» Electronics » Sound and Acoustics "Portable column" Greetings from the seventies "

Portable column "Greetings from the seventies"



The author of Instructables under the nickname ImpactDIY made a portable speaker in the style of the seventies. Inside, of course, everything is modern: a Class D amplifier, Bluetooth ...

The master begins with the manufacture of cardboard parts of the case:



2 pcs. 170x170 mm - side walls

2 pcs. 170x260 mm - upper and lower walls

4 things. 170x245 mm - front and back walls (both two-layer)

6 pcs 20x220 mm - carrying handle

The master marks out two large openings for dynamic heads and one small for a bass reflex tube.



Cuts out:



Adhesive dynamic heads:




Assembles the case:





Then the handle:





As a class D amplifier, ImpactDIY takes the PAM 8610 module, where there is even a variable resistor for adjusting the volume:



He needs 12 V, so the master uses three 18650 batteries and an HX-3S-FL25A 3 SBMS charge-discharge controller with balancing function:

Portable column


Do not do this, either spot welding or compartments! Batteries must be protected!



The wizard adds a power socket (PSU is suitable from the router) and a switch:



Bluetooth module and 5-volt buck converter for it:




Glues the power socket on the back wall:



Sets everything in its place electronics and bass reflex tube:



It paints the front panel (it, as we recall, is two-layer, one layer has already become part of the body, the second is removable) in black and is pasted over with a cloth:




Installs a handle and a front panel with a cloth:




Adheres a sound absorber to the rear wall:



The column is ready to go.
5.6
5.6
4.6

Add a comment

    • smilesmilesxaxaokdontknowyahoonea
      bossscratchfoolyesyes-yesaggressivesecret
      sorrydancedance2dance3pardonhelpdrinks
      stopfriendsgoodgoodgoodwhistleswoontongue
      smokeclappingcraydeclarederisivedon-t_mentiondownload
      heatirefullaugh1mdameetingmoskingnegative
      not_ipopcornpunishreadscarescaressearch
      tauntthank_youthisto_clueumnikacuteagree
      badbeeeblack_eyeblum3blushboastboredom
      censoredpleasantrysecret2threatenvictoryyusun_bespectacled
      shokrespektlolprevedwelcomekrutoyya_za
      ya_dobryihelperne_huliganne_othodifludbanclose
17 comments
The presence of grandchildren does not prevent him from doing homework.
Offer yours, which in your opinion is worthy of our attention.
Simple homemade products are also needed, they can be repeated by children or those who do not really understand in these matters.
Then, no one forces you to copy any homemade product, but you can take some moments as a basis.
For example, to tear off a body made of another material, etc.
Above is a comment about the age of this person.So for the “patsyk” such an article might have worked, but for a person with a ring on his finger it’s time to have been ill with such nonsense, let alone not put it on public display. The rhetorical question is “Where are we going?” If such products surprise us. Adult uncles do something at the level of elementary school lessons, and we admire- "He did it!"
Quote: Khatul Madan
Well, you did not boast of your know-how, and even more so did not try to publish in magazines. Well, for myself, in haste or mock-ups for the mock, I made of hardboard, and did not show them to anyone.

The man did it himself, showed it to others, everything is fine.
I remember such a player, in the villages in those years he was dragged from a hut to a hut for gatherings and, sometimes, they poured wine (moonshine), and the equipment worked, it did not crumble. I doubt that this “column” will survive such a test drive.
Better than a patsyk would sit in the yards herat beer
Judging by the hands in photo number 2, this patsyka there are already grandchildren! smile
Better than a patsyk would sit in the yards herach beer. Now this box is sweetening your ears. Well done kid keep it up !!!
It was glued not with PVC, but with dermatin. And the material itself was something like fiber.
the box was strong enough
Yes, and I stuffed the speaker into a dense box, but it's not from corrugated cardboard so!
This is cardboard. Not corrugated, and glued with PVC, but - cardboard
Do not confuse, this is not a corrugated cardboard at all, it is closer to particleboard or MDF. smile
Author


This is cardboard. Not corrugated, and glued with PVC, but - cardboard. All of it. Both halves of the body, front wall with dynamic heads. Only at the bottom half the wall facing the user is metal. So they used it in the seventies from cardboard, albeit not corrugated. Moreover, in the current language, in production. And it even worked well.
Well, you did not boast of your know-how, and even more so did not try to publish in magazines. Well, for myself, in haste or mock-ups for the mock, I made of hardboard, and did not show them to anyone.
Somewhere in the 90s, in order to listen to the radio at work, I had to use a cardboard box for acoustic design. The 2GD-40 speaker and the receiver itself (Polyakova, with a printing coil, if you remember this) had to be brought from home, the rest (IP, ULF and case) - from what was at work. Since all this worked not loudly, the box was strong enough, there were no complaints about hi-fi, the sound suited me.
. Bluetooth module and 5-volt buck converter for it:
It would be nice to have some kind of information about these components, or a reference.
In the seventies, they did nothing at all from the corrugated cardboard (except the packaging itself), no one took it seriously for material for any crafts. They are now making all sorts of crap out of him on thermosnots, and they are delighted with their "masterpieces", for which they would have ridiculed for sure if they hadn’t taken their hands off in the seventies.
Amused phase inverter in a cardboard box.))
made a seventies style portable speaker
In the seventies, such garbage was not made of corrugated cardboard! smile

We advise you to read:

Hand it for the smartphone ...