Instruction/ maintenance manual of the product RX-7-248 Toa
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T O A MIXING CONSOLE Operating Instruction Manual Model RX-7-164, RX-7-248, RX-7-328 T O A ELECTRIC CO., LT D. KO B E, JAPAN.
Precautions .................................................. 2 General Description ............................................ 3 Features .................................................. ..... 4 Specifications & Characteristics ..............
Precautions 1 . Power Supply Unit (RPS-7) The RPS-7 is separate f ro m the console. I f the power switch on the RPS-7 is turned " o n " without a connection between the RPS-7 and t h e board usin g the accessory cable packed i n the RPS-7, p o w e r is n o t supplied to t he board.
General Description TOA's R X - 7 is a modular 1 6 , 24 or 3 2 input channel, 4 group output, 4 to 8 program output mixing console. It is designed t o meet a wide variety o f requirements in professional sound reinforcement an d recording applications.
GROUP/FOLDBACK a n d GROUP/ECHO MODULES 1 . AUX INPUT (Group/Foldback Module) an d E CH O I N ( Gro up /E cho Module) are both balanced (transformer-isolated), with Low, Mid and High-EQ provided for bo th types o f inputs. 2. ACCESSORY SEND/RECEIVE jacks a r e located on the rear o f the modules f or inserting signal processing devices.
PROGRAM MODULE 1 . Group 1 , 2, 3 and 4 controls p ick up t he signal from t he four group out busses and assign them to the program output. Th e program output i s therefore suitable fo r feeding the signal t o t h e house sound system.
Specifications & Characteristics GENERAL SPECIFICATIONS RX-7-164, RX-7-248 A ND RX-7-328 Frequency Response (Measurement o f source impedance 1 5 0 ohms) +0dB, -0.5dB; 50Hz to 20kHz +0dB, -2.0dB; 20 Hz to 30 k H z Total Harmonic Distortion Les s t ha n 0 .
Input & Output Specifications **All XLR connectors are floating (balanced) and transformer-isolated. TR S phone jacks ar e unbalanced. Sensitivity is the level required t o produce a nominal output o f + 4 d B (1.23V), or t h e specified nominal output level if other than +4dB.
Characteristics Diagrams EQUALIZER CURVES FILTER CURVES Level Diagrams (Fig. 1 ) (Fig. 2) — 8 —.
1 . XLR type INPUT connector i s balanced, transformer-isolated and accepts low impedance sources f r o m -60dB t o + 10dB. P r o p er adjustment o f bot h the I NPUT LEVEL Swi tch and TRIM Knob mak e i t possible to provide the optimum setting fo r each input.
1 3 . Ec ho knobs provide for two independent echo mixes. The No. 1 echo k no b mixes t he signal post-fader, but the No. 2 echo kn o b is associated wi th t he Pre-Post fader selector switch. 1 4 . PAN P O T adjusts the relative output level (balance) to the f ou r mixing busses.
Group/Foldback Module (GFM-7) 1 . AUX INPUT connector (XLR typ e ) is balanced, transformer-isolated. The nominal level and impedance are +4dB and 60 0 ohms respectively. 2 . GROUND (GND) LIFT switch i s f or pin 1 , which i s used to avoid ground loops that ar e often ca us ed in connection with other equipment a nd that may induce hum.
1 . ECHO IN co nnector (XLR type ) i s balanced, transformer-isolated. T he nominal level and impedance are +4 dB and 6 00 ohms, respectively. 2 . GROUND (GND) L I F T Switch is f o r pi n 1 , which i s used to avoid ground loops that are often caused i n connection with other equipment a nd that may induce hum.
Ea c h program module incorporates two program output channels (programs A and B) and each program channel can be controlled independently. 1 . PROGRAM OUT PU T B connector (XLR t ype) i s balanced, transformer-isolated. Th e nominal level and impedance are +4dB and 60 0 ohms, respectively.
1 . AIR MONITOR (Ceiling Microphone) inputs, XLR type connectors (L and R) ar e balanced, transformer-isolated. Th e nominal levels and impedances are —70dB and 6 0 0 ohm s, respectively. 2. PHONES OUT jacks (L an d R) ar e unbalanced. T he nominal levels an d impedances are +4dB and 1 0 k ohms, respectively.
