SSL Alpha VHD-Pre Installation guide

AAllpphhaa VVHHDD PPrree

Installation Guide

Installationsanleitung

Manuel d’Installation

Manual de Instalación

Guida di Installazione

82S6AL020A

EN

DE

FR

ES

IT

Solid State Logic

S O U N D

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V I S I O N

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English 1

Deutsch 9

Francais 17

Espanol 25

Italiano 33

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This section contains definitions, warnings, and practical information to ensure a safe working environment.

Please take time to read this section before installing or using this unit. Please do not dispose of these instructions.

General Safety

• Read these instructions.

• Keep these instructions.

• Heed all warnings.

• Follow all instructions.

• Do not use this apparatus near water.

• Do not expose this apparatus to rain or moisture.

• Clean only with dry cloth.

• Do not block any ventilation openings. Install in accordance with the

manufacturer’s instructions.

• Do not install near any heat sources such as radiators, heat registers, stoves

or other apparatus (including amplifiers) that produce heat.

• There are no user-adjustments, or user-servicable items, inside this

apparatus. Do not remove the covers of this apparatus; doing so will

invalidate your warranty.

• Refer all servicing to qualified personnel. Servicing is required when the

power supply has been damaged in any way, liquid has been spilled or

objects have fallen into the apparatus, the apparatus has been exposed to

rain or moisture, does not operate normally or has been dropped.

• Adjustments or alterations to this apparatus may affect the performance

such that safety and/or international compliance standards may no longer

be met.

Power Safety

• This apparatus is supplied with a universal power supply, approved and

certified for operation in this apparatus. There are no user-replaceable fuses.

• A power cord is supplied with this unit. Alternative power cords may be

used if rated 2.5A or above and fitted with a 3-pin IEC320 connector.

• Use only the Solid State Logic provided power supply. Use of any other

power supply is not covered by your warranty and may cause fire or

explosion.

• Any external power supply may become hot during normal operation of the

unit. Use care when handling the power supply.

• Do not attempt to modify the power supply unit in any way.

• If an extension power cable or adaptor is used, ensure that the total power

rating of the power cable and/or adaptor is not exceeded.

• The power socket used for this apparatus should be located nearby and be

easily accessible.

• Unplug this apparatus during an electrical storm or when unused for long

periods of time.

Installation Notes

• When installing this apparatus, place the apparatus on a secure level

surface.

• Ensure that no strain is placed on the cables connecting to this apparatus.

Ensure also that such cables are not placed where they can be stepped on,

pulled or tripped over.

• Do not operate this apparatus whilst it is covered or boxed in any way.

• Do not operate this unit with the covers removed. Performance may be

adversely affected.

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Safety and Installation Considerations

2

Your Alpha VHD Pre box should contain the following:

1. Un-pack

AAllpphhaa VVHHDD PPrree

Installation Guide

Installationsanleitung

Manuel d’Installation

Manual de Instalación

Guida di Installazione

82S6AL020A

EN

DE

FR

ES

IT

Solid State Logic

S O U N D

||

V I S I O N

Installation Guide

(this document)

The Alpha VHD Pre Unit

SWITCHING ADAPTOR

5A

* The cord supplied will be correct for the

territory where Alpha VHD Pre is purchased

1 x Power Cord *

or or

External Mains Adaptor

3

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2. Connect

POWER

+5V - 0.5A

+

/-15V - 0.3A

DC

MANUFACTURED IN U.K.

INPUT

4

3

2

1

OUTPUT

4

3

2

1

Solid State Logic - Oxford - England

ALPHA VHD Pre

Part no. 629998XA

Serial No

12345

Rear Panel Connections

5-pin 180° DIN 3-pin XLR-F 3-pin XLR-M

Pin 1 0V 0V 0V

Pin 2 0V +ve +ve

Pin 3 +5V –ve –ve

Pin 4 –15V

Pin 5 +15V

Front Panel Connections

Instrument ¼" Mono Jack

Tip Signal

Sleeve 0V

DC Power

+5V, ±15Vdc from PSU

Analogue Outputs

Balanced, max. output: +24dBu

Microphone Inputs

Balanced, max. input: 0dBu (+20dBu with Pad)

4

3. Play!

Power/Standby

Bright when unit is on,

dim when in standby

Instrument

Mono ¼" Jack for high impedence Instrument Input.

