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Manual for an Ibanez Troubadour 25 Watt Acoustic Amp

How to adjust or set the amp for different tones and sounds

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Posted on Jan 02, 2017

  • 5603 Answers

SOURCE: my spider III 15 watt buzzes whenever i have a cable plugged in.

MAKE sure you have it connected to a three wire circuit that has the ground. A lot of these style amps will buzz if they are left ungrounded.

Also search for sources of buzzing light light dimmers.

Further, power supply electrolytic filter caps are suspect.

Posted on Aug 27, 2009

  • 3153 Answers

SOURCE: Ibanez suddenly quit sending signal to the amp

First off make sure it hasnt had a KILL switch installed and that its not in kill position.

These models have suffered some wiring issues in the past and your may be one of those.

If you feel comfortable with a soldering iron then here is the wiring diagram

If not a local music shop will check it out for you and suggest any repairs.

Posted on Nov 19, 2009

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Posted on Jan 06, 2010

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Posted on Jan 17, 2010

  • 5603 Answers

SOURCE: Low volume for a 180

Welcome to the world of "specsmanship!" I could not find the exact COMPLETE schematic for this, but based on the schematics of the ACX1000 and ACX450 I will answer your question. This amp will have two separate amps... not saying how big yet... since the preamp schematic DOES have two complete channels and shows independent drives to the power amp section. Each of those power amps is probably made of a LM3886 chip. Looking at the spec of the chip, it will deliver 38 Watts to an 8 ohm load or 68 Watts to a 4 ohm load... which is likely what they have. Two of these in the amp and you have an amp with 68 x 2 or 136 Watts RMS... Now for the specsmanship... or in other words legal lying used by almost ALL sales departments... The power they post is NOT RMS continuous, but "Peak Power"... just like the shop vacuum specs saying 4 HP when you know the power input from a receptacle can't run a 4 HP motor... The peak power they can say is double the RMS power... so the 180 Watts is actually two, 90 Watt "speced" rating amps.
Now let's get down to the real issue: This amp has two 8 inch speakers... very good ones to handle decent frequency response for acoustic instruments... NOT LOW FREQUENCY BASS guitars... If you want to run BASS guitars, you have the WRONG amp... you need one with at least a 15 inch speaker. The key measurement is the SPL or sound pressure level you can get out of this. Myself, I have three ACX450 (baby brothers to the 1800) and use them for violin and can get all the sound I need. The amp is VERY versatile and has many good features. Remember that the dispersion of the sound is conical and probably is a cone 45 degrees wide. At a large venue you will want to tie the amp into the mains to cover a wide area. This amp will easily get to 100 Db in a 20 by 20 foot room. You shouldn't be over 100 Db for more than an hour for hearing loss protection anyway.

Posted on Jul 08, 2011

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