MORPHOR Analogue Plectrum User manual
AP-1
Analogue Plectrum
Warranty
THIS PRODUCT IS COVERED BY MORPHOR'S LIMITED WARRANTY, FOR TWO YEARS FOLLOWING THE
DATE OF PURCHASE (PROOF OF PURCHASE/INVOICE REQUIRED).
THIS WARRANTY COVERS ANY DEFECT IN THE MANUFACTURING OF THIS PRODUCT.
THIS WARRANTY DOES NOT COVER ANY DAMAGE OR MALFUNCTION CAUSED BY INCORRECT USE - SUCH
AS, BUT NOT LIMITED TO: POWER CABLES CONNECTED BACKWARDS, WRONG POWER SUPPLY
VOLTAGES, BACKWARDS OR REVERSED EURORACK BUS BOARD CABLE CONNECTION, EXCESSIVE
VOLTAGE LEVELS, ABUSE OF THE PRODUCT, REMOVING KNOBS, CHANGING FACE PLATES, EXPOSURE TO
EXTREME TEMPERATURE OR MOISTURE LEVELS, OR ANY OTHER CAUSES DETERMINED BY MORPHOR TO
BE THE FAULT OF THE USER ARE NOT COVERED BY THIS WARRANTY, AND NORMAL SERVICE RATES WILL
APPLY.
THE WARRANTY COVERS REPLACEMENT OR REPAIR, AS DECIDED BY MORPHOR. PLEASE CONTACT OUR
CUSTOMER SERVICE (SUPPORT@MORPHOR.IO) FOR A RETURN AUTHORIZATION BEFORE SENDING THE
MODULE. THE COST OF SENDING A MODULE BACK FOR SERVICING IS PAID FOR BY THE CUSTOMER.
CHANGES AND/OR MODIFICATIONS TO THE MODULE NOT APPROVED BY MORPHOR COULD VOID THE
USER'S AUTHORITY TO OPERATE THE EQUIPMENT.
THE INSTRUMENT IS TO BE SHIPPED IN THE ORIGINAL PACKAGING ONLY. ANY INSTRUMENT SHIPPED TO
US FOR RETURN, EXCHANGE, WARRANTY REPAIR, UPDATE OR EXAMINATION HAS TO BE IN ITS ORIGINAL
PACKAGING! ALL OTHER DELIVERIES WILL BE REJECTED. THEREFORE, MAKE SURE YOU KEEP THE
ORIGINAL PACKAGING AND TECHNICAL DOCUMENTATION.
PLEASE FOLLOW THE INSTRUCTIONS FOR USE OF THE INSTRUMENT CAREFULLY BECAUSE THIS WILL
GUARANTEE PROPER OPERATION OF THE INSTRUMENT. DUE TO THE FACT THAT THESE INSTRUCTIONS
TOUCH ON PRODUCT LIABILITY, IT IS ABSOLUTELY IMPERATIVE THAT THEY BE READ CAREFULLY. ANY
CLAIM FOR DEFECT WILL BE REJECTED IF ONE OR MORE OF THE ITEMS HAS NOT BEEN OBSERVED.
DISREGARD OF THE INSTRUCTIONS CAN VOID THE TWO YEARS COVERED BY WARRANTY.
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Package Contents
In the Morphor AP-1 - Analogue Plectrum box you will find:
• The Morphor AP-1 module itself
• A 16-to-16-pin Eurorack power cable (already plugged in)
• 4 high-quality thumb screws (with Phillips, slotted and hexagon socket) including washer
• An original Morphor brand sticker
If any of the above items is missing, please contact your dealer or send an email to support@morphor.io.
Safety Instructions
I. Never use the instrument in a humid or wet environment, nor near flammable goods. The instrument
must never be operated outdoors but solely in dry rooms.
II. No liquids or conducting substances must get into the instrument. Should this be the case, the
instrument is to be disconnected from mains power immediately and examined, cleaned and possibly
repaired by a qualified technician.
III. Never expose the instrument to temperatures above +50° C or below -10° C. Before operation, the
instrument should have a temperature of at least 10° C. Do not expose the instrument to direct sunlight.
Do not install the instrument near heat sources like heaters, open fire places, central heating etc. Keep
the top of the instrument clear in order to allow proper ventilation, otherwise the instrument could
eventually overheat.
IV. Never place heavy objects on the instrument.
V. Transport the instrument carefully, never let it drop or fall over. Make sure that during transport and in
use the instrument is supported properly and cannot drop, slip or fall over because people might get
injured.
VI. The instrument may only be used for the purpose described in this operating manual. Due to safety
reasons, the instrument must never be used for other purposes.
Conformity
This device meets the requirements of the following standards and/or directives: 2014/30/EU, 2014/35/
EU, 2009/125/EC, 2011/65/EU, 2012/19/EU, EN 60065, EN 55032, EN 55035. Please refer to the online
Declaration of Conformity for detailed information regarding compliance.
