QUANTUM

Superior Bass AMPLIFICATION

SUPERIO

The sheer physical force of a lowfrequency impulse. The breathtaking warmth of a tube power amp. The ultra precise response of a high-end studio device. In a nutshell, superior tone and touch are what Quantum bass amps are all about. Nothing less will do. An unprecedented union of classic and innovative technologies has birthed a new breed of bass amp. And it brings a hitherto unimagined measure of musicality, tonal authority and portability to the working bassist.

Technol

THE DynavalveTM Power amp Technology
Seasoned players know the deal: 100 tubedriven watts simply sound louder than 100 solid state-powered watts. The reason for this is that tube power amps complex dynamic properties enhance audio signals with transients. These added frequencies enrich the spectrum, making each note more concise, more explosive, and louder. Hence, signal content is decisive in determining the perceived volume, touch and response the very feel of an amp. Though tubes are influential, tube power amp circuits have a far more formative hand in shaping these audio phenomena. With this fact in mind, the engineers who masterminded the Quantum series created a 21st century original - the worlds first tubeless power amps with totally tube-driven response. A quantum leap in performance, the patent-appliedfor Dynavalve technology delivers better tone, greater sound pressure and a mightier punch to satisfy even the most discerning bass player.

The Preamp Technology

Transient characteristics of:
Quantum amps inputs feature the Tube Touch Circuit. Extraordinarily saturation-resistant, this circuit makes the amp remarkably responsive to the players touch. Another wonderfully practical feature is the Tube Growl knob that serves to dial in sweet-and-soulful sounding compression and tube saturation effects. It sweeps smoothly from subtle to strident and all points in between.
Functionality of conventional serial EQs

Solid-state power amps

Tube power amps
Functionality of the parallel EQ

dynavalveTM power amps

A breed of EQ otherwise found exclusively in high-end studio gear, the Pure Parallel EQ dramatically reduces undesirable filter effects, turning the four-band voicing section into an awesomely effective soundsculpting tool. Tweaked specifically for the bass, it affords easy, intuitive handling and transcendent audio results.

logies

Enhanced HF Neodym Speaker Technology
All Quantum combos and cabinets are loaded exclusively with speakers featuring Neodym magnets. Not only does this technology significantly reduce weight, it also creates a more concentrated magnetic field that considerably enhances response. These speakers feature integrated HF systems designed to render the crucial overtone spectrum with utmost uniformity. While the 10" speakers use parallel membranes (that is a dual cone design) to this end, the 12" and 15" woofers feature a fresh new technology. A machined aluminum cone (Dura Dome) renders the voice coils high frequency output. Both of these technologies deliver true response, a wide pattern of throw, and a rich overtone spectrum that blends perfectly with the low and mid-frequencies produced by the main membrane.
Tuned ResonanceCabinet Technology
Many years experience designing, tuning and manufacturing speaker enclosures enabled the Quantum development team to build cabinets that like fine acoustic instruments - make the most of resonances. Ingeniously engineered panels and bracings, as well as the robust, six-ply Okum wood (with about half the weight of standard cabinet woods), deliver powerful, punchy low-end projection and finely balanced, crisp midrange. Because the resonant enclosure is tuned to radiate uniformly across its entire surface area, the bass signal can be localized precisely from any position on the stage.
15" duraDomeTM Neodymium SPEAKER

QT 600

The toasty warmth, brawny punch and intuitive handling of a classic all-tube tone machine, wed to the flexibility and precision of a premium studio device: This combination of qualities makes the QT 600 the first choice for bassists who refuse to settle for anything less than the best. The amps mighty heart is a powerhouse 600 watts Dynavalve amp. Pumping out ample power for persuasive performance in every sonic scenario, it offers plenty of headroom to stress even the most fulminate musical accents. The Tube Growl knob affords total control over typical tube-driven compression and saturation, and an impedance selector matches output power to suit connected cabinets. The two passive and active inputs are extremely responsive across the full sweep of the gain spectrum, providing the perfect platform for launching even the most propulsive grooves. Powered by sophisticated parallel EQ technology, the four-way voicing section spares the rod to spoil the signal, gently tweaking frequencies for the most effective and musical sound-sculpting imaginable. Four pushbutton filters shape the basic tonal character: Punch emphasizes the low and high ends without altering level. Bass Shape attenuates the bottom end, say, to suppress undesirable stage rumble. Mid Boost pumps up the mids for muscular metal tone. HF Character underscores the shimmering overtones at the top of the frequency spectrum. The QT 600s DI Out balanced is variable, sending either the instruments (PRE) or the amps signal (POST) to the mixing console.

600 watts 14,5 kg/32 lbs 2.8-16 ohms

Power x TonE / Weight

This latest-generation bass cabinet offers top-drawer audio quality in an astonishingly light package. Neodym speakers are the pumping heart of the new Quantum PRO cabinets. Developed in a joint effort with Eminence, this technology delivers faster, more direct and precise response to the bassists touch for more controlled and musically expressive playing. All speakers ship with onboard HF transducer systems: The Dual Cone (in 10" speakers) and DuraDome designs render overtone spectrums unrivalled in depth, breadth and congruity sans the phase and directivity problems commonly encountered with horns. Built to withstand the rigors of the road, Quantum PRO cabinets robust plywood, rugged steel grilles, Speakon connectors and Old World workmanship ensure years of dependable service for even the hardest-touring player.

