User manual PEAVEY DTH 1 DATASHEET

[. . . ] Recessed handles on each side and rear casters aid in convenient transport. Feet on the side as well as bottom allow flexibility in stacking other mid- and highfrequency enclosures using the DTH 118b as a stable base. Rear panel connections are designed to allow a simple four-conductor input for the DTH 118b alone, or eight-conductor input with a four-conductor output for bi-amping to other systems. [. . . ] Rear panel connections are designed to allow a simple four-conductor input for the DTH 118b alone, or eight-conductor input with a four-conductor output for bi-amping to other systems. For example, if an eight-conductor cable is used, then two pair can be parallelled into a four conductor for high current capacity, and drive the DTH 118b from its low-frequency amplifier; while the other four can be configured as bi-amp output for an upper frequency two-way system. Placement suggestions include freestanding the DTH 118b on its bottom or side on a floor or stage with at least four feet of clear floor space in front of the horn mouth. Another novel placement approach is to stand the horn upright and then face the horn mouth into a room corner at an angle of 45°, 15 inches from the walls. Thus, the room itself becomes an extension of the horn mouth. This placement into the room corner can be further enhanced by using a triangular 3/4" or thicker plywood "cover" (not supplied by Peavey) that serves the purpose of sealing the top of the DTH 118b to the walls, much like the floor seals the bottom to the same walls. This cover need not extend farther into the room than the rear of the DTH 118b, and if constructed appropriately, can also be used to support the mid- and high-frequency enclosures of a fullrange system. An anechoic low frequency response curve of the DTH 118b after processing is shown in Figure 2. The amount of low frequency extension when the DTH 118b is used in a room will be better than shown in the figure. This is due to the room placement of the cabinet as discussed in the previous section. POWER HANDLING There are many different approaches to power handling ratings. The outside dimensions shall be 26 inches wide by 40 1/4 inches high by 31 3/4 inches deep. The loudspeaker system shall be a Peavey model DTH 118b. PERFORMANCE OPTIMIZATION The DTH 118b can be placed relative to stage, floor and/or wall surfaces in a variety of ways to extend its already impressive low frequency performance. Using existing surfaces in this way creates a virtual coupling of the horn to those surfaces that guide the expansion of the sound wavefronts radiated by the mouth of the horn, which can result in as much as a 6 dB increase in efficiency at frequencies below 50 Hz. 2 DTH® 118b Amplitude Response (1W 1m On-Axis) 110 dB SPL (re 20 Pa) 100 90 80 70 60 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 1. Frequency Response (unprocessed) Amplitude Response (1W 1m On-Axis) 110 dB SPL (re 20 Pa) 100 90 80 70 60 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 2. Frequency Response with DTH 118 Sub Processor Impedance 50 30 20 Z ( ) 10 5 3 2 1 20 50 100 200 500 1k Frequency (Hz) 2k 5k 10k 20k Figure 3. Impedance 3 DTH 118b Wiring Diagram DTH® 4115 Loudspeaker DTH® 118b ® 4-Conductor DTH® Jumper Cable 8-Conductor Cable To Amplifiers PEAVEY CABLE PIN # DTH 118b ® JUMPER/ THRU DRIVERS { { 1, 3 SPEAKER 2, 4 SPEAKER + 5 6 7 8 DTH® 4115 - (LOW -) DTH® 4115 + (LOW +) DTH® 4115 - (HIGH -) DTH® 4115 + (HIGH +) Loudspeakers other than the DTH® 4115 may also be wired in this manner. 4-Pin Speakon® Number/Wire Scheme 8-Pin Speakon® Number/Wire Scheme DTH® pin 1+ pin 1pin 2+ pin 2low low high high - white - green - red - black pin 1+ pin 1pin 2+ pin 2- DTH®SUB* low low low low - white - green - red - black 8-Conductor Speakon® (NL8MP)/ Pin-Out Cross Reference Peavey 8-Conductor Cable 1 2 3 4 5 6 7 8 NL8MP 1+ 44+ 33+ 22+ 1- *Stacked Banana Plugs 4 DTH® 118b Mechanical Drawing 800. 1cm 31. 500" Top View 660. 4cm 26. 000" 800. 1cm 31. 500" 1003. 3cm 39. 500" Front View Side View 5 WARNING Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably in susceptibility to noise induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient time. Government's Occupational Safety and Health Administration (OSHA) has specified the following permissible noise level exposures. [. . . ] Impedance 3 DTH 118b Wiring Diagram DTH® 4115 Loudspeaker DTH® 118b ® 4-Conductor DTH® Jumper Cable 8-Conductor Cable To Amplifiers PEAVEY CABLE PIN # DTH 118b ® JUMPER/ THRU DRIVERS { { 1, 3 SPEAKER 2, 4 SPEAKER + 5 6 7 8 DTH® 4115 - (LOW -) DTH® 4115 + (LOW +) DTH® 4115 - (HIGH -) DTH® 4115 + (HIGH +) Loudspeakers other than the DTH® 4115 may also be wired in this manner. 4-Pin Speakon® Number/Wire Scheme 8-Pin Speakon® Number/Wire Scheme DTH® pin 1+ pin 1pin 2+ pin 2low low high high - white - green - red - black pin 1+ pin 1pin 2+ pin 2- DTH®SUB* low low low low - white - green - red - black 8-Conductor Speakon® (NL8MP)/ Pin-Out Cross Reference Peavey 8-Conductor Cable 1 2 3 4 5 6 7 8 NL8MP 1+ 44+ 33+ 22+ 1- *Stacked Banana Plugs 4 DTH® 118b Mechanical Drawing 800. 1cm 31. 500" Top View 660. 4cm 26. 000" 800. 1cm 31. 500" 1003. 3cm 39. 500" Front View Side View 5 WARNING Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably in susceptibility to noise induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient time. Government's Occupational Safety and Health Administration (OSHA) has specified the following permissible noise level exposures. [. . . ]