S P E C I F I C A T I O N S
DTH® 215b
Low-Frequency
Loudspeaker
SPECIFICATIONS
Frequency Response, 1 Meter
On-Axis, Swept Sine in Anechoic
Environment:
45 Hz to 250 Hz
Low-Frequency Cut-Off (-3 dB point):
45 Hz
Usable Low-Frequency Limit (-10 dB point):
35 Hz
Power Handling:
Speakers Parallel:
700 W continuous (52.9 V RMS)
1,400 W program
Speakers Independent:
350 W continuous (52.9 V RMS)
700 W program
Sound Pressure Level, 2.0 V (1 watt) • 1 meter in anechoic environment:
100 dB
Maximum Sound Pressure Level:
126 dB
Transducer Complement:
Two 1505-8DT Black Widow® drivers
Box Tuning Frequency:
47 Hz
Recommended Crossover
Frequency:
150 Hz to 250 Hz range
Impedance (Z):
Speakers Parallel:
4 ohms nominal
3.2 ohms minimum
Speakers Independent:
8 ohms nominal
6.4 ohms minimum
Input Connections:
One Neutrik® four-conductor Speakon® (NL4MP)
One Neutrik® eight-conductor Speakon® (NL8MP with four-conductor NL4MP output)
Enclosure Materials and Finish:
3/4" plywood with black polyurethane coating, black powder coat metal grille and polyester foam overlay
Dimensions (H x W x D):
39-3/4" x 18-3/4" x 30-3/4" (100.9 cm x 47.6 cm x 78.1 cm)
Net Weight:
123 lbs. (55.9 kg)
FEATURES
•Dual 1505-8 DT Black Widow® woofers
•Anti-axial driver arrangement
•16-gauge powder coated metal grille with black polyester foam overlay
•Fourand eight-conductor input with four-conductor output
•Black polyurethane coating
•Rear pocket casters
DESCRIPTION
The DTH® 215b is a perfect match as an additional low-frequency enclosure for any of the DTH® enclosures. This enclosure is loaded with two 1505-8DT Black Widow® drivers. One of these woofers has been mounted backwards (its electrical polarity has also been reversed so that its acoustical polarity is identical to
the other woofer). The anti-axial arrangement of the drivers eliminates virtually all even-order harmonic distortion. Maximum versatility was our main goal when considering the input to this loudspeaker. Both drivers are connected to a Neutrik® fourconductor Speakon® connector. The drivers are also connected to one half of a Neutrik® eightconductor Speakon® connector. The other half of this connector is hooked up to a second Neutrik® four-conductor connector. This connector serves as an output to another loudspeaker such as a DTH® 215b. By using this output, you will have only one “home run” of a cable going to your amps instead of two four-conductor cables. A black polyurethane coating covers the DTH 215b. A heavy-duty, 16-gauge metal grille
with polyester foam overlay dresses off the enclosure and provides
superior protection for the drivers. All this combines to give you a great-looking and great-sounding subwoofer perfectly suited to any low-frequency sound reinforcement application.
FREQUENCY RESPONSE
This measurement is useful in determining how accurately a given enclosure reproduces an input signal. The frequency response of the DTH 215b is measured at 1 meter using a 2.0-volt swept sine input. As shown in Figure 1, the drivers in the DTH 215b combine to give a smooth frequency response from 45 Hz to 250 Hz.
POWER HANDLING
There are many different approaches to power handling ratings. Peavey rates this speaker system's power handling using a modified form of the AES Standard 2-1984. Utilizing audio band
(20 Hz to 20 kHz) pink noise with peaks over four times the RMS level, this strenuous test signal assures the user that every portion of this system can withstand today’s high-technology music. The test signal contains large amounts of very low frequency energy, effectively simulating the frequency content of live music situations. The full measure of high frequencies in
the test signal allow for exposure of the speaker system to synthesized tones that may extend beyond audibility. This rating is contingent on having a minimum 3 dB of amplifier headroom available.
ARCHITECTURAL AND ENGINEERING SPECIFICATIONS
The loudspeaker system shall have an operating bandwidth of 45 Hz to 250 Hz. The output level shall be 100 dB when measured at a distance of one meter with an input of one watt. The nominal impedance shall be 4-ohms with speakers paralleled, 8-ohms with speakers independently powered. The continuous power handling shall
be 700 watts, with maximum program power of 1400 watts and minimum amplifier headroom of
3 dB with speakers paralleled. The continuous power handling shall be 350 watts x 2, with maximum program power of 700 watts x 2, and minimum amplifier headroom of 3 dB with speakers independently powered. The outside dimensions shall be
18-3/4 inches wide by 39-3/4 inches high by 30-3/4 inches deep. The weight shall be 123 lbs. The loudspeaker system shall be a Peavey model DTH 215b.
Frequency Response* |
Fig. 1 |
112.0 dB
106.0 dB
100.0 dB
94.0 dB
88.0 dB
82.0 dB
76.0 dB
70.0 dB
20 Hz |
50 Hz |
100 Hz |
200 Hz |
500 Hz |
1kHz |
2 kHz |
5 kHz |
10 kHz 20 kHz |
* With 350 Hz 4th Order Linkwitz-Riley Crossover
ONE YEAR LIMITED WARRANTY
NOTE: For details, refer to the warranty statement.
Copies of this statement may be obtained by contacting
Peavey Electronics Corporation,
P.O. Box 2898, Meridian, Mississippi 39302-2898.
Impedance |
Fig. 2 |
31.6 ohm
10 ohm
3.16 ohm
50 Hz |
100 Hz |
200 Hz |
500 Hz |
1 kHz |
2kHz |
5 kHz |
10 kHz |
20 kHz |
DTH® 215b
Wiring Diagram
DTH® 4210 Loudspeaker |
DTH® 215b |
4-Conductor DTH®
Jumper Cable
Loudspeakers other than the DTH® 4210 may also be wired in this manner
8-Conductor Cable
To Amplifiers
PEAVEY CABLE PIN #
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{ |
1 |
TOP 8W - |
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® |
2 |
TOP 8W + |
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DTH 215b |
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3 |
BOTTOM 8W - |
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4 |
BOTTOM 8W + |
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JUMPER/ |
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5 |
DTH® 4210 - (LOW -) |
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THRU |
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6 |
DTH® 4210 + (LOW +) |
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DRIVERS { |
7 |
DTH® 4210 - (HIGH -) |
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8 |
DTH® 4210 + (HIGH +) |
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4-Pin Speakon® Number/Wire Scheme
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DTH® |
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DTH® SUB* |
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pin 1+ |
low |
- white |
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pin 1+ |
low |
- white |
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pin 1- |
low |
- green |
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pin 1- |
low |
- green |
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pin 2+ |
high |
- red |
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pin 2+ |
low |
- red |
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pin 2- |
high |
- black |
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pin 2- |
low |
- black |
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*Stacked Banana Plugs
8-Pin Speakon® Number/Wire Scheme
8-Conductor Speakon® (NL8MP)/
Pin-Out Cross Reference
Peavey 8-Conductor Cable |
NL8MP |
1 |
1+ |
2 |
4- |
3 |
4+ |
4 |
3- |
5 |
3+ |
6 |
2- |
7 |
2+ |
8 |
1- |
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