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FrontRow ToGo Portable Sound Field System

for Educational Institutions, Corporate Trainers, Parks and Recreation

The FrontRow ToGo can handle crowds up to 150 people. Because setup is simple and wireless, multiple FrontRow speakers can be added for increased coverage. The FrontRow ToGo is formerly known as Radium portable sound field system. All accessories listed in the shopping cart are fully compatible with the Radium 920SR speaker. Transmitter channels are not compatible with the older Radium model 915SR speaker systems.

FrontRow ToGo Packages and Accessories

  •          FrontRow ToGo 925 SYS-216         
  •     Accessories    
Click to enlarge Frontrow ToGo Sound Field System

FrontRow ToGo 925SYS-216 Standard Package includes:

For RFQ call 888.736.6005 or email rfq.centrumsound.com

(1) 925RS line array speaker w/power cord
(1) 925T Body-pack transmitter
(1) BTN Behind the neck boom microphone
(1) Table stand
(1) Wall mount bracket
(1) 925C Two-unit charger w/AC adaptor
(1) RDS-ACC FrontRow accessories kit

To view optional accessories, click on Accessories tab above.

Price: $999  
Wireless Mic 1 Optional Mic 2    Qty:   

FrontRow ToGo 2-channel wireless speaker system 925RS Kit Speaker with two wireless receivers.
Add one or more wireless speakers for added coverage (must be within 100 ft range of transmitter). Includes antenna, power cord, table stand and wall-mount bracket.
Qty: Price: $825
FrontRow - Radium wireless handheld microphone 925H FrontRow/Radium Wireless handheld microphone (same as 922T).
Easy to pass along wireless microphone. Includes two NiMH AA size rechargeable batteries.
Qty: Price: $198
FrontRow - Radium wireless body-pack transmitter 925T FrontRow/Radium Wireless body-pack transmitter (same as 921T).
Includes two NiMH AA size rechargeable batteries. BTN and/or DLM microphones are sold separately.
Qty: Price: $198
BTN Behind-the-neck boom microphone BTN Behind-the-neck boom microphone
FrontRow standard microphone as included with 925SYS-216 package (2.5 mm plug). Manufacturer's part #  890-88-300-00
Qty: Price: $89
DLM Directional lapel microphone DLM Directional lapel microphone with clip. 2.5 mm plug. Reduced feedback margin with this option. Wind screens are sold separately. Manufacturer's part #  890-52-380-00
Qty: Price: $89
Wind screen for Headset microphone BTN-WND Wind Screen, 6-pack
Fits above BTN and DLM microphones. Manufacturer's part # 890-88-306-00.
Qty: Price: $29
AT0824 Floor stand AT0824 FrontRow/Radium Tripod floor stand
Sturdy collapse-able tripod stand. Stands 53" tall (20" collapsed). Fits in carry bag.
Qty: Price: $169
FrontRow ToGo Carry Bag 925BAG FrontRow ToGo Carry Bag
Holds complete system incl. tripod. Manufacturer's part #  895-88-025-00
Qty: Price: $60
925C 2-Unit Microphone Charging Cradle 925C 2-Unit Microphone Charging Cradle
Charges two transmitters (any combination handheld/body-pack). Includes power supply AT0819.
Qty: Price: $75

2300 mAh SmartCharge battery

AA-BATT-X2 2300 mAh SmartCharge battery, 2-Pack.
Qty: Price: $15

Battery cover 925H-BATC Replacement battery cover for models 922T and 925H.
Manufacturer's part # 900-7402-176.
Qty: Price: $6
Battery cover 925T-BATC Replacement battery cover for models 921T and 925T.
Manufacturer's part # 900-7402-165.
Qty: Price: $5
Belt-pack clip 925T-CLIP Replacement clip for 916T, 921T and 925T.
Manufacturer's part # 330-7402-103.
Qty: Price: $5
Antenna for 925RS AT0831 Replacement antenna for 925RS
Qty: Price: $12
Power cord for 925RS 925RS-PC Replacement power cord for 925RS, 6 ft (third-party product).
Qty: Price: $15
Replacement battery for 925RS 925-BAT Replacement battery for 925RS. Manufacturer's part #  374-88-010-00
Qty: Price: $131

