Topic: Speaker DIY'ers

[alexg]

I cant see the pix, its typically firewall blocked on our setup. Is this the same reference full range project variation by dave (planet10) of diyaudio? I am considering the monopole because of footprint.

No, it is the design by Gio G (gg of diyaudio), the one designed by dave is ported bipole.

The bipole will have the same footprint as the monopole, I did the bipole since it eliminates the need for a power grabbing BSC (baffle step compensation) circuit. Also, my new modded t-amps is designed for bi-amping.

The sealed bipole also have the advantage of improving the soundstage a lot for a small penalty on the separation, which is ok with the kind of music I play. I wanted to do the sealed enclosure since this would improve the midrange and the bass will be tighter. These drivers does not go well below 80Hz anyway, even on a ported enclosure, so I still need a subwoofer, so basically in my opinion, porting the enclosure does not offer any advantage.

[bumblebee]

Parang hindi.

[juneaki]

I have a pair of Wharfedale Valdus 100 which is very old already and i'm using this with a T-amp. It is a bookshelf type speaker. Yung plastic laminate nya ay natatanggal na at yung mdf box ay malutong na. But the drivers are still ok. May konti akong alam sa carpentry at gusto kong gumawa na bagong speaker box para dito. Gusto ko yung parang tower enclosure na payat pero sealed. BTW ang sukat ng mga drivers ay 3/4" ang tweeters at 5" ang mid/woofers. Meron ba kayong maire-recommend na design at ano ang magandang materiales na gamitin? TIA.

[alexg]

Parang hindi.

The internal dimensions are exactly the same, same driver placement, same driver, except the construction sequence is different. On Gio's construction, he started with the speaker sides and he glued the rear baffle last. On my construction, I glued the front and rear baffle first and the sides last (this has something to do with the finish I wanted). So basically, it is the same design.

[alexg]

I have a pair of Wharfedale Valdus 100 which is very old already and i'm using this with a T-amp. It is a bookshelf type speaker. Yung plastic laminate nya ay natatanggal na at yung mdf box ay malutong na. But the drivers are still ok. May konti akong alam sa carpentry at gusto kong gumawa na bagong speaker box para dito. Gusto ko yung parang tower enclosure na payat pero sealed. BTW ang sukat ng mga drivers ay 3/4" ang tweeters at 5" ang mid/woofers. Meron ba kayong maire-recommend na design at ano ang magandang materiales na gamitin? TIA.

What you can do is measure the internal volume of your current speaker cabinet, then try to design a tower cabinet with the same internal volume so the sound will not be much affected.

If you the T/S parameters of the drivers then you can download WinISD to compute for the speaker dimension.

The best material to use is MDF, apparently, it reduces resonance inside the box.

I will try to get the T/S parameter for your drivers, if I find it, I will give you WinISD's dimensions you can use.

[bumblebee]

The internal dimensions are exactly the same, same driver placement, same driver, except the construction sequence is different. On Gio's construction, he started with the speaker sides and he glued the rear baffle last. On my construction, I glued the front and rear baffle first and the sides last (this has something to do with the finish I wanted). So basically, it is the same design.

Hi alexg. My reply was for aHobbit I thought his post was the last so I didn't quote. Sorry for the confusion.

[juneaki]

What you can do is measure the internal volume of your current speaker cabinet, then try to design a tower cabinet with the same internal volume so the sound will not be much affected.

If you the T/S parameters of the drivers then you can download WinISD to compute for the speaker dimension.

The best material to use is MDF, apparently, it reduces resonance inside the box.

I will try to get the T/S parameter for your drivers, if I find it, I will give you WinISD's dimensions you can use.

Wow Thanks dude, will appreciate it very much

[alexg]

Hi alexg. My reply was for aHobbit I thought his post was the last so I didn't quote. Sorry for the confusion.

Oooops, I thought it was for me.... 