Inserting a jack will automatically select this input in

place of the standard microphone input

(on the rear of the unit).

Variable Harmonic Drive™

Adds level dependent colouration;

initially warm 2

nd

harmonic then

more aggressive 3

rd

harmonic

(see opposite)

Input Switches

Hi Z

Switches Mic Input impedence from 1kΩ to 10kΩ.

Use with PAD for Line Level inputs.

PAD Fixed 20dB attenuation for high level signals.

Glows ‘red’ when input is in ‘overload’ condition.

48V Switches +48V (‘phantom power’) to the Mic Input. Always

switch OFF before connecting/dis-connecting microphone.

Input Gain

Provides +20dB to +75dB gain

Output Gain

Provides ±20dB of adjustment

5

VHD – Variable Harmonic Drive™ – allows a signal (microphone or line) to be over driven from subtle harmonic

colouration through to full on distortion. The level of the incoming signal will have an affect on the VHD circuit, as will

the PAD button which offers 20db of gain reduction for loud signals, allowing the Alpha VHD Pre to work with line as

well as microphone level signals.

Each Alpha VHD Pre input features a control labelled ‘VHD’ with a range of adjustment indicated as ‘2

nd

’ to ‘3

rd

’.

Adjusting the VHD control changes the character of the added distortion from predominately 2

nd

harmonic to almost

entirely 3

rd

harmonic when fully clockwise; interesting blends between the two can be achieved at intermediate settings.

The character of 2

nd

harmonic distortion is akin to the warmer sound produced by overdriven valves whilst 3

rd

harmonic distortion is associated with the harder, brighter sound achieved from solid state devices.

The VHD control will have a far more noticeable effect at higher gain settings so the input gain should be used in

combination with the VHD control to affect the amount of distortion being added to the input signal. The PAD button

will glow red when the input stage is starting to overload; the VHD circuit is designed such that this is part of the

normal operation, though this should be avoided for a cleaner signal.

An over driven pre-amp may obviously have an effect on the gain of all parts the signal chain which follow the unit

and the output gain may need to be taken down to interface correctly with other equipment. The output level control

makes this adjustment a simple process.

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Using VHD

6

FCC Notice

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed

to provide reasonable protection against harmful interference when the equipment is used in a commercial environment. This equipment generates, uses, and can

radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.

Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his

own expense.

Instructions for Disposal of WEEE by Users in the European Union

The symbol shown here is on the product or on its packaging, which indicates that this product must not be disposed of with other waste. Instead, it

is the user’s responsibility to dispose of their waste equipment by handing it over to a designated collection point for recycling of waste electrical and

electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources

and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your

waste equipment for recycling, please contact your local city office, your household waste disposal service or where you purchased the product.

Standards Conformance

This apparatus fully conforms with the current protection requirements of the European community council directives on EMC and LVD.

Warranty

This product is warranted against failure resulting from faulty materials or workmanship for a period of 12 months from date of purchase.

In Warranty Repairs

In the event of a fault arising during the warranty period, please contact your local dealer or distributor who will arrange either for repair or replacement as

appropriate (a list of dealers and distributors can be found on the Solid State Logic website: www.solid-state-logic.com

). Note that no units will be accepted for

repair by Solid State Logic unless accompanied by a valid RMA number, obtainable from Solid State Logic prior to shipping. All units should be shipped to Solid

State Logic in their original packaging. Solid State Logic cannot be held responsible for any damage caused by shipping units in other packaging. In such cases

Solid State Logic will return the unit in a suitable box, which you will be charged for. Do not include the power cable, manual or any other items – Solid State

Logic can not guarantee to return them to you. Please also note that warranty returns will only be accepted as such if accompanied by the original receipt or

other proof of purchase.

