Samson Headphones QE User Guide

A E R O B I C S A N D V O C A L  
H E A D S E T M I C R O P H O N E  
P M 4 P H A N T O M P O W E R A D A P T O R  
O W N E R S M A N U A L  
Q E A E R O B IC S MIC  
Q V VO C A L MIC  
P M4 P h a n t o m  
p o w e r a d a p t o r  
®
 
C O N T E N T S  
INTRODUCTION  
FEATURES  
4
6
USING YOUR QE/QV HEADSET  
SPECIFICATIONS  
8
14  
3
 
I N T R O D U C T I O N  
Thank you for purchasing the Samson QE/QV Headset Microphone with the  
PM4 phantom power adaptor. These professional hands-free microphones are  
specially designed for performing musicians and dancers, sportscasters and  
aerobics instructors (the QE model is water resistant and is optimized for aero-  
bics use and high-humidity environments). Manufactured with extreme care and  
the highest quality components, they deliver an exceptionally clear, articulate  
sound, with superior rejection of background noise. The QE/QV Headset along  
with the PM4 phantom power adaptor are well-suited for any vocal amplifying  
situation.  
In this manual, youll find a more detailed description of the features of your  
QE/QV Headset, as well as instructions for using your QE/QV Headset with the  
PM4 phantom power adaptor, and complete specifications. Youll also find a war-  
ranty card encloseddont forget to fill it out and mail it in! This will enable you  
to receive online technical support and will allow us to send you updated infor-  
mation about other Samson products in the future.  
4
 
I N T R O D U C T I O N  
Should your QE/QV Headset or PM4 ever require servicing, a Return  
Authorization number (RA) must be obtained before shipping your unit to  
Samson. Without this number, the unit will not be accepted. Please call Samson  
at 1-800-3SAMSON (1-800-372-6766) for a Return Authorization number prior  
to shipping your unit. Please retain the original packing material and, if possible,  
return the QE/QV Headset in its original carton and packing materials.  
Samson Technologies Corp.  
575 Underhill Blvd.  
P.O. Box 9031  
Syosset, NY 11791-9031  
Phone: 1-800-3-SAMSON (1-800-372-6766)  
Fax: 516-364-3888  
5
 
F E A T U R E S  
The Samson QE/QV Headset utilizes state-of-the-art headset microphone tech-  
nology and is engineered to the finest detail. Here are some of its main features:  
Lightweight, low visibility design for unobtrusive use.  
High quality electret condenser element delivers high output and exceptional  
sound quality.  
Full range frequency response for clear, crisp audio. The QV Headset is vir-  
tually flat to 10kHz, while the QE Headset utilizes a midrange presence”  
peak for optimum reproduction of speech.  
Tight hypercardioid polar pattern (in the QV) and bi-directional noise cancel-  
lation design (in the QE) reduces background noise, minimizes feedback  
problems and effectively rejects signals not originating directly in front of the  
mic capsule.  
QE Headset includes internal radio frequency (RF) suppression, making it  
suitable for use in high-RF urban areas.  
6
 
F E A T U R E S  
Microphones are molded to high quality gooseneck booms constructed of  
brass over stainless steel wire with matt black polyurethane covering.  
Compliant molding reduces microphone handling noise, and the booms  
bend smoothly, hold their shape and are rated to withstand over a thousand  
90° bends without degrading.  
Both the QV and QE Headsets are moisture protected, and the QE is water  
resistant, making it the microphone of choice for aerobics instruction or in  
other high-humidity environments.  
Both the QV and QE Headset microphones terminate with a P3 connector  
which plugs into to the PM4 phantom power adaptor.  
The PM4 phantom power adaptor is used to supply the QE/QV microphone  
with phantom power, while transforming the impedance from high to low to  
compensate for longer cable runs.  
7
 
U S I N G Y O U R Q E / Q V H E A D S E T  
As shown in the illustrations below, the correct way to wear your QE/QV  
Headset is over the ears, as you would wear a pair of eyeglasses.  
The QE/QV Headset is specially designed to be used up close, so be sure to  
adjust the microphone to be directly in front of your lips, as shown in these illustra-  
tions. Although it generates significantly less handling noise than most other head-  
sets (due to its compliant molding), it should be left in one position during use. To  
avoid feedback problems, take care not to cover the mic capsule with your hand.  
8
 