[alexg]

Wow Thanks dude, will appreciate it very much

Can you take pictures of your Valdus and measure the dimensions? Apparently, Wharfedale produced several versions of this model. 

[juneaki]

Can you take pictures of your Valdus and measure the dimensions? Apparently, Wharfedale produced several versions of this model. 

Ok, will pm you pics of valdus 100 and the dimension as well. Thanks.

[timn8ter]

Hi Alex!
Does this mean Ted was able to get the drivers for you? I haven't spoken to him lately. Your project looks excellent so far!

[alexg]

Hi Tim,

I was able to reserve 4 Fostex drivers from Ted. I believe our purchasing department already made arrangement for payment and pickup.

Thanks.

Alex

[alexg]

I just started building a pair of small tower sealed bipole using the 4" Fostex FE127E.

The design was based on this: http://ca.geocities.com/gmilitano/Speakers/FE127E_SB/FE127E_SB.htm

The baffles would be 3/4" MDF that will be painted black, the sides of the speakers would be solid narra.

Here are narra slabs being planed (left over from our kitchen cabinets):



Here are the MDF baffles:



Here are the baffles glued and screwed to the braces:



The four Fostex FE127E will arrive on Thursday, I will post more pictures.

These speakers will be driven by two modified t-amps (bi-amped) and a tube pre-amp, creations of Master JojoD.

Finally got my Fostex drivers today:





My dog trying to help so we can finish early, she would love to listen to Diana Krall and Lee Retinour on the new fostex speakers!



Fitted the speakers on the cabinets:




This afternoon, I connected the unfinished speakers (without the damping materials) to my two sonic impact t-amps. The sound is a bit brilliant and forward. Fostex users have said that I need to break-in the drivers for at least 100 hours. Compared to my AR Status 40, these DIY fostex without the break-in already sound better. Bass is tighter, but of course, it need a subwoofer for frequency lower than 80Hz.

Vocals is to die for.

[obey]

Check out the DIY projects on this site especially the ones made by Ryan T

 http://www.ocforums.com/showthread.php?t=319931

[timn8ter]

alexg
Congrats on your project!
It does my heart good to see that.

[aHobbit]

...
This afternoon, I connected the unfinished speakers (without the damping materials) to my two sonic impact t-amps. The sound is a bit brilliant and forward. Fostex users have said that I need to break-in the drivers for at least 100 hours. Compared to my AR Status 40, these DIY fostex without the break-in already sound better. Bass is tighter, but of course, it need a subwoofer for frequency lower than 80Hz.

Vocals is to die for.

    

[rmpmla]

Fitted the speakers on the cabinets:




This afternoon, I connected the unfinished speakers (without the damping materials) to my two sonic impact t-amps. The sound is a bit brilliant and forward. Fostex users have said that I need to break-in the drivers for at least 100 hours. Compared to my AR Status 40, these DIY fostex without the break-in already sound better. Bass is tighter, but of course, it need a subwoofer for frequency lower than 80Hz.

Vocals is to die for.

ngayon ko lang uli nabuksan tong thread na ito.

alexq, congrats
ganda naman 

[sammie]

DIY Subwoofer...

I'm new here.
I'm in the process of building up my 2nd sub. May driver na ako (kaya lang lumang model ito, which i got it cheap).  My problem is, gusto ko sana gawin active sub, but i don't know kung saan makakabili ng amp and other electronics na kailagan niya. 

I've read somewhere, na sa raon may nabibili ready assembled amp with low filter (no sure). Available pa kaya ito?

Pwede kaya gamitin ang amp ng pang kotse? Pero, ang sabi pag ito ginamit ko malakas ang consumption ng electricty (lagot sa electric bill for sure).

Can anyone help? Thanks...

 




 














 

[/quote]

[rustyns]

Ahh those lovely Tee nuts... when I hear those I remember this beautiful chinese lady at T. Mapua St. where I bought my Tee nuts.... 

