Speaker SEAS RM120, 4 ohm, 4.74 inch

Brand 
SEAS
Model 
RM 120
SKU 
RM 120-4
Manufacturer code 
L0021-04S
Product type 
Cone driver
Sales packaging 
Sold by piece
Brand
SEAS
Model
RM 120
TLHP code
RM 120-4
Manufacturer code
L0021-04S
Product type 
Cone driver
Sales packaging 
Sold by Piece
Recommended retail price
€266.40
TLHP selling price
214.86IT/piece
excluding delivery service
Save
19%

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In stock
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  • Heavy copper rings mounted above and below the T-shaped pole piece reduce non linear
    and modulation distortion and increase overload margin.


    The large magnet system provides good sensitivity and transient response.
    The chrome plated brass phase plug reduces compression due to temperature variations in the voice coil, increases long term power handling capacity and eliminates resonances in the cavity inside the voice coil former.
    The extremely stiff and stable injection moulded zinc basket keeps the critical components in perfect alignment. Large windows in the basket both above and below the spider reduce sound refl exion, air fl ow noise and cavity resonance to a minimum.
    Gold plated terminals mounted on a glass fi bre reinforced plate reduce contact resistance and improve reliability.

General

Product type Cone driver
Brand SEAS
Reference RM 120
Product code L0021-04S

Informations

Product manufacturer range 12 cm, Lotus, Midrange
Nominal impedance 4 ohm
Dimensional category 4.5 inch
Frequency coverage type Fullrange
Manufacturer sensitivity 90.5 dB
Calculated sensitivity 87.57 dB
Nominal power handling 110 W
Max power handling 400 W
Bandwidth 300÷5000 Hz

Fundamental parameters

Sd 50 cm²
Mms 4.55 gr
Cms 1100 µm/N
Rms 0.73 kg/s
Le 0.25 mH
Re 3 ohm
BL 4 T.m

Small signal parameters

Fs 72 Hz
Qes 0.4
Qms 2.95
Qts 0.35
Vas 4 L

Datas

Flux density 1.1 T
Xmax ±1.7 mm
EBP 180 Hz
Fs / Qts 206 Hz
Vas * Qts² 0.49 L
Calculated efficiency 0.36 %
Weight ~1.3 kg

Dimensions

Voice coil diameter 1.02 inch
Winding depth 9.4 mm
Gap height 6 mm
Outside diameter 120.4 mm
Baffle cutout diameter 100 mm
Depth 71.5 mm
Front thickness 5 mm
Depth after front 66.5 mm
Diamètre aimant (mm) 99 mm

Shape & Materials

Front chape Cylindrical
Basket masterial Acier
Surround shape One roll
Surround material Rubber
Cone material Paper


Question about SEAS RM 120-4

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This system is only available for technical questions. For questions of prices, availability of products and deadline thank you to send your request by the contact page.


Informations SEAS RM 120-4

Heavy copper rings mounted above and below the T-shaped pole piece reduce non linear
and modulation distortion and increase overload margin.


The large magnet system provides good sensitivity and transient response.
The chrome plated brass phase plug reduces compression due to temperature variations in the voice coil, increases long term power handling capacity and eliminates resonances in the cavity inside the voice coil former.
The extremely stiff and stable injection moulded zinc basket keeps the critical components in perfect alignment. Large windows in the basket both above and below the spider reduce sound refl exion, air fl ow noise and cavity resonance to a minimum.
Gold plated terminals mounted on a glass fi bre reinforced plate reduce contact resistance and improve reliability.

Manufacturer SEAS
Name Speaker SEAS RM120, 4 ohm, 4.74 inch
SKU RM 120-4
Impedance 4 Ohm
Seller TLHP
Price 214.86 179.05
Availability In stock


All or a part of the characteristics displayed on this page are provided by the manufacturer, it is possible that some pieces of information are unavailable or wrong. In addition, the manufacturer may need to change the product specifications without notice at any time in order to improve the product, or to adapt his offer to the manufacturing and supply constraints.. We suggest you to contact us if you need further information, if you observe a mistake or if you wish to have confirmation about information.

Measures/Schemes SEAS RM 120-4

SPL vs Impedance measure *

Image spl vs impedance measure cone driver SEAS Speaker SEAS RM120, 4 ohm, 4.74 inch

* The frequency responses above show measured free field sound pressure in 0


Dimensions

Image Drawing & Mounting cone driver SEAS Speaker SEAS RM120, 4 ohm, 4.74 inch

Garantie

This product is under manufacturer's warranty. This warranty protect you for the manufacturing defaults. The warranty does not protect for abnormal use of the product.

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