- 2 days ago
Baby's first noises! The first 25% of the E-70 conversion is done. It took a very long time :P
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01:46Right, that takes care of the intro.
01:48So, let's go through the building process.
01:52That's quite a doozy.
01:54So, let's go do it.
01:56All right.
01:57Painted this front panel.
02:00This is the backside.
02:02Since this folds open, I don't want it to look nice.
02:06And yeah, tomorrow I gotta clean this up.
02:08There's still some wood dust in here.
02:10And then I can paint this last piece of wood.
02:14Yeah, paint this thing.
02:16Right, so I painted it black with some red stripes.
02:19You'll see why later.
02:21Right, first prototype board.
02:24Front panel board is in.
02:27So, a nice thing of this is, it has a screw hole across the entire length.
02:33So, I can make modules that are this small.
02:38Or just modules that cover the entire thing.
02:41I can just make it whatever size I want.
02:43So, this is going to be very modular.
02:45I'm kind of prototyping a design here.
02:48Where I did some testing on cardboard.
02:51Now, doing it for real.
02:53So, that's 3D printed.
02:54With 3D printed sets.
02:58It's a little bit bent for some reason.
03:00But, well.
03:01These panels do have rather large side panels.
03:04So, I need to cut those off.
03:06It's a bit of a job.
03:07But, luckily, it's aluminium.
03:09So, pretty easy to work with.
03:19So, the first bits have been painted.
03:22And I decided to paint this red.
03:25So, here it is with the sliders in place.
03:28The top one is slightly longer.
03:29That's because this one sits on top of the other one.
03:34So, there's kind of an offset there.
03:37And also, because I'm slightly looking down.
03:41On the panel.
03:43I figured that having the bottom one stick out slightly further than the top one.
03:48Would give me easier access from that angle.
03:51Right.
03:52So, a little bit on the process.
03:53First, there is 3D printing, of course.
03:57Next step is gluing on the little separators.
04:02Next step is painting.
04:04Like so.
04:06And then I use this gel pen.
04:09To put on all the text and the labels and everything.
04:13And last step is varnishing it.
04:16So that the markers are properly protected.
04:19And when that's all dried out after about a day.
04:23Then I can mount the levers on there.
04:27And, uh, yeah.
04:29Let's do that 10 times.
04:31The things I do.
04:35So, I propped it up.
04:36All two chairs.
04:37So I can put the digital rack back in.
04:40Without damaging things, hopefully.
04:45I have a little legit feels like I'm working under a car.
04:53It's slightly terrifying.
04:55It's kind of funny to me that on my desk the rack was really big and now it's actually in
05:01the tower.
05:02It actually looks kind of tiny.
05:09That's all of them in place.
05:10I'm missing one white tab.
05:13It's slightly infuriating.
05:14But, other than that, they're all on there.
05:19Yay!
05:19So I was just kind of planning out the front panel controls for the envelope section, the detune.
05:27So we got an octave transpose here, a detune.
05:31Now for the envelopes, um, I'm thinking of using these all switches.
05:35They are pretty much the same as the E70 switches.
05:41I don't remember where I got these from, but they've been in my collection for years.
05:47This will allow to switch between three envelope modes.
05:52I'm thinking maybe an extra switch to activate the repetition and maybe the damp clock.
06:02I'm not sure.
06:03Okay, and this is what version one of the envelopes panel looks like.
06:06We have our mode switches and our repeat on-off switches.
06:11Um, it's kind of cool, but it's kind of, it looks kind of stale.
06:18Um, so I think I'm gonna go for the original buttons.
06:26Those preset buttons.
06:27So to show you the comparison, here's the new panel using the preset buttons from the E70.
06:34And as you can see, they work quite nicely.
06:38And now yeah, let me show you how I built this.
06:41That did mean I had to take the preset panels apart, which was quite a kerfuffle.
06:48Taking the caps off was really easy.
06:50Pulling the lights out as well.
06:52But actually removing the buttons themselves, oh boy, that was really difficult.
06:59Right, it was pretty easy to get the last view out.
07:03And yeah, now I have access to the circuit board.
07:09Right, first time printing with transparent filament.
07:13See here, this is any cubic.
07:19Clear transparent.
07:21Let's see if I can print some button caps.
07:24And if that's something I want.
07:28They have been printed.
07:30And I am impressed.
07:35This actually looks really good.
07:36This is actually the first print.
07:38And it's actually already really good from the get-go.
