RemoteMix 3.m
Phone LIne Hybrid and Telephone Handset
Interface for Remote Broadcasts
Users Guide
JK Audio, Inc.
2 3
Operating
or connect to the Fax/Modem adapter on a cellular
telephone,
or disconnect the handset on the existing telephone and
plug the coily cord into the PBX handset interface jack on
RemoteMix 3.m.
3. Turn on the power switch, flip the "Phone Line" switch to
"Dial/Talk" and dial your call. You are now ready to
broadcast or record a telephone interview.
Cellular Telephones
RemoteMix 3.m was designed to work well with the data interface
(fax / modem adapter) for your cellular telephone, available
through your cellular dealer. These adapters turn your cellular
telephone into an RJ11 equivalent jack which replaces the wall jack
in this picture.
Handset Interface
If you cannot get to an analog phone line or if the phone system is a
digital or analog PBX, ISDN, or a key telephone system, You can
use the built-in handset interface. Simply disconnect the handset
from the coily cord and plug the cord into the RemoteMix 3.m PBX
Handset Interface Jack. Now select the handset type on the 3.m
position switch. Trial and error works faster than a chart of handset
types, but this basic description may help.
Switch Position Handset Microphone Type
A Electret
B Dynamic
C Carbon
VU Meter
The VU meter shows the mix of both microphones and the tape
signal going out over the phone line or handset interface.
Tape recorder or
audio equipment
input or output,
RCA or XLR
Microphones, 2
XLR jacks
Headphones or small
speaker, 2 jacks 1/4”
stereo or mono
to RJ-11
wall jack
Connections
RemoteMix 3.m is a professional audio mixer designed to work on
any standard analog telephone line or simply unplug the handset on
most PBX or digital telephones and connect to the built-in universal
handset interface. It can also connect to many cellular telephones
using a fax/modem adapter available from your cellular telephone
manufacturer. Simply plug your audio equipment into RemoteMix 3.m
and connect to a phone line. You can now put on headphones, plug
in a microphone, and you are ready to broadcast the game or talk up
a taped interview. The RCA type jacks on RemoteMix 3.m are
equivalent to the jacks found on most home tape recorders, CD
players, and receiver/amplifiers. The balanced line XLR output jack
provides a high quality connection to mixers and professional tape
gear. The adjustable hybrid circuit provides control over the mix of
transmit and receive audio at the output jacks.
1. Connect your audio equipment, microphone, and
headphones to the input and output jacks on
RemoteMix 3.m.
2. Connect the jack marked "Phone Line" to any standard
analog telephone line,
Operating
or connect to the Fax/Modem adapter on a cellular
telephone,
or disconnect the handset on the existing telephone and
plug the coily cord into the PBX handset interface jack on
RemoteMix 3.m.
3. Turn on the power switch, flip the "Phone Line" switch to
"Dial/Talk" and dial your call. You are now ready to
broadcast or record a telephone interview.
Cellular Telephones
RemoteMix 3.m was designed to work well with the data interface
(fax / modem adapter) for your cellular telephone, available
through your cellular dealer. These adapters turn your cellular
telephone into an RJ11 equivalent jack which replaces the wall jack
in this picture.
Handset Interface
If you cannot get to an analog phone line or if the phone system is a
digital or analog PBX, ISDN, or a key telephone system, You can
use the built-in handset interface. Simply disconnect the handset
from the coily cord and plug the cord into the RemoteMix 3.m PBX
Handset Interface Jack. Now select the handset type on the 3.m
position switch. Trial and error works faster than a chart of handset
types, but this basic description may help.
Switch Position Handset Microphone Type
A Electret
B Dynamic
C Carbon
VU Meter
The VU meter shows the mix of both microphones and the tape
signal going out over the phone line or handset interface.
4 5
Operating (Continued)
Send Side (To Phone Line)
There are separate volume controls for the two microphone inputs
and the line input (T o Phone Line) jack. Y ou can use all three inputs
at the same time. Mic 1 also has a Mic/Line selector switch which
lowers the gain on the Mic 1 XLR jack by 30 dB to allow a balanced
line level input.
Receive Side (From Phone Line)
The receive side has separate controls for headphone output level
and mix audio output level. The Line Out control adjusts the signal
going out of the RCA and XLR jacks. The RCA jack contains a mix
of both sides of the telephone call, while the XLR is a clean mic mix.
