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Specifications
Frequency Response
20 to 20,000 Hz
Total Harmonic Distortion
< .1% (measured at –10 dBu out)
Channel Separation
35 dB (minimum)
Signal-to-noise ratio
85 dB (minimum)
Maximum Output Level
+5 dBu at 1% THD
Maximum Input Level
+7 dBu, input pad OFF
+22 dBu, input pad ON
Certification
Authorized under the DECLARATION OF CONFORMITY provision FCC part 15 as a class B dig-
ital device.
Tested to comply with FCC standards. FOR HOME OR OFFICE USE. This product complies with
part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may
not cause harmful interference, and (2) this device must accept any interference received, includ-
ing interference that may cause undesired operation. Changes or modifications not expressly ap-
proved by Shure Incorporated could void your authority to operate this equipment.
This equipment has been tested and found to comply with the limits for a class B digital device,
pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communica-
tions. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be de-
termined by turning the equipment off and on, the user is encouraged to try to correct the interfer-
ence by one or more of the following measures:
•
Reorient or relocate the receiving antenna
•
Increase the separation between the equipment and the receiver
•
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected
•
Consult the dealer or an experienced radio/TV technician for help
This class B digital apparatus complies with Canadian ICES-003.
Eligible to bear CE marking.
Conforms to European EMC directive 89/336/EEC: Professional Audio Products Standard EN
55103 (1996); Part 1 (emissions) and Part 2 (immunity). The P4HW is intended for use in envi-
ronments E1 (residential) and E2 (light industrial) as defined in European EMC standard EN
55103. It meets the applicable tests and performance criteria found in the standard for these en-
vironments. EMC conformance is based on the use of shielded interconnecting cables.
Actual Input Impedance
> 40 kW
Audio Output Connector
3.5 mm stereo (left=tip,
right=ring, ground=sleeve)
Power Requirements
9 V Alkaline battery
Battery Life
Up to 8 hours, volume dependant
Phantom Power Protection
Up to 60 VDC
8
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