Bellari PA550 Manual

Bellari Modtager PA550

Læs gratis den danske manual til Bellari PA550 (2 sider) i kategorien Modtager. Denne vejledning er vurderet som hjælpsom af 29 personer og har en gennemsnitlig bedømmelse på 4.7 stjerner ud af 15 anmeldelser. Har du et spørgsmål om Bellari PA550, eller vil du spørge andre brugere om produktet?

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Side 1/2

PA550 Pre Amplier with RIAA Phono preamp

and Headphone Amp

Connection guide

SPECIFICATIONS:

Gain: Line 16.4 dB gain @ 1kHz

Phono 56.6 dB gain @ 1kHz

Input Impedance: 22k line and 47k Phono

Output Impedance: 8 to 600 ohms Headphone,47 ohms RCA

Frequency Response: 3Hz to 36kHz

Equalization: RIAA +/- 1 dB, 14Hz to 23kHz

THD: .005% @ 1KHz

S/N Ratio: >94 dB unweighted

PWR: 15 VDC

Size: 5.5"w x 3.5"d x 1.25"h

Weight: .8 lbs

Indicator: 1 Power LED

Bellari is a division of Rolls Corporation

Salt Lake City, UT

6/18

Short explanation of RIAA equalization.

The RIAA equalization curve was intended to operate as the

global industry standard for records since 1954. However, it

is almost impossible to say when the change actually took

place.

RIAA equalization is a form of pre-emphasis on recording

and de-emphasis on playback. A recording is made with the

low frequencies reduced and the high frequencies boosted,

and on playback the opposite occurs. The net result is a at

frequency response, but with attenuation of high frequency

noise such as hiss and clicks that arise from the recording

medium. Reducing the low frequencies also limits the ex-

cursions the cutter needs to make when cutting a groove.

Groove width is thus reduced, allowing more grooves to t

into a given surface area, permitting longer recording times.

This also reduces physical stresses on the stylus which

might otherwise cause distortion or groove damage during

playback.

INPUT 2 OUTPUT

15 VDC

Preamplifier

PA550

MADE IN USA

PWR

MADE IN USA

In 1

Volume

Bass

0 10

Headphone

Treble

Ch2

Phono

Ch1

PHONO

INPUT 2 OUTPUT

15 VDC

Preamplifier

PA550

MADE IN USA

PWR

MADE IN USA

In 1

Volume

Bass

0 10

Headphone

Treble

Ch2

Phono

Ch1

PHONO

What's in the box?

1 - Made in USA PA550

1 - 15V power supply PN PS27s

1 - This owners manual

1 - Love for great audio

REAR PANEL

RCA OUTPUT: For connection to your amplier or other device.

PHONO: RCA for connection to a turntable.

INPUT 2: RCA stereo input.

15 VDC: For connection to the included power supply.

GROUND POST: Standard phono grounding post.

FRONT PANEL

VOLUME: Adjusts the level of signal.

IN 1: 3.5mm jack for connection to a phone, music player or computer. TRS

Stereo (left, right and ground).

HEADPHONE: 3.5mm stereo headphone output jack.

INPUT SELECTOR SWITCH: Selects the channel being used.

BASS and TREBLE: Perform as labeled. If you would like the tone not a󰀨ected

by the unit, set the controls at the '0' (half way up). This will then be the original

signal.

INPUT 2 OUTPUT

15 VDC

Preamplifier

PA550

MADE IN USA

PWR

MADE IN USA

In 1

Volume

Bass

0 10

Headphone

Treble

Ch2

Phono

Ch1

PHONO

INPUT 2 OUTPUT

15 VDC

Preamplifier

PA550

MADE IN USA

PWR

MADE IN USA

In 1

Volume

Bass

0 10

Headphone

Treble

Ch2

Phono

Ch1

PHONO

INTRODUCTION

The PA550 audio Pre Amplier has three selectable stereo inputs: phonograph,

RCA and 3.5mm (1/8") jack for phones, tablets or other. It features a very power-

ful headphone amplier so it can be used as a stand alone headphone amp.

Designed to have the highest level of sound quality, whether you are using it as

a headphone amp or sending music to your amplier. At every design stage we

spent a considerable amount of time focused on one thing, sound quality.

OPERATION

The inputs and outputs of the PA550 are easy to understand. Plug a signal in,

select the source, and connect to your desired headphones or amplier.

One thing to note about the PA550 is that the RCA output's are the default out-

put. When you plug a pair of headphones into the headphone jack on the front of

the unit the RCA output section is then completely disconnected from the circuit.

Meaning that when using the headphone output of the PA550 the unit is only

functioning as a headphone amplier.

Connecting to your Turntable

RCA phono input on the rear connects to your turntable. The ground post

is where things can get complicated. Ground hums have always plagued

the turntable. We recommend using the ground post to connect to your

turntable's ground connection. In our experience we have never seen a

situation where not using the ground would sound better than using it.

Ground loops are a very common occurrence with audio. The more

equipment you use, the higher likelihood you will have a ground loop.

The term "loop" refers to your ground generating unwanted noise from

traveling back and forth in a loop. The turntable is usually the most likely

component to have a ground issue. Another thing to try if you have a

ground loop is connecting the turntable ground to the RCA jack's ground

if the ground post is not remedying the issue. One thing to keep in mind

is that ground loops can be anywhere in a system, so try and isolate the

components that are the issue before spending a lot of time looking at

just one component.

Thank you for purchasing the Bellari PA550. We hope you enjoy using

the PA550, and that it makes listening to your music collection rewarding.

We sincerely appreciate the opportunity to build a product for you and

participate in your love of quality music and sound. We love what we do

and we’re happy to help. All Bellari products are hand built in Salt Lake

City, Utah by people who care about high quality music.

The phono input of the PA550 requires that a turntable be connected to

it to complete the circuit. If you do not have a turntable hooked up to the

phono input do not select phono on the selector switch, as unwanted

noise will be present.

Produkt Specifikationer

Mærke:	Bellari
Kategori:	Modtager
Model:	PA550

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