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    • Amplifier Guide  •  Speaker Wire Gauge  •  Wireless Comparison Table  •  Calculating Wattage  •  Accessory Reference 

 

 

 

 

Amplifier Selection Guide

    Inputs Outputs  
Model Number Power MIC AUX TEL MODULE 70V 25V Record/
Bridge/
Line
Pre-Amp MOH Rack
Ears
A-2060CU
A-2120CU
A-2240CU
60W
120W
240W
2 2 1   Yes Yes Yes   Yes     No
A-812D
A-824D
A-848D
120W
240W
480W
6 Opt. 1 2 (900
Series)
Yes   Yes Yes Yes Yes   Opt.
A-903MK2
A-906MK2
A-912MK2
30W
60W
120W
8 Module Slots 8 (900
Series)
Yes Yes Yes Yes Yes Yes Opt. Opt.
A-9060DHM2 
A-9060SM2 
A-9120DHM2 
A-9120SM2
A-9240SHM2
60W x 2
60W x 2 120W x 2
120W 
240W
8 Module Slots 8 (9000
Series)
Yes Yes
  
Yes
3 Dual Module
Slots
Yes Yes
  
Yes
Yes
  
Yes
Yes Yes
AV-20D 
AV-60S
20Wx2
60W
3   Yes   Yes   Yes      
BA-235
BA-260
35W
60W
1   Yes Yes Yes   Yes   Yes Opt.
BG-220
BG-235
20W
35W
1 2
(3)**
    Yes Yes Yes   Yes   Yes Opt.

BG-2035
BG-2060
BG-2120
BG-2240D
BG-2480D

35W
60W
120W
240W
480W
1 2
2(3)**
1 1 (900
Series)
Yes

Yes

 

Yes  

Yes

 

  Yes Opt.
CA-115
CA-130
CA-160
15W
30W
60W x 2
2

1

            Yes Yes   No
DA-150EH
DA-250F
DA-250FH
DA-250D
DA-250DH
DA-500F-HL
DA-550F
See DA
power
output
chart
below
  4
4
2
2
4
4
    Yes

Yes
Yes

      Yes

Yes

Yes

Yes

Yes

Yes

  Yes
MA-725F-AM
MM-700F-AM
250W x 4  2 4     Yes   Yes Yes     Yes Yes
P-906MK2
P-912MK2
P-924MK2
60W
120W
240W
  1   1 (900
Series)
Yes Yes     Yes Yes Opt. Opt.
P-9060DH
P-9120DH
60W x 2 120Wx2   2     Yes             Yes

*Transformer-Isolation for Telephone Paging Applications (Input #1)
** Selectable

 

 

DA  AMPLIFIER POWER OUTPUT CHART
MODEL POWER OUTPUT
DA-150EH 8 X 150W (70V)
DA-250D 2 X 250W (4Ω)
2 X 170W (8Ω)
1 X 500W Bridged (8Ω)
DA-250DH 2 X 250W (70V)
1 X 500W Bridged (140V)
DA-250F 4 X 250W (4Ω)
4 X 170W (8Ω)
2 X 500W Bridged (8Ω)
DA-250FH 4 X 250W (70V)
2 X 500W Bridged (140V)
DA-500F HL 4 X 250W (70V)
2 X 1000W Bridged (140V)
4 X 550W (8Ω)
4 X 100W (4Ω)
2 X 1100W (16Ω)
DA-550F 4 X 550W (4Ω)
4 X 350W (8Ω)
2 X 1100W Bridged (8Ω)

 


 

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Maximum length of speaker wire for a 70 Volt line

 

Power Loss in Cable (%Loss & dB Loss)
  4Ω Speaker 8Ω Speaker 70V Speaker*
  11% 21% 50% 11% 21% 50% 11% 21% 50%
AWG 0.5 1.0 3.0 0.5 1.0 3.0 0.5 1.0 3.0
6 277ft 571ft 1930ft 554ft 1141ft 3859ft 13580ft 27965ft 945848ft
8 174ft 359ft 1214ft 349ft 718ft 2428ft 8546ft 17598ft 59498ft
10 110ft 226ft 764ft 219ft 452ft 1528ft 5377ft 11072ft 37434ft
12 69ft 142ft 480ft 138ft 284ft 959ft 3376ft 6952ft 23505ft
14 43ft 89ft 302ft 87ft 179ft 604ft 2127ft 4380ft 14809ft
16 27ft 55ft 185ft 53ft 110ft 371ft 1305ft 2687ft 9085ft
18 17ft 35ft 117ft 34ft 69ft 234ft 823ft 1694ft 5726ft
20 11ft 22ft 74ft 21ft 44ft 147ft 518ft 1068ft 3610ft
22 7ft 13ft 46ft 13ft 27ft 91ft 321ft 661ft 2234ft
24 4ft 9ft 29ft 8ft 17ft 57ft 202ft 417ft 1409ft

*The maximum length of speaker wire for a 70V line depends on the gauge of wire being used. Below you
will find a chart with different gauges and their maximum length for use in a 70V system.