On a technical note, woofers and subs installation benefit a lot using Tee nuts rather than just using machine/wood screws. The price is less than P5 per set (bolt & Tee nut).

Sir Jojo,

Saan itong T. Mapua st.? Meron ba sa raon nitong tee nuts?

Tnx

[Jagner]

Sir Jojo,

Saan itong T. Mapua st.? Meron ba sa raon nitong tee nuts?

Tnx

Tee nuts are available in stores that sell screws, nuts and bolts.  You can check Tu Suy Hardware or Screwmaster hardware, w/c I think are also along that street. It's just a short walk from the LRT station, along Recto.  There are also branches of Screwmaster in Pasay (along EDSA, near the MRT Taft station) Cubao and San Juan.

Hope this helps.   

[rustyns]

Tee nuts are available in stores that sell screws, nuts and bolts.  You can check Tu Suy Hardware or Screwmaster hardware, w/c I think are also along that street. It's just a short walk from the LRT station, along Recto.  There are also branches of Screwmaster in Pasay (along EDSA, near the MRT Taft station) Cubao and San Juan.

Hope this helps.   

tnx sir jagner

[bodin]

What you can do is measure the internal volume of your current speaker cabinet, then try to design a tower cabinet with the same internal volume so the sound will not be much affected.

If you the T/S parameters of the drivers then you can download WinISD to compute for the speaker dimension.

The best material to use is MDF, apparently, it reduces resonance inside the box.

I will try to get the T/S parameter for your drivers, if I find it, I will give you WinISD's dimensions you can use.

mayron bang available subwoofer driver dito na may T/S parameters(Fs Vas and Qts)? Gusto ko sanang gumawa ng subwoofer for home theater. I have an old power amp to power it, to be connected to my receiver's sub-out. Preferably 6 or 8 ohms. Or yung dual voice coil para magagamit ko yung dalawang channel ng amp. Pero okey na rin kung single coil basta 6 or 8 ohms lang.
salamat po.

[vapo_chill]

Guys, meron ba dito who offers baffle fabrication? i have an old pair of cb-80s from Dai-ichi, 3 way sia, 8" woofer, 5" midrange and 1" metal dome tweeter.
what i want is palitan yung baffle nia. currently its stands around 2.5 ft, natatakpan na sia ng  bed. i have a small room, gusto taasan yung baffles to around 4ft. bahala na kung pwede sia lagyan ng passive radiator cone or just back ported. i want to do it sana myself pero la ako talaga time.

Anyone offering such service?

[vapo_chill]

Guys, meron ba dito who offers baffle fabrication? i have an old pair of cb-80s from Dai-ichi, 3 way sia, 8" woofer, 5" midrange and 1" metal dome tweeter.
what i want is palitan yung baffle nia. currently its stands around 2.5 ft, natatakpan na sia ng  bed. i have a small room, gusto taasan yung baffles to around 4ft. bahala na kung pwede sia lagyan ng passive radiator cone or just back ported. i want to do it sana myself pero la ako talaga time.

Anyone offering such service?

[diy_master]

try ninyo sir, #838 6701/0921 4697091 for speaker and sub. design. (A-Audio Custom Speaker)

[Bemo]

Call diy_master (look for Anthony 8386701) or his cell 0921-4697091.
He is very good in this.
Please tell him you were referred by me.

Regards,
Bemo

[NMM1]

from the looks of his work posted online plus the testimonies from lots of members, i would say he's the best.... sir anthony discount ha, hahahaha...

[diy_master]

Sure discount,lemontwyst. any item and order hehe!

[flashDB]

Gusto ko sana magtry ng DIY speaker front left/right.
anung magandang platform/brand to start with?

[Eggballs]

Challenging inquiry.

To start with, I suggest you state your sound preference, your music, indoor or outdoor use and if indoor, size ng listening area mo... though still so many factors yet to consider.