Hafler PH50B User Manual

PH50B

User Guide

Phono Stage

Haer is a division of Radial Engineering Ltd.
1588 Kebet Way, Port Coquitlam
BC, Canada V3C 5M5
[phone] info@haer.com

www.haer.com

Table of Contents Page

About Moving Magnet ............................................................ 1

Features ................................................................................. 2

Connect ...............................................................................3-4

Using ...................................................................................... 5

Warranty .................................................................Back Cover

Thank you for purchasing the Haer PH50B™ phono stage,

one of the best sounding and most versatile phono preamps

ever made. The PH50B will boost the signal from your turn­table and apply the necessary RIAA curve, allowing you to
connect to a HIFI playback system, a pro audio console input

or a recording interface.

Before making any connections, make sure your audio system
is turned off. This will help avoid loud turn-on and connection

transients that can damage more sensitive components such

as tweeters.

The Haer PH50B is designed for a turntable that is equipped
with a standard moving magnet cartridge, allowing for high
quality playback over balanced or unbalanced outputs. If your
turntable is equipped with a moving coil cartridge, please con­sider purchasing the PH60B, which is specically designed for

these types of cartridges.

PH50B PHONO STAGE

USER GUIDE

PH50B PHONO STAGE

Haer

1

ABOUT MOVING MAGNET
CARTRIDGES

Moving magnet (MM) cartridges

tend to produce a lush, mellow

sound. Most MM cartridges have
replaceable styli. Their high voltage

output, variety, and the availability

of stylus replacement make moving
magnet cartridges a great choice for
the beginner and audiophile alike.

The Haer PH50B is specically designed for moving magnet cartridges.
It will boost the signal to produce a -10 dB output while incorporating
a well dened RIAA curve preserve and transmit the original program
material with minimal coloration.

COIL

MAGNET

STYLUS

ABOUT THE RIAA EQUALIZATION CURVE

The Recording Institute Association of America (RIAA) gured out that in
order to reproduce the recording effectively, the high frequencies have to
be exaggerated. Upon playback, the reverse lter must then be applied –
resulting in a at or natural sound.

10 Hz

Preamp

Playback

Record

100 Hz 1 kHz 10 kHz

-20

-10

0

+10

+20

-30 dB -10 dB

Receiver Amp

Moving Magnet PH50B

Hafler

LOW CUT POWER

PH50B

LIFT

CE

15VDC · 400mA

GROUND

LEFT RIGHTBALANCED

Hafler is a division of Radial Engineering Ltd.

OUTPUT

LEFT RIGHT

INPUT

LEFT RIGHT

PH50B PHONO PREAMP

FOR MOVING MAGNET

Hafler

R

R

CE

15VDC · 400mA

GROUND

LEFT RIGHTBALANCED

Hafler is a division of Radial Engineering Ltd.

OUTPUT

LEFT RIGHT

INPUT

LEFT RIGHT

PH50B PHONO PREAMP

FOR MOVING MAGNET

Hafler

R

PH50B PHONO STAGE

Haer

2

FEATURES

1. LOW CUT: Activates the high-pass (low cut) lter

2. HPF CONTROL: Variable high-pass lter eliminates excessive low

frequencies

3. LIFT: Activates a ground lift on the XLR outputs to reduce hum and
buzz

4. POWER ON: Power switch turns on the PH50B

5. CABLE CLAMP: Secures the power supply cable

6. 15VDC: External power supply included

7. BALANCED OUTPUTS: XLR outputs connect to a console or re-

cording interface

8. UNBALANCED OUTPUTS: RCA outputs connect to a receiver or
HIFI system

9. GROUND LUG: Connect turntable to eliminate hum and buzz

10. INPUT: RCA input to connect your turntable to the PH50B

1

2 3

97 8

5

6

4

10

PH50B PHONO STAGE

Haer

3

CE

15VDC · 400mA

GROUND

LEFT RIGHTBALANCED

Hafler is a division of Radial Engineering Ltd.

OUTPUT

LEFT RIGHT

INPUT

LEFT RIGHT

PH50B PHONO PREAMP

FOR MOVING MAGNET

Hafler

R

L R

AUX

AUX

BD/DVD

TUNER

CD

CONNECT

Turn off your system and connect the output from your turntable to your
PH50B. Make sure you use high quality coaxial cables with proper shield­ing to minimize noise. It is also very important that you ensure the ground
connection from the turntable is properly and securely fastened to your

PH50B.

