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SPL Crescendo 1770 8-Channel Microphone Preamplifier

Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
$5,999.00
Item #: 
1500000331223   POS #:116526641
Product Description:

The Crescendo is an 8-channel microphone preamplifier that works with an internal operating voltage of 120V, breaking totally new ground. With such a wide dynamic range and high overload resistance, the entire dynamic range of the microphone can be recorded without any limitations. The preamplification electronics themselves have no effect on the s...  Click To Read More About This Product

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Gear returned in mint condition. If you're looking for a virtually new instrument in possibly less-than-perfect packaging, this is a great value.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
Gear returned in great condition, with only minor signs of use, such as slight scuffs or pick marks. It looks and plays like new and may be considered an equivalent to display units found in retail stores.
  • Includes 45-Day, No-Hassle Returns
  • Includes full manufacturer's warranty
$5,999.00
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This item is backordered but is available to reserve now. You will not be charged until the item ships. Email me when this is in stock.

This oversized item has special shipping requirements

×

This oversized item has special shipping requirements

Restrictions

Order Now!
This item is backordered but is available to reserve now. You will not be charged until the item ships. Email me when this is in stock.

This oversized item has special shipping requirements

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This oversized item has special shipping requirements

Restrictions

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Overview

The Crescendo is an 8-channel microphone preamplifier that works with an internal operating voltage of 120V, breaking totally new ground. With such a wide dynamic range and high overload resistance, the entire dynamic range of the microphone can be recorded without any limitations. The preamplification electronics themselves have no effect on the sound and you can rediscover the sound of your microphones with absolute signal fidelity and clarity.

VU -10
In the Crescendo, high gains can be used to optimally drive subsequent AD converters. Should the VU meter therefore deflect too far, you can reduce the displayed level by 10 dB.

48 V
The phantom power required for the use of condenser microphones is activated with the 48V switch.

Ø
Turn the polarity of a microphone signal 180-degrees by activating the polarity reversal switch.

Pad

For loud input signals (including line signals) the input sensitivity can be reduced by 20 dB.

Mic Gain

The gain is adjusted by a 12-step switch. The pre-amplification ranges from +18 dB to +70 dB.

Inputs 1 – 8
The input differential amplifiers are constructed with pairs of transistors, each of which is combined in a housing. Precise matching of the transistors and thermal coupling ensure high common-mode rejection and extremely low THD values. The choice of transistors and resistors has a decisive influence on the sound, and Crescendo has been optimized with the ideal components.

Outputs 1 – 8
SPL's 120V SUPRA operational amplifiers work as current amplifiers, which offers pure class A operation with over 6mA quiescent current. SPL largely dispense with coupling capacitors in order to avoid their sonic disadvantages (diffuse, sloping, loss of dynamics). In order to eliminate DC voltage components nevertheless, active servo circuits are used.

Alternate DB25 Output
For fast cabling to multi-channel converters, Crescendo offers DB25 connection.

Specifications
Analog inputs & output; XLR (balanced)
  • Maximum input & output gain: 32.5 dBu
  • Input impedance: 10 kΩ
  • Output impedance: 75 Ω
  • Frequency range (-3 dB): 20 Hz – 70 kHz
  • THD + N (10 Hz – 22 kHz, 30 dBu): 0.008 %
  • Noise (A-weighted, 150 Ω, 30dB Gain): -87.5 dBu
  • Noise (A-weighted, 150 Ω, 60dB Gain): -69.7 dBu
  • E.I.N. (150 Ω): -129.7 dBu
  • Common mode rejection (1 kHz): 80 dB
Internal Linear Power Supply with Shielded Toroidal Transformer
  • Operating voltage for analog audio: +/- 60 V
  • Operating voltage for relays and LEDs: + 12 V
Mains Power Supply
  • Mains voltage (selectable, see fuse chamber): 230 V AC / 50; 115 V AC / 60 Hz
  • Fuse for 230 V: T 1.6 A
  • Fuse for 115 V: T 3.15 A
  • Power consumption: max. 55 W
Physical
  • 19" W x 5.2" H x 11.8" D
  • Weight: 20.94 lb
Pro Coverage

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Pro Coverage gives you added warranty protection for your gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Click To Read More About This Product.

Pro Coverage includes
  • Accidental damage protection
  • Expedited repair or replacement
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to five years from date of purchase
  • Repair authorization-toll-free by phone or via the web
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