Compact and powerful, an original concept developed over fifty years ago
A case of history in the making: the Montarbo 459S powered mixer, now reengineered from the inside out. Its metal case became iconic amongst musicians over the sixties, and the integrated lids still double as a built-in mixer stand.
Under the bonnet, you can feel the technology behind 459S: a multi-effects 56 bit DSP, advanced protection circuits on the amps, plenty of horsepower to drive your PA.
The mixer shows 6 mono and 2 stereo channels, and the power outputs of the onboard Class-AB power amplifier delivers up to 320W for each of the 2 channels.
Features
- 200 + 200 W continuous @ 4 Ohms
- 6 mono + 2 stereo channels
- 6-band stereo graphic equalizer
- Effect send
- Auxiliary send
- Stereo digital effects processor based on
a 56 bit DSP with 24 bit Delta Sigma conversion
TECHNICAL SPECIFICATIONS
Input Section
| Micro (balanced - XLR) sensitivity | -60 dB |
| Micro impedance | 2.2 kohms |
| Line (unbalanced - jack) sensitivity | -32 dB |
| Line impedance | 10 kohms |
| Stereo L/R (unbalanced - jack) sensitivity | -48 dB |
| Stereo L/R impedance | 33 kohms |
| Channel gain range | 30 dB |
| Noise referred to input | -124 dB |
| Channel tone controls | treble ± 15dB @ 15 kHz mid ±15dB @ 600 Hz bass ±15dB @ 50 Hz |
Effects section
| Stereo digital processor | Reverb, Echo, Halo, Echo+Reverb and External Effect |
| AD/DA conv. | 24 bit - 48 kHz Delta-Sigma |
| DSP | 64-bit |
| Bandwidth | 40 Hz ÷ 15 kHz |
| Signal-to-noise-ratio | > 85 dB |
| T.H.D | < 0,1% |
| Effect send nom. level | 0 dB |
Master section
| Frequency response | 25 Hz ÷ 25 kHz, +0/-2 dB |
| Signal-to-noise ratio | 80 dB (nom. levels, eq.flat) |
| Graphic equalizer | ±12 dB / 80 - 200 - 500 Hz 1,6 - 4 - 10 kHz ±12dB |
| Insert in/out L/R | nom. level 0 dB |
| Aux output | nom. level: 0 dB max. level: +20 dB |
| Tape in nom. level | -10 dB |
| Tape out nom. level | -20 dB |
Amplifier
| Total output power | 200 + 200 W continuous @ 4 ohms 320 + 320 W peak @ 4 ohms |
| Frequency response | 30 Hz ÷ 25 kHz, +0/-2 dB |
| Protections | electronic protections, relais for delayed power-up sequence (5 sec.), automatic troubleshooting |
Enclosure
| Dimensions | 465 x 820 x 380 mm [15.75" x 18.3" x 7.9"] |
| Weight | 16 kg [35.2 lbs] |
| Cabinet | Metal |