Hi @doomy86
Were you able to finish your Boominator?
Really curious about the amp you ended up choosing.
Also @lutkeveld do you happen to have some of those HP10W left?
Many thanks!
Were you able to finish your Boominator?
Really curious about the amp you ended up choosing.
Also @lutkeveld do you happen to have some of those HP10W left?
Many thanks!
Bru5 (DSP and Bluetooth)
TPA3255, Module 2.0 stéréo haute puissance avec Interface de réglage DSP
https://a.aliexpress.com/_mqzLjhm
It would be ideal to remove the cover to dissipate the heat if the amp is used a lot.
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Thanks for your answer @denbret !
I couldn't find any info on the efficiency of this one, plus I'm not sure how to deal with the 5w output
This looks close to the Max20 amp : https://www.kiwi-electronics.com/en/stereo-20w-class-d-audio-amplifier-max9744-946
Would you advise going with something like this for the original design? (no DSP sadly)
I couldn't find any info on the efficiency of this one, plus I'm not sure how to deal with the 5w output
This looks close to the Max20 amp : https://www.kiwi-electronics.com/en/stereo-20w-class-d-audio-amplifier-max9744-946
Would you advise going with something like this for the original design? (no DSP sadly)
They do sound good. I've never spent much time with the Soundboks but hear they focus on loud. 
We haven't heard from Saturnus in many years. Does anyone know if he is still with Soundboks? I hope all is well with him.
As an FYI - I still have a drivers in the USA (bass and tweeters) to make a couple more boomboxes. Shipping outside the USA is cost prohibitive.
We haven't heard from Saturnus in many years. Does anyone know if he is still with Soundboks? I hope all is well with him.
As an FYI - I still have a drivers in the USA (bass and tweeters) to make a couple more boomboxes. Shipping outside the USA is cost prohibitive.
Just because of this "Boominator" the price of a very simple chassis quadrupled. I'm quite sure there are other chassis out there that will do just as good or better, for a more reasonable price. For 1 of these steal basket thingies I can buy 2x 12" cast basket PA chassis. Maybe one should think about it before ordering.
An idea would be to have a peek at
https://www.thomann.de/de/10_zoll_lautsprecher.html?oa=pra&gk=PALPLK10&sp=solr&cme=false&filter=true
for people in Europe and Brexitania.
An idea would be to have a peek at
https://www.thomann.de/de/10_zoll_lautsprecher.html?oa=pra&gk=PALPLK10&sp=solr&cme=false&filter=true
for people in Europe and Brexitania.
I would strongly discourage anyone from selecting a random driver and expecting to have anything remotely close to the Boominator's performance.
The original drivers and some limited substitutes are the only options. Initially the drivers were readily available and low cost. That doesn't seem to be the case now.
The original drivers and some limited substitutes are the only options. Initially the drivers were readily available and low cost. That doesn't seem to be the case now.
Choosing another driver doesn't mean to randomly pick anything. In allmost any case a change of the tuning is needed. Nothing that is impossible to do with a few data and a simulation prog. I have seen more than 120$ asked for the original driver, which makes the construction very questionable.
It’s a real pity that there isn’t a separate forum for ‘portable’ sound’ and that this thread is tucked away in classD amps, could have easily gone to ‘digital source’ because of the Bluetooth, or ‘tools’ because you’re using a battery drill to construct it.
So this mammoth thread has been the go to thread for portable sound systems, except you can only talk about one design, that has been abandoned by the original author, and not everyone wanted a 25kg ‘portable’ box, (which is how the boominator mini came about after all). And judging by how popular those shitty Bluetooth speakers are, (okay, some are pretty good). There is clearly a demand for diy boomboxes but it hasn’t found a home on diyaudio, and I’m not saying it’s anyone’s fault, just that it’s a shame it has developed this way.
So this mammoth thread has been the go to thread for portable sound systems, except you can only talk about one design, that has been abandoned by the original author, and not everyone wanted a 25kg ‘portable’ box, (which is how the boominator mini came about after all). And judging by how popular those shitty Bluetooth speakers are, (okay, some are pretty good). There is clearly a demand for diy boomboxes but it hasn’t found a home on diyaudio, and I’m not saying it’s anyone’s fault, just that it’s a shame it has developed this way.
People have tried, and failed miserably... the boominator was designed and tuned around the exact parameters of 3 different drivers... all of which are now discontinued.... tweak all you like but you won't get the same volume or quality in the same compact unit...
I had a look at the original speaker TSP and data sheet. Nothing really special. It should be possible to find a close replacement.
The problem is that such speaker often have no data published, as they are used for cheap cabinets. Industry chassis. Which will be found in instrument boxes like bass or guitar cabinets. Loud, no low bass.
Because of the outside use of the Bominator there is no low frequency reproduction needed / possible. Such speakers are not found in the HIFI DIYS market.
PS did anyone do independent TSP measurements of the chassis?
The problem is that such speaker often have no data published, as they are used for cheap cabinets. Industry chassis. Which will be found in instrument boxes like bass or guitar cabinets. Loud, no low bass.
Because of the outside use of the Bominator there is no low frequency reproduction needed / possible. Such speakers are not found in the HIFI DIYS market.
PS did anyone do independent TSP measurements of the chassis?