Headphones
The built-in headphone amplifier is strong enough to power two
pair of headphones or a small desktop speaker. The left and right
channels contain the same mono signal, but are powered by
separate amplifier channels. These jacks will drive either two 1/4"
stereo plugs or two 1/4" mono plugs.
Talkback Feature
A built in speaker lets you monitor the phone line during call setup
and station breaks. The monitor speaker volume is controlled by
the headphone volume control and has an additional on / off switch.
An internal push-to-talk microphone also helps when setting up
your call. The speaker switches off when the microphone button is
pushed on to prevent feedback.
Ringer
RemoteMix 3.m has an internal ringer for incoming calls. This can be
turned off using the switch on the side of the unit.
Operating (Continued)
Handset Jack
The handset jack on the right side of RemoteMix 3.m allows you to
plug in a telephone handset and quickly set up a call before you set
up your microphones and headphones. The handset microphone
volume is adjusted using the Line In knob. The earpiece volume is
adjusted using the Headphone level knob. All telephone handsets
are different, so if yours is not compatible, try an AT&T, Sony, or
Radio Shack residential phone handset.
Keypad
The telephone keypad is for tone or pulse dialing. Y ou may use the
keypad at anytime during a call but keep in mind that both transmit
and receive audio are muted during a keypress.
Tone / Pulse Dialing
RemoteMix 3.m is equipped with a switch to select tone (DTMF)
dialing or pulse dialing. The switch is located underneath the
battery door. With the switch towards the volume control knobs,
the unit is in the “pulse” mode. When in “pulse” mode the “*” key will
set the unit to transmit digits as tones regardless of the switch
position. T o return to pulse dialing turn the keypad off and back on.
Keypad ON / OFF
This switch disables the DTMF keypad to prevent tones from being
blasted down the phone line during a broadcast.
Phone Line Switch
This switch acts as the switch-hook for the telephone line. The Hang
Up position is the normal on-hook position when you are not using
the line or you are waiting for a call. When you want to place a call,
or when a call comes in, switch to the Dial/Talk position. Keep this
switch in the Hang Up position if you are using the PBX Handset
Interface.
Operating (Continued)
Handset Jack
The handset jack on the right side of RemoteMix 3.m allows you to
plug in a telephone handset and quickly set up a call before you set
up your microphones and headphones. The handset microphone
volume is adjusted using the Line In knob. The earpiece volume is
adjusted using the Headphone level knob. All telephone handsets
are different, so if yours is not compatible, try an AT&T, Sony, or
Radio Shack residential phone handset.
Keypad
The telephone keypad is for tone or pulse dialing. Y ou may use the
keypad at anytime during a call but keep in mind that both transmit
and receive audio are muted during a keypress.
Tone / Pulse Dialing
RemoteMix 3.m is equipped with a switch to select tone (DTMF)
dialing or pulse dialing. The switch is located underneath the
battery door. With the switch towards the volume control knobs,
the unit is in the “pulse” mode. When in “pulse” mode the “*” key will
set the unit to transmit digits as tones regardless of the switch
position. T o return to pulse dialing turn the keypad off and back on.
Keypad ON / OFF
This switch disables the DTMF keypad to prevent tones from being
blasted down the phone line during a broadcast.
Phone Line Switch
This switch acts as the switch-hook for the telephone line. The Hang
Up position is the normal on-hook position when you are not using
the line or you are waiting for a call. When you want to place a call,
or when a call comes in, switch to the Dial/Talk position. Keep this
switch in the Hang Up position if you are using the PBX Handset
Interface.
6 7
Operating (continued)
Power
RemoteMix 3.m is powered by two 9 volt alkaline batteries located
under the cover on the bottom of the unit. Under normal use, you
should get at least 30 hours of continuous use from a fresh set of
batteries.
To test the batteries, simply press the Battery Test button on the
front of the unit. If the LED lights, the batteries are still good. The
unit may still function if the LED does not light, but there will be
significant audio distortion and a loss of level as the batteries
continue to discharge.
The batteries are wired in parallel so it is important to replace both
at the same time with identical batteries. If two fresh batteries are
not available, it is better to run using only one good battery. The
two battery fixtures are wired in parallel so it does not matter which
one gets the single battery.