07:44Surfaces of both feel very nice.
07:47It's super smooth, of course, because they've been printed facing down.
07:51So, okay, let's see if it fits.
07:55Okay, it seems I had my tolerances a little bit too tight.
08:00But it does fit.
08:02And yeah, it's kind of nice.
08:05And then you can see we have a little lamp.
08:08So this is at 9 folds.
08:12So I'm gonna guess at 12 it's gonna be a little bit brighter.
08:15But I don't want to accidentally break these.
08:19You can see it's very bright.
08:22As you can see it does have a nice diffuse effect somewhat.
08:29You aren't looking into the filament itself of the light bulb.
08:34Right, the results of some experiments.
08:37And for the one with the pattern inside of it, I tried filling the pattern with paint.
08:45Because I figured it's gonna be a right fave to have to switch between filaments.
08:51Now, I could print a whole bunch of blank caps, like this one, which doesn't have a pattern.
09:01And then 3D prints a bunch of inserts separately to get this effect.
09:07But it was interesting to experiment to see if I could fill it with paint, use paint markers.
09:14Filling it with white wasn't a really good idea, because it blocks the light pretty well.
09:19Yeah, it looks okay.
09:20Of course, it's a bit messy.
09:22So I also tried painting the inside of a blank cap.
09:27And then writing the text on there.
09:30Honestly, it's probably better to just paint the outside.
09:36Well, that is actually perfectly fine.
09:42That is actually kind of nice.
09:44So that would work.
09:46Of course, I would need to paint the outside rather than the inside.
09:50I experimented with two existing button caps.
09:56So these were the two white ones.
09:59One was from Flutes and the other the Diabasson, I believe.
10:03Yeah, sanding them, it's literally 10 seconds of sanding with 600 grit.
10:07And you have a perfectly blank button cap that you can add text on.
10:13Ultimately, I just decided to sand the original button caps.
10:17So I was absolutely sure I had the right colors.
10:20Because finding the right paint and buying it and all the 3D printing would cost quite a bit of money.
10:26Especially the paint.
10:27So yeah, let's continue with the build.
10:29I am quite happy with this design.
10:32It's so easy to put these switches in.
10:37And they're actually like really sturdy as well.
10:41Okay, time to put the caps on.
10:46And if you're wondering what I did for the electronics.
10:48I just replicated the original circuitry.
10:51Albeit with a different number of chips.
10:54And two rows of three buttons.
10:57And this is the circuit I used for the repeat mode on off buttons.
11:01Albeit with a much larger debouncing capacitor.
11:04Otherwise it would get really weird.
11:06So here we have the amplitude modulation section.
11:13And I've added four buffers.
11:17That will be TLO81.
11:20We're gonna have four footages coming in here.
11:23Which are then buffered in an output to these sliders.
11:31Which act as basically dividers between minus 5 volts and the amplitude modulation signals.
11:41Look at how incredibly proper I'm making these audio cables.
11:45Properly terminators and everything.
11:49Oh that was my skin.
11:52Right and thus begins the process of looming the entire thing.
11:57Connecting it up and testing it.
11:59Okay, tada.
12:01Good progress is being made.
12:03Need to do a lot more wiring.
12:05A lot more looming.
12:06And of course update the envelopes panel.
12:09So that's all the front panel stuff done.
12:12Now it's time to do the internal electronics.
12:14And here comes a lot of modifications.
12:18The first modification of course was a new power supply.
12:22The old transformers were a bit iffy.
12:24Of course the capacitors needed replacing.
12:26It was all a bit old and crusty.
12:28So I decided just make a new one.
12:32I have two very nice toroidal transformers.
12:35Which are incredibly expensive.
12:37So let's actually use them for once.
12:39Dust them off.
12:41And stuff them in the tower of power.
12:44I'll plug it in.
12:47And it's powered on.
12:49And yeah I measured everything.
12:51Also mentioned the transients when it turns on.
12:55So it's nice and smooth.
12:57And yeah it works wonderfully.
13:00I added NTCs to limit the inrush current.
13:03Because toroidal transformers are very greedy when they turn on.
13:08So and I had some issues with the fuses.
13:10And I also noticed the lights were dimming in the room.
13:14Which is of course a very bad thing to happen.
13:17So it has nice NTCs to smooth things out.
13:21It's all nicely fused.
13:22Filtered with Y class capacitors and everything.
13:26It has a nice choke.
13:27Gosh this is a good power supply.
