Author Topic: MarkAudio Extended Full Range drivers - Post your build here (Read 285601 times)

JojoD818 · « **Reply #960 on:** Apr 14, 2015 at 10:43 AM »

Quote from: timber715 on Apr 14, 2015 at 01:01 AM

Joey, the plywood source said they have no plans at this time to import 3/4" plywood. Consider using what is available which is 1" thick.... Super solid and super heavy as well.
Doesn't really look bulky naman.... Eto sample cabinet for the boss, lalagyan ng server ng opis nila.

Imho, napaganda pa nga na walang 3/4" and 1" lang ang available. Blessing in disguise na yan, I vote for 1".

RXV · « **Reply #961 on:** Apr 14, 2015 at 10:47 AM »

Quote from: JojoD818 on Apr 14, 2015 at 10:43 AM

Imho, napaganda pa nga na walang 3/4" and 1" lang ang available. Blessing in disguise na yan, I vote for 1".

1" is the sweetspot!

RXV · « **Reply #962 on:** Apr 14, 2015 at 10:48 AM »

Quote from: JojoD818 on Apr 14, 2015 at 10:40 AM

Kita mo naman brader, nagtanong lang naman ako baka sakali meron kasamang box - akalain mo meron nga!

The luck is having friends like you guys. Makukulit at masaya.

Wala bang willing magbigay ng FREE M.A. drivers diyan?
(Nagbabasakali lang baka may biglang maging generous hahaha)

Nelson de Leon · « **Reply #963 on:** Apr 14, 2015 at 11:26 AM »

MDF pwede din tukayo.

JoeyGS · « **Reply #964 on:** Apr 14, 2015 at 11:28 AM »

The MA community have tried and tested several types of wood and Birch ply provided the best results.

Quote from: Nelson de Leon on Apr 14, 2015 at 11:26 AM

MDF pwede din tukayo.

deist · « **Reply #965 on:** Apr 14, 2015 at 01:24 PM »

MDF is a good material, some say that it is more "dead" than any plywood but the problem is most MDF uses formaldehyde as a binding agent. Working with it, inhaling the dust and fumes is more hazardous than solid wood or ply.

Quote from: Nelson de Leon on Apr 14, 2015 at 11:26 AM

MDF pwede din tukayo.

deist · « **Reply #966 on:** Apr 14, 2015 at 01:31 PM »

Hintay hintay lang tayo baka meron din mag-offer

Quote from: RXV on Apr 14, 2015 at 10:48 AM

Wala bang willing magbigay ng FREE M.A. drivers diyan?
(Nagbabasakali lang baka may biglang maging generous hahaha)

JojoD818 · « **Reply #967 on:** Apr 14, 2015 at 05:06 PM »

Quote from: RXV on Apr 14, 2015 at 10:48 AM

Wala bang willing magbigay ng FREE M.A. drivers diyan?
(Nagbabasakali lang baka may biglang maging generous hahaha)

Hahaha pwede pwede... thinking out loud lang naman...

Quote from: deist on Apr 14, 2015 at 01:24 PM

MDF is a good material, some say that it is more "dead" than any plywood but the problem is most MDF uses formaldehyde as a binding agent. Working with it, inhaling the dust and fumes is more hazardous than solid wood or ply.

I know it's "denser" than any plywood but I didn't knew that it's a hazmat pala.

RXV · « **Reply #968 on:** Apr 15, 2015 at 08:55 AM »

Quote from: JoeyGS on Apr 14, 2015 at 11:28 AM

The MA community have tried and tested several types of wood and Birch ply provided the best results.

Birch plywood is best, per hirap kasi i-source e pati wala yatang 4'x8' size. For my enclosure, I used Sta. Clara marine plywood, which is being used for boats. It's so heavy/dense, I swear kasing bigat (if not, even heavier) than 4'x8' MDF. Di ako nagsisisi sa choice ko.

JoeyGS · « **Reply #969 on:** Apr 15, 2015 at 10:13 AM »

At least there is an alternative choice and good that you are happy with the results.

