KAHAYAN Proaudio MIDI SELECTOR 16X8 User manual

16X8 MIDI SELECTOR
16 AMPLIFIERS/ 8 SPEAKER SELECTOR
OPERATOR'S MANUAL
Version 1.0
Avd. de la Estación 4, local bajo
Zarzalejo, Madrid 28293
España
[e-mail]

2
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS…………………………………3
INTRODUCTION…………………………….……………………………..4
RECOMMENDATIONS………....…………..……………………………..5
WARNING OF SETUP…..……....…………..……………………………..6
BASIC SETUP…………………....…………..……………………………..7
ADVANCED SETUP (BUS INSERT, MIDI & TUNER)…………….……..8
Q&A……………...……………………………….………………...….……15
SPECIFICATIONS & WARRANTY.……………………………...……….16
CREDITS………………………………………………………….....…..…17

3
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions
2. Keep these instructions
3. Heed all warnings
4. Follow all instructions
5. Do not use this apparatus near water
6. Clean only with dry cloth
7. Install in accordance with the manufacturer's instructions
8. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat
9. Protect the power cord from being walked on or pinched particularly at
plugs and the point where they exit from the apparatus
10. Unplug this apparatus during lightning storms or when unused for long
periods of time
11. Refer all servicing to qualified service personnel. Servicing is required when
the apparatus has been damaged in any way, such as power-supply cord or
plug is dam- aged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped

4
INTRODUCTION
The 16x8 MIDI Amplifier/Speaker Selector is a handmade and custom system
which allows you to connect 16 amplifiers to 8 speakers, providing the
possibility of easily selecting combinations of amplifiers and speakers.
Thus avoiding waste of time and making work easier. Useful for studio
recording as well as live performance.
Thanks to the Kahayan 16x8 MIDI Selector we can select/choose any amplifier
and speaker combination with the front panel buttons, with a MIDI pedalboard
and also with your Tablet using a MIDI/Bluetooh® interface (see MIDI chapter).
That means, if everything is connected correctly and our recommendations are
followed, you can link the amplifier that you want with the speaker that you
choose in many modes.
For more information visit: www.kahayan.es

5
RECOMMENDATIONS
Listed below are the most important recommendations for the use of the
16x8 Selector:
1- To avoid any equipment failures its vital to connect to the 16x8 Selector
the following things: the instrument, the amplifier inputs, the amplifier outputs
and the speakers. The initial connection should be with the amplifiers turned
off or Stand by.
2- Once everything has been connected with cables with soldered
connectors you can use the 16x8 MIDI Selector with all the amplifiers
permanently switched on. Its not neccesary to use the Stand By mode each
time that you want to change the amplifier.
3- In the case where some speaker outputs are not being used, be carefull
not to select them to avoid the amplifiers functioning without being charged.
4- This Selector contains an input mute system and phantom charge for the
amplifiers which have not been selected.

6
WARNING OF SETUP
Install in accordance with the manufacturer's instructions/manual because a
wrong setup could damage any unit of the setup including the selector:
Approved setup examples for 1 Amp/Spk:
Non-approved setup examples for 1 Amp/Spk:
For any alternative setup please contact us: www.kahayan.es
SIMPLE MODE
FULL MODE
Jack instrument cable
Jack speaker power cable
1
COMBO
SPEAKER
HEAD
SPEAKER
HEAD
1
SPEAKER
HEAD
NOTE: before unplug your guitar from
frontal selector panel input, mute
selector on pedal rig/frontal
button
1
1
1
1
1
1
1
1
2
NOTE: In the case where one or some speaker outputs are
not being used, be careful not to select them to avoid the
amplifiers functioning without being charged.

7
BASIC SET UP
The following diagram explains how to connect the equipment:
*You can use all the kind of Amplifiers: Head or Combo (the Amp Power part)
8X SPEAKER
Jack instrument Cable
Jack charge/speaker power Cable
16 X AMPLIFIERS*
AMP Outputs
Inputs
SPK Inputs

8
ADVANCED SETUP
AMP BUS INSERT:
The 18x8 MIDI Selector allows you to insert an Amp Attenuator or a Speaker
Simulator. In this way, all the Amps and Speakers connected to the Selector
will be working thru this attenuator or speaker simulator. This insert opens
the bus amp and is located electronically in between amp power inputs and
speaker outputs of the Selector. The use of modern Speaker Simulator gives
you an extra analog or digital output to a DAW or other applications.
IMPORTANT NOTE: Before connect any attenuator unit all the Amps and
Selector must be turned off. The insert send and return must be properly
connected before turn on any amp. If not, the Selector may be damaged
internally. And also if the attenuator / speaker simulator load is erroneous or
damaged, the Selector may suffer internal damage.
MUTED TUNER OUTPUT:
The 16x8 MIDI Selector allows you to connect an external Tuner using the
Jack Output in the front panel. This Output only Works when you press the
MUTE TUNER switch.This is a useful mode to have a more clean pedal rig
routing. Also you can use this outuput to other functions: For example to
connect in cascade a second selector unit, when you have a lot of Amps.
Jack charge/speaker Cable
AMP ATTENUATOR/
SPEAKER SIMULATOR