13:30So yeah of course I still need to mount this switch.
13:34This goes on the foldable panel here.
13:37I'm wondering if maybe I want to put this old voltage meter on the panel too.
13:43Of course I still want to put some some isolation on here.
13:50I do have this thing still.
14:04Got it.
14:05I had some
14:11sauce for myself.
14:11I can clean I used it so well.
14:13But this one does not mean to reduce for myself.
14:15There is no water pump heutiche.
14:16It has liters as much as one responders can.
14:17The!, I mean I wear a handę± , right?
14:17Get a boat ride as many years old.
14:18So many drivers a ride,
14:18I survived the line.
14:19Let's see for a house.
14:21I was just room for a house and a plate.
14:32So that's the uh the panel on there with a voltmeter in our on off switch.
14:38Still need to connect most of it.
14:42Yeah you can open it up to access the power supply stuff down here.
14:49Got our fuses all there, we got our main connections, our indication lights, our trimmers and we
14:57got our voltmeter.
14:59Boy I sure love doing things precariously.
15:06Well this is a way of working.
15:16Hmm.
15:17Hmm.
15:19Hmm.
15:22Hmm.
15:24Hmm.
15:26Hmm.
15:33Hmm.
15:45Nice.
15:47That's the uh safety cover added.
15:51All the insulation and grounding and everything.
15:54Yes.
15:56The voltmeter is working.
16:00Nice.
16:01So I can set it to zero to calibrate it.
16:06It's plus 15.
16:08Minus 15 just gives minus because it overflows.
16:12I need to fix that.
16:13But other than that hey it works nicely.
16:17Right.
16:18Excuse the gloved hand.
16:20I'm doing power supply stuff.
16:22Um.
16:23Just tested playing 11 notes on the upper keyboard only.
16:29And that worked.
16:31The organ polyphony is 11 divided over the two keyboards and it's dynamically divided.
16:38So you can play 11 notes on the upper keyboard.
16:41You can play 11 on the lower keyboard but not both at the same time.
16:46Cool.
16:47Because the orchestra does have a limit.
16:50It's 7th for the upper, 7th for the lower.
16:53The reason for this difference is because the flutes are only digitally generated and
16:59don't have any analog filters.
17:00Whereas the orchestra is digital oscillators going into a full analog polyphonic signal path.
17:07So you have 14 filters and 14 VCA's after it.
17:12So it cannot be dynamic.
17:14In contrary to the flutes.
17:16So I need to mod something.
17:18So to turn the flutes into a more of a dual oscillator additive synth.
17:22Quite a few things need to happen.
17:25First to simplify things I'm gonna use only the upper keyboard signals.
17:29So I need to modify the signals that control which signal gets assigned to which keyboard.
17:35That needs to be only upper keyboard.
17:37And that's controlled by signals K1 and K2.
17:41So if I put those through an OR gate.
17:43I can make it so whenever a keyboard is selected.
17:46It will always be the upper keyboard.
17:49Then I'm gonna need a second envelope generator for the second oscillator.
17:54So I'm gonna repurpose the attack envelope generator.
17:57And I'm gonna make sure both envelope generators are exactly the same.
18:02And of course finally both oscillators need to output 10 harmonics for the 10 draw bars.
18:10That also means the low pass filter board, the IF board, also needs to handle 20 signals in total.
18:19Removed the 10K resistor here.
18:22Which is the output of the lower decay setting.
18:26The Visio.
18:29Instead I routed it to the second pin of the attack envelope generator.
18:35So I now have control over the attack timing.
18:40Right.
18:41Same for the other envelope generator.
18:44I repurposed the lower decay Visio.
18:49That's now an upper attack Visio.
18:51It goes to pins 2 and 3.
18:55Normally that's run by this oscillator.
18:58Which is unchangeable.
19:01So now I have an attack clock for this envelope generator.
19:04And for this envelope generator.
19:06Both for the upper keyboard.
19:09And finally this whole section.
19:11This is the attack section.
19:12These are the waveform generators.
19:13Here's the buffer for the envelope generator.
19:17The second envelope generator.
19:18So this stays intact.
19:19And the output of this buffer is going to oscillator 2.
19:23Instead of its internal envelope memory.
19:27And buffer.
19:29And these waveform generators are just unused.
19:33So I'm thinking of desoldering them maybe.
19:36And here's the distributors.
19:37For which I'm going to remove a bunch of resistors.
19:41So I can reuse those connector pins.
