What is the best 200w class-d amplifier with builtin power and bluetooth you can get for speaker testing ?
Speaker testing is best done using linear amplifiers as they generally tend to have better THD / IMD & PSRR when compared to most class-D amps. Typical class-D performance at lower power is also somewhat troublesome due to switching residual etc. However, they may still be used for high-power testing of sub-woofers.
Ok. Thanks. What is the cheapest 200w linear amplifier that is good enough for speaker testing ? If possible, it should include bluetooth
I've never used a 200W power amp to test speakers. <1W is enough to measure parameters. A dozen watts tells how it sounds. I have built speaker systems where 600 Watts would not stress the reliability.
Is this a good amplifier for speaker testing ? https://www.crutchfield.com/p_543A2100R/Russound-A2100-factory-refurbished.html?cc=01&tp=180
Since no cheap single-chip linear amplifier would do 200W, I suggest you don't waste your time thinking along those lines, anymore.
For speaker testing, try to look at the performance at 1-5W power instead of irrelevant powers like 100W etc, as that's exactly where you would be operating. In order to be able to "confidently" neglect the non-ideal effects of the amplifier, (preferably) look for at least two zeroes before the decimal point in the % THD / IMD figures at these power levels. Another figure of merit for a voltage source is high damping factor or low output impedance.
For speaker testing, try to look at the performance at 1-5W power instead of irrelevant powers like 100W etc, as that's exactly where you would be operating. In order to be able to "confidently" neglect the non-ideal effects of the amplifier, (preferably) look for at least two zeroes before the decimal point in the % THD / IMD figures at these power levels. Another figure of merit for a voltage source is high damping factor or low output impedance.
I recommend a chipamp like LM 3886T with ne5532/4 op-amp as pre stage amplification. Good enough to push 12 inch driver with ease.
Thanks. Looks interesting. What is the size of the board ? Is this the cheapest version ?
What is the best bluetooth module it could be connected to ? and how could it be connected ?
What is the best bluetooth module it could be connected to ? and how could it be connected ?
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As far as I can see you can only buy the modulus-86 pcb board, but you have to get the parts yourself. I am also not sure if it has enough power to drive the speaker, but I really like it
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I believe 60wRMS is more than enough to test speaker parameters & to listen how your spkr sounds. But if you want more power output.....
https://neurochrome.com/products/modulus-686
Best Regards
https://neurochrome.com/products/modulus-686
Best Regards
Please log in to the website for all the information. I believe only pcb is available for mod-86. The problem is Lm3886 is currently out of stock worldwide as far as i know but you can try to communicate/send email to Tom for help. All other parts are available at mouser or digikey.
I usually use surplus public address amps for this. Bonehead protection, peak limiting and enough power to not be a problem. Most of them also have multiple input connectors which is rather handy for doing a loopback without needing splitters. QSC RMX amps are pretty easy to get second hand.