Micro Arp 2600 Clone Broadwave u2K6 Hand Built Modular Synth

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via this auction

via the seller: "For Sale is an ARP 2600 Clone known as a BroadWAVE u2K6 hand built by Andy @ Broadwave & I purchased it from him.

Below is the original info from Andy when I purchase it:

Up for Auction is a handbuilt BroadWAVE u2K6 (Micro ARP 2600). It is a one-off unit made as a pre-production to an ARP 2600 clone that I have recently completed.

Please note that you will require a MIDI to CV converter to use this synth.


It's built into a Tolexed 19" 6U cabinet with strap handle... as yet, I have no idea how to pack this for the courier - don't be surprised it it turns up in a suitcase.

Almost all of the internal circuits are copied directly from the ARP 2600 - the exception being the VCF, LFO and Dual AR envelope generators which are direct copies from the ARP Odyssey.

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Broadwave" Modular Synth 6U - Unfinished ARP 2600 Based Project

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"The modules are:-

1 x Master CV/Gate input with Tune, Fine Tune, Glide, FM1 & FM 2 controls - Internally patched to All VCOs
3 x ARP 2600 VCO (4027-1) Clones, switchable to LFO mode and include hard sync I/O patch points
1 x ARP Odyssey MkII VCF (4035 - "Moog Infringement") Freq, Res, CV1, CV2, Level out
1 x ARP 2600 Log/Lin VCA (4019) Gain, Level 1, Level 2, CV1, CV2
1 x ARP 2600 Ring Mod (4014) with AC/DC switch
2 x ARP 2600Noise (4022) Level & Colour controls
1 x ARP 2600 CV Processors - Mix, Invert, Voltage Shifter, Lag
1 x Divider - Divide by /2, /4, /8, /16, /32 & /64 - (Great for creating sub osc)
1 x 4/8 input mixer (eg Input 1 & 5 share the first level control, 2 & 6 share the second etc)
2 x 5 way multiple
2 x 1 in 4 out Active Buffers
1 x Utility Module with Lag, Voltage Shifter and Comparator (for creating Pulse waves from saw input)
2 x Utility Lin VCA (Curtis CEM3360) No controls, just Signal in, CV in and signal out
1 x Voltage controlled switch - Clock in, I/O 1, I/O 2, Common
1 x Roland System M100 ADSR
1 x "Electric Druid" PIC Based ADSR with Short/Long envelope rate"

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Broadwave U2K6 Modular Synthesizer

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via this auction

"Up for Auction is my self built BroadWAVE u2K6 (Micro ARP 2600). It is a one-off unit made as a pre-production to an ARP 2600 clone that I have recently completed.

I have set a reserve price at £500 to cover the cost of the initial build and the auction will run to the end - I'm afraid offers will be ignored and returns are not accepted.

Please note that you will require a MIDI to CV converter to use this synth.

It's built into a Tolexed 19" 6U cabinet with strap handle... as yet, I have no idea how to pack this for the courier - don't be surprised it it turns up in a suitcase.

Almost all of the internal circuits are copied directly from the ARP 2600 - the exception being the VCF, LFO and Dual AR envelope generators which are direct copies from the ARP Odyssey.

What does it have that the 2600 doesn't? - A Master CV section (tune all VCO's at once) with 2 FM inputs and Glide, 3 Full 2600 VCO's with sync (sync circuit taken from the ARP Odyssey), and additional AR envelope generator and an LFO with square and sine outputs (tied to the S&H clock frequency), extra multiples.

What's missing? - The 2600 reverb/mixer section and additional FM inputs on the VCO's (sadly, space did not permit these)

The VCF is the 4035 "Moog Infringement" filter from the Odyssey MkII. There is no intrinsic difference between this and the original 4012 VCF from the early 2600 - just a difference in input/output levels... it sounds great : )"

Module and tech details at the auction and captured below.

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"Broadwave" Modular Synthesizer

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Note this is not an ARP 2600 clone.
"This synth is almost entirely made from Ray Wilson's designs and his high quality PCB's (www.musicfromouterspace.com). It's a completely home made affair, and as such I would prefer bidders to be familiar with Synth DIY techniques, as calibration and trouble shooting is not for the feint of heart : )

No keyboard is supplied, and as such you will need either a MIDI to CV converter or Keyboard capable of delivering the standard 1v/Oct, Gate and Trigger.

