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APEX2181

Printed From: Speakerplans.com
Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
URL: https://forum.speakerplans.com/forum_posts.asp?TID=76896
Printed Date: 05 July 2020 at 9:09am
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Topic: APEX2181
Posted By: apexaudio
Subject: APEX2181
Date Posted: 07 March 2013 at 4:50pm
Dual 18inch subwoofer




Replies:
Posted By: apexaudio
Date Posted: 07 March 2013 at 4:58pm


Sugested speakers BMS 18N862


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Mile Slavkovic


Posted By: Tony Wilkes
Date Posted: 07 March 2013 at 5:26pm
Looking like a gripping thread so far


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www.forteaudio.eu - BMS - db-Mark Processors - Lexon (SAE)


Posted By: burningbush
Date Posted: 07 March 2013 at 5:31pm
Well, I was thinking the design looked to have 0o dispersion - which for a bass cab would be an industry break through worthy of a white (or brown) paper.


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music is the message


Posted By: apexaudio
Date Posted: 07 March 2013 at 5:36pm
Link for other projects in photo album "PA Subwoofers"
https://www.facebook.com/APEXaudio.MileSlakovic

Regards



Posted By: apexaudio
Date Posted: 07 March 2013 at 8:50pm
Single 18 inch subwoofer.




Posted By: mans1000
Date Posted: 07 March 2013 at 8:55pm
Originally posted by apexaudio apexaudio wrote:

Single 18 inch subwoofer.
I like this one.....
 




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"The earth provides enough to satisfy every mans needs...but not every mans greed."


Posted By: apexaudio
Date Posted: 07 March 2013 at 8:57pm
Bassreflex 18 inch subwoofer with extended bass response.




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 07 March 2013 at 9:10pm
Fullrange box with 2x12 inch bass, 4x6 inch mid and 2 inch HF driver.



Posted By: apexaudio
Date Posted: 07 March 2013 at 9:14pm
X-over for HF driver with overcurrent protect.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 07 March 2013 at 9:28pm
Bandpass sub with 12 inch car woofer.

 



Posted By: infrasound
Date Posted: 07 March 2013 at 9:58pm
We can't see any pictures Wink


Posted By: mans1000
Date Posted: 07 March 2013 at 10:07pm
Originally posted by infrasound infrasound wrote:

We can't see any pictures Wink
What ya tell him that for, this thread was just getting good.LOL


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"The earth provides enough to satisfy every mans needs...but not every mans greed."


Posted By: apexaudio
Date Posted: 07 March 2013 at 10:09pm
How can I upload pictures from my PC?


Posted By: VECTORDJ
Date Posted: 07 March 2013 at 10:30pm
Help! I am going blind...............no photos yet. VECTORSONICS


Posted By: Radeon
Date Posted: 07 March 2013 at 10:43pm
when you select post  reply you have an option insert image (icon is small image ),second row of icons above the  text box and images must be of the type, jpg, jpeg, gif, png, and have a maximum file size of 1.0 MB


Posted By: apexaudio
Date Posted: 07 March 2013 at 10:51pm
Dual 18inch sub with FANE colosus drivers and dual 12inch sub.




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 07 March 2013 at 11:01pm
Plans for dual subwoofers.




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 07 March 2013 at 11:27pm
Single 15 inch sub with old RCF driver.




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Mile Slavkovic


Posted By: infrasound
Date Posted: 08 March 2013 at 12:04am
That works Thumbs Up


Posted By: mini-mad
Date Posted: 08 March 2013 at 12:11am
yeah! we have lift off!!!!

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If it sounds like a gorilla is trying to escape, turn it down.


Posted By: apexaudio
Date Posted: 08 March 2013 at 8:42am
Full range TOP, front panel 500x500mm can be rotate 90 degree for useing as single or in line aray setup. Recomanded speakers http://bmsspeakers.com/index.php?id=808


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Mile Slavkovic


Posted By: csg
Date Posted: 08 March 2013 at 8:49am
the twin bass design looks very EV to me

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“The fact is this is about identifying what we do best and finding more ways of doing less of it better”


Posted By: apexaudio
Date Posted: 08 March 2013 at 9:16am
Yes, I want look like PX2181, but I haven't plans for EV.