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Wireless Comparison Table

 

 
  WT-5800 WT-5805 WT-5810 WT-4820 S5.3 S4.10 S2.4
  UHF 5000 Series UHF S Series Digital S Series
Wireless Kits Build the system Build the system WS-5225 (RX / TX HH / Uni)
WS-5265 (RX / TX HH / Dyn / Uni)
WS-5325U (RX / TX BP / Lav / Uni)
WS-5325M (RX / TX BP / Lav/Omni)
WS-5325H (RX / TX BP / HdWorn)
Build the system S5.3-HD (RX / TX HH / Dyn)
S5.3-HC (RX / TX HH / Dyn)
S5.3-L (RX / TX BP / Lav)
S4.10-HD (RX / TX HH / Dyn)
S4.10-L (RX / TX BP / Lav)
S2.4BBX (RX2 / TX BP x 2)
S2.4HHX (RX2 / TX HH x 2)
S2.4HBX (RX2 / TX BP, HH)
S2.4BX (RX1 / TX BP) S2.4HX
(RX1 / TX HH)
System Tuners WT-5800 (RX) WT-5805 (RX) WT-5810 (RX) WT-4820* (RX) S5.3 (RX) S4.10 (RX) S2.4 (RX1) S2.4 (RX2)
System Components WM-5225 (TX HH / Uni
WM-5265 (TX HH / Uni / Dyn
WM-5270 (TX HH / Uni / Dyn
WM-5325 (TX BP / Lav
YP-M5300 (Lav / Uni)
YP-M5310 (Lav / Omni)
YP-M5000E (Ear Hook / Omni)
YP-5000H (Headset / Omni)
WH-4000H (Headset / Uni)
WH-4000A (Headset / Uni)
Q-HM-22 (HdWorn / Omni)
WM-5225 (TX HH / Uni
WM-5265 (TX HH / Uni / Dyn
WM-5270 (TX HH / Uni / Dyn
WM-5325 (TX BP / Lav
YP-M5300 (Lav / Uni)
YP-M5310 (Lav / Omni)
YP-M5000E (Ear Hook / Omni)
YP-5000H (Headset / Omni)
WH-4000H (Headset / Uni)
WH-4000A (Headset / Uni)
Q-HM-22 (HdWorn / Omni)
WM-5225 (TX HH / Uni
WM-5265 (TX HH / Uni / Dyn
WM-5270 (TX HH / Uni / Dyn
WM-5325 (TX BP / Lav
YP-M5300 (Lav / Uni)
YP-M5310 (Lav / Omni)
YP-5000E (Ear Hook / Omni)
YP-5000H (Headset / Omni)
WH-4000H (Headset / Uni)
WH-4000A (Headset / Uni)
Q-HM-22 (HdWorn / Omni)
WM-5225 (TX HH / Uni
WM-5265 (TX HH / Uni / Dyn
WM-5270 (TX HH / Uni / Dyn
WM-5325 (TX BP / Lav
YP-M5300 (Lav / Uni)
YP-M5310 (Lav / Omni)
YP-M5000E (Ear Hook / Omni)
YP-5000H (Headset / Omni)
WH-4000H
(Headset / Uni)
WH-4000A (Headset / Uni)
Q-HM-22 (HdWorn / Omni)
S5.3-HDX (TX HH / Dyn)
S5.3-HCX (TX HH)
S5.3-BTX (TX BP / Lav)
MIC-X2 (Lav)
MIC X55 (Lav)
MIC X212 (BK/BE-Lav)
MIC X33 (HdWorn)
MIC X66-BK/BL/YE (Hdband) MIC X22-BK/BE (HdWorn)
MIC XEM77 (Single Ear)
MIC-X690H (Glasses Mic)
S4.10-BTX (BP / Lav)
S4.10-HDX (HH / Dyn)
MB-S4RX-5-EB
MIC-SJ33-BK (HdWorn)
MIC-SJ66-BK/BL/YL (Hdband)
MIC-SJ22-BK/BE (HdWorn)
MIC-SJEM77 (Single Ear)
MIC-SJ690H (Glasses Mic)
MIC-LP2 (Lav)
MIC-SJ55 (Lav)
MIC-SJ212-BK/BE (Lav)
S2.4HDX (TX, HH)
S2.4BTX (TX, BP / Lav)
S2.4LMO (Lav / Omni)
S2.4HMO (HW / Omni)
S2.4HMU (HW / Uni)
System Accessories YW-4500 (Antenna)
WD-5800 (Antenna Dist.)
MB-WT3 (Brkt single)
MB-WT4 (Brkt dual)
BC-5000-2 (Chrgr) BC-5000-6 (Chrgr)
BC-5000-12 (Chrgr)
AD-5000-2 (Adapter)
AD-5000-6 (Adapter)
WB-2000-2 (Battery)
YW-4500 (Antenna)
WD-5800 (Antenna Dist.)
MB-WT3 (Brkt single)
MB-WT4 (Brkt dual)
BC-5000-2 (Chrgr)
BC-5000-6 (Chrgr)
BC-5000-12 (Chrgr)
AD-5000-2 (Adapter)
AD-5000-6 (Adapter)
WB-2000-2 (Battery)
BC-5000-2 (Chrgr)
BC-5000-6 (Chrgr)
BC-5000-12 (Chrgr)
AD-5000-2 (Adapter)
AD-5000-6 (Adapter)
WB-2000-2 (Battery)
WTU-4800 (Module)
YW-4500 (Antenna)
WD-5800 (Antenna Dist.)
MB-WT3 (Brkt
single)
MB-WT4 (Brkt, dual)
BC-5000-2 (Chrgr)
BC-5000-6 (Chrgr)
BC-5000-12 (Chrgr)
AD-5000-2 (Adapter)
AD-5000-6 (Adapter)
