• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Choosing an amplifier for Xarus 5000 (fosi or aiyima or others)

I've always been interested. And if you add a couple more exactly the same speakers with the same amplifier to the system. How will this affect the overall volume?
 
Ufff pore things beaten clipping to death. Get a deacent second hand Yamaha like A-S/R-S 700 with those that will be enough to pass 4m (far field) white noise calibration (85/88 dB mono/stereo) and that's about the limit they can do. If you want to party take a look for a pair of JBL 4673A and party it will give you about 15 dB more headroom.
 
I've always been interested. And if you add a couple more exactly the same speakers with the same amplifier to the system. How will this affect the overall volume?
+3 dB up to 6 below 60 Hz.
 
Those small 3255 amps are simply not able to run high power for more than a few moments because of construction. The Chinese love to build cheap things that sell well and amaze on first sigth. Terminal function is secondary. So these are about 1/3 the size such an amp chip would need with passive cooling, saving on material, wheight and shipping.
Anyway, many HIFI amps are build just the same: High output, too little cooling capacity. AVR's have build in fans and usually external, active subwoofer, so the main load is bass free under 80 Hz .

My advice for you is to get a low cost PA amp for the bass as your speaker does bi-amping. Use the Fosi or the like for the mid-high input. That way you keep the sound quality and add permanent power where it counts.
The mentioned Behringer may not be the right thing, it is a "studio amp" with passive cooling and may not permanently deliver what you need. Get some amp with a switched or regulated fan, even if it is loud, you won't hear it when it kicks in at deafening SP levels.

If the 3255 still runs too hot, get a second Fosi one and run it in Mono mode. That should help.
 
Last edited:
You need something like this
https://www.thomann.de/de/the_t.amp_e_1500.htm

This has ten times the power of the TPA3255 amplifier and several protective circuits.
It is also slightly cheaper than two Fosi mono amplifiers.
However, I would also buy PA speakers for your needs.
 
You need something like this
https://www.thomann.de/de/the_t.amp_e_1500.htm

This has ten times the power of the TPA3255 amplifier and several protective circuits.
It is also slightly cheaper than two Fosi mono amplifiers.
However, I would also buy PA speakers for your needs.
You don't think a 1000W+ amp is likely to blow the guts out of speakers rated for power up to 250W?
 
Back
Top Bottom