Quote from: RXV on Apr 15, 2015 at 08:55 AM

Birch plywood is best, per hirap kasi i-source e pati wala yatang 4'x8' size. For my enclosure, I used Sta. Clara marine plywood, which is being used for boats. It's so heavy/dense, I swear kasing bigat (if not, even heavier) than 4'x8' MDF. Di ako nagsisisi sa choice ko.

deist · « **Reply #970 on:** Apr 15, 2015 at 11:36 AM »

Hi RXV, that's a good alternative. I've heard of Santa Clara ply, madalas i-recommend ng mga boat makers yan. Sa mga putol mo wala ka bang nakitang voids between plies?

Where did you buy yours & how much? TIA

Quote from: RXV on Apr 15, 2015 at 08:55 AM

Birch plywood is best, per hirap kasi i-source e pati wala yatang 4'x8' size. For my enclosure, I used Sta. Clara marine plywood, which is being used for boats. It's so heavy/dense, I swear kasing bigat (if not, even heavier) than 4'x8' MDF. Di ako nagsisisi sa choice ko.

fredreadrick · « **Reply #971 on:** Apr 15, 2015 at 12:06 PM »

Used film faced plywood on my last build.
Even ang surface, very stiff, 13 ply , dense -no void, 18mm thk

deist · « **Reply #972 on:** Apr 15, 2015 at 12:34 PM »

^ That's nice, para ngang void free...Parehong sides ba film faced? I think it's called "phenolic plywood" here in PH.

Quote from: fredreadrick on Apr 15, 2015 at 12:06 PM

Used film faced plywood on my last build.
Even ang surface, very stiff, 13 ply , dense -no void, 18mm thk

fredreadrick · « **Reply #973 on:** Apr 15, 2015 at 12:38 PM »

sir deist, yes phenolic board, parehong sides.

edrel sison · « **Reply #974 on:** Apr 15, 2015 at 01:02 PM »

Quote from: fredreadrick on Apr 15, 2015 at 12:06 PM

Used film faced plywood on my last build.
Even ang surface, very stiff, 13 ply , dense -no void, 18mm thk

pare how much yung ganitong board and where can one get it? thanks.

fredreadrick · « **Reply #975 on:** Apr 15, 2015 at 01:09 PM »

sir, marami naka-advertise sa OLX.ph....phenolic plywood / board
available din sa mga suking hardwares & lumber construction supplies
nasa P1200 - 1500 per 4'x8' sheet.

RXV · « **Reply #976 on:** Apr 15, 2015 at 01:34 PM »

Quote from: deist on Apr 15, 2015 at 11:36 AM

Hi RXV, that's a good alternative. I've heard of Santa Clara ply, madalas i-recommend ng mga boat makers yan. Sa mga putol mo wala ka bang nakitang voids between plies?

Where did you buy yours & how much? TIA

Sta. Calara Plywood has a list of cerified sellers around Metro Manila. I had to get mine at Balintawak area pa. As far as I remember, Sta. Clara plywood is double the cost of regular plywood.

Yes, may voids pa rin, pero minimal lang, siguro 2-3%. A wood-knock test on my enclosure proves its density/rigidity.

Joken · « **Reply #977 on:** Apr 15, 2015 at 01:34 PM »

Quote from: fredreadrick on Apr 15, 2015 at 01:09 PM

sir, marami naka-advertise sa OLX.ph....phenolic plywood / board
available din sa mga suking hardwares & lumber construction supplies
nasa P1200 - 1500 per 4'x8' sheet.

nice. thanks for this info bro. baka magawan ko na ng box yung an alnico ko

timber715 · « **Reply #978 on:** Apr 15, 2015 at 01:36 PM »

Quote from: fredreadrick on Apr 15, 2015 at 12:06 PM

Used film faced plywood on my last build.
Even ang surface, very stiff, 13 ply , dense -no void, 18mm thk

That is commonly used for making concrete forms.... They do not accept paint easily bec that is the nature of the laminate and the reason why it is used for the forms.

RXV · « **Reply #979 on:** Apr 15, 2015 at 01:38 PM »

Quote from: fredreadrick on Apr 15, 2015 at 12:06 PM

Used film faced plywood on my last build.
Even ang surface, very stiff, 13 ply , dense -no void, 18mm thk

Sir, how did you apply wood glue to the adjoining areas kung may film na? Wood to wood kasi ang best adhesion di ba? Tinapyas mo pa ba ang film? or 45 degree cut? Or used another adhesive (construction adhesive, epoxy)?

