The most advanced hifi isolation technology developed in the last 40 years of hifi furniture design, Custom Design present the Intra Specific Isolation Technology which has been built into the KS4 speaker cabinet. The advanced engineering technology and experienced workforce have combined to produce a very unique hifi speaker which redefines the world of speaker cabinet design. An absolute isolation philosophy, built a HiFi Furniture company which now manufactures the worlds first 6mm Inert speaker cabinets in Newcastle Upon Tyne. Very thin walls in combination with a very high mass, 19.5kg per speaker produces a sound which you need to hear to believe. Kinetik Sound KS4 speakers, remember where you heard them first! All Design copyright @ Custom Design 2026 with 2 Patents pending for unique design features.
Custom Design are extremely proud to present their first, vertical firing ported speaker cabinet featuring the revolutionary Intra Specific Isolation Technology. This unique approach to speaker cabinet design provides the best of all music worlds, rigidity, thin walls and very high mass. The unique KS4 speakers offer a high mass value of 19.5kg with the drivers fitted, a very thin 6mm CR4 steel wall, which is very strong, rigid and inert. This minimises any colouration or influence imposed on the sound performance of your music compared to traditional wood speaker cabinet designs. Custom Design have been able to manufacture the first ever Speaker which features Intra Specific Isolation Technology, built into a steel speaker cabinet called Kinetik Sound KS4.
The future design of all high end speaker cabinets, rejuvenating speaker cabinet design with 21st century Intra Specific Isolation Technology. Setting new standards in Speaker Cabinet design and performance. The Intra Specific Isolation Technology works by converting unwanted resonance energy into negiliable heat, achieved by a balanced approach to the speaker cabinet design.
A small 19.5kg Inert Speaker Cabinet which has a very high mass value. a very thin rigid steel wall, 6mm combined with the unique Custom Design Intra Specific Isolation technology. Exclusive to Custom Design allows the Kinetik Sound KS4 Speaker reproduces musical instruments with detail, precision and timing to the performance, a warmth to vocals expressing passion and soul. But best of all an incredible mid range, separation, detailed staging with accurate timing to the bass frequency. Overall this totally unique, inert speaker cabinet provides much more than outstanding sound performance with total musicality, they reproduce music how we believe it should be heard, with passion.
2 Patents Pending Intra Specific isolation Technology Steel Speaker Cabinet Design All copyright design @ Custom Design Newcastle 20-06-2026
Kinetik Sound KS4 Speaker cabinet dimensions are 200mm wide x 226mm depth x 326mm high 19.5kg with drivers fitted excluding speaker stands
Kinetik Sound KS4 Speaker cabinet manufactured with 6mm Intra Specific Isolation Technology CR4 steel walls to minimise colouration
Kinetik Sound KS4 Speaker cabinet manufactured with a high mass value to enhance the mid range and bass frequency
Image: Kinetik Sound KS4 Speaker front side view In Black with black steel trim featuring Intra Specific Isolation Technology in the Steel Speaker Cabinet side view with the OM44 KS4 Speaker stands optional extra featuring Custom Designs 4mm Acoustic Steel top plates precision laser cut out to maximise the KS4 vertical firing port system
Image: Debut of the Kinetik Sound KS4 Speaker at the North West Audio Show 2026
Image: Best of Show token award to the Kinetik Sound KS4 Speaker on the first ever public demonstration.
Image: Kinetik Sound KS4 Speaker front side view In Black with black steel trim featuring Intra Specific Isolation Technology in the Steel Speaker Cabinet side view with the OM44 KS4 Speaker stands optional extra with Custom Design exclusive Hifi Isolation feet
Image: Kinetik Sound KS4 Speakers setup in the Dem room at Audio Therapy in May 2026 including the custom built OM44 KS4 Speaker stands, Thank you to David for his time and advice.
Image: Scan of the CDASP4 Inert Intra Specific technology steel speaker cabinet provided by Karl-Heinz Fink and his Team in Germany.
Image: Inert Filler Custom Design Specialist Speaker Stand Mass Loading material, 1mm to 2mm angular particle size prevents voids occurring inside the support columns with a very high mass value when compared to Atacama Atabites. Available in box of 8 bags 13kg.
Image: Kinetik Sound KS4 Speaker front side view In Black with black steel trim featuring Intra Specific Isolation Technology in the Steel Speaker Cabinet side view with the OM44 KS4 Speaker stands optional extra featuring Custom Designs 4mm Acoustic Steel top plates precision laser cut out to maximise the KS4 vertical firing port system
Image: Kinetik Sound KS4 Speaker In Black with stainless steel trim featuring Intra Specific Isolation Technology in the Steel Speaker Cabinet front view
Image: OM44 KS4 Speaker stands 610mm with a 200mm x 226mm x 4mm acoustic steel cut out top plate, Custom Design exclusive Black Zinc coated M8 Custom Design Hifi Isolation Feet
Image: OM44 KS4 Speaker Stands with a 200 x 226mm x 4mm acoustic steel top plate precision laser cut out for maximum performance supplied as standard with 20 x 20 x 8mm hifi isolation pads
Image: Inert Filler Custom Design Specialist Speaker Stand Mass Loading material, 1mm to 2mm angular particle size prevents voids occurring inside the support columns with a very high mass value when compared to Atacama Atabites. Available in box of 8 bags 13kg or a bag 1.6kg
Image: Kinetik Sound KS4 Speaker front side view In Black with black steel trim featuring Intra Specific Isolation Technology in the Steel Speaker Cabinet side view with the OM44 KS4 Speaker stands optional extra featuring Custom Designs 4mm Acoustic Steel top plates precision laser cut out to maximise the KS4 vertical firing port system
Image: OM44 KS4 Speaker stands 610mm with a 200mm x 226mm x 4mm acoustic steel cut out top plate, Custom Design exclusive Black Zinc coated M8 Custom Design Hifi Isolation Feet
For information on the Intra specific Isolation technology and solid steel speaker casing design please contact Custom Design.