We also provide a high quality, regulated AC to DC adapter to
power RemoteMix 3.m when AC power is available. Simply plug it
into the back of RemoteMix 3.m and plug the transformer into a 110
VAC wall outlet. When the power connector is inserted into the
jack, the batteries are bypassed. The AC adapter does not charge
the batteries.
Hybrid Null Adjustment (optional)
The receive side of RemoteMix 3.m has a hidden fine tuning control
which is adjusted by inserting a screwdriver into the back of the unit
just below the words Null Adj. and turning left or right. This is a tenturn potentiometer. This adjustment controls the level of transmit
audio that appears on the receive audio jacks. The null circuit
matches the characteristics of RemoteMix 3.m with the
characteristics of the telephone line. Although much of the transmit
audio can be removed, this is not the equivalent of a mix-minus
output.
Hybrid Null Adjustment (optional)
The amount of transmit/receive isolation will depend on the quality
of the telephone line. This circuit is factory set to give a good mix
on an average telephone line, and is therefore perfect for recording
both sides of a telephone interview.
To find the absolute null for any telephone line, follow this
procedure:
1. Place a call to a quiet location.
2. Send a signal down the line at moderate levels, this can be
a prerecorded tape of music or speech, or preferably a test signal.
3. Connect the Receive line output to a meter or scope, or
listen to the receive signal over the headphones. Be sure to turn up
the From Phone or Headphones volume control depending on
which method you are using to monitor the receive signal.
4. On the back of RemoteMix 3.m, below the words Null Adj.,
there is a hole for a small flat blade screwdriver. This is a 10-turn
potentiometer to allow for very sensitive adjustments. Try to
remember the position of the blade, and the number of turns you
are making as you first adjust clockwise, and then back to the
original position, and then counterclockwise.
The goal is to adjust the null signal until the receive signal
contains a minimum amount of transmit audio. However, if you
want a good mix of transmit and receive signals, you must have
someone on the far end speak or send audio down the line as you
adjust for the proper balance.
To Reset Null to Factory Setting:
Disconnect from phone line, switch the Phone Line switch to On
Hook, and the set the null to minimum. This presets the null to an
average phone line impedance.
Hybrid Null Adjustment (optional)
The amount of transmit/receive isolation will depend on the quality
of the telephone line. This circuit is factory set to give a good mix
on an average telephone line, and is therefore perfect for recording
both sides of a telephone interview.
To find the absolute null for any telephone line, follow this
procedure:
1. Place a call to a quiet location.
2. Send a signal down the line at moderate levels, this can be
a prerecorded tape of music or speech, or preferably a test signal.
3. Connect the Receive line output to a meter or scope, or
listen to the receive signal over the headphones. Be sure to turn up
the From Phone or Headphones volume control depending on
which method you are using to monitor the receive signal.
4. On the back of RemoteMix 3.m, below the words Null Adj.,
there is a hole for a small flat blade screwdriver. This is a 10-turn
potentiometer to allow for very sensitive adjustments. Try to
remember the position of the blade, and the number of turns you
are making as you first adjust clockwise, and then back to the
original position, and then counterclockwise.
The goal is to adjust the null signal until the receive signal
contains a minimum amount of transmit audio. However, if you
want a good mix of transmit and receive signals, you must have
someone on the far end speak or send audio down the line as you
adjust for the proper balance.
To Reset Null to Factory Setting:
Disconnect from phone line, switch the Phone Line switch to On
Hook, and the set the null to minimum. This presets the null to an
average phone line impedance.
8 9
Specifications
Inputs:
Line: Connector RCA phono Jack
Input Impedance 20 k ohms
Level 250 mV RMS
(-10 dBm nom.)
Microphone: Connector Female XLR
Input Impedance 1000 ohms
Mic / Line: Line = -30dB from microphone gain.
Handset: Modular 4pin/4wire handset jack
Electret / dynamic microphone bias.
Outputs:
Line: Connector RCA phono Jack
Output Impedance 50 ohms
Level 250 mV RMS
(+5 dBm max.)
Balanced: Connector Male XLR
Output Impedance 200 ohms
Level 500 mV RMS
(+12 dBm max.)
Headphone: Connector 1/4"stereo jacks
Output Impedance 8 ohms
Power 1/2 watt
Phone Line: Connector RJ11C
Isolation 1500 volts
Ringer (REN)1.2B
Handset Interface: Switchable electret, dynamic, carbon
handset microphone bias types.
