Radial Engineering SW8 MK2 Manual de usuario descargar pdf (Pagina 7)

pg.7

When it comes to high-delity

audio equipment, David Haer

is oen described as the man

who led the charge. In 1950,

David Haer and Herb Keroes

started a Philadelphia-based

company called Acrosound in

order to build and sell audio-

quality output transformers,

primarily for home electronics hobbyists. In 1954, David

Haer and Herb Keroes parted company. That same

year, Haer met an audio engineer named Ed Laurent,

who had designed a novel single-tube driver circuit for a

power amplier. In 1955, the two men founded the Dyna

Company which later became Dynaco with the intenon

of not only producing transformers, but high-quality

audio circuitry.

Dynaco’s rst product was the Mk. II 50 wa

power amplier. Available as a kit or preassembled unit,

the Mk. II was

sold for several

years unl its

replacement

in 1956 by the

Mk. III amplier

which produced

60 was.

Dynaco is best

remembered

by the ST-70 that was launched in 1959 and sold

primarily as a Dynakit. A masterpiece of ecient circuit

design, the ST-70 provided reliable, high-quality audio

amplicaon at an aordable price. More than 350,000

ST-70 ampliers had been sold when producon nally

ceased, making the ST-70 the most popular tube power

amplier ever made. Today, the Dynaco ST-70 is sll

considered to be one of the most outstanding tube

ampliers ever made.

In 1966, Dynaco became a wholly owned

subsidiary of Tyco, Inc. and David Haer remained with

the company for a few years, but le in 1974 to join

Ortofon, manufacturer and importer of high-end phono

cartridges. In 1977, Haer founded the Haer Company,

connuing the tradion of oering high quality kits and

assembled hi- gear. The Haer DH-200 was introduced

using mosfet outputs – a feature that way ahead of the

rest of the amplier community. In 1987 Halfer sold his

namesake to Rockford Corporaon where chief engineer

Jim Strickland took on the challenge of moving Halfer

towards building high end ampliers. This culminated

with the 9505 which by all accounts is one of the most

musical power amps ever made.

In 1995, Haer le the hi- market to instead

focus on producing ampliers for the studio market. This

is when Radial began the aliaon with Rockford, taking

on the distribuon of Haer ampliers for Canada.

Radial purchased the Haer brand from Rockford in

2014 with a goal of eventually re-launching some of the

Haer classic ampliers.

PH50 Phono preamp

PH44 Phono SUT

Part# H100-0050

MAP $400 USD

Part# H100-0060

MAP $500 USD

Part# H100-0044

MAP $1,000 USD

David Haﬂer 1919 - 2003

The Haer PH50 is a high performance phono

preamp for moving magnet (dynamic) cartridges

that incorporates a well dened RIAA curve

to preserve and transmit the original program

material with minimal coloraon. Parcular

aenon has been applied to reducing noise, a

problem common to the 33 RPM recording chain,

resulng in a -82dB noise oor with greater than

91dB of dynamic range and less than 0.002%

distoron.

The Haer PH60 is a high performance phono

preamp for moving coil cartridges that combines

a class-A transformerless head-amp design with a

well dened RIAA curve to preserve and transmit

the original program material with minimal

coloraon. Due to the extremely low signal level

produced by moving coils, parcular aenon has

been applied to reducing noise while retaining

the purity of the signal path to address the most

demanding audiophiles.

The Haer HA15 is a 100% discrete headphone

amplier that has been meculously designed

to produce Haer’s legendary sound quality with

sucient gain to power any type of headphone.

A unique ‘focus’ control may be engaged that

brings the stereo image to the center to beer

approximate the feel as if listening to loudspeakers

in a typical ambient space.

As the Tube Head will likely nd its way into

more discerning studios, a number of features

have been added to address this market. These

include balanced line inputs for easy connecon

to pro-audio workstaons and mixing consoles,

dual headphone outputs to enable the arst and

engineer to ‘share’ the listening experience when

evaluang the mix and throughputs that enable

the more creave engineer to use the tube drive

circuit to add tube character to tracks.

Proudly made in North America, the Haer PH34

and PH44 SUTs are passive devices that employ

ultra high performance Jensen Transformers to

boost the low-level signal produced by a moving

coil cartridge by as much as 31dB without any

amplicaon or the associated noise that they

produce. Jensen wrote the book on transformer

technology and for over 40 years has gained the

accolades of being the world’s most respected and

revered audio transformer manufacturer.

PH60 Phono preamp

HA15 Headphone amp

Part# HA400-0075

MAP $1,000 USD

HA75

Part# H400-0015

MAP $400 USD

‘Tube Head’

Headphone amp

Connued from Page 1

1 2 3 4 5 6 7 8 9 10 11 12

Comentarios a estos manuales

Sin comentarios

Radial Engineering SW8 MK2 Manual de usuario Pagina 7

Comentarios a estos manuales

Relacionado con productos y manuales para Los conmutadores de red Radial Engineering SW8 MK2