#246

Nice! Always wanted to try that one out :slight_smile: sorry, can’t really help here. May I ask what the resistor network is for?

Here’s a bad picture of the bad picture you mentioned:

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#247

I think I have some of these knocking around a draw, I guess they need to be the 4 pin type? (I have heaps of random 2 pins … )
Any chance you could draw a rough schematic?

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#248

Yes that’s it. not as bad a picture as I remember. but not detailed enough to copy.

If i recall not all the diodes are the same way around in that picture…I was quite random in which way i put the leds in- they all lit up and seem a little flickery.

The silver and black thingy is just to join up the six rows onto one bus. The resistor ladder wasnt any thing crucial just taking the live signal from differnt points along it as a protection, i think the cap i used as a filter sounded a bit more subtle moved along it a few notches.
yes happy to draw up a scheme. those oscillators must have a nice stable 5v.

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#249

I recently saw this mod synth performer Alphastare play with a couple racks, and on top his rig was this metal tin with springs and so on sticking out of it, and a contact mic inside. I have the parts and hope to make something similar soon - how cool is that? Sorry no programming involved –

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#250

looks DIY to me, though, so that counts. Don’t forget to pre-amp the contact-mic when you’re recording it!

#251

It’s the Multi-Plunk Pocket Gamelan by Crank Sturgeon! :slight_smile: Unfo not in his shop anymore

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#252

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Finally finished the Alex Rice pre-amp’d contact mic and a homemade Lom Priezor. I am by no means a natural, but they are almost certainly dead easy if you’re experienced.

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#253

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Any chance you could draw a rough schematic? @JaggedNZ

This is all I am doing. using a regulated 5v supply but a very cheap one. they get very hot and stop working forever if you give them 9v. I’m keen to get a longer array boarded up than just 6 and to get it working with nicer diodes.
The pins on the crystals arent numbered 1,2,3,4 but what they would be if they had ic spacing. So they are 1,4,5,8 and 1,7,8,14

On edit: it looks like the original circuit has a grounded pin 1. I didnt do this.

#254

Thanks, thats excellent. Looks like I only have one 4 pin xtal, but I have some weird 3 pin high precision xtals I think I must have pull from some RF gear?
Otherwise I’ll have to dig in my parts bin to see if I have anything with schmit triggers that are fast enough.

Should the lead on the left of the bottom xtal be blue / ground, not red?
And you where saying diodes can be in mixed orientation? I guess this makes some sense… (Some would push and some would pull?)

#255

yes
as only 3 pins are used your 3 pin ones might be fine…just google the product codes for a data sheet see which pin is pos , grnd and signal

#256

Since this thread was bumped, just thought I would chime in with a recent build.

Just finished the AML ez1073 Pre kit and I have to say that it was one of the most organized, best documented kit of any kind that I’ve ever built. The build was extensive, but very straight forward because of the great instructions. The unit itself is beautiful and the components appear to be top shelf. A must-build at ~$200.

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#257

looks lovely…so is it a mic preamp for a mixing desk?

#258

This is a 500 series module - basically a Neve 1073 broken into two components: the preamp and the EQ. This is the preamp. I plan on building the EQ once it arrives (hopefully this week). They link together via a ribbon cable and are designed to sit side-by-side in a 500 series rack.

Hopefully, I will be able to run some frequency sweeps through it later today. I’d like to see how it compares to my Chroma module.

#259

This is great!

I’ve eyeballed various of these 500 series things, but I’ve been put off as I’m not sure how to approach it if I’m only interested in having a single unit (i.e. a single “nice” pre).

What are you using for your enclosure/power and I/O?
Are there any reasonable solutions for having just one or two of them?

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#260

Actually, my planned use case, for now, is to put the preamp and EQ module in a 2-space DIYRE rack and use it as a sort of single-channel strip, primarily for tracking.

I have future plans for a hybrid mixing solution and will eventually incorporate 8 channels of summing through a preamp rack and an EQ rack… but for now, just planning on the single strip.

The DIYRE rack is fairly cost effective for getting up and running with 500-series - especially once you start stacking them. I will eventually get a full 8-10 slot rack but will still keep the DIYRE. You can stack up to 4 of them off a single PSU. Build was easy and well documented. The only downside is that the DIYRE rack obviously won’t work for double-width modules - a lot of compressors and such.

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#261

Ah that’s cool. I hadn’t seen a nice all-in-one solution like that (though I admittedly haven’t searched too thoroughly).

I’ll eyeball some modules and make a list.

#262

for those in the EU there is also a single space kit from Sound Skulptor- https://www.soundskulptor.com/en/proddetail.php?prod=501

I haven’t built anything from them yet but I’ve heard good things.

#263

Just to clarify - the AML ez1073 add-on EQ connects to the preamp module via a ribbon cable. I don’t believe the EQ can be used standalone. To use both, you would need a rack that provides space for the ribbon connection. I assume the I/O flows solely through the preamp side. More to come.

BTW, the preamp does sound great. There are a total of 9 PCBs used in its construction. Very impressive design!

#264

Can anybody recomend a nice complex filter diy kit?
Thinking of sth like 3 Sisters or other combined filtering.
Doesnt need to be 12v but i can only find the typical mutron clones in 9v

Also i wont have CV sources and would love to hack my vactrol LPG into a build but cant come up with anything that makes sense to not needing the CV for it.

#265

They sound great! Built two MP512, two CP5176 and a MP573.

1 Like