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Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier 

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The Behringer ACX1800 is a 180W, 2-channel amplifier that features 2 - 8" speakers for true acoustic fidelity. The ULTRACOUSTIC amp includes 2 indepe...Click To Read More About This Product

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OVERVIEW

Totally true to your instrument sound and your music.

The Behringer ACX1800 is a 180W, 2-channel amplifier that features 2 - 8" speakers for true acoustic fidelity. The ULTRACOUSTIC amp includes 2 independent FX processors and an ultra-musical, 9-band graphic EQ for each channel, plus the revolutionary FBQ Feedback Detection system to reduce feedback in an instant. In addition, the ACX1800 has mute switches, inserts on each channel, and a balanced stereo XLR line out with ground lift switch to enable a direct connection to your mixing console. Includes a dual FS112 footswitch for effects on/off and channel switching.

FEATURES
  • Powerful 180-Watt, 2-channel stereo amplifier for acoustic instruments and vocals
  • 2 original 8" dual-cone speakers for ultimate sound reproduction
  • 2 integrated, 24-bit digital FX processors each with 16 awesome effects programs including reverb, modulation, delay, and various effects combinations
  • Revolutionary FBQ Feedback Detection System instantly reveals critical frequencies
  • Dedicated instrument and microphone channels with separate Gain, Compressor and FX controls
  • Individual 9-band graphic EQ on each channel
  • Dedicated Tuner switch per channel for use with external tuner
  • Switchable Phase correction on Channel 1 and Master for feedback prevention
  • Instrument and mic FX Inserts for external effects devices (stomp boxes, rack effects, etc.)
  • CD input
  • Balanced stereo XLR line out with ground lift
  • Dual footswitch FS112 for FX included

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SPECIFICATIONS

ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier

  • 20.7"W x 16.8"H x 9.5"D 40.6 lbs
Reviews
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Review Snapshot

by PowerReviews
BehringerULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier
 
3.8

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (11)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (6)

  • 2 Stars

     

    (3)

  • 1 Stars

     

    (1)

60%

of respondents would recommend this to a friend.

Pros

  • Easy to use (5)

Cons

  • Poor sound quality (3)

Best Uses

No Best Uses
    • Reviewer Profile:
    • Experienced (4)

Most Liked Positive Review

 

Very good for acoustic guitars

I own this little gem of an amp. I use it in much the same way as 3 Dog Music, although a little differently. This amp doesn't have a lot of power output,...Read complete review

I own this little gem of an amp. I use it in much the same way as 3 Dog Music, although a little differently. This amp doesn't have a lot of power output, especially for larger clubs or venues, however this is easily corrected. I also use it as an acoustic guitar monitor, and I use a good condenser mic in front of the cabinet speakers which then runs through a tube pre-amp and then into the soundboard. This is where I get the volume needed when volume is needed. It is very clean, noise-less, and produces a very accurate acoustic signature for each of the guitars I use on stage. I usually place it to the side of me about 10 feet away and use an amp stand to angle it so it's pointing straight at my head rather than by legs. It it makes a perfect guitar monitor and running it through a tube pre-amp before it gets to the mixer board, lets me adjust the pre-amp to match the output of the Behringer amp. It truely gives an accuate, clean, noise-less reproduction of an acoustic guitar. I could not be happier. By the way I went through at least a dozen acoustic amps before I got this one and is by far the best one I've owned for acoustic amplification.

VS

Most Liked Negative Review

 

cool idea, poor performance......

very poor.... the sound & power 180 watts? more like 18 watts, looks cool...but effects poor chorus...I sent it back!

very poor.... the sound & power 180 watts? more like 18 watts, looks cool...but effects poor chorus...I sent it back!

Reviewed by 22 customers

Displaying reviews 1-10

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(7 of 12 customers found this review helpful)

 
1.0

It only takes 20 mins to know its bad!!!