Posted By: apexaudio
Date Posted: 08 March 2013 at 4:41pm
Full range TOP and MB sub inside


Posted By: VECTORDJ
Date Posted: 08 March 2013 at 6:00pm
Outstanding!!!!


Posted By: Elliot Thompson
Date Posted: 08 March 2013 at 6:29pm
A lot of old forgotten designs. Did you measure the frequency response of the resurrected cabinets or did you just reverse engineer?

Best Regards,


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Elliot Thompson


Posted By: apexaudio
Date Posted: 08 March 2013 at 6:30pm
3D dual 12 inch sub



Posted By: Elliot Thompson
Date Posted: 08 March 2013 at 6:33pm

Originally posted by Elliot Thompson Elliot Thompson wrote:

A lot of old forgotten designs. Did you measure the frequency response of the resurrected cabinets or did you just reverse engineer?

Best Regards,


....

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Elliot Thompson


Posted By: apexaudio
Date Posted: 08 March 2013 at 6:46pm
There isn't 'old forgotten designs' just dual 18 inch sub look like EV, you can't find any designs similar to Full range TOP and MB sub...
Regards


Posted By: Elliot Thompson
Date Posted: 08 March 2013 at 8:35pm


Originally posted by apexaudio apexaudio wrote:

There isn't 'old forgotten designs' just dual 18 inch sub look like EV, you can't find any designs similar to <span style=": rgb251, 251, 253;">Full range TOP and MB sub...</span>
Regards




If they are not old forgotten designs, what are the frequency response of the boxes?

Where are the measured or simulated frequency graphs?

Best Regards,



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Elliot Thompson


Posted By: apexaudio
Date Posted: 09 March 2013 at 9:25am
They are not commercial products, they are my projects for DIY and many drivers can be used in this boxes with satisfactory result and with different response. Boxes are simulated and tuned with real life measured for my own needs, anyone who want to diy some of this design can do measurements and simulation for himself. At the end all designs sound great.
Regards


Posted By: apexaudio
Date Posted: 09 March 2013 at 11:28am
Next Project 18 inch Bandpass suwoofer.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 09 March 2013 at 2:00pm
18inch ported horn idea 1000x500x750mm.



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Mile Slavkovic


Posted By: Elliot Thompson
Date Posted: 09 March 2013 at 3:32pm

Originally posted by apexaudio apexaudio wrote:

They are not commercial products, they are my projects for DIY and many drivers can be used in this boxes with satisfactory result and with different response.<font face="verdana, geneva, lucida, lucida grande, arial, helvetica, sans-serif" size="2"><span style="line-height: normal;"> Boxes are simulated and tuned with real life measured for my own needs, anyone who want to diy some of this design can do measurements and simulation for himself. At the end all designs sound great.</span>
<font face="verdana, geneva, lucida, lucida grande, arial, helvetica, sans-serif" size="2"><span style="line-height: normal;">Regards</span>


Okay mate, I am not going to confuse you anymore. I bid you good luck on your projects.

Best Regards,

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Elliot Thompson


Posted By: ermita
Date Posted: 09 March 2013 at 5:44pm
Originally posted by apexaudio apexaudio wrote:

Ported horn idea.


looks like WLX from outsideSmile



Posted By: apexaudio
Date Posted: 09 March 2013 at 5:59pm
Yes but inside isn't that complex for DIY and horn is longer Wink
Thank you Elliot,
Best Regards


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Mile Slavkovic


Posted By: apexaudio
Date Posted: 10 March 2013 at 1:05pm
Martin WLX is just modern version of EV W-bin, but much more complex. I want longer horn around box with simple corners.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 11 March 2013 at 4:20pm
MB Sub 15 use 15 inch driver.