U S I N G Y O U R Q E / Q V H E A D S E T  
Slide the foam windscreen over the microphone ,as shown in the illustration on  
the previous page, to eliminate wind noise.  
The PM4 phantom power adaptor with its special interface, enables a mixer to  
provide phantom power to condenser, piezo or electric microphones. The PM4  
converts high impedance (50 k 10meg ohm) to low impedance (600 ohms)  
allowing long cable runs without noise and gain loss.  
Connect the P3 plug from your QE/QV Headset into the locking input of the  
PM4. Connect an XLR cable from the PM4 to the input of your mixer. Clip the  
PM4 to your belt loop or some other part of your clothing, as in the photos on  
the box cover, as not to cause strain by pulling on the wire coming from the  
headset. You should also select a thin, lightweight XLR cable for this interface.  
9
 
U S I N G Y O U R Q E / Q V H E A D S E T  
Every microphone has a characteristic polar pattern that determines how well  
it accepts or rejects signals coming from various areas around the microphone.  
A type of design which is particularly good at rejecting background noise is the  
bi-directional polar pattern uti-  
lized by the QE Headset, as  
shown in the illustration on the  
0°  
-10dB  
left.  
-20dB  
90°  
270°  
QE Headset Polar Pattern  
(measured at 1 kHz)  
180°  
10  
 
U S I N G Y O U R Q E / Q V H E A D S E T  
Omnidirectional mics accept all signals regardless of wherever those signals  
originate (in front of the mic, behind it, to the side, etc.). In contrast, directional  
cardioid mics are specifically designed to accept mostly signals coming from  
directly in front, and to reject  
0°  
signals coming from behind or  
from the side. The most  
extreme variation of cardioid is  
-10dB  
the hypercardioid pattern uti-  
lized by the QV Headset (as  
-20dB  
shown in the illustration on the  
right); this yields maximum  
rejection of signal coming from  
any direction other than directly  
in front of the mic.  
90°  
270°  
QV Headset Polar Pattern  
(measured at 1 kHz)  
180°  
11  
 
U S I N G Y O U R Q E / Q V H E A D S E T  
In the QE Headset, three noise cancelling modes operate together to provide  
20 - 30 dB of noise reduction: First, the small size of the mic capsule and the  
short distance between front and rear ports reduces the sensitivity at 1 kHz to  
far field noise by 15 dB compared to the close talking response. Secondly, as  
shown in the frequency response graph below, noise at lower frequencies is  
additionally attenuated. And,  
finally, the bi-directional polar  
-55  
-60  
-65  
-35  
pattern reduces signal coming  
from a 90° angle by 20 dB  
more (and random signal by 5  
dB more) compared to signal  
originating from directly in front  
of the mic capsule.  
CLOSE TALKING (1cm)  
-40  
-45  
-70  
-75  
-50  
-55  
FAR FIELD (1m)  
Hz  
500 1000  
2000  
5000  
10000  
20000  
100  
The frequency response of  
the QV Headset (which is virtu-  
QE Frequency Response  
ally flat across the entire audible range) is shown in the illustration on the follow-  
ing page:  
12  
 
U S I N G Y O U R Q E / Q V H E A D S E T  
Because of their polar patterns, frequency response, and noise cancellation  
design, both the QV and QE Headsets excel in environments where there is a  
good deal of unwanted ambient  
soundthey deliver those sig-  
-40  
-60  
0°  
nals originating directly in front  
of the mic capsule itself while  
rejecting those that originate  
from other directions.  
-50  
-70  
-60  
-80  
The polar pattern also deter-  
mines how prone a particular  
mic is to inducing feedback.  
Feedback is that characteristic  
nasty howling sound that occurs  
125°  
200  
500 1000  
2000  
5000  
10000  
100  
QV Frequency Response  
when a mic is placed too close to a loudspeakerthe signal from the loud-  
speaker is fed into the mic, then into the loudspeaker, then into the mic, over  
and over again until an oscillating tone is generated. Because the QE/QV  
Headsets are so good at rejecting signal not coming from directly in front of the  
mic, youll find that their use greatly minimizes feedback problems.  
13  
 