19:44For the envelope stuff.
19:45Next batch of mods.
19:47A bit more extensive.
19:48You see I have marked Fu 1 to 3.
19:52Same here.
19:53I removed the 4.
19:55I removed the 4.7K pull up resistor.
19:58For Fu 2.
20:00Same.
20:01I also removed the minus 15 for Fu 3.
20:07And then I basically reconnected things.
20:10To various connections.
20:13For the...
20:13Basically the lower keyboards.
20:15Or connections that I didn't use.
20:17So that Fu 1 to 3.
20:20For both chips.
20:22Now also.
20:23Are connected to the main connector.
20:25Plus to the motherboard.
20:27So I can directly control them.
20:29Alright.
20:31Cut some traces.
20:33And added two diodes to K1.
20:37K2 is just tied to minus 15 volts.
20:42And K1 gets a 0 volt.
20:46So a pull up.
20:47Whenever either K1 or K2 gets a 0 volt.
20:52That way this circuitry will always be fooled into doing things for the upper keyboard.
20:58Yeah I will say.
21:00Now that I have proper flux.
21:04And a solder sucker and everything.
21:06Removing boards.
21:07It's a bit easier.
21:09I am removing the waveform generators from the attack circuit.
21:14Since I am not using the attack circuit anymore.
21:17These are just a waste of electricity basically.
21:22Plus I really want to experiment with one of these.
21:25All righty then.
21:27That's all the mods done.
21:29So.
21:30Yeah.
21:32Connected the buffer outputs of the second envelope generators to the main connector.
21:36Also connected minus 5 volts.
21:39Which is generated over here.
21:42To the connector.
21:44And the minus 5 volt input of the envelope memory over here.
21:49To the connector.
21:50And it allows me to add a control on the front panel.
21:53That blends between the original minus 5 volts.
21:56And a modulation signal.
21:58So I can do amplitude modulation of the second oscillator envelope.
22:03Okay.
22:04This is the waveform generator board for oscillator 2.
22:07I have removed the envelope stuff.
22:10And instead I have routed two connector inputs.
22:14To the envelope inputs for the waveform generators.
22:17So I will be able to connect that on the motherboard.
22:21And then I'll have my modulation.
22:23And my second envelope more importantly.
22:29Nice thing is that there are test points on these boards.
22:32So you can easily measure the envelopes.
22:35Skipping time forwards a little bit.
22:37I noticed that oscillator A's decay would modify oscillator B's decay as well.
22:43So what's going on there?
22:55So I'm wondering if that's an issue.
22:57With the fact that of course the second envelope generator for oscillator B.
23:03Is the attack envelope generator that I repurposed.
23:06And I do think it's working properly.
23:09But of course the attack is not supposed to work like an attack.
23:15It's not supposed to work like a normal envelope generator.
23:18So the master channel processor gets decay finish signals.
23:25From both the normal envelope generator.
23:28In this case oscillator A.
23:29And the attack envelope generator.
23:31In this case oscillator B.
23:33And it says here when the counter comes to zero.
23:37AKA when the envelope has finished decaying.
23:41A pulse is fed out to the DF.
23:44So decay finish terminal.
23:46And it's added to the DF terminal.
23:48The CLP as decay end data.
23:51And then the channel processor.
23:54When it gets the decay finish data.
23:58It feeds out counter clear data.
24:01So the channel counter is cleared.
24:03And it returns to the start condition.
24:04So what I think it might be happening.
24:08Is because envelope for oscillator A.
24:11Is sending a decay finish to the channel processor.
24:16The channel processor is then like okay.
24:18Do a you know.
24:20Do a counter clear.
24:22Okay I can see it visually.
24:24Yellow is oscillator B.
24:27And green is oscillator A.
24:30Now if I open up the decay for oscillator B.
24:37You see that it is decaying properly.
24:40I also open up oscillator A.
24:46You'll see that they're exactly the same.
24:50That when I close up oscillator A.
24:53You see that A is in these little pulse.
24:55That is correct.
24:56But you see that the envelope of B is still the same.
25:00So if it was an issue with the envelopes.
25:03Of course I would see a change in B as well.
25:05But B is not changing.
25:07So I think indeed it is an issue with the waveform counters actually being reset.
25:17Maybe maybe not.
25:18In the service guide it says that this inverted CC is supposed to be tied to minus 15 volt.
25:25Which is needed is.
25:26But we also have this DF1 connection.