Qs 81o PRO

Can a classic be improved upon? Certainly, as the QS 810 PRO attests! Sporting a brand new set of Neodym loudspeakers, this 8 x 10" cab sounds fatter, sleeker and fresher.
8 x 10" Neod.- Speaker 1800 watts 62 kg/137 lbs 4 ohms

Qs 610 PRO

The compact alternative to the 8 x 10" bin: Its high-performance Neodym speakers pack the powerful punch of a classic 8 x 10" cab into a far more portable bin.
6 x 10" Neod.- Speaker 1350 watts 46 kg/101 lbs 5.3 ohms

Qs 2115 PRO

A well-rounded, very musical soundscape with wondrously woody mids - this incredibly light high-performance bin puts the joy back into and takes the pain out of bass stacks!
2 x 10"/ 1 x 15 " Neod.- Speaker 750 watts 34 kg/75 lbs 2.8 ohms

Qs 410 PRO

A state-of-the-art 4 x 10" bass cab, it pumps out crisp, tight low end, finely textured mids, and - courtesy of its Dual Cone Neodym speakers - expansive, shimmering top end. This ultra compact, extremely light powerhouse is the perfect complement to bigger bins and a sweet standalone solution that delivers professional-class tone for smaller gigs.
4 x 10" Neod.- Speaker 900 watts 32 kg/70,5 lbs 8 ohms

Qs 210 PRO

2 x 10" Neod.- Speaker 450 watts 21 kg/ 46 lbs 4/16 ohms

Qs 115 PRO

The perfect partner for the QS 410 PRO or QS 210 PRO: The earthy low end and woody mids of its 15" woofer meld with these models 10" speakers frequency spectrum to yield a homogenous and very musical sonic image.
1 x 15" Neod.- Speaker 300 watts 23 kg/51 lbs 8 ohms

Cabinets

Combos
Introducing a new class of bass combo, this line for the first time unites uncompromising sound quality, extraordinary headroom, intuitive handling and sensationally low weight. The Quantum Combo series comprises four models sporting identical preamp sections featuring an audiophile input stage with a vast gain range for active and passive basses, a Punch button for accentuating low and high end response, and a highly efficient four-band EQ. HF Character is another special feature. When this dual-purpose treble knob is twisted to the right, it gradually dials in high-frequency sparkle; to the left, it works like a classic treble pot. The Tube Growl knob controls the level of tube saturation, which serves to compress the signal and lend it tube-driven punch and assertiveness. The rich, fat fundamental sound of the Quantum Combo is powered by Dynavalve technology. This brilliant power amp circuits phase splitter tube is visible in a bright blue glowing window on the control panel. Cordura bags with a pull-out handle and casters are available as optional accessories for all Quantum Combos.

QC 310

With its 250 watts Dynavalve power amp, it ranks among the loudest amps in the 1 x 10" class. Unrivalled ease of use makes it the first choice for smart players on the go.
250 watts Dynavalve Power Amp 1 x 10" Dual Cone Neodym Speaker Parallel EQ Effects Loop Headphones Out 18 kg/40 lbs

QC 412

Unparalleled low-end pounce per ounce! Its 12" Neodym woofer weds the hairtrigger response of a 10" speaker to the beefy punch of bigger membranes. Even in loud bands, it lends bass signals plenty of oomph to cut through.
400 watts Dynavalve Power Amp 1 x 12" DuraDome Neodym Speaker Parallel EQ Effects Loop Headphones Out 20 kg/41 lbs

QC 415

The big bark of a classic 15" combo, the assertive bite of a stack, and the light weight of a practice rig - QC 415 is the new benchmark for every bass-slinging scenario.
400 watts Dynavalve Power Amp 1 x 15" DuraDome Neodym Speaker Parallel EQ Effects Loop Headphones Out 24 kg/53 lbs

QC 421

The loudest, punchiest and most versatile Quantum Combo: From classic picked rock riffs to stinging slap attack and smooth walking jazz bass, the QC 421 does it all with amazing aplomb. And at 29 kg, it is by far the lightest amp in its class.
400 watts Dynavalve Power Amp 2 x 10" Dual Cone Neodym Speaker Parallel EQ Effects Loop Headphones Out 29 kg/64 lbs

Technical Data

Combos/top
Gain Knob Mute Switch Tube Touch Circuit Hot Display Fat Display 4-Band Pure Parallel EQ Punch Switch Bass Shape Switch Mid Boost Switch HF Character Switch Tube Growl Knob Master Knob Active Passive Tuner Out Line Out DI Out, Balanced EQ, Pre/Post Assignable Ground Lift Switch Headphones FX Loop Punch/FX Loop Footswitch External Speaker Dynavalve Technology RMS (watts) Dual Cone Neodymium Speaker DuraDome Neodymium Speaker Dimensions in cm (W x H x D) Weight in kg/lbs (approx.) 50 x 50,5 x 35 17/ 37

QC 310 x x

QC 412 x x

QC 415 x x

QC 421 x x

x x x x x x x

x x x x x
QT 600 x x x x x x x x x x x x x x x x x x x x x x x x

55 x 55 x 35 19,5/43

60 x 62 x 40 24/ x 62 x 40 29/x 19,5 x 32 14,5/32
Speakon In/Out 10" Dual Cone Neodymium 15" DuraDome Neod. Impedance (ohms) Power Handling (watts) Dimensions in cm (W x H x D) Weight in kg/lbs (approx.)