WB-2000-2 (Battery)
YW-4500 (Antenna)
WD-5800 (Antenna Dist.)
MB-15B-BK (Brkt, Single)
MB-15B-J (Brkt, dual)
ACC-S5RX-MB2 (Brkt)
Battery AA Alkaline
YW-4500 (Antenna)
WD-5800 (Antenna Dist.)
MB-S4RX (Brkt)
Battery AA Alkaline
RX2 (Brkt included)
Battery AA Alkaline
Channel Selectable 64 selectable frequencies 64 selectable frequencies Up to 16 selectable frequencies Up to 16 selectable frequencies Up to 12 selectable frequencies Up to 16 selectable frequencies Up to 16 selectable frequencies
Price $$$$ $$$$ $$$ $$ $$$$$ $ $$
Receiving Frequency M Band: 506 - 538 MHz H Band: 576 - 606 MHz M Band: 506 - 538 MHz H Band: 576 - 606 MHz M Band: 506 - 538 MHz H Band: 576 - 606 MHz M Band: 506 - 538 MHz H Band: 576 - 606 MHz H Band: 576 - 606 MHz M Band: 506 - 538 MHz 2.404-2.474 GHz 
Power Source AC mains (supplied AC adapter must be used) AC mains (supplied AC adapter must be used) AC mains (supplied AC adapter must be used) AC mains (supplied AC adapter must be used) 230 V AC, 50 Hz (optional AC adapter must be used) 11-18 VDC 300 mA 12VDC 0.5A
Diversity System True diversity Space diversity Space diversity Space diversity (WTU-4800) Space diversity (true diversity) Space diversity N/A
Power Consumption 200 mA (12 V DC) 250 mA (12 V DC) 130 mA (12 V DC) 250 mA (12 V DC, when operating with two tuner modules*) 300 mA (13 V DC) N/A 2W
Receiving Sensitivity 90 dB or more, Signal to Noise ratio (20 dBμV input, 40 kHz deviation) 90 dB or more, Signal to Noise ratio (20 dBμV input, 40 kHz deviation) 90 dB or more, Signal to Noise ratio (20 dBμV input, 40 kHz deviation) 80 dB or more (WTU-4800) 0 dBµV or less (12 dB SINAD) 10uV at 45 dBA S/N -80dBm
Squelch Sensitivity 16 - 40 dBμV variable 16 - 40 dBμV variable 16 - 40 dBμV variable 18 dBµV (WTU-4800) 6 - 36 dBµV variable N/A N/A
Receiving System Double super-heterodyne Double super-heterodyne Double super-heterodyne N/A Double super-heterodyne N/A N/A
Mixing Output MIC/LINE (selectable): -60 dB (MIC)/-20 dB (LINE), 600 Ω, phone jack (unbalanced), 600 Ω XLR-3-32 type connector (balanced) MIC/LINE (selectable): -60 dB (MIC)/-20 dB (LINE), 600 Ω, phone jack (unbalanced), 600 Ω XLR-3-32 type connector (balanced) MIC: -60 dB, 600 Ω, balanced, XLR-3- 32 type connector, LINE: -20 dB, 600 Ω, unbalanced, phone jack Mixing/Channel 1 (selectable): -20 dB (+6 dB) Max.), 600 Ω, unbalanced, phone jack, - 14 dB (+12 dB Max.) 600 Ω, balanced, XLR-3-32 type connector Channel 2: -20 dB (+6 dB Max.), 600 Ω, unbalanced, phone jack LINE: -22 dB/MIC: -62 dB - 28 dB*, 600 0, unbalanced, phone jack LINE/MIC selectable, 600 0, balanced, XLR-3-32 type connector Headphone: max. 100 mW 16 0, unbalanced, phone jack Balanced (XLR socket): -16 dB Unbalanced (1/4" jack socket) : 10 dBu 20 dB (LINE), 600 Ω, phone jack (unbalanced), 600 Ω XLR3-32 type connector (balanced)
Mixing Input -20 dB, 10 kΩ, unbalanced, phone jack -20 dB, 10 kΩ, unbalanced, phone jack -20 dB, 10 kΩ, unbalanced, phone jack -20 dB, 10 kΩ, unbalanced, phone jack N/A N/A N/A
Antenna Whip antenna x2 Whip antenna x2 Rod antenna x2 Whip antenna x2 Whip antenna x2 Whip antenna x2 Whip antenna x2
