Loudspeaker
Wheneverhenever performance and size matters, we are your center of competence! We are well known for the design and production of high performance speaker in small size. Based on a wide range of standard micro-speaker, we can modify all relevant parameters according to the specifications of our valued customers. Originating from custom-designed acoustic devices for the automotive industry, we have significant experience in process management, mass production organization and project management; all this of course with the integration of cost-effective management systems. Besides automotive, other high-volume market segments are consumer durables, medical equipment and consumer goods. Whatever your requirements, it is always worth talking to us.

The latest developments are in Surface Mount Technology (SMT). These speaker will pass all standard reflow processes without any loss in acoustic quality. Packaging can be in magazines, as well as tape on reel. Acoustic performance meets the highest standards.

GREWUS is here to serve you with the best solution for your product. For us “win/win” is not a claim, but a philosophy!

Series Specifications  
S = Speaker
H = With housing Diameter and impedance C = Connector
O = Without housing P = Pin
W = Wire
L = Solder pad
F = Spring contact
S = SMD
Sound Information
1. How can the frequency response of a loudspeaker be optimized ?
CloseThe frequency response of a loudspeaker can be adapted by changing the mechanical environment. Ideally a loudspeaker is mounted on an infinite sound baffle. This ensures that there is no interference in the frequency response caused by external influences.

By installing the loudspeaker into an enclosure the frequency response can be greatly affected. The size of the speaker housing changes the frequency response significantly. The smaller the housing gets, the less likely deeper frequencies can be reproduced.

If no housing is used, the frequency response can be greatly influenced by not allowing deep frequencies to be reproduced as they are acoustically short-circuited.

Another way of indirectly influencing the frequency response is the use of filters. In order to achieve a frequency response as linear as possible, as is necessary, i.e., for voice or music playback, the middle frequencies could be filtered out, thereby effectively straightening the frequency response a little bit.
2. Do I have to pay attention to proper polarity, what happens in the event of reverse connection ?
CloseYou have to pay attention to proper polarity both with loudspeakers and magnetic signaling devices, when the components are operated with an asymmetrical square wave voltage. If the components are run reverse connected this will result in a decrease in volume and over-loading up to destruction.
3. What does the expression “SPL 1 W/m” stand for ?
CloseTo be able to compare loudspeakers with each other, they are standardized at 1W / m. This means, the actual loudness value (for example at 0,5 W) is converted into a theoretical value of 1W and the loudness value at a distance of 10cm of the loudspeaker under review is also converted into one at a theoretical distance of 1m.
4. What is meant by an acoustic short-circuit ?
Close If a loudspeaker is employed without a sufficiently large baffle or without housing, the sound pressure level, in particular at low frequencies, will drop significantly. The reason for this is an acoustic short-circuit. If a membrane moves forward it creates pressure and at the same time a vacuum is produced at the backside of the membrane. If pressure compensation is allowed at the side of the loudspeaker the sound waves created by the membrane’s front side are greatly reduced by an overlapping of the anti-phase sound waves of the membrane’s back side. The smaller the membrane is, compared to the wave length, the more pronounced is the effect of a reduction in sound pressure level.

