The AVI Laboratory Series Preamplifier
Owners Instruction Manual
For the use, care and maintenance of your Preamplifier
AVI Ltd
Suite 7 Lightpill Mill
Bath Road Trading Estate
Stroud
Glos. GL5 3QF
Tel: 01453 752656
Fax: 01453 752777
info@avihifi.co.uk
www.avihifi.com
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Introduction
Thank you for purchasing an AVI Laboratory Series preamplifier. As the name implies it is a precision instrument, meticulously hand built and tested and, given the right circumstances will produce the best sound quality that technology will allow.
We recommend that before you attempt to use your new preamplifier, you carefully read the following instructions.
Installation
The preamplifier can have other units of the same size stacked on top of it but it should be in a well ventilated, and not unduly dusty environment. If you are using an AVI amplifier with another manufacturers products that “plop or click” on switch on, then they should be turned on first and allowed a few seconds to stabilise before switching on the power amplifier. An amplified “plop or click” can sometimes damage loudspeakers.
Use good quality, screened coaxial phono to phono leads to connect CD players, tuners, record players, VCR and DVD players. The make is not important but the quality is. Locking phono plugs are inadvisable as are unscreened interconnects.
AVI amplifiers are designed to be largely immune from cable effects provided the correct type is used.
AVI products are exceptionally reliable but many of the faults we deal with are damaged phono sockets caused by people who are not getting satisfactory results and believe changing cables may cure the problem. This is extremely unlikely as the biggest differences you will hear are caused by room acoustic problems and then ancillaries like CD players and more particularly loudspeakers. Many shops have appalling dem rooms with the result that customers often end up with unsatisfactory loudspeakers, therefore if you are worried about the sound you are getting, please contact us and, provided you are able to describe reasonably accurately what it is that you do not like, we will advise.
Power Amplifier Choice
Your Laboratory Series Preamplifier is capable of extremely high quality sound reproduction and, although designed for use with AVI power amplifiers, can drive a wide range of power amplifiers and active speakers.
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The Remote Control Handset
All AVI products now use standard Philips RC5 codes and the Laboratory Series Preamplifier comes with a One for All Handset. This can control up to four units, all from different manufacturers. An AVI owner can customise this handset to suit any system or, because the amplifier uses widely accepted codes, it may be that a handset already in your possession will control it.
The One for All handset has comprehensive instructions for customising it to suit your requirements and we suggest that you program the MD button to operate your Laboratory Series Integrated Amplifier. The code number is 121142.
Control functions for the Laboratory Series Preamplifier are as follows:
Standby: Puts preamp into standby. NB. Only the program up down control will bring it out of standby again.
Program up/down |
brings unit out of standby (and back to last |
|
input selected) and changes input selected. |
Volume up/down |
controls volume and brings unit out of |
|
mute. |
Mute |
Press to mute and press again to regain |
|
sound. |
All these controls are located together in the lower half of the handset.
Phono Stage (if fitted)
If your preamplifier has been fitted with a phono stage then it will operate from the Disc button on the front panel and the two phono sockets on the left rear (viewed from the front). It is best to ask your dealer to select moving coil or moving magnet for you but if you do it yourself you must observe the following instructions.
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