| Hartke AC75
75 Watt Acoustic Ribbon Amplifier
The Hartke Acoustic Ribbon series faithfully reproduces the sound of the any acoustic instrument thanks to their reference grade power amplifier section and unique speaker system featuring 5-inch, full range drivers and a 2 x 4 inch, planar ribbon transducer. The amplifiers are available in two versions, the AC75 with dual 5-inch drivers and 75 watts of power. Both amplifiers feature two input channels with Channel 1 providing inputs for passive or active acoustic guitar pick-ups, and Channel 2 providing XLR mic and dual RCA line inputs. A variable Notch Filter and Phase switch are also included to help reduce feedback.
The AC75 also features a 5-band graphic equalizer to shape the overall tonal response. Dazzling multi effects like delay, reverb and chorus are available from the built-in, 100 preset, 24-bit digital effect processor. The rich brown enclosures have been beautifully appointed with gold hardware and feature Hartke’s trademarked Kickback™ design and time-tested rugged construction. While the Acoustic Ribbon Series are packed with all the features demanded by the most discerning acoustic artists, what makes the amplifier special is the unmatched sonic performance.
The Acoustic Ribbon amplifiers are the perfect solution for electric acoustic guitars, and also, for multi instrumentalists who play electric violin, mandolin, Dobro and other acoustic electric instruments too. To build a fine acoustic instrument, a luthier must pay special attention in the selection of the various components like the wood for the top, sides and neck, as well as, the construction of the internal bracing. Hartke engineers have applied the same careful approach in the selection of the critical components and with the internal construction to produce a sound that is truly unique to the Acoustic Ribbon amplifiers. The full range 5-inch drivers, provide a smooth and even frequency response without the low frequency resonance associated with larger drivers. The ribbon transducer provides sweet high frequency response without the resonance and distortion that comes with standard tweeters. The result is sound reproduction that is totally true to the sound of the instrument it is amplifying. Simply put, the amps sound like your instrument, only louder.
Designed in a precision tuned Kickback™ enclosure, with two custom-voiced 5-inch full range drivers which naturally recreate the sound of the acoustic instrument without adding any unwanted coloration or distortion, and a 2-inch by 4-inch ribbon tweeter which adds clarity and overtones to the high end. Channel 1 has active and piezo instrument inputs, with bass and treble controls, while channel two has XLR microphone and RCA line inputs. There is a 5-band graphic EQ and a built-in 100 preset 24-bit digital effects processor, which can be routed to either channel.
The AC75 features a 75 watt bi-amped design, with 50 watts powering the full range speakers and 25 watts powering the high frequency ribbon tweeter. To reduce feedback, there is a phase switch on channel 1 as well as a variable notch filter with depth control. On the rear panel of the amplifier there is an effects loop, and XLR direct outputs. Simply put the Hartke Acoustic Ribbon amplifiers sound like your instrument, only louder.
Features
- 75 Watt Acoustic Guitar Combo
- Two 5" Woofers and a 2" x 4" Ribbon High Frequency Transducer
- 5-Band Graphic EQ
- Phase Switch and Variable Notch Filter Feedback Control
- 100 24-Bit Built-In Digital Effects
- Effects loop and direct output
- Precision tuned Kickback™ Enclosure
Specifications
Nominal Input Level
Active
Piezo
Mic Input (CH2) -50 dBu.
Line Inputs ( CH2) -20 dBu
Rated Output Power
AC75 75 watts (1 x 50 Low Freq. 1 x 25 High Freq)
AC150 150 watts (2 x 50 Low Freq. 1 x 50 High Freq)
Equalizer
Five-Band Graphic (Main Output)
±12 dB, center @ 100 Hz, 350 Hz, 1 kHz, 3.5 kHz, 10 kHz
Connectors
Ch1 Active Input 1/4” phone
Ch1 Piezo Input 1/4” phone
Ch2 Mic Input Female XLR
Ch2 CD In Left and Right RCA
Headphone - St. TRS 1/4” phone
Direct Output Male XLR
Speaker System Impedance (Ohms): 4 Ohms Impedance
Low Frequency Drivers
AC75 2 x 5" Special Design Hartke full range 8 ohm, 25 watt Drive Unit
AC150 4 x 5" Special Design Hartke full range 8 ohm, 25 watt Drive Unit
High Frequency Driver
AC75 2 x 4-inch planer ribbon on a 5 x 7 waveguide,
AC150 2 x 4-inch planer ribbon on a 7 x 7 waveguide.
Dimensions
AC75
Height:17" (43.18 cm)
Width:16.5" (42.09 cm)
Depth: 11.25" (28.30 cm)
AC150
Height:18.85" (47.88 cm)
Width:19.75" (50.17 cm)
Depth: 15.25" (38.48 cm)
Weight
AC75 37.5 lbs. (17 kg)
AC150 48 lbs. (21.8 kg)
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