Topic: Speaker DIY'ers

[redstarrising]

Yes Sir Jun, Promise ko kay Hepe yan, wala ng kasunod na project. mabuti na lang nasanay ako sa mga past track project natin dati. Kaya lahat ng project ko puro mabilisan. Tingin ka palagi dun sa forum nila then pag meron ka nakita at decided ka na, reserve agad natin. mabilis bentaha dun, maraming piranha.

@ Sir Jun meron available - JBL S 101
http://vnav.vn/forum/viewtopic.php?f=35&t=5946&p=2413123&hilit=Jbl+101#p2413123



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Ayyy!!! iba pala yan Jap version na "S" yoko nyan hehe. Yun DORIAN L-101 Lancer sana kung meron masilip ka.

[parasound]

500hz 2nd Order Butterworth - By Transformer & Coil Master - Pareng Edrel Sison








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[parasound]

Back to the future


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[tony]

500hz 2nd Order Butterworth - By Transformer & Coil Master - Pareng Edrel Sison








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well done, can you pm me cost to make that box? thanks..

[dana]

wow ronald, ayawan na!

my friend saw that cabinet while in progress...

[parasound]

Thanks Sir Tony, i PM ko po sa inyo, @ Dana so alam mo na kung saan ginagawa mga book shelf speaker ko? Ok siya gumawa, it was been implemented properly based on the design. Punta ka sa bahay ngayon para marinig mo, back to work na ako ulit bukas.


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[parasound]

More picture



















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[redstarrising]

ronald, aalis ka na agad di ko pa naririnig  , ako paparating pa lang  , congrats!!! bro. 

[parasound]

Ganyan talaga sir, back to work na ulit. Enjoy your vacation sir with your toys hehehe

ronald, aalis ka na agad di ko pa naririnig  , ako paparating pa lang  , congrats!!! bro. 

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[tony]

#parasound, have a safe trip, kailan ang balik mp dito? thanks for the heads up...

[parasound]

Thanks Sir Tony, baka December na po..

#parasound, have a safe trip, kailan ang balik mp dito? thanks for the heads up...

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[rulesmeister]

Guys, buhayan ko lang thread na 'to..

A friend of mine just left to work abroad, he sold me his Crown floorstanders at Php 800 para lang mai-dispose ung unit (since kaibigan, I obliged to accept his sell offer).

I already have floorstanders for my HT, but I planned to use this crown fs for a bedroom set up (purely music). As expected the drivers & tweeters were cheap and the sound is not good for my taste. But the floorstanders itself did looked good & SQ could be improved

I planned to replace drivers, tweeters, wires & x'overs, purchase at partsexpress HiVi Svans woofers & Dayton Audio air motion tweeters of the same size as of the current drivers.

Question:
Any other suggestions? may other route ba nito that would improve SQ? & drivers that are locally available?

Medyo matagal pa kasi if sa partsexpress pa bibilhin ung drivers/tweeters
 

[Nelson de Leon]

Guys, buhayan ko lang thread na 'to..

A friend of mine just left to work abroad, he sold me his Crown floorstanders at Php 800 para lang mai-dispose ung unit (since kaibigan, I obliged to accept his sell offer).

I already have floorstanders for my HT, but I planned to use this crown fs for a bedroom set up (purely music). As expected the drivers & tweeters were cheap and the sound is not good for my taste. But the floorstanders itself did looked good & SQ could be improved

I planned to replace drivers, tweeters, wires & x'overs, purchase at partsexpress HiVi Svans woofers & Dayton Audio air motion tweeters of the same size as of the current drivers.

Question:
Any other suggestions? may other route ba nito that would improve SQ? & drivers that are locally available?

Medyo matagal pa kasi if sa partsexpress pa bibilhin ung drivers/tweeters
 

Im good and okay with DIY however sa move na gagawin niyo, hindi kaya mascheaper if you buy a new pair of speakers? Parang enclosure na lang ang tinira niyo. Hehe!

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[markcrenz]

Build from scratch na lang, baka cheap din enclosure materials sayang lang ang HQ drivers. Benta mo na lang sa akin yan as is, kaibigan!

[rulesmeister]

^Sturdy naman ung enclosure, tapos mdf material. Hindi ko lang nacheck kung anong thickness..

[ndotcom]

Just go ahead sir, maganda rin yan naisip mo. As per experience kasi pinakamatagal gawin yang enclosure plus mahirap mag source ng material especially MDF, wala sa tabi tabi construction supply yan. DIY is sariling diskarte kaya nga "yourself" dulo eh sa bandang huli ikaw din magsisi. Patience is the key lang, wag mainip sa mga materyales at pag buo ng project.