25:28Of which I'm thinking it may or may not exist.
25:31Okay yeah the schematic is indeed incorrect.
25:34Got pin 81 over here.
25:37And it goes here to an unpopulated chip.
25:40It then also goes over here through some jumpers to nothing.
25:45It's also not connected there.
25:47So DF1 is indeed doing nothing.
25:50Just got to check if the waveform counters are indeed tied properly.
25:53They probably are.
25:54And indeed if we follow pin 21 here and pin 21 here.
25:59Of the waveform counters they are indeed connected over here to minus 15 volts.
26:05There is a trace running over here to another empty spot.
26:09So normally there would be a jumper here to DF1.
26:15And this jumper here to minus 15 would have been a 470K resistor.
26:21However the misery does not end here.
26:24Here we have the FNW board.
26:28This is number 2 as you can see.
26:31And yeah here we have a whole bunch of inputs.
26:36Mainly the wave counters.
26:39A1 of course from the CLP.
26:42And DF1 also.
26:46Which enables or disables the waveform generators.
26:50And I think this is here.
26:52This is actually is correct.
26:54The guide also says that the envelope generator.
26:57When it reaches 0 it turns off the waveform generators.
27:02So what I need to do.
27:07I need to tie DF2.
27:09Which is available.
27:11To DF1 of FMW2.
27:18Which is oscillator B.
27:21I find it kind of interesting that the FRW board has a whole empty spot here.
27:28I'm starting to think that there may have been something extra here.
27:34So maybe this was for the E75.
27:37Which is the slightly different version than the E70.
27:42It has some extra sounds.
27:45For strings and for like choir stuff.
27:52Tied F1 to ground.
27:54And F2 and F3 to minus 15 volts.
27:56So that will lock oscillator 2.
27:59On the normal octave mode.
28:02I can still use the octave controls.
28:06For oscillator 1.
28:08Yay.
28:08So what you're looking at right now is the IF board.
28:11These are all the low pass filters.
28:13That filter out the clock signals.
28:15From the digital oscillators.
28:18And yeah.
28:19I'm going to need this to get the additive synth working.
28:22All the outputs from the digital section.
28:26I go through these filters first.
28:28And then off to the draw bars.
28:29But because I have 2x10 draw bars.
28:32Instead of 1x9 and 1x6.
28:37I need to adjust this board.
28:41So it can accept 2x10.
28:46Another interesting thing I found.
28:48Is that normally this frame over here.
28:54Is grounded.
28:56So we have 2 ground connections here.
28:59And that obviously is soldered to the frame.
29:03But on this side it's minus 15.
29:06And so that's the analog minus 15 rail.
29:10And that confirms a few things.
29:14If you may remember from a previous video.
29:17I was confused about there being 2 red wires.
29:21On this rack frame.
29:24Because normally it's grounded.
29:26Like on this side you have a bunch of ground points.
29:30And we had a whole bunch of black wires.
29:32But on this side we had some red wires attached.
29:35Which is minus 15 analog.
29:38So that confused me a little bit.
29:40I thought it was an error.
29:41In the color coding at first.
29:44Because Yamaha isn't exactly too precise with that stuff.
29:49But yeah.
29:50It turns out the main power rails.
29:53For the analog rack.
29:55Are actually the frames themselves.
29:58So I am incredibly glad.
30:00That during our construction of the tower of power.
30:03We didn't connect these together.
30:05In any sensible way.
30:08Because that would have gotten really interesting.
30:11First prototype for the connectors is in place.
30:16So I am repurposing the bolts here and here.
30:20Of the original frame.
30:22Since they have some space left on them.
30:26And yeah.
30:27Two brackets.
30:27And then a bracket that holds the actual connector in place.
30:34Righty-o.
30:35That was quite a bit of effort.
30:37But it's done.
30:38So all the inputs and outputs of the IF port are connected.
30:42All 40 of them.
30:44And I also added this grounded shield.
30:50To make sure the cables stay in their place.
30:54And also to provide some extra shielding.
30:58For the audio signals.
31:01Yeah.
31:03Well.
31:03Time to do the rest.
31:06Alright.
31:07So yeah.
31:07Let's cut some traces.
31:08I am using this box cap.
31:11To see if I can keep things a bit clean.
31:16I think it's these traces.
31:20Over here.
31:22Yep.
31:24The reason I am cutting these traces.
31:26Because the two oscillator boards are connected.
31:28Via their outputs.
