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300w Chinese power amp
Posted: Mon Mar 15, 2021 10:08 pm
by TGillies
Seen these knocking around ebay lately and i have to say i'm very tempted...
https://www.ebay.co.uk/itm/174431288097 ... 4431288097
Does anyone have any experience with these?
Before anyone knocks it giving it the "Chinese stuff is cheap shite" chat... i've been using the 25w tx version of this and has been working flawlessly for months...
https://www.ebay.co.uk/itm/0-25W-Adjust ... Swyv9fUUF0
I'd go as far to say its one of the best tx's ive used (and ive had a fair few). This would also drive the amp no problem as its adjustable 0-25w.
Thoughts?
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 1:17 am
by alfaeire
"air cooling"
So like... No fan?
Sent from my ONEPLUS A5010 using Tapatalk
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 1:56 am
by yellowbeard
Those yokes are all over ebay, in some of other vendors pictures you can see three fans, so the "temperature controlled air cooling" part means the fans only switch on when it's toasty:
https://i.ebayimg.com/images/g/mEwAAOSw ... -l1600.jpg
For me, I would like my £350 notes more than a (potentially) suspect amp. There is very little information that you would really like to see before buying, to me this is quite deliberate to keep the item "as described" - so if it's hot, sproggy, drinks electricity and is delicate you're stuck. It is in a very handsome quality looking case...
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 8:33 am
by RF-Head
Ask them for a picture of the insite of the box
so we can see the amplifier and it there is a LPF mounted in the box
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 11:21 am
by TGillies
RF-Head wrote: ↑Tue Mar 16, 2021 8:33 am
Ask them for a picture of the insite of the box
so we can see the amplifier and it there is a LPF mounted in the box
I’ve requested pictures from the vendor.
With regards to fans, it’s the same with the 25w rig, fans only come on when over a certain temperature, however I have always added external fans to my rigs, the 25w never goes above 34c. Same goes for my current 100w Veronica amp.
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 2:58 pm
by ronald001
isn't 500US dollar a LOT of money for such a (Chinese) amp?
I guess that a well known builder on this forum can build you a better quality 300w AMP for less.
Re: 300w Chinese power amp
Posted: Tue Mar 16, 2021 4:24 pm
by TGillies
ronald001 wrote: ↑Tue Mar 16, 2021 2:58 pm
isn't 500US dollar a LOT of money for such a (Chinese) amp?
I guess that a well known builder on this forum can build you a better quality 300w AMP for less.
True that may be but I’ve tried doing business on the forum a few times and never worked out, I’d rather pay the extra on eBay for peace of mind
Re: 300w Chinese power amp
Posted: Wed Oct 13, 2021 5:32 pm
by TGillies
** UPDATE **
So I eventually gave in to temptation and snapped one of these up. Had some issues getting it in the UK, had to pay all kinds of charges including £93 for tax on top of the original £340 listing price.
I've not had a chance to properly use it yet due to antenna issues, but I've managed to test it to some extent and, let's just say everything in my studio was buzzing! (including my head). This unit is all power, and as far as I can see it goes way past the 300w output power. Have only tested it for a short space of time but I was getting 350w out it with only putting in 3w.
RF-Head wrote: ↑Tue Mar 16, 2021 8:33 am
Ask them for a picture of the insite of the box
so we can see the amplifier and it there is a LPF mounted in the box
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 1:41 pm
by BriansBrain
Seems to be expensive for the power out
But the case looks great
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 4:07 pm
by teckniqs
TGillies wrote: ↑Wed Oct 13, 2021 5:32 pm
** UPDATE **
So I eventually gave in to temptation and snapped one of these up. Had some issues getting it in the UK, had to pay all kinds of charges including £93 for tax on top of the original £340 listing price.
I've not had a chance to properly use it yet due to antenna issues, but I've managed to test it to some extent and, let's just say everything in my studio was buzzing! (including my head). This unit is all power, and as far as I can see it goes way past the 300w output power. Have only tested it for a short space of time but I was getting 350w out it with only putting in 3w.