By thyREV

from Macon, GA

About Me Experienced

See all my reviews

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Pros

  • Portable

Cons

  • Limited Functions
  • Low Volume
  • Poor Sound Quality
  • Weak

Best Uses

  • Practice Amp Maybe

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

Less than 20 min after opening the box I was on the phone with Musicians Friend to return it.

I intended this amp to go with my Les Paul Ultra III for the acoustic pickup, but the sound was brittle and tinny. When I put the Ultra III through a DI or even my Fender Mustang I got a full rich acoustic. But just to be sure I tried my Taylor 814. Surely the 814 would be fine. Nope! It sounded like a $49 Walmart Guitar.

Also the volume was non-existent. Cranked to the max it barely got over the acoustic.

The onboard FX were terrible and limited.

On the upside it was a pretty brown color with a nice gold face and nice looking (but cheap plastic) hardware.

I can't really think ANY reason to buy this amp. Stay away!!!

(3 of 4 customers found this review helpful)

 
5.0

I like this amp

By Larry

from undisclosed

About Me Experienced

See all my reviews

Pros

  • Easy To Use
  • Excellent Sound
  • Good Warmth

Cons

  • Cheap Knobs Rotary Pots
  • Very Heavy

Best Uses

  • Home Studio

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I like this amp. It makes my Ovation Elite LX come alive. More than enough features and output for my home use. Very heavy, glad I don't have to carry it around. Electronically everything seems to be beautifully designed. However, I do not like the rotary pots and their associated knobs. When I can wiggle side to side a knob attached to a circuit board pot I think cheap. That has to put strain on the circuit board. The knobs need to have bigger shafts to prevent the wiggle. My low end Behringer amp has very solid feeling knobs. Can't imagine why the high end model would use such flimsy feeling ones.

(3 of 3 customers found this review helpful)

 
5.0

Very good for acoustic guitars

By Scooterflash

from Florida

See all my reviews

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I own this little gem of an amp. I use it in much the same way as 3 Dog Music, although a little differently. This amp doesn't have a lot of power output, especially for larger clubs or venues, however this is easily corrected. I also use it as an acoustic guitar monitor, and I use a good condenser mic in front of the cabinet speakers which then runs through a tube pre-amp and then into the soundboard. This is where I get the volume needed when volume is needed. It is very clean, noise-less, and produces a very accurate acoustic signature for each of the guitars I use on stage. I usually place it to the side of me about 10 feet away and use an amp stand to angle it so it's pointing straight at my head rather than by legs. It it makes a perfect guitar monitor and running it through a tube pre-amp before it gets to the mixer board, lets me adjust the pre-amp to match the output of the Behringer amp. It truely gives an accuate, clean, noise-less reproduction of an acoustic guitar. I could not be happier. By the way I went through at least a dozen acoustic amps before I got this one and is by far the best one I've owned for acoustic amplification.

(3 of 4 customers found this review helpful)

 
2.0

Behringer ACX 1800

By Comastod

from Alabama

See all my reviews

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I have a Behringer ACX 1000 that I have used for a few years in my 1 man acoustic act and I have an Ovation LX that I play and it sounds great and has a lot of punch through it, and the vocals even sound good. It recently developed a buzz so I decided to buy the ACX 1800 because it had 180 watts and thought that with all of the EQ, EFX and Feedback control that it would be a better amp for me. Well I was wrong! I just got the amp and noticed right away the size difference between the 2 amps (the 1800 is a lot smaller) and thought, I'll give it a try and see if it compares in sound quality. I plugged the guitar in and turned the volume to 3 and had no sound. I new it wasn't a cord issue so I turned it up to 6 and could barely hear it. I then turned it up to 8 pregain and 10 master and could not believe how thin the sound was. I tried to EQ the sound but it distorted real bad. In all actuality this amp doesn't seem to have 30 watts! Maybe I got a bad one. I don;t know. I boxed it right up, called Musicians Friend and they said no problem and sent me a return label. Thanks Musicians Friend! You are what you say you are. A true MUSICIAN'S FRIEND!

