| Product series name | 4 inch 2-way tower speaker | |
| Model No | R4 | |
| Speaker Size (Inches) | 4 inch | |
| Component | 2-way | |
| Performance | Impendence (Ω) | 4 Ohm |
| DCR (Ω) | 3.6±0.15 Ohm | |
| Fo (Hz) | 87Hz ±10% | |
| SPL (dB/ 1 M.W) | 85±3 dB | |
| Frequency Response | 50~20 KHz (± 10dB) | |
| Continuous Power (Watt) per piece | 60 Watts (RS-426B) | |
| Qts | 0.6~0.8 (Speaker woofer) | |
| Testing | Life test | RS-426B/ 8H |
| Operation in High Temperature | 80℃/ 4H | |
| Operation in Low Temperature | '-20℃/4H | |
| SST (Salf spray test) | CASS 48H (Clamp only) | |
| NSS 500H (Product completely ) | ||
| UV test | UV-340A, 500H with condensation( Product completely) | |
| Woofer | Basket | Fe（Black baking paint） |
| Magnet | Φ80*Φ32*15mm（H），Y35, 11 OZ | |
| Top Plate | 4mm thick, Φ75*Φ29.10*5mm, Passiveation---Zinc plated, | |
| Back-plate | Steel with Zinc plated: Passivation--Zinc palted | |
| CCR (Center Copper Ring) | N/A | |
| Voice Coil | ID: Φ25.5mm, 0.15mmm Kaptone Bobbin, Φ0.18mm CCAW , DCR: 3.6±0.15 Ohm winding height: 7.20mm; SVC, 2-LAYER | |
| Cone and Surrounds | Cone: 0.40mm thick IMPP,Matte black Surrounds: Black 60 ° santoprene premixed anti - UV agent. | |
| Spider | Conex material, Brown | |
| Dust Cap | 0.40mm thick IMPP，Matte black | |
| Terminal | Built-in rear cover, cooper, 0.5mm thick Pin | |
| Screw (between top plate & basket) | Riveting | |
| Tweeter | Size | 25.4mm (1") PEI dome with Neo-magnet |
| Dome (Diaphragm) | PEI Dome, 0.05mm thick, | |
| Finish: Silver color | ||
| Magnet | N42H Neo-magnet, Φ24*3mm | |
| Top plate | Zinc plated, Φ25*2.5mm | |
| Yoke | low-carbon steel, Zinc plated | |
| Vice Coil | Bobbin: Φ25.40mm,0.075mm thick Kapton | |
| Wire:Φ0.13mm CCAW , DCR: 3.0 Ohm±0.16, winding height: 1.80 mm; SVC, 2-layer | ||
| Sealed Sticker | Yes | |
| Jump wire | 20 AWG , PVC leather thread, for tweeter out to terminal | |
| Ferro fluid | Yes | |
| RGB Lighting | LED | N/A |
| LED PCB | N/A | |
| LED Jump Wire | N/A | |
| Assembly | Grille | QIMEI PA-777D ABS (105℃), Reference weight: 82g, UV protected |
| finish:matte black (matte black painted and UV coating) | ||
| Logo: hot stamping (silver color) | ||
| LED diffuser cover | N/A | |
| Real gasket | Black 55° NBR | |
| Screw | M4*30,φ6.4 304# stainless steel | |
| PR | Cone and Surrounds | Black 60° NBR; 0.50mm thick IMPP |
| Spider | N/A | |
| Basket | 0.6mm SPCC, matte black | |
| Gasket | 0.7mm thick PP | |
| Screw | M4*8，304 stainless | |
| Clump weight | Carbon steel with Zinc plated, 22.6G | |
| Clamps | Silicone insert | Black 75° ,0.3mm |
| Rubber insert | Black 70° NBR,2mm | |
| Screw | M6*16, 304 stainless | |
| Screw | M5*25, 304 stainless | |
| Nut | M5 | |
| Screw | M8*65, 304 stainless | |
| Nut | M8 | |
| Clamps | low-carbon steel, Zinc plated with matte black finish,3mm | |
| Clamps | 4mm thick SPCC, Zinc plated | |
| Clamps | low-carbon steel, Zinc plated with matte black finish,5.4mm | |
| Clamps | Aluminum with matte black finish | |
| Clamps | 2mm thick Aluminum with matte black finish | |
| Gasket | Black 70° NBR,1.3mm | |
| Gasket | 304 stainless, 1.5mm | |
| Encosure Assembly | Enclosure | Black QIMEI PA-777D ABS (105℃) with texture MT11020 |
| LOGO Badge | Aluminum with matte black finish, 1.4mm | |
| Mounting ring | Black QIMEI PA-777D ABS (85℃),3mm | |
| Grommet | Black 55° NBR | |
| Metal mesh | 304 stainless, 0.6mm | |
| Screws | M4*8，304 stainless | |
| Water proof connector ( Female) | Two core wires(2 Pin+18AWG wire for speker) | |
