JHS Mini Bomb- Gutshots and values

kev1n · Post by **kev1n** » 24 May 2012, 20:20

Just got this today. Not very impressed with the soldering on the perf. Values on the resistors are 5.1k and 100k. Caps are 22uf electro and .1 uf film. Pot is B1M. can't tell the diode type. Tranny is j201. Hope this helps. Ask if ya need anything.

rocklander · Post by **rocklander** » 24 May 2012, 20:24

wow.. that soldering is worse than mine

kev1n · Post by **kev1n** » 24 May 2012, 20:28

that was my response...

Mbas974 · Post by **Mbas974** » 24 May 2012, 22:30

Can anyone post the schematic.... picture are ok but can't figure out the complete circuit.

100n input cap to gate
22u output cap from drain
100K drain res
B1M + 5K1 source res

is it correct ?

J0K3RX · Post by **J0K3RX** » 24 May 2012, 23:14

wow man! I feel bad for you... hope you didn't pay much for it!

culturejam · Post by **culturejam** » 25 May 2012, 01:41

Smallbear perfboad FTW!

kev1n · Post by **kev1n** » 25 May 2012, 03:02

I didn't pay for it. Got in a trade,figured I'd help get it traced then sell it to an unsuspecting p&w guitarist. I just don't see how jhs stays in business with shoddy work like that.

J0K3RX · Post by **J0K3RX** » 25 May 2012, 03:42

kev1n wrote:I didn't pay for it. Got in a trade,figured I'd help get it traced then sell it to an unsuspecting p&w guitarist. I just don't see how jhs stays in business with shoddy work like that.

Glad to hear you weren't one of the unsuspecting...

$110.00 standard - $145.00 for hand paint???

coldcraft · Post by **coldcraft** » 25 May 2012, 03:48

i'm going to guess thats an older one. FWIW, (and I dislike JHS too) most of their recent stuff is built on nice fabricated boards (even if 90% of them are clones).

kev1n · Post by **kev1n** » 25 May 2012, 16:19

So... i sent an email talking to johs scott bout the build quality, and he offered to exhange it for a new one and even pay my shipping. So if anyone wants more pics, aske befor e i send it off. I will also post pics of the new one when i get it.

lukatosh · Post by **lukatosh** » 25 May 2012, 16:51

kev1n wrote: So if anyone wants more pics, aske befor e i send it off. I will also post pics of the new one when i get it.

Always!

coldcraft · Post by **coldcraft** » 25 May 2012, 17:36

kev1n wrote:So... i sent an email talking to johs scott bout the build quality, and he offered to exhange it for a new one and even pay my shipping. So if anyone wants more pics, aske befor e i send it off. I will also post pics of the new one when i get it.

this is a good move on their part.

Nocentelli · Post by **Nocentelli** » 25 May 2012, 19:21

Ironic that JHS is slightly ashamed of the shoddy solder job and is prepared to replace this unit with a new one despite the fact the current owner didn't even buy it, yet an early lovepedal with a similar degree of hamfisted soldering and derivative circuit would probably sell for far more than a recent factory made version.

kev1n · Post by **kev1n** » 26 May 2012, 16:01

anyone want to put a schematic together?

Devi Ever · Post by **Devi Ever** » 27 Jun 2012, 18:54

Anyone know what this is a clone of?

RnFR · Post by **RnFR** » 27 Jun 2012, 19:48

I'm guessing one of your pedals.

Seiche · Post by **Seiche** » 27 Jun 2012, 21:24

aaaand the shit-soldering award goooes toooo....

Jack Deville · Post by **Jack Deville** » 27 Jun 2012, 21:25

Wagers on common source?
It is possible this is an "original" design.
Common source amplifiers can be an effective means of simple voltage multiplication, albeit, with their own host of drawbacks and disadvantages, which appear to have been ignored/negated given the suggestion above.

atreidesheir · Post by **atreidesheir** » 28 Jun 2012, 19:43

What is the role of the diode in a common source amplifier?

culturejam · Post by **culturejam** » 28 Jun 2012, 19:59

atreidesheir wrote:What is the role of the diode in a common source amplifier?

You can bias the amp with a diode (instead of using a resistor from source to ground).

Or were you asking a rhetorical question?