Features

•Dual BW X 1888 HP Black Widow® X woofers

•Anti-axial driver arrangement

•16-gauge powder coated metal grill with foam overlay

•Four-and eight-conductor input with four-conductor output

•Black polyurethane coating

•Rear casters

DESCRIPTION

The DTH® 218b is a perfect match as an additional low-frequency enclosure for any of the DTH® enclosures. This enclosure is loaded with two BW X 1888 HP Black Widow® X Woofers.

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 loud- speaker. Both drivers are con- nected to a Neutrik® four-conductor Speakon® connector. The drivers are also connected to one half of a Neutrik® eight-conductor 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® 4210. 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 218b.

This is a low-wear, high abrasion- resistant material, similar to those used in the automotive industry. 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® 218b is measured at 1 meter using a 2.0-volt swept sine input. As shown in Figure 1, the drivers in the DTH 218b 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 imped- ance shall be 4 ohms with speakers paralleled, 8 ohms with speakers independently powered. The continuous power handling shall be 1,000 watts, with maximum program power of 2,000 watts and minimum amplifier head-room of

3 dB with speakers paralleled. The continuous power handling shall be 500 watts x 2, with maximum program power of 1,000 watts x 2, and minimum amplifier headroom of 3 dB with speakers indepen- dently powered. The outside dimensions shall be 22 3/4 inches wide by 47 1/4 inches high by

29 3/4 inches deep. The weight shall be 145 lbs. The loudspeaker system shall be a Peavey model DTH® 218b.