Crate Amplifiers SPA100 manual Technical Specifications, System Block Diagram, Protection

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SPA100 1 / 2 - R a c k P o w e r A m p l i f i e r

Technical Specifications

POWER OUTPUT

 

100 Watts RMS @ 4 ohms

 

 

75 Watts RMS @ 8 ohms

 

 

 

FREQUENCY RESPONSE

 

+/-0.5dB, 20Hz – 20kHz @ full rated power

 

 

TOTAL HARMONIC DISTORTION

Less than .06%, 20Hz – 20kHz

 

 

Typical .02% @ 1kHz

 

 

INTERMODULATION DISTORTION

Less than .05% @ 300W / 4 ohms

 

 

 

SLEW RATE

 

20 volts per nanosecond

 

 

 

SIGNAL TO NOISE RATIO

 

Greater than 100dB

 

 

 

INPUT TYPE AND IMPEDANCE

 

Transformerless electronically balanced, 20k actual load impedance.

 

 

Suitable for Low or High-Z balanced line. 3 pin “XLR” plus

 

 

3 conductor 1/4” phone jack input per channel.

 

 

 

INPUT SENSITIVITY

 

1.0 V RMS

 

 

 

LOAD IMPEDANCE

 

4 ohms or greater

 

 

 

OUTPUT CONNECTIONS

 

1/4” jack & 5-way binding posts

 

 

 

PROTECTION CIRCUITRY

 

Short circuit, RF burnout, overtemp, speaker protection relays,

 

 

turn on/off transient protection, DC protection and limiter (Anti-clip)

 

 

 

COOLING

 

Forced air fan cooling, rear intake, front and side exhaust

 

 

 

POWER REQUIREMENTS

DOMESTIC:

120 VAC 60Hz, 75VA

 

EXPORT:

100-115 VAC 50/60Hz, 75VA

 

 

220-240 VAC 50/60Hz, 75VA

 

 

 

SIZE AND WEIGHT

 

10.5” W x 1.75” H x 11.5” D; 9.3 lbs.

 

 

 

System Block Diagram:

LIMIT

LINE

INPUTSINVERTER

LEVEL

POWER

AMP

SIGNAL

PROTECT

SPEAKER

 

 

OUTPUTS

PROTECTION

Due to ongoing product development and improvement, the specifications

contained herein are subject to change without notice.

www.crateaudio.com

©2003 SLM Electronics, Inc. • A Division of St. Louis Music, Inc.

1400 Ferguson Avenue • St. Louis, MO 63133

18-567-01 • 05/16/03

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Contents SPA100 Order to achieve maximum performanceSPA100 1 / 2 R a c k P o w e r a m p l i f i e r Features IntroductionFront Panel Information Rear Panel Information Line SpeakerInputs Outputs Speaker Impedances And Power Ratings Power OutputOutput Power Per Speaker Cabinet Installations and Operation Mono Operation One AmplifierStereo Operation Two Amplifiers Left Side AMP Right Side AMPGraphic EQ SideMonitor AMP Speaker AMP StageMonitors Biamping Two Amplifiers High Freq AMP LOW Freq AMPTriamping Three Amplifiers High Freq AMPMID Freq AMP Technical Specifications System Block DiagramLimit Line Inputsinverter Level Power AMP Signal Protect Protection

SPA100 specifications

The Crate Amplifiers SPA100 is a versatile and powerful amplifier designed for musicians seeking rich tones and robust performance across various musical genres. Renowned for its reliability and sound quality, the SPA100 has become a staple for guitarists and bass players alike.

One of the standout features of the SPA100 is its impressive power output, delivering 100 watts through its two channels. This ensures an ample amount of volume for live performances, making it suitable for anything from intimate gigs to larger venues. The two channels allow musicians to customize their sound, with one channel typically dedicated to clean tones and the other for overdriven or distorted sounds.

In terms of sound shaping capabilities, the SPA100 is equipped with a 3-band EQ for both channels. This equalization system gives players the ability to sculpt their tones precisely, adjusting the bass, mid, and treble frequencies to fit their individual styles or the demands of specific musical pieces. The built-in reverb effect adds an extra layer of depth to the sound, making it perfect for creating atmospheric performances.

The SPA100 features a solid-state design, which contributes to its durability and consistent performance. Solid-state amplifiers are known for their ability to produce high headroom, making them less prone to distortion at higher volumes—a critical advantage for playing live. Additionally, the amp is designed with high-quality components, ensuring reliability on the road.

Another significant aspect of the SPA100 is its lightweight nature, making it easy for musicians to transport. Despite its power, the design focuses on portability, a key consideration for today's gigging musicians. This combination of power and portability means that the SPA100 can deliver sophisticated sound while being easy to manage.

For connectivity, the SPA100 includes multiple input options and effects loops, allowing musicians to integrate various pedals and effects into their setup seamlessly. This flexibility enhances the amplifier’s usability in both studio and live scenarios, accommodating a wide range of instruments and effects.

In summary, the Crate Amplifiers SPA100 is an exemplary amplifier that marries sound quality with user-friendly features. Its robust power, comprehensive EQ, solid-state reliability, and portability make it a preferred choice for musicians on the go. Whether performing live or rehearsing, the SPA100 stands out as a reliable and versatile piece of gear that caters to the diverse needs of contemporary musicians.