Author Topic: Speaker DIY'ers (Read 309561 times)

remington · « **Reply #600 on:** Jul 24, 2013 at 10:00 AM »

my diy audio nirvana speakers

dotnet · « **Reply #601 on:** Aug 18, 2013 at 03:12 PM »

Sirs/Madams, can you please point me to where i can get a cheap LCR meter? or Inductance meter for measuring my DIY air core inductors? Thanks.

ndotcom · « **Reply #602 on:** Aug 20, 2013 at 07:47 AM »

Quote from: dotnet on Aug 18, 2013 at 03:12 PM

Sirs/Madams, can you please point me to where i can get a cheap LCR meter? or Inductance meter for measuring my DIY air core inductors? Thanks.

Bro check this out and pm mo si sir Tony, or better ay visit elabs http://www.elab.ph/forum/index.php may gumawa nyan dun..

http://www.pinoydvd.com/index.php/topic,160788.270.html

dotnet · « **Reply #603 on:** Aug 20, 2013 at 05:00 PM »

Ndotcom, thanks for the reply, I recently inquired from Deeco but no stock available (they're still awaiting shipment from abroad the W-725 LCR @ P2,000). I saw sir tony's link you sent, and saw that he is using an assembled inductance tester made by a certain DIY'er, RBT. I wonder how much that thing costs? Thanks and keep safe.

dotnet · « **Reply #604 on:** Aug 21, 2013 at 11:59 AM »

Guys, I just want to know what kind of crossover simulator are you using to make crossovers for your diy projects? I want to make my own two way, but having quite a hard time what values to put into the crossovers. Thanks.

edrel sison · « **Reply #605 on:** Aug 21, 2013 at 12:03 PM »

i have some used LCR meter of below model:
http://www.amplifier.cd/Test_Equipment/other/LCR-815B.html

pm me if interested. not as good looking like the photo but gets the job done.

edrel sison · « **Reply #606 on:** Aug 21, 2013 at 12:07 PM »

Quote from: dotnet on Aug 21, 2013 at 11:59 AM

Guys, I just want to know what kind of crossover simulator are you using to make crossovers for your diy projects? I want to make my own two way, but having quite a hard time what values to put into the crossovers. Thanks.

http://www.v-cap.com/speaker-crossover-calculator.php

audiojunkie · « **Reply #607 on:** Aug 21, 2013 at 11:25 PM »

http://www.diyaudioandvideo.com/Calculator/APCXOver/

juneaki · « **Reply #608 on:** Sep 08, 2013 at 07:18 PM »

Guys, i recently got a hold on a pair of Bozak 12" fullrange speakers (model B-199A). I tested them with my Yaqin MC10 and even without a box, they already sing a good tune (IMHO). How much more kaya kung naka-box na!

Here are actual pics of the drivers:

Now my problem is the design of the box to be use on these oldies. Or just install it in an open box then hook it in parallel sa beyma viech ko para maging 4 ohms. Pwede kaya? Any other suggestions? or link na alam nyo, TIA mga sirs.

juneaki · « **Reply #609 on:** Sep 10, 2013 at 07:50 AM »

Mga guys baka meron kayo suggestions?

edrel sison · « **Reply #610 on:** Sep 10, 2013 at 07:56 AM »

Quote from: parasound on Jan 08, 2013 at 10:08 PM

Pasali po mga Sir.. share ko lang itong ongoing project ko.

Baffle Design: Pioneer PAX A30

Philips AD12202 / M8 & JBL 2405

JBL 2405

Philips AD12202 / M8

Philips AD5200 & AD12202 / M8

Quote from: parasound on Jan 08, 2013 at 10:08 PM

Update photo of my project..

dana · « **Reply #611 on:** Sep 10, 2013 at 09:50 AM »

edrel, yan ang bookshelf speakers, in its truest sense

ang tunay na lalaki, ganyan kalaki ang speakers

napakinggan ko ung youtube posting ni parasound nyan, ang ganda !
mahanap nga ulet.

markcrenz · « **Reply #612 on:** Sep 10, 2013 at 10:12 AM »

Quote from: juneaki on Sep 10, 2013 at 07:50 AM

Mga guys baka meron kayo suggestions?

try mo muna sa open baffle at least 2 ft wide. kung wala kang t/s parameters you can safely use a 2 cu ft sealed box.

Gino · « **Reply #613 on:** Sep 10, 2013 at 10:20 AM »

A speaker project depends on your gears and expectations. Example I have 3.5w tube amp. Speaker efficiency is important in my case. Most designs ideal for my amp are like parasound's speakers above. Too big and expensive for me. I ended up with a 94db 6.5", supertweeters, and an 8" sub.

juneaki · « **Reply #614 on:** Sep 10, 2013 at 12:10 PM »

Quote from: markcrenz on Sep 10, 2013 at 10:12 AM

try mo muna sa open baffle at least 2 ft wide. kung wala kang t/s parameters you can safely use a 2 cu ft sealed box.

Balak ko talaga open box muna while looking for proper box design. Pwede ko ba i-hook in parallel sa 8 ohms beyma speaker ko itong bozak na 8 ohms din? in effect magiging 4 ohms na sya kaya dapat i-set ko sa 4 ohms yung output ng tube amp ko, right?