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 11 March 2013 at 7:16pm
Another 18inch horn idea 1000x600x750mm...




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 14 March 2013 at 10:25am
Mid horn idea




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 14 March 2013 at 7:54pm
Today this sub was shaking my house Smile




-------------
Mile Slavkovic


Posted By: mans1000
Date Posted: 14 March 2013 at 7:58pm
ConfusedConfused

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"The earth provides enough to satisfy every mans needs...but not every mans greed."


Posted By: apexaudio
Date Posted: 14 March 2013 at 8:07pm
I change port, now is 150x100mm.

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Mile Slavkovic


Posted By: JohnnyPyro
Date Posted: 14 March 2013 at 8:30pm
is it me? or does the double 18" sub look like 2 beyma sb18's joined together ? none of these designs look original

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Pyrotechnics... its not rocket science, well.... actually it is !! :o)
Powered by MC2 & XTA


Posted By: apexaudio
Date Posted: 14 March 2013 at 8:42pm
Can't be 'original' and good design in 2013 Wink
Any new design is based on some old design with some improvements an upgrades.
This is Beyma dual 18inch sub and you can compare with my design caled APEX2181 like EV phoenix2181, that is similar design.



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Mile Slavkovic


Posted By: giordihc
Date Posted: 14 March 2013 at 9:03pm
Originally posted by apexaudio apexaudio wrote:

Martin WLX is just modern version of EV W-bin, but much more complex. I want longer horn around box with simple corners.



its not EV..


Posted By: apexaudio
Date Posted: 14 March 2013 at 9:14pm
Ok, I don't know there is many similar designs like EV TL4050 and EAW BH882... at the end working princip is important ... ported horn.

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Mile Slavkovic


Posted By: Teunos
Date Posted: 14 March 2013 at 9:33pm
He's probably refering to the fact that the w-bin is in essence a design by Don Keele when he was working for JBL.

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Best regards,
Teun.

,,Diamonds are forever''


Posted By: apexaudio
Date Posted: 15 March 2013 at 8:14am
I think that all the constructions of symmetrical horn have all the advantages except size.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 16 March 2013 at 12:31pm

[/QUOTE]

its not EV..[/QUOTE]

JBL not EV, my mistake I'm sorry.
Regards


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Mile Slavkovic


Posted By: apexaudio
Date Posted: 16 March 2013 at 12:32pm
Originally posted by Teunos Teunos wrote:

He's probably refering to the fact that the w-bin is in essence a design by Don Keele when he was working for JBL.

My mistake, thanks for info.
Regards


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Mile Slavkovic


Posted By: apexaudio
Date Posted: 19 March 2013 at 5:46pm
HF crossover with protect.

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Mile Slavkovic


Posted By: apexaudio
Date Posted: 19 March 2013 at 6:07pm
Single TOP with 18 inch subs.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 21 March 2013 at 11:27am

SB18 outdoor



BMS 18N862


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Mile Slavkovic


Posted By: apexaudio
Date Posted: 22 March 2013 at 1:47am
TQWT box idea for 5 inch driver



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Mile Slavkovic


Posted By: MarjanM
Date Posted: 22 March 2013 at 2:02am
Originally posted by apexaudio apexaudio wrote:


SB18 outdoor



BMS 18N862

Using that driver in that box is a pure sin.


-------------
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 22 March 2013 at 2:11am
Originally posted by MarjanM MarjanM wrote:

Originally posted by apexaudio apexaudio wrote:


SB18 outdoor



BMS 18N862

Using that driver in that box is a pure sin.

This box is made only for test and BMS 18N862 is much beter than overpriced EVX180B used by DYNACORD.
Regards


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 22 March 2013 at 2:27am
True, but that box was designed for the EVX180b and with completely different results on mind.
BMS 18N862 is a great driver but it is meant to be used in true subwoofer cabinets covering 25-60Hz range which this Dynacord box is not able to produce.


