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Messages - Spenzerleehorton

#1
Build Reports / Re: Harbinger two build problems
October 11, 2020, 10:34:32 AM
Changing r52 to 470r and jumping r54 should sort it
#2
Build Reports / Re: Harbinger two build problems
October 11, 2020, 08:41:31 AM
I've found the problem, the nsl32 were the wrong way round!!
Now the problem is the fast speed is pretty slow so is there anyway to speed that up?
#3
Build Reports / Re: Harbinger two build problems
October 11, 2020, 05:59:59 AM
Cant get the speed control working the lower part of the circuit voltages seem about right but control of speed???

Can anyone help please?
#4
Build Reports / Re: Harbinger two build problems
October 11, 2020, 02:08:32 AM
Getting quite a lot of movement on the voltages,  I know it mentions it but I still have no speed control and voltages on q12 and q12 seem about right, q14 looks off so I'll change that, also seem to be getting little sparks around the q12 area? Only sometimes when I test MM in that area?
Still none the wiser!!

Anyone got any ideas?
#5
Build Reports / Re: Harbinger two build problems
October 09, 2020, 05:26:39 AM
 Changed 100k speed pot and still the same no speed and low effect, true bypass now correct.
Voltages on q12 seem about right but need to investigate a bit further
#6
Build Reports / Harbinger two build problems
October 08, 2020, 11:46:59 AM
Hi,

Ive just built the harbinger two and having some issues.

first issue is the bypass, i can only have the effect on rather than bypassed, ive wired it as per the documents and it looks wrong to me?

Ive found a diagram which is correct and can see the errors so its not a biggie.

the main problem i have with the effect on is that the speed control doesnt work?
will check voltages and see if it can find out whats up!!

i can hear the effect, even though its very low in effect volume.
#7
Ok I will update as per that thread but will check all voltages first of all.
#8
Hi All,

I've built the Distortion 3 and all controls seem to work but there not very much gain/distortion?
I get more gain from my tube screamer!!
Bit disappointed with this pedal at the moment, hope it's something I've done wrong.
#9
right i've fixed it, anyone else who gets this issue of high frequency pitch somewhere around 5-8k change the charge pump on the switch pcb.
all sorted.
#10
I have read that the opa2134 May be missing a cap to tame the top end?
And to try more modern opamp, 4558,5532,tl072 or tl082 to see if high end is attenuated due to these having a high end cap in them?
I maybe clutching at straws here but without any input I don't know.
#11
General Questions / Re: Death CLaw delay problem!!??
December 09, 2018, 03:58:49 AM
this effect is a total loss at the moment!!!
i have removed Q3 and the surrounding caps and resistors along with switch as advised on pdf as i just want a simple delay pedal.
there seems to be signal both sides of R7 and signal at one leg of R13.
But apart from that i don't see any signal getting to IC2 or IC3?
Voltages look ok on both IC2 and IC3 apart from pin 7 on IC2 which is 1.7v.

bit stuck on how to progress with this one?
#12
feel pretty isolated here, with no help, both the Deathclaw and this tractor beam i'm having a hard time with and would really appreciate some help please.
This tractor beam i'm getting a high pitched frequency when the effect is off and when the effect is on, apart from that the pedal now works as it should.
could anyone point out which capacitor or what part of the circuit i will need to look at which addresses this high frequency interference please.
#13
Seems I'm totally on my own here!!!

Will check everything again.
#14
The high pitch sound is there even when mix is set off CCW?

Any ideas anyone about how to sort this?
as i'm so close to getting this fully working, it sounds pretty good using the TL074, also the TLE2074 works fine as well but the high pitched sound is there all the time when effect is on?
#15
ok parts arrived this morning, i've managed to change the 10k's and 22k arrays, wired back up with temp transistors which are not matched and i have phasing!!!
Just need to change transistors for matched 4 then change 1M pot for reverse taper then put back in case.
Only problem i have is a high whistling pitch that i need to get rid of?