Table of Contents
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MATCHLESS
MUSICAL INSTRUMENT AMPLIFIER
For All Avalon 30 and 35 models
INTRODUCTION
Thank you for choosing a MATCHLESS brand instrument amplifier. Your amplifier has
been carefully hand-crafted using only quality materials. The chassis of your amplifier is
completely hand wired employing construction techniques of military electronics
manufacturers. We utilize a Hybrid method of point to point wiring, turret style, and printed
circuit board. The board in the Avalon series utilizes 3 oz. copper tracing.
The wiring is silver coated stranded copper in a Teflon jacket for extra resistance to heat
and
decay. We use chassis mount tube sockets that are rivet mounted to a rugged welded
steel chassis. Our hand wired paper bobbin transformers are designed for 100% duty cycle.
Vacuum tubes are selected for tone, low noise and performance. This kind of craftsmanship
and attention to detail enables us to offer to the purchaser our six year guarantee.
MATCHLESS amplifiers are ruggedly built, and aside from the periodic tube or indicator
lamp replacement, should require very little maintenance. We have designed every
MATCHLESS product to be a trouble-free, roadworthy, studio quality amplifier.
FEATURES
Your MATCHLESS is a straight forward amplifier devoid of bells and whistles. It is
an all tube design including the power supply rectifier. Cathode bias operation is utilized for
the output stage. The top-boost channel uses two 12AX7's tubes in the first preamplifier.
All Avalon amplifiers incorporate a MASTER volume control feature. Only 30 Watt EL-84
based Avalon amplifiers will come standard with a HI-LO power setting switch enabling the
artist to take full advantage of the harmonic rich nature of an all vacuum tube design.
An effects loop is a standard option for the Avalon series. MATCHLESS Avalon amplifiers
may be ordered as single combo speaker as well as separate head and cabinet
configuration.
OPERATION: GENERAL
Your MATCHLESS is an all tube design. If your experience is limited with regard to vacuum
tube instruments amplifiers, you should become familiar with the characteristics that
differentiate vacuum tube designs from their solid-state counterparts... Aside from the tone
and sonic performance.
1. Vacuum tube amplifiers require a "warm up" period of up to one minute before they
become operational, and they usually sound better as they "cook". This is due to the fact
that electrons only flow when the cathode of a tube if fully heated. This is also the reason
vacuum tube amplifiers run so much hotter than solid-state design.
2. Many vacuum tube amplifiers incorporate a STAND-BY switch, which aside from muting
the amplifier, performs a more valuable function of removing current from the circuit while
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Table of Contents
Summary of Contents for Matchless Avalon 30 series
- Page 1 OPERATION: GENERAL Your MATCHLESS is an all tube design. If your experience is limited with regard to vacuum tube instruments amplifiers, you should become familiar with the characteristics that differentiate vacuum tube designs from their solid-state counterparts… Aside from the tone and sonic performance.
- Page 2 This allows the amplifier to cool and greatly enhances the useful life of the output tubes. NOTE: MATCHLESS amplifiers are biased hot and should not be allowed to idle with no Input signal for long periods of time.
- Page 3 INSTRUMENT INPUTS: Your MATCHLESS Avalon amplifier has two inputs one High Input and One Low Input. The purpose of having two inputs is that the upper input (input 1) provides more gain a brighter top end.
- Page 4 This is why MATCHLESS amplifiers are described as having a smooth tone that won’t fatigue ears even at a high volume.
- Page 5 MAINTENANCE Aside from routine vacuum tube and indicator lamp replacement, your MATCHLESS should require very little in the way of maintenance. Periodically examine the four output tubes visible from the rear of the chassis. Any tendency of one or more of these tubes glow reddish in the plate area is an indication of an imbalance in the amplifier.
- Page 6 Replace the rear panel and test the amplifier again. LOGO INDICATOR LAMP REPLACEMENT Matchless employs 6.3V incandescent bayonet style lamps to illuminate the logo and the front panel. All the lamps are of the same type for simplicity. A lamp type #44 is recommended for all lamps, although a type # 47 may be substituted if a brighter look is desired.
- Page 7 USE IN OTHER COUNTRIES Your MATCHLESS amplifier is NOT equipped with a multiple primary winding enabling the user to set the amplifier for various voltages and line frequencies available in foreign countries. The Avalon series amplifiers are a dedicated and fixed voltage power transformer.
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