Free shipping Continental US for orders over $50      

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All about FrontRow ToGo portable soundfield system

Free Shipping Continental US on orders over $50

  • Description
  • Features
  • Tech Data
  • Warranty
  • "How to" Videos
  • Printouts

The FrontRow ToGo is a totally wireless portable PA soundfield system. Therefore, it is not only perfect for amplification in classrooms but also suitable for general PA applications in areas that are not equipped with a house PA. It can be placed on a tabletop or put on a floor stand. FrontRow UserEither way, set up is fast, simple, and convenient. The FrontRow ToGo is supplied with a pair of wall brackets for permanent installation. A quick release design lets you take it off the wall in seconds and place it on a table stand (also included) or an optional floor stand.

The FrontRow ToGo wireless PA system features two built-in FM receivers operating in the 216 MHz band. Each receiver has eight user selectable channels for a total of 16 different frequencies. That means two instructors can teach using two hands-free wireless body-worn transmitters or two handheld microphones simultaneously. Or, use a combination of  one instructor's wireless body-worn transmitters and a hand-held microphone transmitter to pass around between the students.

FrontRow ToGo provides up to 6.5 hours of completely wireless operating time. When done, just drop the wireless microphone transmitter into the chargerFrontRow ToGo wireless sound field systems control panel (click to enlarge) and connect the charging transformer to the loudspeaker. It can't get any simpler than that. In the event of longer scheduled presentations, the wireless loudspeaker may be powered while it charges. Transmitters can operate for more than 12 hours on a six hour charge but can also operate on regular AA size alkaline batteries.

The FrontRow ToGo high-quality directional loudspeakers provide full, clear sound. A separate volume control for each channel, an adjustable tone control, plus a volume control for the auxiliary input port gives teachers control over the classroom auditory experience. MP3/CD players, TV or sound from other audiovisual sources can easily be mixed in via the input port. An audio jack with a High/Low level switch provides audio output to recorders or other transmitters for re broadcasting to other FrontRow loudspeakers or assistive listening devices.

The column speaker technology applied in the FrontRow ToGo sound system takes advantage of the effects of cancellationRadium wireless sound field system reinforcement chart and reinforcement that occur when spacing two loudspeaker cones a precise distance apart (phase angling). Because the FrontRow ToGo speakers are phase angled, sound cancellation occurs at the top and bottom of the speaker enclosure. This reduces the amount of sound reflecting off the floor and ceiling and therefore reduces reverberation. In addition, reinforcement occurs at the center of the FrontRow ToGo speaker. The sound energy that would ordinarily bounce off the ceiling and floor is directed in front of the speaker. This means that the sound from the FrontRow ToGo speakers drops only 4dB for every doubling of distance up to about 7m giving twice the audibility of a conventional speaker at the back of the classroom.

  • All-in-one system — receiver, speaker and battery integrated into one unit
  • Installation-free — table stand or easy-install wall mount options
  • SmartCharge fail-safe charging
  • Completely portable — take it outside!
  • Excellent sound quality and room coverage
  • Intuitive controls and easy to operate
  • OptiVoice Enabled (click on OptiVoice for short presentation)
  • Lead-free construction (RoHS compliant)
  • Dual FM receiver allows two transmitters to be used at once
  • Auxiliary audio input for connectivity to other media
  • Auxiliary audio output for connectivity to personal FM devices for the hearing impaired










925RS Dual-Receiver Column Speaker
  • Carrier Frequency Range 216.025 - 216.875 MHz
  • Modulation: FM (F3E)
  • Output Power: Maximum 36W RMS @ 4Ω x 2
  • Power requirements: AC 110-200V, ~50-60Hz, 1A max
  • Battery: NiMH rechargeable
  • Frequency response: 100Hz-9kHz (at rated output)
  • Total harmonic distortion: <1% (at rated output) @ 1kHz
  • System signal-to-noise ratio: >70db (at rated output)
  • Input: 1 x aux-in, 3.5mm mono
  • Output: 1 x aux-out, 3.5mm mono
  • Controls: Channel A/B on/off/volume, Channel A/B channel selector
    Aux-in volume , Aux-out volume, OptiVoice, Main power
  • Dimensions (wxdxh): 7.2 x 3.4 x 29.5 in, 183 x 85 x 750 mm
  • Weight: 12.5 lbs. / 5.7 kg
  • Battery operating time 6.5 hours (rechargeable)
  • Recharging time 8 hours

