[Jam_Master_J]

Hi, I'm probably ordering some of the stuff I need for my PIMETA on Thursday. Please verify my parts list (Sorry its kind of a mess it was originally from a spreadsheet the rows are in this order; part name, number to purchase, supplier, part number, description, US price, CAN price).

R1 L/R2{5)Digi-Key4.32KXBK-NDRES 4.32K OHM 1/4W 1% METAL FILM0.77
R2 L/R2(5}Digi-Key1.00MXBK-NDRES 1.00M OHM 1/4W 1% METAL FILM0.77
R3 L/R2(5)Digi-Key1.00KXBK-NDRES 1.00K OHM 1/4W 1% METAL FILM0.77
R4 L/R2(5)Digi-Key10.0KXBK-NDRES 10.0K OHM 1/4W 1% METAL FILM0.77
R4 G1Digi-Key4.32KXBK-NDRES 4.32K OHM 1/4W 1% METAL FILM
R5 L/R2(5)Digi-Key3.32KXBK-NDRES 3.32K OHM 1/4W 1% METAL FILM0.77
R6 L/R2(5)Digi-Key1.00MXBK-NDRES 1.00M OHM 1/4W 1% METAL FILM
R8 L/R2(5)Digi-Key49.9XBK-NDRES 49.9 OHM 1/4W 1% METAL FILM0.77
R10 L/R0n/an/an/a
R111(5)Digi-KeyBC220YCT-NDRES 220 OHM METAL FILM .40W 1%1.35
R-LED1(5)Digi-Key2.2KQBK-NDRES 2.2K OHM 1/4W 5% CARBON FILM0.4
R-FET0n/an/an/a
C12Digi-KeyBC20620.22 µF metalized polypropylene capacitor1.21.7
C22Digi-KeyP10275-NDCAP 470UF 25V ELECT FC RADIAL2.36
C32Digi-KeyP10275-NDCAP 470UF 25V ELECT FC RADIAL2.36
C42Tangentn/aWima MKS-2 6.8µF/50V912.15
C6G1Digi-Key399-192410pF NP0 ceramic, 0.1" pitch, radial0.270.37
LED1Digi-KeyL14006Alt. power indicator LED, clear blue, 4.9V, 2-5 mA, 3mm1.892.69
D11Digi-Key1N5822GICTCrowbar diode, 40V 3A, DO-201 package0.831.18
ZNR0n/an/an/a
FET0n/an/an/a
Q10n/an/an/a
Q20n/an/an/a
TLE24261Digi-Key296-1994Texas Instruments TLE2426CLP ("rail splitter")1.31.76
BUF3645Digi-KeyBUF634P-NDBurr-Brown BUF634Ps17.2523.29
OPA L/R1Tangentn/aAD8620AR on adapter1621.5
OPA G1Tangentn/aAD8610AR on adapter1013.5
POT1Digi-KeyP2U4503Volume control, Panasonic 50K horizontal mount (EVJ-C20)2.663.79
KNOB1Digi-Key226-2021-NDDDS - KNOB CLR GLOSS1.00"DIA.250"SHAFT7.19
INPUT (1)1Digi-KeyCP-1414Alt. input jacks (RCA-white)0.711.01
INPUT (2)1Digi-KeyCP-1413Alt. input jacks (RCA-red)0.711.01
OUTPUT1Digi-KeySC1107Alt. output jack (1/4" stereo)1.962.79
SWITCH1Digi-Key360-1155Alt. power switch (mini SPDT toggle)4.25.98
CASE1LansingCN2B50-B504-B404Lansing Micro-pack C23.832.6
SOCKET5Digi-KeyAE7313DIP-8 IC sockets, gold contacts3.85
PCB1Tangentn/aPIMETA PCB7.510.13
1(5)Digi-Key67-1331-NDBlack Bezel for LCD0.85



Do my parts all look ok? Will I have trouble with fitting any of those components into the smallest Lansing Micropack?

 

[MooseyDoom]

I'm not sure the lansing battery end panel comes with battery leads... if not, you'll need to add 1 or 2 leads. (Although you're probably planning to use 1 battery, consider using two. Your opamps will be happier and it'll be able to feed your stacked buffers longer than 1) (don't forget to increase your rled value if u do use 2 batteries

)

Oh speaking of stacked buffers, you need to half R11 because of your stacked left and right buffers. (so 2 x 100 ohms for your left and right, 200 ohms for your ground)

Your front panel may be cramped for space with 2 rca jacks, a headphone jack, a switch, and a volume pot, and an led so plan that carefully. (btw i'm sure u didn't mean to order 2 red rca jacks)

The smallest lansing case is around the size of the serpac cases that the pimeta was meant to be built in, so everything should fit accordingly.

 

[Jam_Master_J]

I would love to use 2 9v batteries but I'm not sure how to fit two batteries into that case.
For R11 could I leave it as is? The guide quoted an entire range and that was the low range. So even without cutting it shouldn't it be good?

I was also thinking about side mounting the RCA jacks, are there any disadvantages to this?

 

[Jam_Master_J]

The ordering begins. One last thing, do I need special battery leads or can I rip them out of any old device that has them?

 

[sanaka]

JMJ - It might be too late but if you want find my thread here called 'Multiloop spreadsheet and humongous PIMETA parts list.' It links to a couple Excel sheets I did just for the purpose of making the parts ordering process a less chaotic phenomemon

As for R11, the 'standard' thing off hand is that it should be 220 ohms if you have one BUF634 per channel, but 110ohms if you stack two BUF634 per channel.

Peace,
Sanaka

 

[MooseyDoom]

er... sorry this is so late. =P Any ol' battery leads will do. And sanaka's right about r11. I just assumed you were stacking because you had "BUF364 5". Although I guess that might be a typo. Sorry for the confusion.

On side-mounting the rca jacks: Your biggest enemy is probably space. Refer to the image from Tangent's tutorial (i hope he doesn't mind me borrowing it. 0=) Else see the second to last image on the pimeta assembly guide )

Your pimeta will look something like this (the case will be a bit wider, but not much). Your best bet would probably be to mount the jacks between where the caps end and where your battery compartment will begin. (Although you might fit them where Tangent side-mounted the 1/8 jack if you're careful.) Plan the drilling carefully because there's only around an inch of space there, or else your rca jacks will hit a cap or your battery compartment. And don't forget to use long wires to the rca jacks so you can remove the lid without having to pull out the board too.

edit: Hmm... after seeing Pappucho's hammond case, I was thinking that you might have trouble drilling the sides because of the side rails. See the cross-section image from lansing's data sheet. Or you have to cut out a part of the rail where you put the rca jacks. Erm... time to put the rca jacks on the top of the case?

Just kidding.