GTA-1260 - Nady Systems, Inc.
Contents
1. 115VAC 60Hz 230VAC 50Hz Fuse For 115 VAC 3 AMP S B 250V For 230 VAC 1 5 AMP S B 250V Dimension 18 3 x 9 x 17 5 46 5 x 22 9 x 44 5 cm Weight 45 6 lbs 20 7 kg TUBE REPLACEMENT Preamp Tubes 12AX7A No adjustment required Output Tubes 6L6GC After replacing output tubes output tubes bias voltage should be checked with Standby switch set to On no signal input and all controls set to minimum If output tube bias voltage is not correct amplifier will sound unusually distorted with mushy audio and output tubes may overheat Normal output tube bias voltage should be 52VDC on Pin 5 of all output tubes For best results use matched output tubes NADY SYSTEMS INC 6701 SHELLMOUND STREET EMERYVILLE CA 94608 Tel 510 652 2411 Fax 510 652 5075 nady com SERVICE FOR YOUR NADY AUDIO PRODUCT U S Should your NADY AUDIO product require service please contact the Nady Service Department via telephone at 510 652 2411 or e mail at service nady com International For service please contact the NADY AUDIO distributor in your country through the dealer fr2. For medium distortion or crunch adjust the VOLUME to past the mid position the MASTER to mid and the DISTORTION to Position 2 For maximum distortion adjust the VOLUME to maximum the MASTER to a very low setting and the DISTORTION to Position 3 6 VOLUME CONTROL This adjusts the level of the input signal to the amp Increasing this level will create distortion dependent on the DISTORTION setting 7 MASTER VOLUME CONTROL Adjusts overall loudness of the amp 8 TREBLE CONTROL Adjusts the level of treble Hi frequencies 9 MID CONTROL Adjusts the level of mid range frequencies 10 BASS CONTROL Adjusts the level of bass frequencies 11 PRESENCE CONTROL Adjusts the high overtones texture and feel of the amp 12 REVERB CONTROL Adjusts the level of reverb mixed with the dry signal 2 3 4 5 6 7 8 9 10 11 12 REAR CONTROLS AND CONNECTIONS 6 1 POWER CONNECTION A standard IEC AC power socket for connecting to the main AC supply The IEC power socket has an integral fuse holder that takes a 20mm fuse NOTE Always replace a blown fuse with the same type as specified on the rear panel and under SPECIFICATIONS pg 7 for the AC voltage being used to power the amp Before you connect your GTA 1260 to the AC please make sure that your local voltage matches the voltage required by the unit Do not remove the center ground conductor 2 VOLTAGE SELECTOR S
3. and Canada 120V 60 Hz For other areas please check with local authorities When ready to operate plug the AC cord into the power source Make sure that the unit is turned off before connecting to the AC power source to avoid possible loud transients that can damage your speakers or your ears especially when monitoring with headphones NOTICE The information in this document is subject to change as the Company may make changes to product in order to improve reliability design or function without prior written notice No part of this manual may be reproduced or transmitted in any form or by any means without the written permission of the company IN NO EVENT WILL THE COMPANY BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER ARISING DIRECTLY OR INDIRECTLY SUCH AS LOSS OF PROFIT OR GOOD WILL THAT MAY BE SUFFERED IN CONNECTION WITH THE PURCHASE OF THIS PRODUCT OR FROM THE BREACH OF ANY REPRESENTATION OR WARRANTY LICENSE The Company grants the customer a non exclusive non transferable license to use the software if any accompanying this product for internal use on a single computer system The end user may make a single copy of the software solely for backup purposes otherwise no copies may be made of the software or any part thereof No other license of any kind is granted to any part of the product or any of the intellectual property therein LEGAL INFORMATION 5 FRONT CONTROLS AND CONNECTIONS 1 1 POWER SWIT
4. of the type described in the operating instructions or as marked on the product Replace the fuse only with one of the specified type size and correct rating 8 The power supply cord should 1 be undamaged 2 never share an outlet or extension cord with other devices so that the outlet s or extension cord s power rating is exceeded and 3 never be left plugged into the outlet when not being used for a long period of time 9 Care should be taken so that objects do not fall into and liquids are not spilled through the enclosure s openings 10 The product should be serviced by qualified service personnel if A The power supply cord or the plug has been damaged B Objects have fallen into or liquid has been spilled onto the product C The product has been exposed to rain D The product does not appear to operate normally or exhibits a marked change in performance E The product has been dropped or the enclosure damaged 11 Do not attempt to service the product beyond what is described in the user maintenance instructions All other servicing should be referred to qualified service personnel ATTENTION RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR An equilateral triangle enclosing a lightening flash arrowhead symbol is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure which may be of sufficient magnitude to constitute a risk of electric shock An equilateral trian
5. CH This switch turns the main power on and off Flipping the toggle switch up to the ON position will turn on the amp in phase with the main AC line voltage Flipping the switch down to the ON position will reverse the polarity In some cases AC hum caused by ground loops can be reduced by reversing the polarity Select the On position which has the least amount of AC hum 2 POWER INDICATOR LIGHT Lights when the unit is powered on 3 STANDBY SWITCH Flipping this toggle switch to ON OFF STBY will respectively enable disable the audio to the amplifier and the outputs This allows for proper warm up of the tubes before applying signal to them and allows the amp to stay warm when not in immediate use To extend the life of the tubes always turn the Main Power Switch on first for 1 2 minutes before flipping ON the Standby Switch 4 INPUT JACK Input for instrument outputs guitar keyboard high output mics for harmonicas and other effects devices 5 DISTORTION SELECTOR This three way switch selects the input sensitivity and amount of overdrive distortion Position 1 offers the cleanest signal with least amount of distortion Position 3 has the maximum amount of distortion Note The VOLUME and MASTER controls also affect the final signal level and the amount of distortion For cleanest operation least distortion adjust the VOLUME to a very low setting the MASTER to maximum and the DISTORTION to Position 1
