Warwick ProTube IV, ProTube IX guide

DI OUT LEFT and DI OUT RIGHT sockets for supplying a stage or studio mixing console. TUNER OUT socket for the connection of a tuner. When MUTE mode is activated, the unmodified bass signal is retained here.

MONO LOOP for the serial insertion of dynamic effects units (e.g. compressor, auto wah, etc.). Connect SEND with the input and RETURN with the output of the effects device.

PARALLEL STEREO LOOP: the degree to IXwhich external effects influence the signal can be determined with the EFF. MIX control located on the front panel. Connect SEND with the input and RETURN L. and RETURN R. with the outputs of

the effects device.

LO CUT switch confines the SEND output to frequencies above 200 Hz. Modulation effects (e.g. chorus) remain clear this way.

Note:

You can also use the RETURN sockets as LINE INs in case you wish to operate the amplifier as a power amp. To this purpose rotate the EFF. MIX controls on the front panel to their full clockwise positions. CHANNEL 1/2 FOOTSWITCH allows to connect a footswitch for selecting between both channels. To do so use a switch (latch) and not a key (unlatch).

SPEAKER OUT sockets designed to supply loudspeaker cabinets. Each channel of the 2 x 450

	Mode	A
	Fullrange Mono	Fullrange
		Left und Right
	Fullrange Stereo	Fullrange
	Tube	Left
	Tube	High
	BiAmp Mono	High
		Left und Right

watts power amplifier provides respectively one XLR and one Speakon socket in parallel. The signal from the Speakon outputs is leaded by 1+ and 1-.

LINE OUT PARALLEL TO SPEAKER OUT sockets allow to connect additional power amplifiers.

BIAMP/FULLRANGE switches over between two operation modes of the power amplifier. In FULLRANGE mode the whole frequency range is provided by both SPEAKER OUT sockets. In BIAMP mode the signal is splitted by an active crossover.

X-OVER control sets the transition frequency between 80 Hz and 4 kHz.

STEREO/MONO switch to use the amplifier whether in stereo or in mono.

The combination of BIAMP and STEREO switch settings give access to different operation modes. Signal splittings at the respective sockets are as follows:

SPEAKER OUT A,

LINE OUT PARALLEL TO SPEAKER OUT A, called "A" hereafter;

SPEAKER OUT B,

LINE OUT PARALLEL TO SPEAKER OUT B, called "B" hereafter;

LINE OUT STEREO BIAMP HIGH - LEFT and RIGHT, called HIGH L and HIGH R hereafter, are shown in the following chart:

B	HIGH L	HIGH R
Fullrange	no signal	no signal
Left und Right
Fullrange	no signal	no signal
Right
Low	no signal	no signal
Left und Right

ProBiAmp Stereo Low Left

Balances can be determined with the respective BALANCE controls. The right one acts on the outputs A and B (LINE OUTs and SPEAKER OUTs), whereas the left one regulates between low and high frequencies in STEREO BIAMP mode. In this operation mode whether external power amplifiers with cabinets or active loudspeakers must be connected to the LINE OUT STEREO BIAMP HIGH sockets.

Low Right

high left

high right

IMPORTANT:

The BALANCE STEREO BIAMP CONTROL should be centered or pointing to the right- hand range in the operation modes mono- fullrange, mono biamp and stereo fullrange,

OTHERWISE NO SIGNAL WILL BE SENT TO A AND B, RESPECTIVELY THE INPUT LEVEL AT THE POWER AMPLIFIER WILL BE TOO LOW.

ProTube IX, ProTube IV specifications

The Warwick ProTube IV and ProTube IX are two notable amplifier series from the renowned German instrument manufacturer Warwick, widely recognized for their commitment to producing high-quality musical equipment. Both models are designed for bass players seeking exceptional sound quality, versatile features, and reliable performance on stage and in the studio.

The Warwick ProTube IV is distinguished by its powerful 450-watt output, delivering a wide dynamic range that ensures clarity and punch across various musical styles. One of its standout features is the innovative hybrid design, combining both tube and solid-state technologies. This design provides the warmth and character often associated with tube amplifiers, while also leveraging the reliability and headroom of solid-state components. This hybrid approach results in an amp that produces rich harmonic overtones and a full-bodied sound, satisfying the tonal preferences of many bassists.

Additionally, the ProTube IV sports a comprehensive set of tonal shaping options. Its dual-channel design allows musicians to switch between clean and overdriven sounds seamlessly. Built-in controls for gain, treble, mid, and bass frequencies give players extensive customization capabilities, enabling them to dial in their ideal tone. Furthermore, the amp features a balanced DI output, making it easy to connect to recording equipment or a PA system for live performances.

On the other hand, the Warwick ProTube IX ups the ante with its robust capabilities and innovative technologies. Featuring an impressive 800-watt output, this amplifier is designed for the professional bassist requiring reliable performance in demanding environments. Similar to the ProTube IV, it utilizes a hybrid architecture, blending the richness of tube warmth with the power and stability of solid-state circuitry.

The ProTube IX is equipped with advanced signal processing technology, including a built-in compressor and EQ section that allows for further tonal customization. The compressor provides control over dynamics, ensuring that each note is articulate and well-defined, even in high-volume situations. Additionally, the amplifier includes a range of connectivity options, such as headphone outputs and an AUX input, catering to modern players' needs.

Both models come housed in rugged enclosures, designed to withstand the rigors of touring and consistent use. Their user-friendly interfaces streamline operation, letting musicians focus on their performance rather than technical details.

In summary, the Warwick ProTube IV and ProTube IX represent a fusion of reliable engineering and tonal versatility. Their unique features and advanced technologies make them suitable for a wide range of bass players, providing the power and sound quality necessary for both live performances and studio recordings.