate for that ...

[mrclunk]

I've put the Bom into a Google docs spreadsheet. Its shared with the Groupdiy account, so anyone can access/edit.

If u have a google account and want access, just share it with yourself.

This ones based around parts/prices in the UK but could be copyied into another spreadsheet for US prices and part numbers.
I haven't inputed any formula for totals etc, bit of a spreadsheet novice.

Poor Man's 660 Progress Report

Started by analag « 1 2 3 4 » The Lab

How poor can you be and still make the Poor Man's 660?

Started by bodega The Lab

Poor man's 660

Started by Gachet « 1 2 3 » The Lab

the pimp / mod the Poor Man 660 thread

Started by [silent:arts] « 1 2 ... 10 11 » The Lab