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Installation
Before you start
Morphor modules are designed to be used with an Eurorack-compatible case and power supply. We
recommend you to use a case with an adequate high-quality power supply. Before installing the module in
your case, you must ensure your power supply has a free Eurorack standard PSU connector (2x8 pin
header connector) and sufficient available capacity to power the module:
1. Make a separate sum of the +12 V, -12 V, +5 V and -5 V maximum current draws respectively for all your
modules, including the new one. The maximum current draw is specified in the manufacturer's
technical specifications for each module. You can use a tool like ModularGrid to help you calculate the
total values for your case.
2. Compare each of these sums to the specifications of your case’s power supply.
3. Proceed only with the installation if none of the total values exceeds the power supply’s specifications.
Otherwise you must remove some modules to free up some capacity or upgrade your power supply to
allow more capacity in your case. If you do not adequately power your modules, it may result in damage
to your modules or power supply. If you are unsure, please contact us before proceeding.
4. Make sure your case has enough free space (HP) to fit the new module. To prevent screws or other
debris from falling into the case and shorting any electrical contacts, do not leave gaps between
adjacent modules, and cover all unused areas with blank panels. Similarly, do not use open frames or
any other enclosure that exposes the backside of any module or the power distribution board.
Installing your module
Always turn offthe power to the case and disconnect the power cable when
installing or removing a module from your case to avoid injury or equipment
damage.
The Morphor AP-1 uses the -12 V and the +12 V rail of the power supply (using
a standard Eurorack 2x8 pin connector). The red stripe of the included ribbon
cable (-12 V side) must be oriented on the same side as the “RED -12 V”
marking on the module and on your Eurorack power distribution board.
The module draws a maximum current of 46 mA from the +12 V rail and
maximum 46 mA from the -12 V rail.
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Rear side of the module
Introduction
The Morphor Analogue Plectrum (AP-1) module is a high quality, fully
analogue Eurorack module that can produce plucked string-like
sounds. It is a compact all-in-one solution for generating amazing
bass, acoustic guitar, percussion and other amazing sounds.
The module is based on the Karplus-Strong principle with a true
analog audio path built with an authentic bucket brigade delay
(BBD) circuit which is recognizable by its specific timbre. By using
carefully chosen high quality components, this module has a rich,
warm analogue sound.
Being only 10 HP in width, you won't need a lot of space to get going
and start creating some incredible sounds.
If your looking to fully sculpt the string-like sound, you can extend
the internal Karplus-Strong loop by breaking out the signal and
adding external modules like filters and/or FX modules to it.
Happy morphing!
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Controls & Connections
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TRIG [ 1 ]
To pluck the “string”, simply insert a trigger pulse into the input.
Short triggers work great but you can play around with longer
pulses to get more experimental sounds.
1 V/OCT [ 2 ]
1 V/octave pitch control voltage input.
TUNE [ 3 ]
The tune control knob spans 15 Hz - 800 Hz.
CV (tune/frequency) [ 4 ]
Linear frequency control voltage input. Can be used for frequency
modulation (FM) for example.
The control voltage supplied can be attenuated using the control
knob.
FEEDBACK [ 5 ]
Level of the Karplus-Strong feedback loop gain. With this you can
set a short or long sustain.
COLOUR [ 6 ]
Controls the cut-offfrequency of the internal single pole low-pass
filter (LPF). Turning left makes it sound darker, to the right brighter.
CV (colour) [ 7 ]
Linear cut-offfrequency control voltage input. The control voltage
supplied can be attenuated using the control knob.
KARPLUS STRONG LOOP EXTENDER [ 8 ]
Use the toggle switch [8] and select EXT to feed the Karplus-
Strong loop audio OUT [8a] to any external modules and return
your noodled audio signal back into the Karplus-Strong loop IN
[8b].
Use the toggle switch [8] and select INT to use the internal low-
pass filter (LPF) in the Karplus-Strong loop, combined with any
external signals that may be connected to Karplus-Strong loop IN
[8b].
OUTPUT [ 9 ]
Your juicy analogue audio output signal at 10 Vpp.
1
2
3
6
5
4
7
8
9
8a
8b
Technical Specifications
Support
To provide the best possible performance with the highest quality and reliability for music professionals, all
Morphor's products, including the AP-1 are designed, manufactured and tested in-house with the highest
possible standards.
In case your module is not functioning as it should, make sure to check your Eurorack power supply and all
connections first.
If the problem persists, contact your dealer or send an email to support@morphor.io. Please mention your
serial number, which can be found on the module's rear side.
Module Revision History
Revision 1.0 - initial release
Revision 1.1
Manual Version
14/07/2022 - initial release
12/08/2022
module width
10 HP (50.8 mm)
module height
3 U (128.5 mm)
module maximum depth (incl. power cable)
40 mm
mass (module only)
145 g
mass (incl. packaging and accessories)
251 g
maximum current draw
46 mA @ +12 V
46 mA @ -12 V
front panel
2 mm anodized aluminum
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Designed & made in Belgium
Copyright © 2022 Morphor. All rights reserved.
https://www.morphor.io
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