TI TPA3100D2, Amazing Class D Amp

[goo]

Thanks Rich,

I have the same noise issue with my little Sure 3110 Golden Ratio boom box. I will definitely try your mod, i should be able to get one of the baffles opened if i am careful. I used minimal with glue to be able to open it if necessary 😉)

goo

 

[rhing]

Thanks Rich,

I have the same noise issue with my little Sure 3110 Golden Ratio boom box. I will definitely try your mod, i should be able to get one of the baffles opened if i am careful. I used minimal with glue to be able to open it if necessary 😉)

goo

Nice little rig you have there. One of the other things I'll do is use some Belden 88641 plenum cable as hook-up wire. This is a shielded cable with 2 x 24AWG Teflon-insulated stranded Copper conductors. I'll just tie the shields to signal ground at the RCA inputs to drain any RFI.

 

[rhing]

Update: Per wushuliu's advice, I did a power supply cap swap and installed a pair of 1,500uF / 25V Panasonic FM low ESR caps. After running the amp for a few hours, I noticed the noise that annoyed me before had significantly diminished to the point where I no longer need the resistors connecting the signal inputs to signal ground. The cap upgrade from the stock caps has improved the bass, increased the size of the soundstage and made this a better sounding amp overall.

 

[goo]

Thanks Rich, good to know i will test it when i open the box 🙂

 

[Buehgemeiste]

is there a pbtl-mod for those boards?

 

[crepa]

Hello,
Livraison gratuite! Yl2020 nouvelle 20 W + 20 W classe D carte amplificateur numrique 12 V 24 V module de mini amplificateur fini dans Autres composants lectriques de Fournitures et composants lectroniques sur AliExpress.com | Alibaba Group

I think buy one , good idea or not ?

 

[Buehgemeiste]

i saw them a few days ago, but didn't realize that those are 3100's.
i found one a little bit cheaper:

Yl2020 neue 20w + 20W class D Digitalverstrker bord 12v 24v mini audio verstrker modul gute in Den Leistungsverstrker modul ti die chip-design der uns, mit Unterspannung, berstrom, Kurzschluss kurzschlussschutz fu aus integrierte Schaltung auf Al

can't go wrong for 4,58€.

edit:
ordered immediately!

 

[Buehgemeiste]

Someone should try those new Sanwu TPA3110:
TPA3110 PBTL einkanal Digitale endverstrkerbrett 30 Watt in Beschreibungen: 100% nagelneu und hohe Qualitt Mono pbtl digitale Verstrke aus Verstrker auf AliExpress.com | Alibaba Group
I've seen them cheaper on ebay, but ebay links seem to be country-specific.

 

[xrk971]

Isn't the 3118D2 PBTL Sanwu Blue technically a better chip than the 3110? They are about the same size and cost here.

 

[Buehgemeiste]

oops, i just recognized that i mistook the 3100 for the 3110 thread.

@x:
i saw them for 1€ less than the 3118.
maybe somebody still wants to try it.