Using the Unbalanced Outputs

If you are connecting to a HIFI receiver use the RCA outputs on the PH50B

into a pair of line level inputs on the receiver. Do not use inputs labeled

‘phono’ as these will apply the RIAA equalization curve a second time,
resulting in distortion and a loss of high frequencies.

Turntable

Receiver

PH50B PHONO STAGE

Haer

4

CE

15VDC · 400mA

GROUND

LEFT RIGHTBALANCED

Hafler is a division of Radial Engineering Ltd.

OUTPUT

LEFT RIGHT

INPUT

LEFT RIGHT

PH50B PHONO PREAMP

FOR MOVING MAGNET

Hafler

R

L R

AUX

AUX

BD/DVD

TUNER

CD

INPUTLR

Using the Balanced Outputs

The balanced XLR outputs on the PH50B allow you to connect to de­vices with balanced inputs, including some home stereo receivers, and
pro audio equipment such as recording interfaces or mixing consoles.
This allows you to set up a turntable for playback in a home theater or
recording studio, or to convert your vinyl collection to a digital format us­ing recording software. Ensure that you are connecting to inputs that are
set for line-level operation. Once connected, should you encounter buzz
or hum from ground loops, simply engage the LIFT switch on the front of
the PH50B to lift the audio ground on the XLR outputs. The balanced out­puts on the PH50B can be set between two different outputs levels using
an internal push-switch. The default setting is +4dB with the switch in the
‘out’ position, and -10dB with the switch pushed in.

Turntable

Receiver

PH50B PHONO STAGE

Haer

Gain

Frequency

5

SECURING CABLES

The PH50B is equipped with a fully variable high-pass (low cut) lter that
can be activated to eliminate excessive low frequency rumble. This can
occur when listening to music at higher levels. If you encounter rumble,
simply turn the dial fully counter-clockwise (7:00 o’clock) and then slowly
turn clock-wise until the problem subsides. This handy control can also
be used to reduce low frequency transmission to other rooms. Bass en­ergy is much more powerful than mids and highs. Cutting the bass en­ables you to increase the volume without causing others discomfort. You
are now ready to enjoy.

A cable clamp next to the power jack can be employed to prevent ac­cidental disconnection. Loosen the clamp, pass the power cable through

and re-tighten.

LOW CUT FILTER

www.haer.com

Haer PH50B™ User Guide - Part #: R870 1310 00 / 08-2017 / V1
Copyright 2017 Radial Engineering Ltd. All rights reserved.
Specications and appearance subject to change without notice.

THREE YEAR TRANSFERABLE LIMITED WARRANTY

HAFLER (A division of Radial Engineering Ltd.) (“Haer”) warrants this product to be free from defects
in material and workmanship and will remedy any such defects free of charge according to the terms
of this warranty. Haer will repair or replace (at its option) any defective component(s) of this product
(excluding nish and wear and tear on components under normal use) for a period of three (3) years
from the original date of purchase. In the event that a particular product is no longer available, Haer
reserves the right to replace the product with a similar product of equal or greater value. In the unlikely
event that a defect is uncovered, please call 604-942-1001 or email service@haer.com to obtain a RA
number (Return Authorization number) before the 3 year warranty period expires. The product must be
returned prepaid in the original shipping container (or equivalent) to Haer or to an authorized Haer
repair centre and you must assume the risk of loss or damage. A copy of the original invoice showing
date of purchase and the dealer name must accompany any request for work to be performed under
this limited and transferable warranty. This warranty shall not apply if the product has been damaged
due to abuse, misuse, misapplication, accident or as a result of service or modication by any other
than an authorized Haer repair center.

THERE ARE NO EXPRESSED WARRANTIES OTHER THAN THOSE ON THE FACE HEREOF
AND DESCRIBED ABOVE. NO WARRANTIES WHETHER EXPRESSED OR IMPLIED, INCLUDING
BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE SHALL EXTEND BEYOND THE RESPECTIVE WARRANTY PERIOD
DESCRIBED ABOVE OF THREE YEARS. HAFLER SHALL NOT BE RESPONSIBLE OR LIABLE
FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS ARISING FROM
THE USE OF THIS PRODUCT. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND
YOU MAY ALSO HAVE OTHER RIGHTS, WHICH MAY VARY DEPENDING ON WHERE YOU LIVE
AND WHERE THE PRODUCT WAS PURCHASED.