9
MIDI INPUT/THRU:
The 16x8 MIDI Selector can be controlled by MIDI data. For this function you
can use a MIDI Pedalboard or a MIDI/Bluetooh® interface (not included). Also
the unit incorporates a MIDI thru output.
1-MIDI PEDALBOARD: Using a Pedalboard allows to control the 16x8 MIDI
Selector and also many options for Live and studio aplicattions: Recall and
multi FX setups.
MIDI Cable
MIDI PEDALBOAD

10
2-MIDI/BLUETOOH® INTERFACE: When you connect a MIDI/Bluetooh®
interface at the rear of the Selector, the world of the control by Tablets and
Smartphones opens. This Mean that you can use any MIDI app.
We don´t recommend any MIDI app in special but here you have an example:
Step1: Connect your MIDI/Bluetooh® interface, in this case the M.1 Quiccosound®.
Step 2: Then download and install the Quiccosound® app just to control the Mi.1:
Step 3: Download and install any MIDI app to control the 16x8 MIDI selector. In this
case, the Stompwatch® app:
Mi.1 INTERFACE

11
3-MIDI LIST:
By default the 16x8 Selector is programmed to work in the MIDI channel 1. In
this channel you have all this function list:
NOTE: Because the maximum of MIDI order is 128 (0 to 127), the MIDI
program list is:
MIDI$PROGRAM$
SELECTS$
Program'Change'1'
Mute/tuner'out'
Program'Change'2'
Amplifier'1'
Program'Change'3'
Amplifier'2'
Program'Change'4'
Amplifier'3'
Program'Change'5'
Amplifier'4'
Program'Change'6'
Amplifier'5'
Program'Change'7'
Amplifier'6'
Program'Change'8'
Amplifier'7'
Program'Change'9'
Amplifier'8'
Program'Change'10'
Amplifier'9'
Program'Change'11'
Amplifier'10'
Program'Change'12'
Amplifier'11'
Program'Change'13'
Amplifier'12'
Program'Change'14'
Amplifier'13'
Program'Change'15'
Amplifier'14'
Program'Change'16'
Amplifier'15'
Program'Change'17'
Amplifier'16'
Program'Change'18'
Speaker''1'
Program'Change'19'
Speaker''2'
Program'Change'20'
Speaker''3'
Program'Change'21'
Speaker''4'
Program'Change'22'
Speaker''5'
Program'Change'23'
Speaker''6'
Program'Change'24'
Speaker''7'
Program'Change'25'
Speaker''8'
Program'Change'26'
Amplifier'1'&'Speaker'1'
Program'Change'27'
Amplifier'1'&'Speaker'2'
Program'Change'28'
Amplifier'1'&'Speaker'3'
Program'Change'29'
Amplifier'1'&'Speaker'4'
Program'Change'30'
Amplifier'1'&'Speaker'5'
Program'Change'31'
Amplifier'1'&'Speaker'6'
Program'Change'32'
Amplifier'1'&'Speaker'7'
Program'Change'33'
Amplifier'1'&'Speaker'8'
Program'Change'34'
Amplifier'2'&'Speaker'1'
Program'Change'35'
Amplifier'2'&'Speaker'2'
Program'Change'36'
Amplifier'2'&'Speaker'3'

