The Boominator - another stab at the ultimate party machine

[theAnonymous1]

Actually, depending on what type of SMD caps you are talking about, higher voltage might be better.

For exampe, my cap of choice right now is 1uF 100V X7R ceramics (mainly because I have a few thousand). The high voltage rating helps minimize some of the "nasty" qualities of ceramic caps that often make audiophiles cringe.

I can series/parallel these for almost any value I need and still keep the size down to only a fraction of what a bulky film cap would be.

[Saturnus]

I use these now, sound is excellent (as they bloody well should be at that price). The tolerance just means you have to buy several and then match them which isn't a problem since you have to buy a certain number of SMD at a time anyways. As a rule of thumb, take the tolerance number in percent and multiply with the number you need to be roughly certain you have enough to match them well.

AVX|CB038B0154JBA|CAPACITOR, 150 NF, 16V, 1812, | Farnell Danmark

You can get far cheaper ones though from Wima or Panasonic but these are the best ones I know of at all.

[theAnonymous1]

You can get PPS caps in the uF range as well, though they are tough to find.

Also, you have to be careful soldering these by hand; they melt very easily.

[Saturnus]

Originally Posted by theAnonymous1

You can get PPS caps in the uF range as well, though they are tough to find.

Also, you have to be careful soldering these by hand; they melt very easily.

Yeah, I forgot to mention that

Luckily you always have a few spares (since you have to order a lot more than you need anyways).

I should note that these are the best input caps I have ever heard, btw, they beat everything else regardless of price. It's not that they're PPS in itself but that these just seem to be the best input capacitors at all.

[Buckapound]

Saulty, it would be easy enough to put a switch on the input of your amp to be able to go back and forth between the higher and lower value input caps if you need the amp to be full-range for your other applications.

--Buckapound

[saulty]

Soldering definitely isn't a strength of mine and those little caps without leads terrifies me. Would these wima caps be a decent alternative? Seems like it would make for an easier soldering session on the sure board.
Electronic Components & Supplies

[Saturnus]

Yup. They're pretty good too.

[17DoubleE]

Hey everybody,

I've read and re-read this message thread and like many of you, have the bug to build one. Hats off to Saturnus for the skillful design work and for sharing it with us.

I like the design details of your Boominator, Saturnus, and with your permission plan to pattern mine off of your design.

I'm from the USA where I can't seem to locate either the HP10W or the Zomax HP100 piezos. From this thread, and a review of the specs on the partsexpress website, I understand the GW-1058 to be a suitable substitute for the HP10W. I read the discussions about a few other tweeters, but didn't see recommended a substitute tweeter that's on par with the HP 100.

Do any of you have a recomendation for a good-sounding tweeter like the HP 100? Is there an even more efficient speaker than the GW-1058 (with appropriate specs) that is not too terribly expensive?

Thanks, Bill

[Love Below]

Have you startet on your new boominator saturnus?

[J.R.Freeman]

Originally Posted by Davey T

You guys will probably like this my mobile disco:
...
It sounds awesome, is really loud and runs for hours. The trouble is its a bit fragile because i rushed it to get it working for this festival.

That is awesome! And it looks like you've attracted the right kind of crowd too