Keypad: DTMF (Dual T one Multi-Frequency)
Pulse Dialing
FCC Registration
Your new JK Audio product has been registered with the Federal
Communications Commission (FCC). This product complies with
the standards in Part 68 of the FCC rules.
1. Connection and use with the nationwide
telephone network
The FCC requires that you connect this telephone
equipment to the national telephone network through a
USOC RJ-11C modular telephone jack.
This equipment may not be used with Party Line Service or
Coin T elephone Lines.
This equipment is hearing aid compatible.
2. Information for the telephone company
Upon request from your local telephone company, you are
required to provide the following information:
a) The "line" to which you will connect the telephone
equipment (that is, your telephone number), and
b) The telephone equipment's FCC registration number.
This can be found on the bottom of your telephone
equipment, and,
c) the ringer equivalence number (REN) for this equipment.
The REN is used to determine the quantity of devices which
will be connected to the telephone line. Excessive RENs on the
telephone line may result in the devices not ringing in response to an
incoming call. In most, but not all areas, the sum of the RENs should
not exceed 5.0. To be certain of the number of devices that may be
connected to the line, as determined by the total RENs, contact the
local telephone company.
FCC Registration
Your new JK Audio product has been registered with the Federal
Communications Commission (FCC). This product complies with
the standards in Part 68 of the FCC rules.
1. Connection and use with the nationwide
telephone network
The FCC requires that you connect this telephone
equipment to the national telephone network through a
USOC RJ-11C modular telephone jack.
This equipment may not be used with Party Line Service or
Coin T elephone Lines.
This equipment is hearing aid compatible.
2. Information for the telephone company
Upon request from your local telephone company, you are
required to provide the following information:
a) The "line" to which you will connect the telephone
equipment (that is, your telephone number), and
b) The telephone equipment's FCC registration number.
This can be found on the bottom of your telephone
equipment, and,
c) the ringer equivalence number (REN) for this equipment.
The REN is used to determine the quantity of devices which
will be connected to the telephone line. Excessive RENs on the
telephone line may result in the devices not ringing in response to an
incoming call. In most, but not all areas, the sum of the RENs should
not exceed 5.0. To be certain of the number of devices that may be
connected to the line, as determined by the total RENs, contact the
local telephone company.
10 11
FCC Registration (continued)
3. Repair Instructions
If it is determined that your telephone equipment is
malfunctioning, the FCC requires that it not be used and
that it be unplugged from the modular outlet until the
problem has been corrected. Repairs to this telephone
equipment can only be made by the manufacturer or its
authorized agents or by others who may be authorized by
the FCC. For repair procedures, follow the instructions
outlined under the warranty section of the manual.
4. Rights of the telephone company
If telephone equipment is causing harm to the network, the
telephone company may temporarily discontinue your
telephone service. If possible, they'll notify you before they
interrupt service. If advanced notice isn't practical, you'll be
notified as soon as possible. You'll be given the opportunity
to correct the problem, and you'll be informed of your right
to file a complaint with the FCC.
Your telephone company may make changes in its facilities,
equipment, operations or procedures that could affect the proper
functioning of your JK Audio product. If such changes are planned,
you'll be notified by your telephone company.
FCC Part 15 Compliance
This equipment has been tested and found to comply with the limits
for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the
interference at his own expense.
Changes or modifications not expressly approved by JK Audio can
void the user's authority to operate the equipment.
FCC Part 15 Compliance
This equipment has been tested and found to comply with the limits
for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the
interference at his own expense.
Changes or modifications not expressly approved by JK Audio can
void the user's authority to operate the equipment.
2/00
JK Audio Inc.
2701 N. 45th Road, Sandwich, IL 60548 (815) 786-2929
Warranty
RemoteMix 3.m is covered by a 2 year warranty to be free from
defective workmanship and materials. In the event that the
RemoteMix 3.m needs repair, you must call us to get an
authorization, and then carefully pack and ship it to us. You will
pay for shipping to us and we will pay for return back to you,
UPS ground. No free repairs will be made if the defect was
caused by misuse, weather conditions, or other cause, except
for defective workmanship or materials. THERE ARE NO
EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND
BEYOND THE WARRANTY HERE MADE.
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