Antenna Input 75 Ω, BNC (phantom powering for antenna),
9 V DC, 30 mA (max)
75 Ω, BNC (phantom powering for antenna),
9 V DC, 30 mA (max)
N/A 75 Ω, BNC (phantom powering for antenna),
9 V DC, 30 mA (max)
50 Ω, BNC N/A N/A
Antenna Output 75 Ω, BNC (Gain 0 dB) N/A N/A 75 Ω, BNC (Gain 0 dB) N/A N/A N/A
Squelch System Tone SQ, Carrier SQ, Noise SQ Tone SQ, Carrier SQ, Noise SQ Tone SQ, Carrier SQ, Noise SQ N/A Tone SQ, Carrier SQ, Noise SQ Tone SQ, Carrier SQ, Noise SQ N/A
Tone Frequency 32.768 kHz 32.768 kHz 32.768 kHz N/A 32.768 kHz N/A N/A
Indicator Audio (6 step), RF (6 step), ANT A/B, Audio (peak), Battery alarm Audio (6 step), RF (6 step), ANT A/B, Audio (peak), Battery alarm ANT A/B, Audio (peak), Battery alarm, Channel number ANT A/B, Audio (peak), Power L LCD, Power lamp, Mute lamp, ANT A/B lamp N/A LCD
Model Feature N/A N/A N/A *Accepts up to two WTU-4800 Tuner Units N/A N/A *Single or Dual receiver
Channel Check Usable frequencies scanning Usable frequencies scanning Usable frequencies scanning N/A N/A N/A N/A
Signal to Noise Ratio 110 dB or more (A-weight, unbalanced output) 110 dB or more (A-weight, unbalanced output) 104 dB or more (A-weight, unbalanced output) 102 dB or more (A-weight, unbalanced output) 110 dB or more ( A-weight) N/A >95dB
Harmonic Distortion 1 % or less (typical) 1 % or less (typical) 1 % or less (typical) 1 % or less (typical) 1 % or less (typical) 1 % or less (typical) 1 % or less (typical)
Frequency Response 100 Hz - 15 kHz, ±3 dB 100 Hz - 15 kHz, ±3 dB 100 Hz - 15 kHz, ±3 dB 50 Hz - 18 kHz, ±3 dB 50 Hz - 20 kHz, ±3 dB 50 Hz - 15 kHz N/A
LCD Display Two-line LCD display Two-line LCD display ANT A/B, Audio (peak), Battery alarm, Channel number ANT A/B, Audio (peak), Power Two-line LCD display ANT A/B, Audio (peak), Channel number ANT A/B, Audio (peak), Channel number, Frequency
Included AC adapter x1, Whip antenna x2, Rubber foot x 4 AC adapter x1, Whip antenna x2, Rubber foot x 4 AC adapter x1 AC adapter x1, Whip antenna x2, Rubber foot x 4 CD ( PC Monitoring Software) x1 AC Adapter x 1, Microphone Holder W5/16" x 1 N/A
Rack Ears Mounting bracket kit: MB-WT3 single MB-WT4 dual Mounting bracket kit: MB-WT3 single MB-WT4 dual N/A Mounting bracket kit: MB-WT3 single MB-WT4 dual MB-15B-BK – single receiver; MB-15B-J - two receivers 19" Rack Mount Kit: MB-S4RX-5- EB ACC-S2.4 Rack Mount Kit
Finish Resin, black Resin, black Resin, black Resin, black Chassis: Steel, dark gray, painting Front panel: Anodized aluminum, silver Resin, coating Resin, black
Dimensions 210 (W) × 44 (H) × 205.1 (D) mm
(8.27" × 1.73" × 8.07")
210 (W) × 44 (H) × 205.1 (D) mm
(8.27" × 1.73" × 8.07")
206 (W) × 40.6 (H) × 152.7 (D) mm
(8.11" × 1.6" × 6.01") (excluding antenna)
210 (W) × 44 (H) × 181 (D) mm
(8.27" × 1.73" × 7.13")
210 (W) X 46 (H) X 210 (D) mm
(8.27" X 1.81" X 8.27") (excluding antenna)
215 (W) x 39 (H) x 102 (D) mm
(8.47" X 1.54" X 4.02")
213 (W) X 41.9 (H) X 133.3 (D) mm
(8.38" x  1.65" x  5.25")
Weight 700 g (1.54 lb.) 700 g (1.54 lb.) 590 g (1.3 lb.) 770 g (1.71 lb.) 1.3 kg. (2.87 lb.) 480g (1.1 lb.) Single: 1.4 kg (3.1 lb.)
Dual: 1.6 kg (3.5 lb.)