The case is made from 12mm, black Tolex covered MDF (unfortunately the Tolex on the back panel has started to lift, so will need to be re-glued), with protected corners and carrying handle. All the panels are made from 2mm aluminium with dye sublimated graphics directly onto a 0.5mm aluminium substrate. As you can see from the pics, the panels are mounted quite crudely onto the MDF frame and would benefit from someone who's prepared to spend a bit of TLC on it. All circuit schematics and calibration info is included.

The measurements are: 215mm (D) x 840mm (W) x 490 (H) and weighs 16 kilos

As it stands, all modules are fully working and consists of the following:

4 x VCO - 3 x CV Mod inputs, 1 x Linear FM input, 2 x PWM CV inputs, Sync in/out, Saw, Square, Triangle, Sine outs

1 x 24dB Low Pass VCF - 4 x Signal inputs, 2 x CV Mod inputs, 1 x Resonance CV Mod input, VCF out

1 x 12dB State Variable VCF - As above but with Low, Band and High Pass outputs

2 x VCA - Signal in, 2 x CV Mod inputs, Log/Lin select, VCA out

3 x ADSR - Gate in, Trigger in, Short/Long Time switch, Gate indicator, ADSR out

2 x Voltage Controlled LFO - 2 x CV Mod in, 1 x PWM CV Mod in, Saw, Square, Ramp, Triangle outs

1 x Noise Module - White, High Pass, Low and Grainy out, Random Trigger out

1 x Sample & Hold with Lag - Sample in, CV for Clock Rate, Trigger out, Sync in, CV Out

2 x Ring Mod - 1 x AC Coupled, 1 x DC Coupled

4 Channel AC/DC Mixer/Inverter - Each channel has 3 inputs, Inverted output available

2 x Lag Processor

4 x Buffers (1 in 4 out)

4 x Passive Multiples (4 groups of 5, normalised for 2 groups of 10)

8 x Passive Multiples

1 x +/- 15 volt, 1A PSU - Internally mounted (From a Crumar Stratus, but does the job admirably!)

20 Patch leads to get you going!

One Module is incomplete, which was made for MIDI to CV. The panel and sockets are in place, but no electronics are supplied." See the Broadwave label below for more.

BroadWAVE Synthesizers / DIY Modular

Pictured on top is the BroadWAVE "Big Burtha." I actually put a couple of posts on it back in 2007. I just spotted this new image on sequencer.de and thought I'd put a new post for anyone that might have missed it. You can find more info at the BroadWAVE Synthesizers site.

Below is the Modyssey "Blaze" and the Prodyssey ASB Controller. See the site for more.

Solarmaxx BroadWave Synthesizer

Two more shots of the BroadWave Synthesizer.

The BroadWave Synthesizer

"3 x VCO - 3 x CV Mod inputs, 1 x Linear FM input, 2 x PWM CV inputs, Sync in/out, Saw, Square, Triangle, Sine outs
1 x 24dB Low Pass VCF - 4 x Signal inputs, 2 x CV Mod inputs, 1 x Resonance CV Mod input, VCF out
1 x 12dB State Variable VCF - As above but with Low, Band and High Pass outputs
2 x VCA - Signal in, 2 x CV Mod inputs, Log/Lin select, VCA out
2 x ADSR - Gate in, Trigger in, Short/Long Time switch, Gate indicator, ADSR out
2 x Voltage Controlled LFO - 2 x CV Mod in, 1 x PWM CV Mod in, Saw, Square, Ramp, Triangle outs
1 x Noise Module - White, High Pass, Low and Grainy out, Random Trigger out
1 x Sample & Hold with Lag - Sample in, CV for Clock Rate, Trigger out, Sync in, CV Out
2 x Ring Mod - 1 x AC Coupled, 1 x DC Coupled
4 Channel AC/DC Mixer/Inverter - Each channel has 3 inputs, Inverted output available
2 x Lag Processor
4 x Buffers (1 in 4 out)
4 x Passive Multiples (4 groups of 5, normalised for 2 groups of 10)
2 x MIDI CV Converter - 1 x Low Note, 1 x High Note"

Title link takes you there. via Georg.