RF-Head wrote: ↑Tue Mar 16, 2021 8:33 am
Ask them for a picture of the insite of the box
so we can see the amplifier and it there is a LPF mounted in the box
The inside of this....
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 4:21 pm
by teckniqs
alfaeire wrote: ↑Tue Mar 16, 2021 1:17 am
"air cooling"
So like... No fan?
Sent from my ONEPLUS A5010 using Tapatalk
I see there is two fans but looks like they are completely obstructed to by the 'exciter' case placed above it.
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 6:08 pm
by Barry06
Does the base of the box come off?
Would be nice to see that amp board, under the heat sink.
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 8:26 pm
by TGillies
Barry06 wrote: ↑Thu Oct 14, 2021 6:08 pm
Does the base of the box come off?
Would be nice to see that amp board, under the heat sink.
Yeah mate but more screws attached to the board itself, I’d rather not mess about with it too much as knowing my luck I’ll fuck it up… the thing works and works well that’s all that matters to me
Re: 300w Chinese power amp
Posted: Thu Oct 14, 2021 9:27 pm
by Barry06
TGillies wrote: ↑Thu Oct 14, 2021 8:26 pm
Barry06 wrote: ↑Thu Oct 14, 2021 6:08 pm
Does the base of the box come off?
Would be nice to see that amp board, under the heat sink.
Yeah mate but more screws attached to the board itself, I’d rather not mess about with it too much as knowing my luck I’ll fuck it up… the thing works and works well that’s all that matters to me
Yeah, no need to dismantle the thing. It does look the part mate, you’ve got a healthy setup there. Looking forward to hearing you on air.
Re: 300w Chinese power amp
Posted: Fri Oct 15, 2021 5:48 am
by TGillies
Barry06 wrote: ↑Thu Oct 14, 2021 9:27 pm
TGillies wrote: ↑Thu Oct 14, 2021 8:26 pm
Barry06 wrote: ↑Thu Oct 14, 2021 6:08 pm
Does the base of the box come off?
Would be nice to see that amp board, under the heat sink.
Yeah mate but more screws attached to the board itself, I’d rather not mess about with it too much as knowing my luck I’ll fuck it up… the thing works and works well that’s all that matters to me
Yeah, no need to dismantle the thing. It does look the part mate, you’ve got a healthy setup there. Looking forward to hearing you on air.
Just waiting for new 5/8 coming, had some issues with mine and also had to replace cable. Not long!
Re: 300w Chinese power amp
Posted: Fri Oct 15, 2021 8:01 am
by teckniqs
Where did you order the 5/8 from?
Re: 300w Chinese power amp
Posted: Sat Oct 16, 2021 11:16 am
by TGillies
teckniqs wrote: ↑Fri Oct 15, 2021 8:01 am
Where did you order the 5/8 from?
I get them from a guy in Slovakia, this will be my 2nd from him, I’ve used Veronica ones in the past too but these are the best I’ve used.
https://vinnant.sk/store/product/fetrc8 ... -connector
Re: 300w Chinese power amp
Posted: Sat Oct 16, 2021 1:54 pm
by Barry06
Nice find! May order myself one of them.
What problem developed with your current 5/8 wave?
Re: 300w Chinese power amp
Posted: Sat Oct 16, 2021 2:34 pm
by TGillies
Barry06 wrote: ↑Sat Oct 16, 2021 1:54 pm
Nice find! May order myself one of them.
What problem developed with your current 5/8 wave?
Birds like to sit on ground radials and chewed through outer cable...
He has improved the cable on new version and made it more robust so hopefully shouldnt happen again. I also plan to wrap ground radials in barbed wire this time
Re: 300w Chinese power amp
Posted: Sat Nov 13, 2021 10:47 am
by Maximus
I’ve got the exact same one at home and it’s the best antenna I’ve ever had.
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