1 . TALKBACK OUT connector (XLR type) i s balanced, transformer-isolated, an d its nominal level and impedance are +4dB and 6 0 0 ohms, respectively. T he talkback output includes the oscillator/pink noise generator signal or talkback m ic input, depending on th e switch status on the m odule.
1 . DC POWER I NPUT connector accepts D C power fr o m the power supply unit ( RPS-7). The PSM-7 is connected to the RPS-7 w i t h an accessory umbilical cable. T he power switch on the R PS - 7 w i l l n ot turn on with out this connection between the RPS-7 and PS M- 7.
Meter Panel ( RXM-7-25, RXM-7-35, RXM-7-43) METER PANEL ( RXM-7-25) 1. Group I/Program 1 VU Meter An illuminated VU meter provides a visual indication of either Group 1 output le v e l (Post Group 1 Master Fader) or Program 1 output l ev el (P o s t Program 1 Master C ontrol), depending on the position o f the a dj a c en t selection switch.
1 0 . VU meter selector switch ( Foldback 1 or Echo 1) 1 1 . Foldback 2/Echo 2 VU meter An illuminated VU meter provides a visual indication of either Foldback 2 out pu t level, (Post Foldback 2 Master Volume Co ntrol) or Ec ho 2 output level (Post Echo 2 Master Volume Control), depending on the position o f the adjacent selector switc h.
METER PANEL ( RXM-7-35) 1 . Group 1 V U Meter (Group 1 output level) 2. Group 2 VU Meter (Group 2 output level) 3. Group 3 V U Meter (Group 3 output level) 4.
1 . Group 1 V U Meter (Group 1 output level) 2. Grou p 2 V U Meter (Group 2 output level) 3. Group 3 VU Meter (Group 3 output level) 4. Group 4 VU Meter (Group 4 output level) METER PANEL ( RXM-7-43) 5.
1 . AC Fuse The f us e should be replaced with one o f identical value and type. 2. Pilot Lamp 3. Power Switch Pushbutton alternately s w itches AC p ow er o n and of f. 4. D C output connector With the accessory umbilical cable, t he DC ou tp ut i s connected to the PSM -7 (Power Supply Module).
General Information o n using th e mixing console * Impedance Generally speaking, there ar e two rules to follow when connecting equipment o utp uts to the inputs o f other equipment. 1 . T ry to properly match the impedances o f the outputs an d i nputs.
* Ground loops AC ground i s provided to the RX-7 and al l associated equipment, an d this may cause an increase in h u m noise if care is not taken in connecting other equipment to the mixer. This is because a ground loop is m ade through the shields of th e connection cable and the AC line as shown in F i g.
The RX-7 i s a sophisticated mixer with many functions. Details on important functions a r e shown below in order f o r you to get the best operation and performance an d al s o t o avoid mistakes in operation.
The tri m control changes the negative feedback volume, so that the ga in o f the head amp can al so be changed. T HI S FUNCTIONS T O YIELD TH E B E S T COMBINATION OF MAXIMUM HEADROOM AND MINIMUM NO IS E CHARACTERISTICS.
* Equalizers The RX-7 equalizers provide lo w and hig h frequency shelving and mid-range peaking, both boost a nd attenuation. T h e m id-range E Q center frequency c a n b e s e t a t a ny frequency between 200Hz a nd 5kHz w it h a continuously variable frequency knob.
INSTRUMENT EQUALIZATION CHART Acoustic guitar Electric guitar Ba s s guitar Human voice Piano (Acoustic) Piano (Electric) Organ Violin Brass in st r u m ents Bass d r um Snare dr u m Tom Tom Floor Tom Hi Hat Cymbal overhead Talk Box Bass strings resonate between 7 0 to 120Hz, b od y around 300Hz.
* Equalizer IN/OUT Sw it ch Precise equalizer adjustment c a n b e ma de w hile comparing th e equalized sound ef fe c t wit h the flat sound by use o f the Equalizer IN/OUT switc h. *Foldback 1, 2 an d Echo 1 , 2 Th e block diagram indicates the overall signal f lo w of th e FB and Echo circuits.
* R X - 7 Signal Flow Th e overall signal flow of t he RX-7, f r o m input to output, i s shown below. (Fig. 21) — 29 —.
*Air Monitor (Ceiling Microphones) In some cases t he mixer control roo m i s independent from th e hall requiring sound reinforcement, but the mixer operator must monitor the sound in the hall for mixer operation.