ATJr. · « **Reply #615 on:** Sep 10, 2013 at 12:13 PM »

ingat lang baka mag-away yung two speakers mo na nakaparallel...kung ako, pili kung alin...

juneaki · « **Reply #616 on:** Sep 10, 2013 at 12:35 PM »

Quote from: ATJr. on Sep 10, 2013 at 12:13 PM

ingat lang baka mag-away yung two speakers mo na nakaparallel...kung ako, pili kung alin...

or speaker switcher na lang para may choice, di ba sir? kung samahan ko ng tweeter yung Bozak, kailangan ba ng crossover network o pwede na capacitor na lang sa tweeter tapos hook it parallel sa Bozak? sorry po newbie sa electronics eh.

ATJr. · « **Reply #617 on:** Sep 10, 2013 at 12:37 PM »

yes, or at least 2.7ufd na capacitor sa tweeter..

Gino · « **Reply #618 on:** Sep 10, 2013 at 01:10 PM »

http://audiokarma.org/forums/showthread.php?t=193092

Bozak B-3001. Very similar to your drivers.

markcrenz · « **Reply #619 on:** Sep 10, 2013 at 08:17 PM »

Quote from: juneaki on Sep 10, 2013 at 12:10 PM

Balak ko talaga open box muna while looking for proper box design. Pwede ko ba i-hook in parallel sa 8 ohms beyma speaker ko itong bozak na 8 ohms din? in effect magiging 4 ohms na sya kaya dapat i-set ko sa 4 ohms yung output ng tube amp ko, right?

electrically it would be fine basta kaya ng amp ang 4 ohms BUT lulutang syempre ang tunog ng more sensitive speakers.

ATJr. · « **Reply #620 on:** Sep 10, 2013 at 08:41 PM »

that is what i meant when i said mag-aaway yung two speakers....

Gino · « **Reply #621 on:** Sep 10, 2013 at 08:43 PM »

There will also be phase differences overlap regions. This will cause dip on your high freq curve. An L-pad is a way to fine tune your levels. My super tweeters use an L-pad and adjustable xover points of first order 15,17, and 20 khz. My speakers blended well at 17khz.

juneaki · « **Reply #622 on:** Sep 11, 2013 at 03:42 PM »

Quote from: markcrenz on Sep 10, 2013 at 08:17 PM

electrically it would be fine basta kaya ng amp ang 4 ohms BUT lulutang syempre ang tunog ng more sensitive speakers.

Quote from: ATJr. on Sep 10, 2013 at 08:41 PM

that is what i meant when i said mag-aaway yung two speakers....

Ang beyma ang may mas mataas na sensitivity (96db). Excellent sya sa mids at very good and highs with good enough lows. Yung bozak naman ay mataas din ang sensitivity at mas malalim at malambing ang bass at very good din sa vocals but the highs are wanting. I think in parallel, they will enhance the sound of each other. If put in a box, i believe mas malalim pa ang bass ng bozak.

But I am more inclined now to make a separate pair of speakers out of Bozak and find a suitable set of tweeters to enhance high freqs. I was encouraged by this article:
http://www.6moons.com/audioreviews/diy_ob/gerry.html

juneaki · « **Reply #623 on:** Sep 21, 2013 at 11:22 PM »

I decided to try open baffles. Paired the Bozaks with Klipsch tweeters.

The duo (Bozak and Klipsch) sings in harmony now giving great sound. Guitars sound like guitar, piano sounds like piano. The midrange are excellent, the singer is like in front of you (you can hear breathing). And the highs given off by the Klipsch are outstanding. At first i thought that bass is wanting. I tried different positions and when i found the right one, low freqs are now very good. Between the Beyma biech and these Bozaks, i'm favoring the speakers in open baffles. Great detailed true to life sound. I thought the Beymas have the higher sensitivity but it seems that the Bozaks are louder using the same volume level (9 oclock) of Yaqin MC10t.

ndotcom · « **Reply #624 on:** Sep 22, 2013 at 10:10 AM »

Nice one Bro Jun, ganda ng malamang tunog nyan kakatulo laway sa description mo palang. Congrats and keep them coming...

dotnet · « **Reply #625 on:** Sep 23, 2013 at 02:28 PM »

Sir Jun, may i ask how you were able to arrive with what crossover to use? your method in choosing a crossover for? nice design, by the way sir!

Gino · « **Reply #626 on:** Sep 23, 2013 at 03:46 PM »

Pics ng complete setup pls.

juneaki · « **Reply #627 on:** Sep 26, 2013 at 11:22 PM »

Quote from: Gino on Sep 23, 2013 at 03:46 PM

Pics ng complete setup pls.

As requested:

Gino · « **Reply #628 on:** Sep 27, 2013 at 08:20 AM »

You must be getting a wide stage with the speakers way out like that. Nice. If i can shove speakers way out like that it will be great. I am just wondering if big speakers have this advantage.

juneaki · « **Reply #629 on:** Oct 28, 2013 at 07:22 AM »

Quote from: juneaki on Sep 21, 2013 at 11:22 PM

I recently acquired a second pair of Bozak B199-A (from BLUED_2007). I'm thinking of making an infinite box (closed) for the speaker above and also put the newly acquired ones in the said box in parallel with the first.

I'm also thinking of having the same parallel configuration but in the same open baffle with a base this time. I'll put the second B199-A at the base facing down and elevate the baffles using 3" foot/stand. (i prefer this than the close box). I hope the second driver will further enhance the already good bass of these speakers. What do you think guys?

Sir Raffy (BLUED_2007) can attest how really good musically all round the Bozaks. Kahit sya nagulat sa kanyang narinig when we tested the speakers in his shop.