(3 of 4 customers found this review helpful)

 
5.0

A Professional View

By 3 Dog Music

from Jacksonville Florida

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

This thing is one clean machine. I use it with my top quality Gibson's & and other top of the line acoustic's in room from 75 to 175 seating cap. And it fills the room nicely. I was worried about a good bass end with such small speakers, but the closed back does the job. I do place the amp on an amp stand to get it off the floor and project into the room. There's no sense trying to play at someones feet. This is not a muscle amp, but it is a true projection of the instrument that your putting into it. When I need more kick for opening act slots and larger venues,I do use the direct line outs into the main sound system and use the amp as a monitor. I set my level and tone then give it to the soundman. No buzz or hum. Just a clean signal to the board. I'm about to purchase the second one for each side on the stage.

(3 of 4 customers found this review helpful)

 
3.0

you get what you pay for

By Wd.lHCUwA

from Boise, Idaho

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I have the, "Behringer Ultracoustic ACX1800 Acoustic/combo Guitar Amplifier". Well at first this amp was great but, after a few months I noticed a buzz in channel 2, this turned into a hum, and mid range went out in both channels, so the sound quality went down allot. Now me, Im using this amp in a small room so it isn't turned up very loud, still I figured this amp would last along time, which it didn't all theses problems I listed happened 6 months after I bought this amp, so for me this amp is a disappointment.

(2 of 3 customers found this review helpful)

 
4.0

This amp is 60 watts per side and great

By jurso99

from Lowell,MI

About Me Experienced

Pros

  • Easy To Use
  • Great practice amp
  • Low Cost

Cons

  • Limited Fx
  • Not Loud -bettr With Prea

Best Uses

  • Practice-home Use

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

If your on a buget and looking for a practice amp or your first amp this will do.If your using a passive pickup in your guitar use a preamp.This is rated at 60 watts straight from behringer so if your looking for power buy the marshall 100asd or the fishman artist.Both really good but almost twice the money.
You do get what you pay for,also please reads docs before claiming this is suppose to be a higher rating.This amp serves the purpose as well as my acx1000.

(2 of 5 customers found this review helpful)

 
2.0

cool idea, poor performance......

By JC

from RimRock, AZ

About Me Professional Musician

See all my reviews

Ask me a question

Verified Buyer

Pros

  • Easy To Use

Cons

  • Limited Functions
  • Poor Sound Quality
  • Weak

Best Uses

  • Amateur Recording

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

very poor.... the sound & power 180 watts? more like 18 watts, looks cool...but effects poor chorus...I sent it back!

(2 of 2 customers found this review helpful)

 
3.0

Pretty quiet.

By Acoustomaniac :^)

from Ireland.

See all my reviews

Ask me a question

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I owned this and from the word "go" I was dissapointed by the low power output. IT looks "the business" and has all the gizmo's to set us tingling, it works well in the bedroom, but get it out at a gig with my acoustic duo and you wont hear a thing. Empty bar room is OK, but get ten or fifteen people in there talking and you wont be heard. 180 watts it says on the box, but when I measured with my Radio shack decibel meter at three feet, the ACX 1800 was far quieter on full volume than my Epiphone valve junior at 1/2 volume (clear music) rated at five watts??You get what you pay for, but not with the ACX 1800! I sent mine back!I now plug my acoustic straight into the 4 channel PA, its only 100 watts, but it can be heard plenty (problem solved).

(1 of 1 customers found this review helpful)

 
3.0

Not 1/2 loud enough

By Acoustomaniac :^)

from Ireland.

See all my reviews

Ask me a question

Comments about Behringer ULTRACOUSTIC ACX1800 Acoustic Guitar Amplifier:

I thought 180 watts was gonna crank it out, but at full volume its getting almost as loud as my Epiphone valve junior at (FIVE watts)???Effects are better than anything I ever had, but I've had better EQ on much cheaper amps.This one won't get out of my bedroom, simply because it looks pretty cool. The previous, ACX 1000 was far better in the EQ, sounding very acoustic indeed, also far better in the the loudness (volume), even though it was only rated at 120 watts (in a bigger cabinette), but EQ reliability let it down.

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