Hey everyone,
I'm unfortunately having some problems with my Space is Fun Reverb from Moon Electronics.
(A Death By Audio Reverberation Machine clone.)
You can find the complete documentation from the manufacturer here: https://moonnelectronics.bigcartel.com/product/space-is-fun
There is a signal coming out, but the reverb effect is barely noticeable and, compared to the dry signal, also very quiet (if I use the blend poti).
I measured the device with an oscilloscope (200mV sine wave at 1kHz was applied to the input).
I've put the measurement results as test points in the circuit diagram.
(TP7 and TP8 are measured with the 220nF capacitors in the signal path and change in relation to the dark/bright switch.)
Is the very noticeable volume loss in the area around the dark/bright switch really normal?
Or do you see the problem elsewhere?
5V is also being applied to the reverb module, and gain and volume are working as intended.
Like suggested in another community, I lifted R20 and could got a nice signal of 600mV, insted of 100mV with R20 in place.
But I can confirm that R20 is a 1k resistor (measured before and after the lifting) with no additional shortage.
I lifted it on the GND side, so any shortage on the signal side would be still in place.
I followed all other measurments with this setting, (bright with R20 lifted) and I think the signal matches quet good with the dry signal when it comes to the signal strength.
Besides the question, is that drop on R20 normal, and if so, why is it in place, I face another issue: It was before already hard to not clip on the last stage, now it is nearly impossible to not clip on IC2_B.
Even with the gain on absolut minimum, I got a signal between 2-4V output on it (signal is pulsing).
Even with a slight increase of gain there is immediate a hard clipping.
I can reproduce this with several guitars (Singe Coil to Humbucker).
I know that the Space is fun is known for being sensitive on the Gain, but I think it is simply not usable this way, and far from this:
www.facebook.com
Regarding Peter Semple question about the single frequency, I tried a few others and also put in a quitar while measuring on TP5 & 6, still a massive signal loss.
------------
I repost the schematics with the newer measurments and in higher resolution.
Also some pictures of my build...that would need some explanations:
I know, not the cleanes build, but I build it without buing all parts new (I got the kit without any caps).
The white caps are the 0,22µF Film caps, the styroflex is C11.
I measured all these "wild cabs" several times to ensure that these have no shortage or other connection issue.
The solder joints look drastically better in real than on the pictures
The photo of the bare PCB ist not my PCB, it is the stock picture from Moon Electronics, but I did not see any difference to mine.
I appreciate any help!
Please let me know if there are any other things I should measure.
Regards,
Felix
I'm unfortunately having some problems with my Space is Fun Reverb from Moon Electronics.
(A Death By Audio Reverberation Machine clone.)
You can find the complete documentation from the manufacturer here: https://moonnelectronics.bigcartel.com/product/space-is-fun
There is a signal coming out, but the reverb effect is barely noticeable and, compared to the dry signal, also very quiet (if I use the blend poti).
I measured the device with an oscilloscope (200mV sine wave at 1kHz was applied to the input).
I've put the measurement results as test points in the circuit diagram.
(TP7 and TP8 are measured with the 220nF capacitors in the signal path and change in relation to the dark/bright switch.)
Is the very noticeable volume loss in the area around the dark/bright switch really normal?
Or do you see the problem elsewhere?
5V is also being applied to the reverb module, and gain and volume are working as intended.
Like suggested in another community, I lifted R20 and could got a nice signal of 600mV, insted of 100mV with R20 in place.
But I can confirm that R20 is a 1k resistor (measured before and after the lifting) with no additional shortage.
I lifted it on the GND side, so any shortage on the signal side would be still in place.
I followed all other measurments with this setting, (bright with R20 lifted) and I think the signal matches quet good with the dry signal when it comes to the signal strength.
Besides the question, is that drop on R20 normal, and if so, why is it in place, I face another issue: It was before already hard to not clip on the last stage, now it is nearly impossible to not clip on IC2_B.
Even with the gain on absolut minimum, I got a signal between 2-4V output on it (signal is pulsing).
Even with a slight increase of gain there is immediate a hard clipping.
I can reproduce this with several guitars (Singe Coil to Humbucker).
I know that the Space is fun is known for being sensitive on the Gain, but I think it is simply not usable this way, and far from this:
Pedalboards of Doom | My version of the 'Space is fun' pcb by Moonn Electronics | Facebook
My version of the 'Space is fun' pcb by Moonn Electronics . I called it 'Atmosphere Creator' and added all mods that Nils suggessted. Awesome pedal.
www.facebook.com
------------
I repost the schematics with the newer measurments and in higher resolution.
Also some pictures of my build...that would need some explanations:
I know, not the cleanes build, but I build it without buing all parts new (I got the kit without any caps).
The white caps are the 0,22µF Film caps, the styroflex is C11.
I measured all these "wild cabs" several times to ensure that these have no shortage or other connection issue.
The solder joints look drastically better in real than on the pictures
The photo of the bare PCB ist not my PCB, it is the stock picture from Moon Electronics, but I did not see any difference to mine.
I appreciate any help!
Please let me know if there are any other things I should measure.
Regards,
Felix