Out of Warranty Repairs

In the event of a fault arising after the warranty period has expired, return the unit in its original packaging to your local distributor for shipment to Solid State

Logic. You will be charged for the time spent on the repair (at Solid State Logic's current repair rate) plus the cost of parts and shipping. Note that no units will

be accepted for repair unless accompanied by a valid RMA number, obtainable from Solid State Logic prior to shipping.

Physical *

Depth 230mm / 9" casing only

Height 44.5mm / 1.75" (1 RU)

Width 438mm / 17.25" casing only

482mm / 19" inc’ rack ears

Weight 2.6kg / 6 pounds

Power < 20 Watts

Boxed size 320mm x 550mm x 80mm

12.75" x 21.75" x 3.25"

Boxed weight 3.5kg / 8 pounds

* All values are approximate

Environmental

Temperature Operating: +5 to 30 deg. C

Non-operating: –20 to 50 deg. C

Max. gradient: 15 deg. C/hour

Relative Operating: 20 to 80 %

Humidity Non-operating: 5 to 90 %

Max. wet bulb: 29 deg. C

(non-condensing)

Vibration Operating: < 0.2 G (3 – 100Hz)

Non-operating,

power off: < 0.4 G (3 – 100Hz)

Shock Operating: < 2 G (10ms max.)

Non-operating: < 10 G (10ms max.)

Altitude Operating: 0 to 3000m

(above sea level) Non-operating: 0 to 12000m

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Connections

Power Supply IEC320 3-pin connector, 100 – 240 Vac, 50 – 60 Hz

Analogue I/O

Microphone Balanced, 3-pin XLR-F, Zin = 1kΩ (10kΩ for Hi Z)

Instrument Un-balanced, ¼" Mono Jack, Zin = 1MΩ

Output Balanced, 3-pin XLR-M, Zo = 40Ω

Power 5-pin 180° DIN connector, +5Vdc, ±15Vdc

Specifications

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18

Votre emballage Alpha VHD Pre doit contenir ce qui suit:

1. Un-pack

AAllpphhaa VVHHDD PPrree

Installation Guide

Installationsanleitung

Manuel d’Installation

Manual de Instalación

Guida di Installazione

82S6AL020A

EN

DE

FR

ES

IT

Solid State Logic

S O U N D

||

V I S I O N

Manuel d’Installation

(ce document)

L’unité Alpha VHD Pre

SWITCHING ADAPTOR

5A

* Le câble fourni est adapté au territoire

d’achat de l’unité Alpha VHD Pre

1 x Câble d’Alimentation *

ou ou

Alimentation secteur externe

Page is loading ...

27

EN

DE

FR

ES

IT

2. Connect

POWER

+5V - 0.5A

+

/-15V - 0.3A

DC

MANUFACTURED IN U.K.

INPUT

4

3

2

1

OUTPUT

4

3

2

1

Solid State Logic - Oxford - England

ALPHA VHD Pre

Part no. 629998XA

Serial No

12345

Conexiones del panel posterior

5-pin 180° DIN 3-pin XLR-F 3-pin XLR-M

Pin 1 0V 0V 0V

Pin 2 0V +ve +ve

Pin 3 +5V –ve –ve

Pin 4 –15V

Pin 5 +15V

Conexiones del panel frontal

Instrumento Enchufe mono ¼"

Tip (punta) Señal

Sleeve (manguito) 0V

Corriente continua

+5V, ±15Vde CC desde la unidad

de alimentación eléctrica

Salida Analógica

Balanceado, máxima salida +24dBu

Entradas de micrófonos

Balanceadas, entrada máxima: 0dBu (+20dBu con atenuador)

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Solid State Logic

S O U N D

| |

V I S I O N

Visit SSL at URL: http://www.solid-state-logic.com

VHD, VHD logo, Xlogic and Xlogic Alpha are trademarks of Solid State Logic

All other product names and trademarks are the property of their respective owners

No part of this publication may be reproduced in any form or by

any means, whether mechanical or electronic, without the written

permission of Solid State Logic, Oxford, OX5 1RU, England

As research and development is a continual process, Solid State Logic reserves the right

to change the features and specifications described herein without notice or obligation

E&OE

SSL Alpha VHD-Pre Installation guide

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