12
Program'Change'37'
Amplifier'2'&'Speaker'4'
Program'Change'38'
Amplifier'2'&'Speaker'5'
Program'Change'39'
Amplifier'2'&'Speaker'6'
Program'Change'40'
Amplifier'2'&'Speaker'7'
Program'Change'41'
Amplifier'2'&'Speaker'8'
Program'Change'42'
Amplifier'3'&'Speaker'1'
Program'Change'43'
Amplifier'3'&'Speaker'2'
Program'Change'44'
Amplifier'3'&'Speaker'3'
Program'Change'45'
Amplifier'3'&'Speaker'4'
Program'Change'46'
Amplifier'3'&'Speaker'5'
Program'Change'47'
Amplifier'3'&'Speaker'6'
Program'Change'48'
Amplifier'3'&'Speaker'7'
Program'Change'49'
Amplifier'3'&'Speaker'8'
Program'Change'50'
Amplifier'4'&'Speaker'1'
Program'Change'51'
Amplifier'4'&'Speaker'2'
Program'Change'52'
Amplifier'4'&'Speaker'3'
Program'Change'53'
Amplifier'4'&'Speaker'4'
Program'Change'54'
Amplifier'4'&'Speaker'5'
Program'Change'55'
Amplifier'4'&'Speaker'6'
Program'Change'56'
Amplifier'4'&'Speaker'7'
Program'Change'57'
Amplifier'4'&'Speaker'8'
Program'Change'58'
Amplifier'5'&'Speaker'1'
Program'Change'59'
Amplifier'5'&'Speaker'2'
Program'Change'60'
Amplifier'5'&'Speaker'3'
Program'Change'61'
Amplifier'5'&'Speaker'4'
Program'Change'62'
Amplifier'5'&'Speaker'5'
Program'Change'63'
Amplifier'5'&'Speaker'6'
Program'Change'64'
Amplifier'5'&'Speaker'7'
Program'Change'65'
Amplifier'5'&'Speaker'8'
Program'Change'66'
Amplifier'6'&'Speaker'1'
Program'Change'67'
Amplifier'6'&'Speaker'2'
Program'Change'68'
Amplifier'6'&'Speaker'3'
Program'Change'69'
Amplifier'6'&'Speaker'4'
Program'Change'70'
Amplifier'6'&'Speaker'5'
Program'Change'71'
Amplifier'6'&'Speaker'6'
Program'Change'72'
Amplifier'6'&'Speaker'7'
Program'Change'73'
Amplifier'6'&'Speaker'8'
Program'Change'74'
Amplifier'7'&'Speaker'1'
Program'Change'75'
Amplifier'7'&'Speaker'2'
Program'Change'76'
Amplifier'7'&'Speaker'3'
Program'Change'77'
Amplifier'7'&'Speaker'4'
Program'Change'78'
Amplifier'7'&'Speaker'5'
Program'Change'79'
Amplifier'7'&'Speaker'6'
Program'Change'80'
Amplifier'7'&'Speaker'7'

13
Program'Change'81'
Amplifier'7'&'Speaker'8'
Program'Change'82'
Amplifier'8'&'Speaker'1'
Program'Change'83'
Amplifier'8'&'Speaker'2'
Program'Change'84'
Amplifier'8'&'Speaker'3'
Program'Change'85'
Amplifier'8'&'Speaker'4'
Program'Change'86'
Amplifier'8'&'Speaker'5'
Program'Change'87'
Amplifier'8'&'Speaker'6'
Program'Change'88'
Amplifier'8'&'Speaker'7'
Program'Change'89'
Amplifier'8'&'Speaker'8'
Program'Change'90'
Amplifier'9'&'Speaker'1'
Program'Change'91'
Amplifier'9'&'Speaker'2'
Program'Change'92'
Amplifier'9'&'Speaker'3'
Program'Change'93'
Amplifier'9'&'Speaker'4'
Program'Change'94'
Amplifier'9'&'Speaker'5'
Program'Change'95'
Amplifier'9'&'Speaker'6'
Program'Change'96'
Amplifier'9'&'Speaker'7'
Program'Change'97'
Amplifier'9'&'Speaker'8'
Program'Change'98'
Amplifier'10'&'Speaker'1'
Program'Change'99'
Amplifier'10'&'Speaker'2'
Program'Change'100'
Amplifier'10'&'Speaker'3'
Program'Change'101'
Amplifier'10'&'Speaker'4'
Program'Change'102'
Amplifier'10'&'Speaker'5'
Program'Change'103'
Amplifier'10'&'Speaker'6'
Program'Change'104'
Amplifier'10'&'Speaker'7'
Program'Change'105'
Amplifier'10'&'Speaker'8'
Program'Change'106'
Amplifier'11'&'Speaker'1'
Program'Change'107'
Amplifier'11'&'Speaker'2'
Program'Change'108'
Amplifier'11'&'Speaker'3'
Program'Change'109'
Amplifier'11'&'Speaker'4'
Program'Change'110'
Amplifier'11'&'Speaker'5'
Program'Change'111'
Amplifier'11'&'Speaker'6'
Program'Change'112'
Amplifier'11'&'Speaker'7'
Program'Change'113'
Amplifier'11'&'Speaker'8'
Program'Change'114'
Amplifier'12'&'Speaker'1'
Program'Change'115'
Amplifier'12'&'Speaker'2'
Program'Change'116'
Amplifier'12'&'Speaker'3'
Program'Change'117'
Amplifier'12'&'Speaker'4'
Program'Change'118'
Amplifier'12'&'Speaker'5'
Program'Change'119'
Amplifier'12'&'Speaker'6'
Program'Change'120'
Amplifier'12'&'Speaker'7'
Program'Change'121'
Amplifier'12'&'Speaker'8'
Program'Change'122'
Amplifier'13'&'Speaker'1'
Program'Change'123'
Amplifier'13'&'Speaker'2'
Program'Change'124'
Amplifier'13'&'Speaker'3'

