Colin Wonfor's SECA amp build
- Thread starter Marra
- Start date
It is normal as the heatsink warms up.
We have stereo through the stunt speakers
Hopefully I will have a proper listen tomorrow
Looking great, what is the PCB on the base please tell us about it, well done nice work.
Col thanks for the comments. The little board is an Avondale soft start. I need to rejig things in order to implement your soft start/speaker protector board.
The vertical transformers was an idea I pinched from Paul's(Quickie) SECA build pics.
Thanks Shaun. Temperature wise the amp sits at 43C after warming up for an hour but as you noted when playing music the temp drops by a few degrees and the heat spreader appears to be working as the temp difference across the sink is only a couple of degrees.
Very much looking forward to a proper listen today
The vertical transformers was an idea I pinched from Paul's(Quickie) SECA build pics.
Thanks Shaun. Temperature wise the amp sits at 43C after warming up for an hour but as you noted when playing music the temp drops by a few degrees and the heat spreader appears to be working as the temp difference across the sink is only a couple of degrees.
Very much looking forward to a proper listen today
''Thanks Shaun. Temperature wise the amp sits at 43C after warming up for an hour but as you noted when playing music the temp drops by a few degrees and the heat spreader appears to be working as the temp difference across the sink is only a couple of degrees''
Yes the spreaders seem to do what they say on the tin.
Much better heat spread over the sink.
Yes the spreaders seem to do what they say on the tin.
Much better heat spread over the sink.
That's a nice build. Where do you guys buy your heat spreaders from?
Incidentally, the stunt speakers, open baffle & full range drivers = pretty flash!
Hi Chris.
I had my spreaders from here
http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=261951456353
needed a little fettling but works well.
This site contains affiliate links for which pink fish media may be compensated.
I bought mine from the same guy. They were slightly twisted so had to do a little bit of straightening.
The speakers are 4" paper cone drivers from Tandy(remember them) so have seen a lot of use..
After listening to some vinyl for a few hours today I have a big grin on my face.
Thank you Colin.
The speakers are 4" paper cone drivers from Tandy(remember them) so have seen a lot of use..
After listening to some vinyl for a few hours today I have a big grin on my face.
Thank you Colin.
So it OK then, good.
So it's very, very good.
IMHO, to my ears and in my set up adding the regulated PSU made a big difference to the overall sound.
A little trade of between the ‘’slightly’’ rosy presentation of the standard SECA and the grip, clarity and super resolution with the Dynamic PSU in pace. (sounds like a bigger amp to my ears)
Spooky amounts of detail. Cavernous bass, sweet but well resolved and smooth treble without any hint of harshness are stand out thoughts.
And a huge soundstage.
It’s also great fun to listen to.
Which I do
Often.
The Dynamic PSU is well worth the extra work involved with fitting it.
Keith
My spreaders where also slightly twisted (like me) but its soft metal and easy to sort with a little effort.
Much less expensive than some of the alternatives.
cj66
pfm Member
Hi Chris.
I had my spreaders from here
http://rover.ebay.com/rover/1/710-5...0001&campid=5338728743&icep_item=261951456353
needed a little fettling but works well.
Thanks Shaun, will be needing those on another build.
You sound pretty impressed with the fully fledged SECA.
This site contains affiliate links for which pink fish media may be compensated.
shaun, Keith very nice work there great looking amps and it sound like the sound as good also
Might get a couple of boards for a future project, when I stop being addicted to R2R players
Alan
Thanks for the nice words Alan but my effort is a little bit of a lash up.
I'll get on to the chassis in due course.
These amps do sound really good and deceptively powerful given the low OP Watts. big open, detailed (pin drop) sound with great Bass and with the PSU quite unlike anything that I've heard.
Better than the Voyagers? no just different which is what I was hoping for.
I must admit to a certain fun factor in putting 2A across 1 OP device. makes the heart race a little.
If you are looking for something different then these amps are a good place to look.
just drop Colin a PM here or AOS.
Thanks for the nice words Alan but my effort is a little bit of a lash up.
I'll get on to the chassis in due course.
These amps do sound really good and deceptively powerful given the low OP Watts. big open, detailed (pin drop) sound with great Bass and with the PSU quite unlike anything that I've heard.
Better than the Voyagers? no just different which is what I was hoping for.
I must admit to a certain fun factor in putting 2A across 1 OP device. makes the heart race a little.
If you are looking for something different then these amps are a good place to look.
just drop Colin a PM here or AOS.
Look out for the new 100W/ch to be sold ready made only.