JK Audio Pureformer Bedienungsanleitung
Pureformer
Audio Isolation Transformer
JK Audio
User Guide
2
Pureformer is a simple solution to many noise and hum
problems which occur when two audio products are
connected together. Pureformer can be used wherever
line level audio signals are connected between two or
more pieces of equipment such as: computer sound
cards, mixers, pre-amplifiers, tape decks, crosspoint
switches, etc.
Pureformer works in two ways. First, it isolates the elec-
trical grounds of both pieces of equipment. This is es-
pecially important in the case of computer audio cards
connected to high quality / low noise audio equipment.
The computer electrical ground is often filled with noise
from disc drive activity and data transmission.
Many audio cards use the same electrical ground for
the computer and the audio signal. When the computer
audio card is connected to your studio equipment, the
electrical noise from the computer can get into the rest
of your audio system. Pureformer completely isolates
the electrical ground of the two systems and only al-
lows audio signals to pass through. Pureformer cannot
remove noise once it has been mixed with the audio
signal, so it is important to find and treat the source of
each problem.
Description
3
Computer sound
card or other
audio source
Connection
Pureformer can also help when input / output incom-
patibilities exist. Audio inputs and outputs are almost
always designed as AC coupled. This means that DC
voltage differences are isolated from each other, even
though the grounds are connected . In some cases,
you may find equipment that is DC coupled. If both
input and output are DC coupled, the signal will easily
distort, break-up, or simply disappear. Pureformer
safely isolates any combination of AC and DC coupled
inputs and outputs.
The model Pureformer is covered by a 2 year warranty to
be free from defective workmanship and materials. In the
event that the Pureformer 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 EXPRESSED OR IMPLIED
WARRANTIES WHICH EXTEND BEYOND THE
WARRANTY HERE MADE.
Specifications
06/06
JK Audio, Inc. 1311 E 6th Street, Sandwich, IL 60548 USA
Voice: (815) 786-2929 Toll Free: 800-JK-Audio
Fax: 815-786-8502
Copyright ©2006 JK Audio, Inc. All Rights Reserved.
Warranty
Input: RCA phono jacks,
600 ohms impedance
Output RCA phono jacks,
600 ohms impedance
Frequency Response: 20 Hz - 20 kHz, ± 0.1 dB
Insertion Loss: 0.8 dB
Isolation: 1500 VRMS
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