I have an amp that is 50wx2 for the left and right but my speaker is 230w max

[Dingus]

I bought a small amp and Its rated for 50wx2 and 100w for the sub but i have 2 speakers that is 230w max and 40w NOM will it work or will the amp be too weak?

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[Ridinhi 5,000+ posts]

I bought a small amp and Its rated for 50wx2 and 100w for the sub but i have 2 speakers that is 230w max and 40w NOM will it work or will the amp be too weak?

It will work fine. The 40w NOM is what matters, the 230w max , never go off max ratings.

 

[GBloes]

Just to reinforce this: peak power ratings are meaningless. That’s the absolute most they can handle for millionths of a second without blowing.

So, you’ve got a 50wRMS amp for 40w RMS speakers which is fine, just make sure you set the gains to match the speakers.

Just as an FYI incase it might be helpful: Slowly turn the radio up to a point it starts to sound off, then slowly turn it down until it sounds good then turn it down a bit more [(this is to make sure youre not sending the amp a distorted signal) make sure to remember what volume you end up with). Then slowly turn up the amps gains until the speakers start sounding funny then back the gain off until they sound good again and back off a bit more (to be 100% certain you don’t send them too much power no matter what song you listen to).
Make sure to use either a test tone towards the lower end of the speakers frequency range or music with lots of low end that the speakers will play.

That’s the best way to do it by ear, not the best over all as you’ll end up losing some power. But shouldn’t be noticeable and even if it is it’s far better then risking damage to the speakers.

 

[Dingus]

Just to reinforce this: peak power ratings are meaningless. That’s the absolute most they can handle for millionths of a second without blowing.

So, you’ve got a 50wRMS amp for 40w RMS speakers which is fine, just make sure you set the gains to match the speakers.

Just as an FYI incase it might be helpful: Slowly turn the radio up to a point it starts to sound off, then slowly turn it down until it sounds good then turn it down a bit more [(this is to make sure youre not sending the amp a distorted signal) make sure to remember what volume you end up with). Then slowly turn up the amps gains until the speakers start sounding funny then back the gain off until they sound good again and back off a bit more (to be 100% certain you don’t send them too much power no matter what song you listen to).
Make sure to use either a test tone towards the lower end of the speakers frequency range or music with lots of low end that the speakers will play.

That’s the best way to do it by ear, not the best over all as you’ll end up losing some power. But shouldn’t be noticeable and even if it is it’s far better then risking damage to the speakers.

This is one of those cheap bluetooth amps and i don't think i can change gains and things i dont think it has it

 

[GBloes]

As long as you can use anything other than Bluetooth as a source it will have gains (I.e. if it has speaker level or RCA inputs).

 

[Dingus]

As long as you can use anything other than Bluetooth as a source it will have gains (I.e. if it has speaker level or RCA inputs).

https://www.banggood.com/ZK-TB21-TP...ereo-Bass-AMP-p-1714403.html?cur_warehouse=CN I bought it so i can use the bluetooth

 

[SlugButter]

I use the tpa3116d2 amp boards for home bluetooth builds often. They put out 25 watts x 2 and 50 watts x1 rms power. Some of them come in cases, like what you posted, but you can buy them with the board only also, which is what I use (so I can mount them inside an enclosure to have an all-in-one stereo).

 

[SlugButter]

I just built this one a couple of weeks ago using the tps3116d2, with some added potentiometers and volume controls on it.

 

[SlugButter]

Technically, the volume knob is the gain on these. On mine, I have 3 volume knobs. A satellite speaker volume knob, a sub volume knob, and a master volume knob. The other 2 are crossover adjustments for the sub and satellite speakers. I’m not sure how yours is set up.

 

[SlugButter]

This is my shop radio, using the same amp board but with a digital screen instead of physical knobs. Regardless of the features that come on these, they all put out 25 watts x 2 and 50 watts to the sub channel.

 

[Kickstand Premium Member]

Nice!