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Manual
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Variable Expansion
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MixDream XP
Discrete Class A
16 in 2 summing mixer
dB
Model
Output 2591
MixDream XP
Model 2591
Analog 16:2 summing unit
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Manual MixDream XP Model 2591 Version 1.0, 5/2005 Designer: Ruben Tilgner This manual contains a description of the product. It in no way represents a guarantee of particular characteristics or results of use. The information in this document has been carefully compiled and verified and, unless otherwise stated or agreed upon, correctly describes the product at the time of packaging with this document. Sound Performance Lab (SPL) continuously strives to improve its products and reserves t
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Contents Introduction .................................................................... 4 Analog vs. Digital Summing ............................................ 4 Advantages And Special Features ................................... 5 MixDream XP Advantages—An Overview ......................... 5 Connection of Samplers, Keyboards etc. ......................... 5 Mono Switches ................................................................ 5 Before You Begin ..................................
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Introduction The MixDreamXP design plan provides for stereo mixdown at the analog level. This concept offers high-grade analog summing without panorama and fader controls, in turn allowing an engi- neer to retain the entire scope of his computer automation. In use, the MixDreamXP requires almost no departures from an engineer‘s usual working mode, so that all his trusted DAW features and familiar working routines remain available while the MixDreamXP seamlessly expands his aural mixing pal
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Advantages MixDreamXP Advantages—An Overview • High-grade analog summing on just 1U rack space for amazing signal depth, precise localization and a wonderful stereo imaging • No analog mixing console necessary • No loss of computer automation • Lower DAW processor utilization rates • Latency free monitoring • Surround capable (from up to 3 MixDream XP units) • Channel capacity expandable through linked units • Cost-effective expansion for the MixDream model 2384 Special Features Connection
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Before You Begin It makes good sense to think about where you place your MixDream XP before connecting it. It should be positioned so that you can easily reach it, but there are other considerations. Try not to place it near heat sources or in direct sunlight, and avoid exposure to excessive vibrations, dust, heat, cold or moisture. It should also be kept away from transformers, motors, power amplifiers and digital processors. IMPORTANT: Adjust the voltage setting on the rear panel so th
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3 1 - 4 1 - 7 5 Wiring Rear Panel/Connections MixDream XP 7 3 0 4 - DAW Stereo Mix Summing Tracks 2 x A/D 16 x D/A 12 9-16 1-8 2 x XLR to XLR or TRS 2 cascade cables, 8 x XLR or TRS to DB25 each CAUTION Right Right L Left eft Right Left WARNING RISK OF ELECTRIC SHOCK DO NOT OPEN TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK DO MixDream XP NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. SERIAL No. AVIS: RISQUE DE CHOC ÉLECTRIQUE - NE PAS OUVRIR DISCONNECT MAINS BEFORE REMOVING COVER. Seriennummer THIS EQUIP
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Rear Panel/Connections General Advice The MixDream XP enclosure is EMC-safe and effectively shielded against HF interference. Nonetheless, you should carefully consider where you place the unit to avoid electrical disturbances. The MixDream XP and all devices to be connected should be turned off before connections are made. Always turn volume down or mute your speakers when disconnecting or repatching audio cables to avoid damage to your speakers and ears. The following graph shows the cor
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Rear Panel/Connections Right Right L Left eft Main Outputs The Main Outputs provide a stereo mixdown for a recording device through electronically balanced XLR outputs. Here as a rule you will route the stereo mix through an A/D converter for Main Outputs re-recording as a new DAW track. Right Left Monitor Outputs The Monitor Outputs run parallel with the Main Outs and provide for separate monitoring of the stereo mixdown through elec- tronically balanced XLR outputs. Monitor Outputs TIP:
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7 5 3 0 4 - Control Elements Output Control The Output control regulates the MixDreamXP output level (at the Main Outs). Its range extends from -14 dB to +7 dB. With dB this Output Control final levels can be ajdusted to accommo- Output date subsequent A/D converters. Because the Main Outputs and Monitor Outputs run in parallel, both outputs are regulated globally via this control. Variable Output Switch Variable Output The Output Control is activated by the Variable Output switch situated
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Control Elements GND Lift Switch (Rear Panel) The GND Lift switch separates internal ground from chassis GND LIFT ground. The switch can be activated to eliminate ground loop humming which may occur if the MixDreamXP is connected to units with a different ground potential. The switch should normally be in the GND position to maintain the shielding effect of the metal housing. Applications and Modes of Operation Summing Tracks destined for analog summing are routed from the DAW to the MixDr
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Applications and Modes of Operation MixDream XP in Mastering Applications Your MixDreamXP is predestined for mastering applications, as we‘ve planned its superior sound quality for just such occa- sions. Two applications are especially interesting: 1) discrete Mastering, and 2) upsampling to SACD/DVD-A formats. 1) Normally a studio mastering engineer requires that a stereo file be made available for his or her work. But in such a mixdown, any problems (for example, significant variations
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3 3 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 - - - - - - - - - 4 4 4 4 4 4 4 4 4 1 1 1 1 1 1 1 1 1 - - - - - - - - - 7 7 7 7 7 7 7 7 7 5 5 5 5 5 5 5 5 5 Linking Several MixDream XP 13 3 3 3 3 3 3 3 3 3 0 0 0 0 0 0 0 0 0 4 4 4 4 4 4 4 4 4 - - - - - - - - - One further MixDream XP is always connected to the Expansion Inputs. POWER 1/2 3/4 5/6 7/8 Variable 9/10 11/12 13/14 15/16 Expansion Mono Mono Mono Mono Output Mono Mono Mono Mono Input MixDream XP Discrete Class A 16 in 2 summing mixer 2 dB Output Mod
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Block Diagram 14
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Frequency Response,FFT Spectrum Analysis Measurements Audio Precision Frequency Response 05/09/05 14:48:13 2591 MixDream XP Expansion Input, Fix Output +10 Well, we think this is „linear +9 +8 frequency response“ in the +7 +6 word‘s best possible sense: +5 +4 even at 200kHz the fall-off +3 +2 is below -1dB. +1 d B r -0 And mind you, typical A -1 -2 frequency response measu- -3 -4 rements are related to a -5 -6 -3dB fall-off. -7 -8 -9 -10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k 200k H
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Power Supply No effort or expense was spared here. We don’t know of anyone who makes good coffee with great beans and bad water, and we don’t know of anyone who makes great sounding audio equip- ment with mediocre power supplies. The best parts cannot give you a sound without dependable power. The MixDreamXP is equipped with an internal power supply. Two +/-15 VA transformers are capable of providing adequate current regardless of any demands you can put on it, even when running the MixDre
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Specifi cations Frequency range: ‹ 1Hz-200 kHz (-1 dB) THD+N: -103 dBu 20-22kHz, Input Level +10 dBu Noise Level: -97 dBu 20-22kHz, A-weighted Max. Input Level: +28 dBu Max. Output Level: +28 dBu @ 1 kHz, THD+N -95 dB Dynamic range: 125 dB 20-22kHz, A-weighted Crosstalk L-R: -90 dB @ 1 kHz, Input Level +10 dBu CMRR: ‹ 70 dB @ 1 kHz, Input Level +10 dBu Input Impedance: 10 kOhm Output Impedance: 65 Ohm Power Consumption: 36 W Dimensions and Weight Standard EIA 19 inch Housing, 1 U Dimensions (W
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Guarantee SPL products are guaranteed for a period of one year against faults in materials or workmanship. Refer to your local supplier for full sales and guarantee terms. 18 MixDream XP
