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User’s Manual
Ver.1.00 April 2007
BI-AMPLIFIED
STUDIO MONITOR
INFRASONIC BLOW SERIES
Premium Digital Module BLOW5D
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CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED The lightning flash with the arrowhead symbol within an SERVICE PERSONNEL. equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral
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INTRODUCTION Thank you for purchasing BLOW5! Before using this gear, please carefully read the ‘CAUTION’, and ‘SAFETY’ sections and the boxed out ‘IMPORTANT NOTE’ sections. These sections provide important information for the proper operation of the unit. And, in order for you to get a better monitoring experience, the user’s manual should be read entirely. This manual is intended to familiarize you with all the control elements of the BLOW5 speakers. This unit handled correctly, w
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1. Main Features 1.1. BLOW5 2-way bass-reflex bi-amplified 5 inch near field studio monitor Flat frequency response (±1.5 dB, 58 Hz to 20 kHz) and wide pass-band frequency (50Hz ~ 22kHz) 90 watt (40 watt HF and 50 watt LF) Full discrete power amplifiers with servo-loop and perfect protections. 0.75" natural silk dome High frequency transducer 5.25" Polymer coated paper fiber cone low frequency transducer Full magnetic shielded enclosure and independent amplifier room XLR an
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2. PANEL DESCRIPTIONS 2.1 FRONT VIEW 1 2 3 4 (1) 0.75” natural silk dome High Frequency Transducer (2) 5.25" Polymer coated paper fiber cone low frequency Transducer (3) Front Illuminant Logo Lamp and Protection Indicator The white Lamp means that the unit is on normal operation mode. The red Indicator stands for the protection mode. (4) Slotted Bass-reflex Port BLOW5/BLOW5D User’s Manual 5
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2.2 REAR VIEW 5 6 7 4 3 Power Amplifier Module 2 Pre-Amplifier Module Digital Module 1 (1) Power On/Off Switch and AC Inlet (5) High Frequency Tilt Control Use to power on or off the unit. You can adjust the treble tilt of the unit by selecting from 3 steps (-2dB, Flat, 2dB @3.0 kHz) (2) Analog Inputs XLR input and 1/4” TRS Balanced input Connector. (Impedance 20k Ω) BLOW5 accepts balanced and (6) Room Compensation Con
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2.3. DA-912 (INCLUDED IN BLOW5D) 1 3 2 4 6 5 (1) AES/EBU Digital Input Connector (2) S/PDIF Coaxial Input Connector XLR for AES/EBU and RCA for S/PDIF coaxial digital input connector. (24-bit/192kHz) DO NOT try to use Coaxial input for analog audio signals. (3) Source Select Control Switch You can select the type of input between AES/EBU (XLR) and S/PDIF (Coaxial). (4) Digital Thru out Connector Connect from the one speaker unit to the
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3. INSTALLATION 3.1. POSITIONING SPEAKERS IMPORTANT NOTES Be careful not to grab or touch the speakers when in use. Damage may occur. Do not put anything on the unit. When the speaker is in operation. The heat sink in the rear side will be hot. Take care not to touch it. The heat sink which is behind of unit is sharp. You can be harmed with it. Be careful to handle it Positioning monitor speakers correctly in the control room is very important to their performance. In o
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3.2. ADAPTING THE BLOW5 TO THE ROOM ACOUSTICS Generally there are many factors affecting the monitoring of sound. For example, room size, distance from the wall, size of studio space, the reflection of the room, and the distance between speakers and user. In a multi-channel monitoring system like 5.1 surround or THX, a subwoofer is included in the system to produce low frequency effect. So it may be necessary to reduce the low frequency level of the monitoring speakers. Because of the
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Room Compensation Control If you’ve placed speakers close to the wall or in a corner, you’ll be hearing too much loud low frequency level. In the case of some studios, there is bass-trap for reducing the low frequency level. The Room Compensation Control allows you to lower the bass range depending on the room acoustics. You can select the switch to reduce low frequency level in 3 steps of -2dB below 500 Hz. The following graph shows how Room Compensation Control affects the respons
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4. CONNECTION 4.1. POWERING UP IMPORTANT NOTE All connections should be made, And faders, volumes, sensitivity and other controls are at minimum levels. Before powering up the BLOW5 speakers, all other equipment should be turned on first. Please make sure that the unit is plugged into the correct voltage. The power switch is located on the rear panel. Turn on the power to the BLOW5. The unit is equipped with a protection circuit, an interval of a few seconds is required before
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4.3. DIGITAL AUDIO INPUT (INCLUDED IN BLOW5D) Connect the XLR for AES/EBU cable to the AES/EBU input or the RCA for S/PDIF coaxial input of the rear panel. Connect ‘THRU’ to the RCA coaxial input of the other unit with RCA cable. Select the channel of each unit’s panel Input Select Switch should be selected on digital input. Select the source of digital input according to the type of digital input. Refer to the following diagram.
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5. SPECIFICATIONS 5.1. BLOW5 System / Enclosure Two-way, bi-amplified reference monitor (bass-reflex type) Free field frequency Response: 58Hz ~ 20kHz (+/- 1.5 dB) Free field cutoff response 50Hz ~ 22kHz (+/- 3.0dB) Enclosure Resonant Frequency (vent tuning): 62Hz Measured Maximum Continuous: 105dB SPL / 1m Harmonic distortion at 90 dB SPL @ 1 m on axis: 0.5% under Low frequency driver: - Diaphragm Type: Polymer coated paper fiber cone type - Diameter: 5-1/4" (133 mm
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High frequency tilt control : -2dB / Flat / +2dB (@ 10kHz) Room control : Flat / -2dB / -4dB (@ 100Hz) Base cut-off frequency control : Flat / 80Hz(THX) / 100Hz (-12dB/octave) Acoustic System Compensation rage : 30Hz ~ 200Hz, +/-6dB Max Indicator: power/protection (front, white LED) AC Power Input : - Max rated power : 115 watts - 100 ~ 120VAC, 200 ~ 240VAC, 50~60Hz via IEC power INLET 5.2. DA-912 Connector: XLR input (AES/EBU, IEC60958), RCA input (
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6. END USERS WARRANTY Trademarks INFRASONIC, BLOW5 and BLOW5D are registered trademarks of SIMS Corp. End User Warranty SIMS Corp. warrants this product, under normal use, to be free of defects in materials and workmanship for a period of One (1) year from date of purchase, so long as: the product is owned by the original purchaser, with proof of purchase from an authorized SIMS Corp. dealer. This warranty explicitly excludes power supplies and included cables, which may become
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BLOW5/BLOW5D User’s Manual 16