925T Belt-Pack Transmitter
  • Carrier frequency range: 216.025 - 216.875 MHz
  • Modulation: FM (F3E)
  • Operating Range: >110ft. / 34m
  • RF Output: <15mW
  • Total harmonic distortion: <0.5%
  • Dynamic range: 100dB
  • Dimensions (wxhxd): 2.5x3.5x1in/65x90x25mm
  • Weight: 1.8oz/51g
  • Controls: on/mute/off/channel selector
  • Input/output: 2.5mm microphone input jack
  • Battery type: 2 AA NiMH rechargeable (1600mA) or 2 AA alkaline disposable
  • Battery life: NiMH rechargeable typically12 hours, disposable alkaline typically15 hours
  • Recharging time: 6 hours

925H Hand-held Microphone/Transmitter
  • Carrier frequency range: 216.025 - 216.875 MHz
  • Modulation: FM (F3E)
  • Operating Range: >110ft. / 34m
  • RF Output: <15mW
  • Total harmonic distortion: <0.5%
  • Dynamic range: 100dB
  • Dimensions (dia. x h): 2.1 x 9.3 in / 54 x 237mm
  • Weight: 8.1 oz. / 230g
  • Controls: on/mute/off/channel selector
  • Battery type: 2 AA NiMH rechargeable (1600mA) or 2 AA alkaline disposable
  • Battery life: NiMH rechargeable typically12 hours, disposable alkaline typically15 hours
  • Recharging time: 6 hours

925C Charging Stand
  • Power supply: AC adaptor (DC 12V / 0.5A)
  • Indicator light: LED green = battery ready, LED red = charging, LED flashing red = charging error
  • Recharging time: NiMH (1600mA), 6 hours
  • Dimensions (WxHxD): 9 x 1.9 x 5.3in / 230 x 47 x 135mm
  • Weight: 360g / 12.7oz


Subject to the conditions, exclusions and limitations described below, PHONIC EAR INC., acting through its FrontRow division (collectively, “FrontRow”), warrants to the original end user purchaser (“Customer”) that each FrontRow Active Learning System product (the “Product”), when operated and maintained according to the instructions attached to or furnished with the Product, will be free from defects in materials and workmanship under normal use, and agrees that it will, at its option, either repair any such defect or replace the nonconforming Product or part thereof with an equivalent replacement product or part at no charge to the Customer for parts or labor for the period(s) set forth below.

5-Year Limited Warranty. The above Warranty covers FrontRow Active Learning System components (transmitters, receivers, IR sensors, speakers and charging stands) for a period of FIVE (5) years beginning on the date of purchase by the Customer.

1-Year Limited Warranty. The above Warranty covers rechargeable batteries, power cords, power supplies, microphones, antennas and other accessories for a period of ONE (1) year beginning on the date of purchase by the Customer.

CONDITIONS. This Warranty is subject to the following conditions and restrictions:
• The Product must have been purchased from an authorized FrontRow Dealer or sales representative.
• FrontRow or an authorized Dealer must have performed all warranty service. Any service performed without the authorization of FrontRow or an authorized Dealer will void this entire Warranty.
• This Warranty does not cover any Product that has been subjected to abuse, misuse, alteration, neglect, unauthorized repair or installation, connection to an improper power source, operation beyond its manufactured specifications and limits, or subjected to improper site, preparation or maintenance not in accordance with manufacturer’s instructions.
• This Warranty is void if the Product has been subjected to adverse temperature, humidity or moisture, or otherwise operated outside its specified environment.
• This Warranty does not cover the finish or non-functional appearance of any Product.


For specific warranty information and/or additional extended service agreements, download:

FrontRow Limited Warranty
FrontRow Comprehensive Service Guide.







The following PDF documents are available for downloading and printing:


FrontRow ToGo Technical Data

FrontRow ToGo User Manual

Radium 920 User Manual

FrontRow Warranty Statement

FrontRow Comprehensive Service Guide