6. GTA 1260 Classic Tube AMP with Reverb O W N E R S M A N U A L GUITAR AMPLIFIER 2 GTA 1260 Classic Tube AMP with Reverb Congratulations on your choice of guitar amplifier you have purchased one of the finest guitar amplifiers on the market today This unit was developed using the expertise of professional sound engineers and working musicians You will find that your new NADY AUDIO GTA 1260 has superior performance and greater flexibility than any other guitar amplifiers in its price range Please read this manual carefully to get the most out of your new unit Thanks for selecting NADY AUDIO as your choice in guitar amplifier Date of Purchase Dealer s Name City State Zip Model Serial CONTENTS FEATURES FEATURES 2 WARNING 3 INSTALLATION 4 LEGAL INFORMATION 4 FRONT CONTROL AND CONNECTORS 5 REAR CONTROL AND CONNECTORS 6 SPECIFICATIONS 7 All tube design featuring two 6L6GC power and three 12AX7A preamp tubes 60W RMS output 12 Nady PowerDri
7. WITCH For selecting the proper voltage 115 230VAC to match the power supply in your area 3 REVERB FOOTSWITCH JACK For connecting an optional external footswitch to turn the reverb on and off See your dealer for ordering the Nady FS 1 footswitch or order directly from Nady with the included ordering form If reverb footswitch jack is not used for switching a pure reverb line level signal is present at the jack This may be used for stereo effects with an outboard amp and speaker or plugged into mixing consoles and tape machines for recording The output at F S Jack is sleeve GND TIP HOT 4 SPEAKER JACK This jack is connected to the internal speaker using a L shaped plug and speaker cable The internal speaker can be disconnected if you wish to only use external speakers 5 EXTERNAL SPEAKER Jack for connecting external speakers For optimum output power these should be 8 minimum 6 LINE OUT This line level output signal is derived from the output of the power amp to incorporate all the characteristics color and tonal response of the output tubes This signal can be input into any device such as an audio mixer or another amplifier and can be useful in many lives sound or recording applications 1 2 3 5 6 4 7 SPECIFICATIONS The specifications above are correct at the time of printing of this manual For improvement purposes all specifications for this unit including design and appearanc
8. e are subject to change without prior notice Power Amp Section Tubes 2 ea 6L6GC Power Output 60 Watts 8 5 THD 40 Watts 4 5 THD Speaker Nady PowerDrive PD 12i by Celestion 12 8 Preamp Section Tubes 3 ea 12AX7A Input Imp 200K Input Sens Max clean 800Mv 1KHz Max dist 8Mv 1KHz Line Out Inp 600 Line Out Level 1V Nominal Power Requirements
9. gle enclosing an exclamation point is intended to alert the user to the presence of important operating and service instructions in the literature enclosed with this unit INSTALLATION 4 To ensure years of enjoyment from your NADY AUDIO GTA 1260 please read and understand this manual thoroughly before using the unit INSPECTION Your NADY AUDIO GTA 1260 was carefully packed at the factory in packaging designed to protect the units in shipment Before installing and using your unit carefully examine the packaging and all contents for any signs of physical damage that may have occurred in transit Please note Nady Systems is not responsible for shipping damage If your unit is damaged do not return to Nady but notify your dealer and the shipping company if shipped to you immediately to make a claim Such claims must be made by the consignee in a timely manner CONTENTS Instruction manual GTA 1260 verify that the unit s serial number is same as shown on shipping carton AC Power cord Warranty Card POWER CONNECTION The GTA 1260 has an internal power supply and is designed to operate from an external AC source Power requirements for electrical equipment differ from area to area Be sure to confirm that the voltage selected by the voltage selector switch on the back panel is proper for your area 120VAC 60 Hz or 230VAC 50Hz per the information below Europe except UK 230V 50Hz UK and Australia 240V 50Hz USA
10. om whom you purchased this product DO NOT ATTEMPT TO SERVICE THIS UNIT YOURSELF AS IT CAN BE DANGEROUS AND WILL ALSO VOID THE WARRANTY
11. ve speaker by Celestion Full complement of controls for total volume tone shaping and tonal definition including 3 way overdrive gain switch volume master treble mid bass and presence controls Spring reverb with adjustable control and switchable with optional FS 1 footswitch Classic retro look with attractive wood grain cabinet finish Classic tube type tone controls WARNING 3 IMPORTANT SAFETY INSTRUCTIONS When using this electronic device basic precautions should always be taken including the following 1 Read all instructions before using the product 2 Do not use this product near water e g near a bathtub washbowl kitchen sink in a wet basement or near a swimming pool etc 3 This product should be used only with a cart or stand that will keep it level and stable and prevent wobbling 4 This product in combination with headphones or speakers may be capable of producing sound levels that could cause permanent hearing loss Do not operate for a long period of time at a high volume level or at a level that is uncomfortable If you experience any hearing loss or ringing in the ears you should consult an audiologist 5 The product should be positioned so that proper ventilation is maintained 6 The product should be located away from heat sources such as radiators heat vents or other devices including amplifiers that produce heat 7 The product should be connected to a power supply only
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