[tony]

enjoy it muna....just because it is a no name brand does not mean you can not enjoy it...

the first thing i will do is check the tweeters if they are not burned out yet..
then perhaps upgrade the dividing network to better caps, all electros needs to go... and chokes/coils made air core and thicker gauge...Edrel is your man for that...

[rulesmeister]

Just go ahead sir, maganda rin yan naisip mo. As per experience kasi pinakamatagal gawin yang enclosure plus mahirap mag source ng material especially MDF, wala sa tabi tabi construction supply yan. DIY is sariling diskarte kaya nga "yourself" dulo eh sa bandang huli ikaw din magsisi. Patience is the key lang, wag mainip sa mga materyales at pag buo ng project.

Agree. I have nothing to lose and everything to gain (maliban nalang if I get lemon items from partsexpress, wag naman sana!). Ung kasama ko sa work advised me to do DIY from scratch, ehh Im not good with woodworking hehehe. I could create a box but it wouldnt look good and it may not be sturdy enough..

@Sir Tony,
Noted! Un din inisip ko to change x'over 1st since available locally mga parts.. Many thanks
 

[tony]

if you can post pictures we can be more specific with suggestions..

[parasound]

Agree with Sir Tony’s suggestion, try mo muna upgrade ang dividing network..


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[markcrenz]

For crossover most likely ele caps lang and leaky na. Change to polypropylene.

Yung coils pwedeng di na upgrade if you will soon replace the drivers. The new drivers will surely have different parameters and will require an entirely different crossover.

Rod Elliott has a good article on passive crossover design. Google mo na lang.

Lastly DIBS ako sa old drivers.😂

[tony]

for crossover caps, film and foils are best, you will know them by their bulk, bigger in size than a metalized film of the same capacity..

[rulesmeister]

Btw Crown BF-646 ung model, my friend told me he bought it at around P5000 mid last year. I removed 1 driver and the mdf thickness is around 1/2", I think this is sturdy enough for 2 swans HiVi drivers. I don't need to drive the speakers at very high SPL since it will be used on a medium-sized bedroom.

Already added to my cart (partsexpress) 4 HiVi drivers & 2 tweeters. My boss will be going to the US next week, I'll ask him 1st if he could carry these for me.  Medyo marami issues sa work kaya hindi ko muna cya kinausap baka tanggihan hehehe. Bukas baka maganda mood, tsaka ko na kausapin.

Anyway, plan B is to ship via LBC my shopping cart.

[rochie]

Btw Crown BF-646 ung model, my friend told me he bought it at around P5000 mid last year. I removed 1 driver and the mdf thickness is around 1/2", I think this is sturdy enough for 2 swans HiVi drivers. I don't need to drive the speakers at very high SPL since it will be used on a medium-sized bedroom.

Already added to my cart (partsexpress) 4 HiVi drivers & 2 tweeters. My boss will be going to the US next week, I'll ask him 1st if he could carry these for me.  Medyo marami issues sa work kaya hindi ko muna cya kinausap baka tanggihan hehehe. Bukas baka maganda mood, tsaka ko na kausapin.

Anyway, plan B is to ship via LBC my shopping cart.

plan B is good too,kaya lang matagal lang sea-freight mga 1 month,kung via air naman baka mahal dahil mabigat drivers

[markcrenz]

1/2" is a bit thin for a tower. Even at low power outputs, the panels could resonate. It could benefit from bracing (if none) and damping.

[juneaki]

Newbie question lang po mga gurus, is it possible to hook two bass drivers in the LF speaker output terminal of a three way dividing network? What is the best way to connect the two bass drivers, parallel or series? How will this affect the impedance of the speaker?

[tony]

depends on how much your power amp is capable,
if powerful enough and if your power amp is rated for 4 ohms, then parallel,
if you power amp is not rated for 4 ohms, then series..

[markcrenz]

ilan ohms?

[juneaki]

depends on how much your power amp is capable,
if powerful enough and if your power amp is rated for 4 ohms, then parallel,
if you power amp is not rated for 4 ohms, then series..

ilan ohms?

I'm using a Yaqin MC10T tube amp, it has speaker options for both 4ohms and 8 ohms. I'm talking about a three way bozak N10102A three way crossover network. I already hooked two Bozak 12" B199A rated 8ohms in parallel to the LF terminal and the result made me smile. My midrange drivers are also Bozak and Klipsck horn tweeters for highs. Meron lang akong concern, i assumed that the terminal numbered 1 is the positive and the #2 terminal is the negative. So i hooked it to the amp as such. Just today, i discovered that it is the reverse, meaning #1 is the negative and #2 is the positive. Okay lang ba na reverse ang polarity? (But i'll re-check kasi mejo malabo na yung mga markings kasi more than 50 years na mga speakers.)

[tony]

you can use a 1.5 volt dry cell to check phase, either both na papasok ang cone or parehong palabas, kung mabaligtad mo hihina ang bass..