Don`t know the volume played here. But the actual voltage into the speaker is quite easy to measure with a volt meter. I often get suprised how low it is.
An extra check with SPL meter often confirm the results.
70 watts into a 6 inch speaker is quite a lot stress for such a small voicecoil.
guesstimated the diameter from the dB number
Don't think so.
https://ptt.purifi-audio.com/shop/p...,5210,5211,5212,5213,5214,5215,5216,5217,7591
Sorry for that stupid long link numbers...
| Linear excursion, Xlin | ±9.8mm |
| Maximum mechanical excursion, Xmax | ±14.5mm |
| Long term maximum power | 250W |
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Yes you can very easy EQ the low bass without bottom out.
Just love this element!
Yes it couldn't take care of it high volume but the new 3e TPA3255 is nice.
But still love MA12070 at HF as I have!
Perhaps you should have tried the MA5332MS KSD (integrated power supply), It packs a punch and sounds better than the Pillor MA5332 card that I tried first, The treble is excellent and the bass is well controlled.
No sorry it's not same and not differential input.
I don't like the measurements I seen on those chips.
I don't like the measurements I seen on those chips.
Have you already measured your board? Already assembled the analog version?
There are no recommendation for coil induction, only says that the minimal induction must be 0.5 uH. And measuring test goes on 22uH inductors
Depending on the impedance of your speakers and cable length the sweet spot is roughly between 2uH and 5uH.
Many amp chip manufacturers got calculators or spread sheets on there sites.
Many amp chip manufacturers got calculators or spread sheets on there sites.
As far as I can see, Purifi use different terminology - and maybe you've fallen for it.
From https://ptt.purifi-audio.com/shop/ptt6-5x04-nfa-01-ptt6-5x04-nfa-01-283
| Maximum mechanical excursion, Xmax | ±14.5mm | ||
|
I would expect Xmax to mean what they call Xlin, and Xmech to be what they call Xmax.
Having said that, +-9.8mm linear is not to be sneezed at.
Can you explain a bit more clear please (rephrase) or even beter a picture how you connect unbalanced inputs the best way? Just to be sure I don't make any mistake. I want to do 2 unbalanced in and 4 out
According to the manual gain can be low 19db or high 25db. How can you change/adapt the setting?
Hello all ! My CD player with 2Vpp output and MA12070 distorts the sound a little. What can be changed in the scheme?
If the amp is set to 25dB gain, then 2Vpp in makes 35vpp output for BTL configuration. To be able to do that will require the amp’s PSU to provide 35v/2+4v for dropout on the MOSFET. So is your PSU at least 22v?
Another thing to consider is what it the speaker impedance and how many amps does the PSU provide. You could also be current clipping if driving a difficult low impedance load.
If the PSU is either voltage or current limiting the amp, you will get clipping and distortion when driving near max output.
Another thing to consider is what it the speaker impedance and how many amps does the PSU provide. You could also be current clipping if driving a difficult low impedance load.
If the PSU is either voltage or current limiting the amp, you will get clipping and distortion when driving near max output.
If you have 8 ohm speakers with an output lower than 90db, there will be no miracle...24 volt power supply recommended.