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Technical Information

Calculating Wattage Required

 
It is fairly easy to calculate the on axis amount of power required to a speaker if we understand and apply a few basic principles.  
Sensitivity Power Increase vs SPL Loss of Sound Pressure over Distance Typical Sound Levels

This rating given to all speakers indicates how efficient it is at converting power (wattage) into sound. This rating is expressed as Sens dB= 1 watt / 1 meter. Typical ratings are 90dB for 1 watt at 1 meter distance. What this implies is that if one watt of power is delivered to the speaker, the speaker will produce 90dB of sound pressure at a one meter distance from the speaker.

This distance is our reference distance. Of interest for ceiling speakers, the reference distance is approximately ½ meter from a person seated in an office with a typical ceiling height of 2.6 meters (8.5 feet). Therefore, in general, one or two watts is all that is needed in a typical office or training room scenario with a normal ceiling height of 8–9 feet.

When we increase the power delivered to the speaker, the amount of sound pressure, measured in dB, will also increase. The rate of increase for a standard speaker in free space is 3 dB for every doubling of power.

Speaker example above has a Sensitivity rating of 90dB=1W/1M, one watt would produce 90dB at reference. If we increase the wattage to 2 watts (doubled) our speaker would produce 93dB at reference. Doubling this again to 4 watts would produce 96dB at reference

Our typical speaker above will have a perceived loss of sound pressure level as we move away from the speaker. For a free space environment this loss occurs at 6dB for every doubling of distance. As an example, our speaker above is driven with 8 watts of power. Since the speaker has a sensitivity of

90dB/1W/1M, at reference this speaker will be producing 99dB. So one meter away from the speaker (reference) there is 99dB of sound and as we double this reference distance away from the speaker, the sound pressure will decrease. At 2 meters SPL= 93dB, 4 meters SPL=87dB, 8 meters SPL=81dB.

Busy traffic at 10 meters ~ 80-90dB Office ~ 50dB Normal conversation ~ 40-60dB

 

 

Having this information makes it relatively easy to estimate how much power is required per speaker for a given listening distance. No wasted amplifier power, and no complicated math is required.


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Accessory Guide


Click image to view.

 

Find the correct accessory to enhance the performance and installation of TOA equipment.

 


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