14
Program'Change'125'
Amplifier'13'&'Speaker'4'
Program'Change'126'
Amplifier'13'&'Speaker'5'
Program'Change'127'
Amplifier'13'&'Speaker'6'
Program'Change'128'
Amplifier'13'&'Speaker'7'

15
Q&A
Listed below are the most typical questions that we have received from the
users of the 16x8 Selector:
- Does the selector have an input buffer?
No, this unit is a transparent amp/speaker selector, with no active electronics
components in the signal path, just a very short high quality cable in the
instrument input.
- What impedance 16x8 selector uses? Can the 16x8 selector adjust the
amp impedance?
This is like a 'patchbay', you connect your amp with the speaker you want, we
don´t make adaptations. For example if you have an 8 ohm amp and you have
2 cabinets (16 and 8 ohm), you have to choose the 'correct' speaker.
- What guitar cable do you recommend? We don´t have a preferable brand
but the cables must have good quality and good soldering. We have
detected that a configuration with no quality cables changes the sound, then
users tends to think there is a problem in our 16x8 selector. Then, changes the
cables and recovers the definition and sound quality.
-Can I put all my amp heads in ’tower’ configuration (One above the
other)? You can configure all your amp heads in the way you want but the
users must take attention of the position of the power transformer (connected
to the power grid) of the amps. Some amp brands put the power transformer in
the left side of the head, and others in the right side. If you combine this two
cases amp, probably the induction of this power transformer will affect to the
second amp and you could have some noise. We recommend put the same
head amps (transformer position) in one 'tower' and the others in a second
'tower'.
- If I turn off the 16x8 selector and amps are on, is there a problem? No,
because all the amps go directly to the internal phantom load in that case, and
all your amps will be loaded.

16
SPECIFICATIONS
•16 Amplifiers and 8 Speakers Selector
•1 Jack instrument input and 1 Jack Tuner output (front panel)
•16 Jack instrument outputs to Amplifiers
•16 Jack charge (speaker) inputs from Amplifiers
•8 Jack charge (speaker) outputs to Speaker
•1 Jack charge output and 1 Jack charge input for Insert in the Amp-Bus
•1 MIDI output and 1 MIDI thru
•Power Supply: 220/110V and 50/60 Hz. Consumption: 6W.
•Weight: 5Kg
•Max. Watt input from Amplifiers: 180W
•Dimensions: 84x435x285 mm (Height/Width/Depth)
•The manufacturer reserves the right to change the technical
specification of the product without prior notice.
Note: To change the voltage, just open the top cover and select the voltage
needed (220/110) in the internal voltage switcher in the power supply board
close to the power socket. For more info please contact us.

17
WARRANTY
These products are guaranteed for a period of two years from the date of
shipment to the end user for countries of the European Union. For other
countries, please refer to the law in effect.
During the warranty period Kahayan Pro-Audio will, at their discretion, either
repair or replace products which prove to be defective, provided that the
product is returned to an authorised Kahayan service facility. The warranty will
not cover shipping the unit back to the Kahayan service facility, unless the
customer determines otherwise with his dealer/distributor.!
Defects caused by unauthorised modifications, accident, negligence or any
misuse are not covered by this warranty. For further information please contact
your dealer or the distributor in your country.

18
NOTICE OF COPYRIGHT AND OWNERSHIP
All designs, circuit board artwork, front panel artwork, text contained herein
and therein, and all other intellectual material is the sole property of Pablo
Kahayan from Kahayan Audio. Unauthorized use, distribution, reproduction,
etc. is strictly prohibited. Kahayan intellectual property is protected by
international copyright laws. Violators will be prosecuted to the fullest extent of
all applicable laws.
Transfer of ownership of this unit neither confers nor implies any transfer of
ownership of the intellectual property, proprietary design, etc. contained
herein.
CREDITS
Concept: Pablo Kahayan
Written by: Pablo Kahayan and Luis del Toro
Edited by: Luis del Toro and Pablo Kahayan