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Old 2nd August 2014, 01:09 AM   #1
kuer is offline kuer  Canada
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Default About power spec?

Rated Power: 40 Hz 20 kHz 8 ohms 80 W/Ch

I just read a reciver's spec above.

Does the "40Hz" means this receiver is not able to handle the frequency below 40Hz? or just an indication to do with power rate?

Thank you very much.
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Old 2nd August 2014, 01:14 AM   #2
rayma is online now rayma  United States
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Quote:
Originally Posted by kuer View Post
Rated Power: 40 Hz 20 kHz 8 ohms 80 W/Ch

I just read a reciver's spec above.

Does the "40Hz" means this receiver is not able to handle the frequency below 40Hz? or just an indication to do with power rate?

Thank you very much.
Yes, probably it's a power supply limitation, a too small transformer and/or main capacitors.
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Old 2nd August 2014, 01:25 AM   #3
kuer is offline kuer  Canada
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Quote:
Originally Posted by rayma View Post
Yes, probably it's a power supply limitation, a too small transformer and/or main capacitors.
Thanks for you reply.

So it still can handle the low end below 40hz, such as 25hz or 30hz bass, but the power output is limited to 80w at the low 40Hz or below.

Can I understand like this?
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Old 2nd August 2014, 01:33 AM   #4
rayma is online now rayma  United States
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Quote:
Originally Posted by kuer View Post
Thanks for you reply.

So it still can handle the low end below 40hz, such as 25hz or 30hz bass, but the power output is limited to 80w at the low 40Hz or below.

Can I understand like this?
Without knowing the model, I'd suspect that the power output is -3dB at 40 Hz, and decreases below that.
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Old 2nd August 2014, 02:58 AM   #5
kuer is offline kuer  Canada
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Quote:
Originally Posted by rayma View Post
Without knowing the model, I'd suspect that the power output is -3dB at 40 Hz, and decreases below that.
it's marantz rs4021 stereo receiver. please see the pic, I may got confused.

Thanks.




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Old 2nd August 2014, 03:03 AM   #6
kuer is offline kuer  Canada
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and the other information.

I need to know if this receiver can output the low frequency low er than 40hz? I saw somebody online said it can't do that low. My speakers go around 30hz.


Specifications

Tuning range: FM, MW

Power output: 80 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.08%

Input sensitivity: 200mV (line)

Signal to noise ratio: 95dB (line)

Dimensions: 440 x 146 x 387mm

Weight: 11.7kg

Accessories: RC4021SR remote control

Year: 2006
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Old 2nd August 2014, 03:24 AM   #7
rayma is online now rayma  United States
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[QUOTE=kuer;4010419]and the other information.

I need to know if this receiver can output the low frequency low er than 40hz? I saw somebody online said it can't do that low. My speakers go around 30hz.

Well, the power supply capacitors are a pair of 8200uF electrolytics, reasonably typical for receivers. What are your speakers?
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Old 2nd August 2014, 03:36 AM   #8
kuer is offline kuer  Canada
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Quote:
Originally Posted by rayma View Post

Well, the power supply capacitors are a pair of 8200uF electrolytics, reasonably typical for receivers. What are your speakers?
Energy rc70 or paradigm 7se mk3, I can't remember the exact low frequency response, around 30hz or a little more.

Only play some music with low volume.

Not sure if you think this receiver can give the full range sounding after you checked this reciver?

Thanks.
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