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Dx Blame MKIII-Hx  - Builder's thread
Dx Blame MKIII-Hx  - Builder's thread
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Old 15th November 2011, 09:45 PM   #431
destroyer X is offline destroyer X  Brazil
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Default I see Wayne.... so... go ahead

regards,

Carlos
 
Old 16th November 2011, 02:50 AM   #432
canonnica is offline canonnica  Canada
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Worked few hours on the front plate. I wanted to keep it simple...

Three LEDs and one small-current 12V pushbutton for power on/off.

Left LED is AMBER and is for standby.
Middle LED is BLUE and is for power-on.
Right LED is RED and is for overheat.

I've made a small logical circuit that will manage the LEDs, the overheating situation and the power on/off. This circuit will feed the softstart and the loudspeaker protection circuit. This circuit will always be powered; it's powered by its own small 15VAC/20VA trafo (I have a master switch at the power-entry module that will remain to the ON position to feed it). You can see in the schematics that whatever the position of the on/off switch is, the power is interrupted on overheating condition and the standby/power-on LEDs are still showing the actual status of power-switch.



Some pics below...
Attached Images
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File Type: jpg IMG_8933.jpg (209.3 KB, 398 views)
File Type: jpg IMG_8936.jpg (249.6 KB, 373 views)
File Type: jpg IMG_8941.jpg (214.4 KB, 354 views)
File Type: png Power-on.png (9.2 KB, 349 views)
 
Old 16th November 2011, 07:42 AM   #433
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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Thumbs up Dear friends I'm happy with my first Dx Blame experience!

Dear people,

Finally I tested the first board last night and I was amazing that works the first try, only using +24 0 -24V, the woofer you see is 8 ohms, and about describing the sound it was really nice and amazing so clear voices, drum bass, at the biggining I was to be honest afraid that something might go wrong but I remember the resistor on the fuses area so I solder them, and no matter what, music came out nice and clear!.... but the must amazing thing is that there is no homing sound coming out from the woofer completely silence, I was playing some different types of music and I do notice the difference this baby reproduce any type of sound notes!
really precise, the woofer is 15 inches and it was moving hard for the first time in many years wow!, also I check for CCS heat sink temperature and it didn't get even warm at all probably because I'm not using the correct supply but yes my friends and happy that it went well, another thing tomorrow I will try using the other toroidal that supplies +54 0 54V after rectification and filtering to see how it reacts of course I have to check the heat sink again to make sure the thermal paste is in contact with the main transistors, and I got to check the emmiter voltages this time lol wooohoooooooooo!

Ok my friends have a good one thanks for all the tips and advices specially
mister destroyer x!, alright have a good one guys.

Regards
vargasmongo3435
Attached Images
File Type: jpg test is complete 01.jpg (103.8 KB, 170 views)
File Type: jpg test is complete 02.jpg (103.9 KB, 141 views)
File Type: jpg test is complete 03.jpg (96.1 KB, 132 views)

Last edited by vargasmongo3435; 16th November 2011 at 07:58 AM.
 
Old 16th November 2011, 09:01 AM   #434
destroyer X is offline destroyer X  Brazil
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Default Great news from Cannonica and Vargas

Thank you guys as you are sharing pictures and reviews about the unit.

Good this circuit you made Cannonica...congratulations.

It is awesome when we put parts together and we make them work.... this is creation...we feel alike God creating things...nice feelings.... enjoyment, pride, satisfation, happyness...the success!

regards,

Carlos
 
Old 16th November 2011, 02:54 PM   #435
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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Talking First Video testing sound

Hi guys here is a link of the first test with MKIII Hx is so amazing first go on my first attend lol my camera is not able to capture all the sounds but in real life oh my God out of this world!!!


here is the link: http://www.youtube.com/watch?v=s5pt0_9bCMk


regards
vargasmongo
 
Old 16th November 2011, 03:28 PM   #436
Junie is offline Junie  Philippines
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hahaha!! damn, put that speaker in a box so we can hear the true music

Anyways, congrats on your build.
 
Old 16th November 2011, 03:45 PM   #437
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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Talking I wish a have one bro

Quote:
Originally Posted by Junie View Post
hahaha!! damn, put that speaker in a box so we can hear the true music

Anyways, congrats on your build.

I have another speaker with the box I'm making another video
 
Old 16th November 2011, 03:45 PM   #438
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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thank you Junie!
 
Old 16th November 2011, 04:14 PM   #439
destroyer X is offline destroyer X  Brazil
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Default Great....more videos..... more!

Yessssss!

Use a coil in series with your woofer dear Juan.... 250 turns of 1 mm wire inside air core, can be air core from medicine adhesive, some band aid reel or similar.... this will cut mids and treble to the woofer, you also can install two 220uf in series (but back to back in polarity, plus connected to plus) and them solder this guy into your woofer terminals.... use 22uf (bipolar) or two 47uf back to back in series with the red wire (live wire of audio) and them you gonna block bass and midranges and then send mids and treble to this tiny monitor speaker you used in your recording...it seems it is able to reproduces nice treble and maybe a good midrange too...install the woofer in an enclosure because it is having front to back phase cancellation.... this kills bass.

220uf condensers in series, even back to back, will result in 110uf...this will "eat" some remaining treble and upper midrange frequencies the coil could not block (filter).

22uf will let mids and treble to cross..the tweeter, inside your speaker enclosure, already have it's 2.2uf or 4.7uf capacitor...so, you need only to install the 22uf...if you feel needed, then use 8 ohms (or something alike) in series with your mid/high drivers...to make the bass comes true.

This is the way i use at my home and works fine.... this is standard, traditional, and this way is used for more than 80 years..since the radio age.

thank you very much...make more.... much more...yesssssss!

regards,

Carlos

Last edited by destroyer X; 16th November 2011 at 04:33 PM.
 
Old 16th November 2011, 07:38 PM   #440
vargasmongo3435 is offline vargasmongo3435  Puerto Rico
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Thumbs up muito obrigado destroyer x!

Of course my friend! I made a video with low frequencies test and but before that I was playing music for about 3 hours! many types of music, rap classic, electronic music, bass , rock etc... seems to me that this baby can handle anything you put on, and the woofer you see in the video I bought it like 8 years ago and is the first time that the voice coil warm up! no bulsh#$%t the woofer is rated 1.5KW 8ohms! the supply voltage when up and it helps a lot more bass output than yesterday and that coil is 4" in diameter so I imaging this with the right set the filters that you mention well set up, oh my lord!!! to much emotions my brother!!! ok I got to find some caps and 1mm wire to do that is just awesome man thanks for the tip.... hell yeah! muito obrigado....


regards
vargasmongo3435
 

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