Portable Entertainment Sound Reinforcement Set-Up TOA's R X -7 consoles are designed to help out when you're out on th e road. We're sure you'll find j u s t the r ig ht set-ups f o r each show, but we w anted to s how o ne wa y i t migh t be done.
Multi-Track Recording or Track-Down The TOA RX - 7 series of mixing consoles allows better recordings as w ell a s better concerts. F or multi-track recording, direct outputs o n ea ch input channel can be connected to multi-channel recorder inputs.
How t o remove modules 1 . Remove the armrest from th e cabinet in the following manner. *Pu t both hands under the armrest and lift it straight up to remove. (Fig. 24) 2. Loosen t he t wo captive screws on th e front o f the meter panel and lif t panel straight up.
(Fig. 26) 3 . Rem ove the tw o binding screws on each module. Put your fingers i n the two holes o n t h e to p a nd bottom o f th e module and lift t he module straight up to remo ve it from the cabinet.
1 . Input M odules (IPM-7) 2 . Group/Foldback Modules (GFM-7) 3 . Group/Echo Modules (GEM-7) 4. Program Modules (PGM -7) 5 . Phones Module (PHM-7) 6 . Talkback Module (TBM-7) 7 . Power Supply Module (PSM-7) 8 . VU Meters for Group and Program Outputs (Switchable) (Fig.
1 . Input M odules (IPM-7) 2 . Group/Foldback Modules (G FM-7) 3 . Group/Echo Mo du le s (G EM-7) 4 . Program Modules (PG M-7 ) 5 . Phones Module (PHM -7) 6 . Talkback Module (TBM-7) 7 . Power Supply Module (PSM-7) 8 . VU Meters for Group Outputs 9 . VU Meters fo r Program Outputs ( 1— 5 , 2—6, 3—7, 4 —8 Switchable) 1 0 .
RX-7-328 APPEARANCE (Fig. 29) 1. 2. 3. 4. 5. 6. 7. 8. 9. Input Modules (IPM-7) Group/Foldback M odules (GFM-7) Group/Echo Mo du l es (G EM-7) Program Modules (PGM-7) Phones Module (PHM-7 ) Talkback Module (TBM-7) Power Supply Module (PSM-7) VU Meters fo r G roup Outputs VU Meters fo r Program Outputs (1 —5 , 2—6, 3—7, 4—8 Switchable) 10.
1. 2. 3. 4. 5. 6. 7. 8. Armrest Bus Chassis Wood Sid e Panel Metal Si d e Panel Main Rear Panel Meter Panel VU Meters f or Group an d Program Outputs (Switchable) VU Meters f or Foldback and Echo Outputs (Switchable) 9.
RXM-7-35 APPEARANCE (Fig. 31) 1. 2. 3. 4. 5. 6. 7. 8. Armrest Bus Chassis Wood Si d e Panel Metal S i d e Panel Main Rea r Panel Meter Panel VU Meter fo r Group Outputs VU Meter fo r Program Outputs (1 — 5, 2—6 , 3—7, 4 —8 Switchable) 9. 10. 11.
RXM-7-43 APPEARANCE 1 . Armrest 2. Bus C hassi s 3 . Wo od S i d e Panel 4. Metal Side Panel 5 . Main Re ar Panel 6 . Meter Panel 7 . VU Meters f o r Grou p Outputs 8 . VU Meters fo r Program Outputs (1—5, 2—6, 3—7, 4— 8 Switchable) 9 . VU Meter f o r Foldback 1 1 0 .
RPS-7 APPEARANCE (Fig. 33) 1 . AC F use Holder 2. Power On/Off Indicator 3 . Power On/Off Switch 4. D C Power Output Connector 5 . Ground Ter min al 6 .
Block Diagram (Fig. 34) — 42 —.
T O A ELECTRIC CO., LT D. KO B E , JAPAN Printed i n Japan 133-02-476-20.
An important point after buying a device Toa RX-7-248 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Toa RX-7-248 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Toa RX-7-248 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Toa RX-7-248 you will learn all the available features of the product, as well as information on its operation. The information that you get Toa RX-7-248 will certainly help you make a decision on the purchase.
If you already are a holder of Toa RX-7-248, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Toa RX-7-248.
However, one of the most important roles played by the user manual is to help in solving problems with Toa RX-7-248. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Toa RX-7-248 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