Pero parang ok nga yang phenolic board, dahil may smooth finish na.

deist · « **Reply #980 on:** Apr 15, 2015 at 01:53 PM »

A possible issue I see is with the reflective surface of the film/laminated face; if you are using it inside the speaker box, sound-waves will bounce back & forth.

Nelson de Leon · « **Reply #981 on:** Apr 15, 2015 at 02:23 PM »

Quote from: deist on Apr 15, 2015 at 01:53 PM

A possible issue I see is with the reflective surface of the film/laminated face; if you are using it inside the speaker box, sound-waves will bounce back & forth.

May solution jan.

deist · « **Reply #982 on:** Apr 15, 2015 at 02:26 PM »

Acoustic foam?

Quote from: Nelson de Leon on Apr 15, 2015 at 02:23 PM

May solution jan.

fredreadrick · « **Reply #983 on:** Apr 15, 2015 at 02:31 PM »

The film is very thin, sanded [exposing the wood] the portion to be joined. Roughened the whole interior surface before application of lining. I'm experimenting only with different enclosures sizes & configuration. I work in a construction, have unlimited supplies of form plywood on site

.

RXV · « **Reply #984 on:** Apr 15, 2015 at 02:33 PM »

Quote from: fredreadrick on Apr 15, 2015 at 02:31 PM

The film is very thin, sanded [exposing the wood] the portion to be joined. Roughened the whole interior surface before application of lining. I'm experimenting only with different enclosures sizes & configuration. I work in a construction, have unlimited supplies of form plywood on site .

Nice, madali lang pala i-sand. Meron bang phenolic board na 1 sided film lang? para yung outer part lang yung may film finish

deist · « **Reply #985 on:** Apr 15, 2015 at 02:41 PM »

If the film can be sanded down easily then that's good news! Thanks for the info bro.

I dont suggest lining the entire length of the box walls with foam, that will add mass to the internal volume and if the added mass wasnt taken into consideration when designing the box then it will alter the alignment, in other words mawawala sa tono ang kahon.

It might give an illusion of better bass but basically it's just bloated lows and at the expense of other frequency range mostly in mid highs to highs. Been there, done that

Quote from: fredreadrick on Apr 15, 2015 at 02:31 PM

The film is very thin, sanded [exposing the wood] the portion to be joined. Roughened the whole interior surface before application of lining. I'm experimenting only with different enclosures sizes & configuration. I work in a construction, have unlimited supplies of form plywood on site .

deist · « **Reply #986 on:** Apr 15, 2015 at 02:43 PM »

Same question

Quote from: RXV on Apr 15, 2015 at 02:33 PM

Nice, madali lang pala i-sand. Meron bang phenolic board na 1 sided film lang? para yung outer part lang yung may film finish

fredreadrick · « **Reply #987 on:** Apr 15, 2015 at 02:50 PM »

meron sirs, kaso ung availability sa atin....
meron nga na may film ung 1 face & rough naman on the other face.

fredreadrick · « **Reply #988 on:** Apr 15, 2015 at 03:03 PM »

Back to the topic....
On my next build i'm contemplating on DBR
http://www.frugal-phile.com/boxlib/woden/MarkAudio-2xA7-DBR-290610.pdf
http://www.frugal-phile.com/boxlib/woden/MarkAudio-2xA7-DBR-290610.pdf
may nakasubok na ba nito....

JoeyGS · « **Reply #989 on:** Apr 15, 2015 at 03:26 PM »

You could be the first one....... This would be nice - a big bookshelf

Will you be using the Alpair 7.3?

Quote from: fredreadrick on Apr 15, 2015 at 03:03 PM

Back to the topic....
On my next build i'm contemplating on DBR

http://www.frugal-phile.com/boxlib/woden/MarkAudio-2xA7-DBR-290610.pdf
http://www.frugal-phile.com/boxlib/woden/MarkAudio-2xA7-DBR-290610.pdf
may nakasubok na ba nito....