# US 2014/0153737 A1 · Multiple receiver assembly and a method for assembly thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153737 A1 - Document ID: US20140153737A1 - Status: Published application - Kind: A1 - Application number: 14/130,450 - Filed: 2012-06-29 - Published: 2014-06-05 - Earliest claimed: 2011-07-07 - Assignees: Sonion Nederland B.V. - Inventors: Onno Geschiere; Mike Geskus - Web page: https://patentgrep.com/patent/US20140153737A1 ## CPC - H04R 1/26: Spatial arrangements of separate transducers responsive to two or more frequency ranges - H04R 1/1058: {Manufacture or assembly} - H04R 1/225: {for telephonic receivers} - H04R 1/2853: {using an acoustic labyrinth or a transmission line} - H04R 1/2857: {for loudspeaker transducers} - H04R 1/345: {for loudspeakers} - H04R 3/08: of electromagnetic transducers - H04R 1/1016: {Earpieces of the intra-aural type} - H04R 1/2842: {for loudspeaker transducers} - H04R 5/033: Headphones for stereophonic communication {(details thereof, e.g. relating to batteries, cables or control elements H04R1/10)} - H04R 11/06: Telephone receivers - H04R 25/48: {using constructional means for obtaining a desired frequency response (H04R25/652 takes precedence)} - H04R 25/60: {Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles (ear wax retarders, e.g. mounting thereof H04R25/654)} - H04R 31/00: Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor {(manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182)} - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract A receiver assembly comprising a first and a second receiver housing and a spout. The second receiver housing is positioned over a first sound outlet port of the first receiver housing and the spout is positioned over a second outlet port of the second receiver housing. An acoustic duct is located between the first and second receiver housing acoustically connecting the first sound outlet port to the spout and is provided with an acoustic mass. ## Claims ### Claim 1 A receiver assembly, comprising: a first receiver housing comprising a first sound outlet port; a second receiver housing comprising a second sound outlet port; a spout; wherein the second receiver housing is positioned over the first sound outlet port; further comprising an acoustic duct located between the first and second receiver housing acoustically connecting the first sound outlet port to the spout; and an acoustic mass positioned in an end portion of the acoustic duct close to the spout. ### Claim at position 2 2-17. (canceled) ### Claim 18 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic mass comprises a tube. ### Claim 19 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic mass has an outer diameter corresponding to the inner diameter of the end portion of the acoustic duct. ### Claim 20 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic mass (8, 108) in cross-section has an inner contour of circular shape. ### Claim 21 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic mass has an inner diameter between 0.1 and 0.7 mm. ### Claim 22 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic duct comprises a chamber and a passage, wherein the passage runs from the chamber towards the spout. ### Claim 23 (depends on 22) A receiver assembly according to claim 22, wherein the acoustic duct further comprises a recess at an end of the passage running towards the spout. ### Claim 24 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic duct is located in the outer surface of the first receiver housing, the second receiver housing or both receiver housings. ### Claim 25 (depends on 1) A receiver assembly according to claim 1, wherein the acoustic duct is provided as a plate with a cut-out portion. ### Claim 26 (depends on 1) A receiver assembly according to claim 1, wherein the first sound outlet port is a circular shaped hole in the first receiver housing. ### Claim 27 (depends on 1) A receiver assembly according to claim 1, wherein the second outlet port is acoustically connected directly to the spout. ### Claim 28 (depends on 1) A receiver assembly according to claim 1, wherein the first receiver housing comprises a woofer transducer assembly; and wherein the second receiver housing comprises a mid-range transducer assembly or a tweeter transducer assembly. ### Claim 29 (depends on 1) A receiver assembly according to claim 1, wherein the second outlet port is acoustically connected to the acoustic duct. ### Claim 30 (depends on 29) A receiver assembly according to claim 29, wherein the first and second receiver housing each comprise a woofer transducer assembly. ### Claim 31 A method for assembling a receiver assembly, comprising: providing a first receiver housing comprising a first sound outlet port, a second receiver housing comprising a second sound outlet port and providing an acoustic duct; positioning the second receiver housing over the sound outlet port of the first receiver housing; positioning the acoustic duct between the first and second receiver housing such that it is located over the first sound outlet port of the first receiver housing and acoustically connected with the first sound outlet port and that an end portion of the acoustic duct is located near the second sound outlet port; positioning an acoustic mass in the end portion of the acoustic duct; and placing a spout over the second sound outlet port and the end portion of the acoustic duct. ### Claim 32 (depends on 31) A method for assembling a receiver assembly according to claim 31, further comprising providing the acoustic duct as a spacer member; and prior to positioning the acoustic duct between the first and second receiver housing, mounting the acoustic duct to the second receiver housing such that the end portion of the acoustic duct is located near the second sound outlet port of the second receiver housing. ### Claim 33 (depends on 31) A method for assembling a receiver assembly according to claim 31, further comprising: applying glue to fixate the acoustic mass.