31:30Which is of course not what I want.
31:31I want two separate oscillators.
31:33Right.
31:34I haven't filmed anything.
31:35Because soldering 40 wires.
31:37And all that tedious stuff.
31:39Isn't terribly exciting.
31:41So I'll give you a quick run through.
31:48Connector is finished.
31:49This is the final version.
31:52It has two levers.
31:56One on each side.
31:57So you can squeeze this together.
32:00And it will pop the connector out.
32:02That way you don't need to pull on anything.
32:05And stress anything.
32:08To get it out.
32:10And popping it in.
32:11You can just squeeze here as well.
32:13On the frame.
32:14So that's all pretty good.
32:18The wires can go through these holes in the sides.
32:21I am currently still printing the cap for it.
32:24It goes over this.
32:25And as you can see.
32:26I have soldered a lot of connections.
32:31So this board is the IF board.
32:33You've seen it earlier in the video.
32:35That's all the low pass filters for the flutes.
32:39Or in the case of the tower.
32:41The additive synth.
32:44The bundles here.
32:45Pink is for oscillator A.
32:47Orange is for oscillator B.
32:49We have our two outputs here from the draw bars.
32:53A and B.
32:54So you can see that those are all connected in there.
33:00Yeah.
33:01All the connections for all the envelopes and everything.
33:04We have some testing connections here.
33:06Audio out from the two draw bars.
33:08Just attached together.
33:09Since they're passive mixers anyways.
33:12And the midi in that you've already seen.
33:15Right.
33:16I'm a little unhappy with the amplitude.
33:19The F and W board put out.
33:24It's around 200 millivolts peak to peak.
33:27I believe it was.
33:28Which is not a very good signal to noise ratio.
33:32As you can see I removed one of the distributor chips here.
33:36Because I don't need them.
33:38They're just useless doing nothing now.
33:40Because I'm only using the upper keyboard outputs.
33:43I don't need any distribution between upper, lower and pedal.
33:48So they're being useless anyway.
33:51So I figured might as well remove one.
33:54And add a little bypass from the input to the output of upper.
33:58And see if that does anything.
34:00So yeah.
34:02Not much difference.
34:03Right.
34:04So there's a bunch of test points on the board of F and W.
34:10So you can test the direct outputs of every single voice card.
34:16And as you can see I'm measuring 8 foot and 16 foot.
34:20And you can see we got a peak to peak of both about 4.3 and 4.4 volts.
34:27So quite chunky.
34:29Yeah.
34:30The service manual is not lying.
34:33Which given Yamaha's reputation for errors in service manuals could have been the case.
34:38There's definitely a 4 volt peak to peak with a minus 2 volt DC offset.
34:46Why am I getting such a weak signal?
34:51If something was pulling down 8 foot I would still measure it.
34:55Because this is shorted now.
34:57And yeah there's a resistor in the way of course.
35:00Okay.
35:01I should.
35:03I should.
35:03I should.
35:04To make sure the IF board is not causing any issues.
35:07I've disconnected the connector.
35:10It also allowed me to test these levers on the sides.
35:13And they work perfectly.
35:14But I disconnected it and I still only get like 300 millivolts on the motherboard output.
35:25Okay.
35:25It does turn out that the mixing resistors for the outputs do load down the signal quite a bit.
35:33So along with the distributors I just removed them since I don't need them anymore.
35:38And I kind of want individual outputs instead of these premixed double harmonics that an organ has.
35:46And yeah that fixed things quite a bit.
35:49And it sounds a lot better.
35:50The signal to noise ratio is great.
35:53And it even removed a lot of noise issues that I had.
35:56So well problem solved.
36:00However it does overdrive the low pass filters on the IF board.
36:04So the waveforms look a little bit different now.
36:09Especially on the low registers.
36:11So that's about the summary of everything that's happened and the progress so far.
36:16I had to cut a lot in this video.
36:18Otherwise it would have been twice as long.
36:20So I'm gonna say goodbye.
36:23See you in the next video.
36:24And here's two more little demos.
36:47So again, thank you all for awakening in this video.
36:50There's a ton ofļæ½ļæ½ Feelings.
36:50Also a few look is looking forward.
36:50It really is not very much sound received.
36:53I think you just need to like it.
36:56I probably don't know what I need.
36:56It really need to be stuck for you !
37:04Many people will know what People are ŃŠ»Š¾Š¶ delicious.
37:04Then there might look for quite a bit.
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