This SounDigital SD400.4 is a 4ch, yet it uses a single TAS5630 chip? The chip says it will do either 600W x 1 @ 2Ohm; 300W x 2 @ 4Ohm. Are they somehow splitting the power into 4 channels? Orr... I have never really looked much into their design... just want to make sure I'm ordering the right chip. Definitely going to have to try and figure out what they have going on in this amp if that is the right chip, lol.
Looks like the only ones available are the TAS5630BPHD version. Slightly less output bridged.
Edit: I'll post a couple pictures once my post is approved...
Thanks in advance!!
Looks like the only ones available are the TAS5630BPHD version. Slightly less output bridged.
Edit: I'll post a couple pictures once my post is approved...
Thanks in advance!!
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That was an education and the strangest configuration I've ever seen except. possibly Rockford's BD amps.
It has 4 channels but not a conventional 4 channels for an amp that uses a single-ended supply.
When used in stereo, it's a normal H-bridge configuration.
In mono, they connect two channels in parallel, after the filter inductor.
The reduction in power is for the B revision. It was also stated on the TI site (not by TI) that the over-current threshold was reduced in the B revision and it's only rated for 3 ohm mono now.
What's the rail voltage in the amp?
It has 4 channels but not a conventional 4 channels for an amp that uses a single-ended supply.
When used in stereo, it's a normal H-bridge configuration.
In mono, they connect two channels in parallel, after the filter inductor.
The reduction in power is for the B revision. It was also stated on the TI site (not by TI) that the over-current threshold was reduced in the B revision and it's only rated for 3 ohm mono now.
What's the rail voltage in the amp?
Thanks for the info. at 14.4, they're pushing it hard but not many charging systems operate at 14.4 (except maybe some Ford vehicles?).
I looked up the owner's manual for the amp and it doesn't show or recommend the connection that they used for the 600w rating for the IC.
I looked up the owner's manual for the amp and it doesn't show or recommend the connection that they used for the 600w rating for the IC.
I agree, but with many people using lithium banks in vehicles these days it's nothing to be charging 14.4+v.
So I'm likely safe to run the B revisions? Or should I attempt to locate the original or A versions?
So I'm likely safe to run the B revisions? Or should I attempt to locate the original or A versions?
Manual says it's good to 16v... I should try 15.9v... can just imagine how hard it's being pushed there, lol.
Edit: 54.1v @ 15.9v at 16.1v it protected.
Edit: 54.1v @ 15.9v at 16.1v it protected.
If the owner is using it as suggested in the owner's manual, I think the B version would be OK.
Is the owner using this in some sort of competition vehicle or in normal system with a normal charging system?
The recommended maximum operating voltage for the IC is 50v according to the datasheet.
Is the owner using this in some sort of competition vehicle or in normal system with a normal charging system?
The recommended maximum operating voltage for the IC is 50v according to the datasheet.
If you're going to talk to him, ask him what load impedance he's running on each channel, as well.
He says it was in the 2015 Ram. Stock charging system and running 2 pairs of JBL 6x9s. "Probably 3 ohm speakers." He's pretty sure the truck charges "a bit over 14v".
After a short chat, we've decided I will remove a wrap or 2 (probably just 1 as there are only 10 wraps) from the transformer to lower the rail a bit. Hopefully in turn making it a bit more reliable. He's not overly concerned with the slightly less output. I think this will be the best route. Then, I'll toss in the B revision. Should be good to go...
Thoughts??
After a short chat, we've decided I will remove a wrap or 2 (probably just 1 as there are only 10 wraps) from the transformer to lower the rail a bit. Hopefully in turn making it a bit more reliable. He's not overly concerned with the slightly less output. I think this will be the best route. Then, I'll toss in the B revision. Should be good to go...
Thoughts??
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I don't think removing a turn will be necessary at 3 ohms, each going back to its own independent channel.