S P E C I F I C A T I O N S  
QE and QV  
Generating Element:  
Polar Pattern  
QE (water-resistant):  
QV:  
Back electret condenser  
Bi-directional noise cancelling,  
Hypercardioid  
pressure gradient type  
Mounting system:  
Sensitivity  
QE:  
Adjustable headband and gooseneck  
80 mV @ 114 dB SPL  
70 mV @ 114 dB SPL  
145 dB  
QV:  
Max.SPL:  
Weight:  
1.92 oz. 54.4 grams  
14  
 
S P E C I F I C A T I O N S  
PM4 (For use with QE/QV Headset Mics)  
Frequency Response (+-0, 1.5dB): 20Hz20kHz  
Connectors  
Input:  
TA3M Switchcraft  
XLR Male (gold plated)  
12 Vdc through 48 Vdc  
Output:  
Operating Voltage:  
Impedance (@ 1kHz nominal)  
Input:  
Output:  
Input Wiring  
Pin 1:  
2kΩ  
600balanced (transformer coupled)  
GND  
Audio  
+ Phantom  
Pin 2  
Pin 3:  
Output Wiring  
Pin 1:  
GND  
Pin 2  
Hot +  
Pin 3:  
Casing:  
Cold –  
Zinc, die cast  
Stainless steel belt clip  
Dimensions  
Length:  
3.793.75mm  
Diameter:  
0.86 22mm  
15  
 
S P E C I F I C A T I O N S  
FRONT VIEW  
FRONT VIEW  
1″  
26mm  
.95″  
24mm  
FLEXIBLE GOOSENECK  
FLEXIBLE GOOSENECK  
.4/ 10mm  
.47/ 12mm  
.35/ 9mm  
.24/ 6mm  
11/ 278mm  
8.5/ 220mm  
REAR VIEW  
REAR VIEW  
FLEXIBLE CABLE  
FLEXIBLE SHIELD  
WHITE (—)  
FLEXIBLE CABLE  
SHIELD (-)  
WHITE ()  
RED (+)  
RED (+)  
QV Dimensions  
QE Dimensions  
16  
 
S P E C I F I C A T I O N S  
Q'TY  
1
3.72/ 94.5mm  
MODEL  
Q'TY  
PM-4  
DESCRIPTION  
SPECIFICATION  
TB3M  
NO  
2.84/ 72mm  
RECEPTACLE ASS'Y  
SET SCREW  
SET SCREW  
CLIP  
1
1
1
2
1
1
1
1
2
1
1
2
7
M2x2  
SCREW  
3
4
5
M2xL4(F/H)  
CLIP  
3P CONNECTOR ASS'Y  
CONNECTOR HOLDER  
CASE SCREW  
TRANS  
.875/ 22.25mm  
.75/ 19mm  
6
7
SC GOLD  
8
PCB  
9
CASE  
10  
1
2
3
4
5
6
8
9
10  
7
PM4 PHANTOM MICROPHONE ADAPTER  
FOR USE WITH QE AND QV HEADSETS  
18VDC TO 48VDC  
PM4 Mechanical  
17  
 
S P E C I F I C A T I O N S  
1
2
PATTERN  
SILK PRINT  
3
TB3M  
3
XLR3  
Trans  
3
ORN C5  
R4  
D1  
R2  
RED  
C4  
1
2
Trans  
R1  
Q1  
D2  
WHT  
TB3M  
C3  
4
Trans  
R3  
C2  
C1  
2
Trans  
PM4  
BLK  
1
TB3M  
1
XLR3  
TB3M  
XLR3  
Trans  
5
YEL  
RED  
BLK  
Trans  
2
2
1
1
2
3
4
3
3
1
GRN  
BLU  
5
PM4 Circuit board  
18  
 
Samson Technologies Corp.  
575 Underhill Blvd.  
P.O. Box 9031  
Syosset, NY 11791-9031  
Phone: 1-800-3-SAMSON (1-800-372-6766)  
Fax: 1-516-364-3888  
 

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