Our range of Loudspeaker

LOUDSPEAKER WITH HOUSING

LOUDSPEAKER WITH HOUSING
Click on product part for data sheet of our LOUDSPEAKER WITH HOUSING Close
  SH 3732F A >> SH 6808C-01 A >> SH 5708W A >> SH 4224P-01 A >>
Operating temperature -40°C to 90°C -10°C to 60°C -20°C to 60°C -20°C to 65°C
Storage temperature -40°C to 90°C -25°C to 70°C -40°C to 85°C -30°C to 75°C
Contact Spring connector Wire Faston
Weight [g] 11 - 68 40
DC resistance [Ω] 29± 10%
Impendance [Ω] 32 ±15% 8 ±20% 8 ±15%
Resonant frequency [Hz] 400 250 ±50 750 ±20%
SPL [dBA] 85 ±5 ≥ 85 ≥ 85
Frequency range 400-17000 200-15000 500-3000
Rated input power [W] 0.3 1 1
Maximum input power 0.5 2 3
Buzz and rattle Must be normal Must be normal Must be normal SIN
  SH 3432P-03 A >> SH 3048P A >> SH 3032P-08 A >> SH 3032P-07 A >>
Operating temperature -40°C to 90°C -40°C to 90°C -40°C to 105°C -40°C to 105°C
Storage temperature -40°C to 90°C -40°C to 90°C -40°C to 105°C -40°C to 105°C
Contact Pin Pin Wire Wire
Weight [g] 11 11 11 11
DC resistance [Ω] 29± 10%
Impendance [Ω] 32 ±15% 8 ±15% 32 ±10% 32 ±10%
Resonant frequency [Hz] 400 ±15% 400 ±15% 500 ±100
SPL [dBA] 72 ±2 72 ±2
Frequency range 400-17000 400-17000 400-10000 400-10000
Rated input power [W] 0.3 0.3 1.3 1.3
Maximum input power 0.5 0.5 1.5 1.5
Buzz and rattle Must be normal SIN Must be normal SIN
  SH 3032P-04 B >> SH 3032P-03 C >> SH 3032P-02 B >> SH 30200P A >>
Operating temperature -40°C to 105°C -40°C to 105°C -40°C to 105°C -40°C to 85°C
Storage temperature -40°C to 105°C -40°C to 105°C -40°C to 105°C -40°C to 85°C
Contact Pin Pin Pin Pin
Weight [g] 9 9 9 9
DC resistance [Ω]
Impendance [Ω] 32 ±10% 32 ±10% 32 ±10% 200 ±15%
Resonant frequency [Hz] 500 ±100 900
SPL [dBA] 95 ±5 95 95 ±5 ≥ 85
Frequency range 1000-4000 1000-4000 1000-4000 1000-4000
Rated input power [W] 1.3 1.3 1.3 0.3
Maximum input power 1.5 1.5 1.5 0.6
Buzz and rattle Must be normal SIN
  SH 3016P-01 B >> SH 30100P-01 B >>
Operating temperature -40°C to 85°C -40°C to 85°C
Storage temperature -40°C to 85°C -40°C to 85°C
Contact Pin Pin
Weight [g] 10 9
DC resistance [Ω]
Impendance [Ω] 16 ±10% 100 ±10
Resonant frequency [Hz]
SPL [dBA] see remarks ≥ 90
Frequency range 1000-4000 1000-4000
Rated input power [W] 0.8 0.15
Maximum input power 1 0.3
Buzz and rattle Must be normal SIN Must be normal SIN
Close

LOUDSPEAKER WITHOUT HOUSING

LOUDSPEAKER WITHOUT HOUSING
Click on product part for data sheet of our LOUDSPEAKER WITHOUT HOUSING Close
  SO 5050L-01 B >> SO 5080L A >> SO 3650F-01 A >> SO 3608F-01 A >>
Operating temperature -40°C to 85°C -40°C to 80°C -40°C to 90°C -40°C to 90°C
Storage temperature -40°C to 85°C -40°C to 80°C -40°C to 90°C -40°C to 90°C
Contact Terminal Terminal Spring Spring
Weight [g] 30 6.5 6.5
Impendance [Ω] 50 ±7,5 80 ±15% 50 ±15%
Resonant frequency [Hz] 360 ±20% 450 ±90 450 ±20% 400 ±20%
SPL [dBA] ≥ 83 78 ±2 85 ±3 78 ±3
Frequency range 360-3400 fo… 3500 450-10000 400-10000
Rated input power [W] 0.5 0.3 0.3 0.3
Maximum input power 1 0.5 0.5 0.5
Buzz and rattle Must be normal Must be normal Must be normal Must be normal
  SO 3450F-01 A >> SO 3408F-01 A >>
Operating temperature -40°C to 90°C -40°C to 90°C
Storage temperature -40°C to 90°C -40°C to 90°C
Contact Spring Spring
Weight [g] 6.5 6.5
Impendance [Ω] 50 ±15%
Resonant frequency [Hz] 350 ±15 400 ±20%
SPL [dBA] 72 ±3 78 ±3
Frequency range fo -17Khz 400-10000
Rated input power [W] 0.3 0.3
Maximum input power 0.5 0.5
Buzz and rattle Must be normal Must be normal
Close

SMD SPEAKER

SMD SPEAKER
Click on product part for data sheet of our SMD SPEAKER Close
  SH 1508S A >> SH 1308S A >>
Operating temperature -30°C to 85°C -30°C to 85°C
Storage temperature -40°C to 105°C -40°C to 105°C
Contact SMD SMD
Weight [g] 1.5 1.4
Impendance [Ω] 8 ±20% 8 ±20%
Resonant frequency [Hz] 800 ±15% 1000 ±200
THD [%] ≤ 5 ≤ 5
SPL [dBA] 87 ±3 88 ±3
Frequency range See Diagramm See Diagramm
Rated input power [W] 0.5 0.7
Maximum input power 0.8 1
Buzz and rattle Must be normal Must be normal
Close
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