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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 22 March 2013 at 2:51am
Originally posted by MarjanM MarjanM wrote:

True, but that box was designed for the EVX180b and with completely different results on mind.
BMS 18N862 is a great driver but it is meant to be used in true subwoofer cabinets covering 25-60Hz range which this Dynacord box is not able to produce.

It's true but over 40Hz this box with single driver sound equal as dual 18 inch bass reflex box.
In PA reality there is no such thing like true subwoofer cabinets covering 25-60Hz range with 18 inch driver.


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 22 March 2013 at 3:02am
Then you need to learn a bit more then you think you know.

-------------
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 22 March 2013 at 3:20am
Originally posted by MarjanM MarjanM wrote:

Then you need to learn a bit more then you think you know.

For example d&b B2 is typical bandpass PA subwoofer (dual 18") and there is -10dB at 30Hz on graph.



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 22 March 2013 at 3:40am

18N862 CURVES

Frequency Response measured 1000 W (89.4 V) at 1 m in a vented enclosure of 170 litre tuned 32 Hz on floor incl. 2nd and 3rd harmonic distortion raised 10 dB.




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Mile Slavkovic


Posted By: apexaudio
Date Posted: 22 March 2013 at 3:51am
2181 Specifications

Frequency Response (-3 dB)45 - 160 Hz
Frequency Response (-10 dB)40 - 180 Hz


Sensitivity 1 W/1 m105 dB
Max. SPL/1m (calc)141 dB Half Space



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Mile Slavkovic


Posted By: Pasi
Date Posted: 22 March 2013 at 6:44am
PUKK-218.




Posted By: burningbush
Date Posted: 22 March 2013 at 10:59am
mmm, sexy graph.


-------------
music is the message


Posted By: apexaudio
Date Posted: 22 March 2013 at 11:47am
I try to get that graph with M 218PP but box is to big.




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Mile Slavkovic


Posted By: Tony Wilkes
Date Posted: 22 March 2013 at 12:20pm
Originally posted by MarjanM MarjanM wrote:

True, but that box was designed for the EVX180b and with completely different results on mind.
BMS 18N862 is a great driver but it is meant to be used in true subwoofer cabinets covering 25-60Hz range which this Dynacord box is not able to produce.

Marjan,

I actually only recommend it for real Infra projects i.e. Theater's and Home Theatre systems where the punter wants to shake foundations. 20-80 hz

Tony 


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www.forteaudio.eu - BMS - db-Mark Processors - Lexon (SAE)


Posted By: infrasound
Date Posted: 22 March 2013 at 12:20pm
Originally posted by burningbush burningbush wrote:

mmm, sexy graph.

Same.. Sad isn't it! Tongue


Posted By: apexaudio
Date Posted: 23 March 2013 at 3:07pm
Originally posted by burningbush burningbush wrote:

mmm, sexy graph.

Looks like PPSL give some benefit Smile

about:blank" rel="nofollow">


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Mile Slavkovic


Posted By: Pasi
Date Posted: 23 March 2013 at 5:31pm
Funny. That pic of the very first proto is still somewhere online...


Posted By: apexaudio
Date Posted: 24 March 2013 at 3:03pm
Mount one driver facing outwards with the other driver inverted and facing inwards harmonic distortion is reduced but in basic this box is 6th order bandpass.

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Mile Slavkovic


Posted By: MarjanM
Date Posted: 24 March 2013 at 4:00pm
As i have said, you have a lot to learn yet.
Take a read on the Ultra festival that has just finished in Miami. Most of the systems were tuned down to 25Hz. And few stages had double 18 reflex boxes doing that. So you are wrong.


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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 24 March 2013 at 5:09pm
Originally posted by MarjanM MarjanM wrote:

As i have said, you have a lot to learn yet.
Take a read on the Ultra festival that has just finished in Miami. Most of the systems were tuned down to 25Hz. And few stages had double 18 reflex boxes doing that. So you are wrong.

25Hz -10dB with EQ


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 24 March 2013 at 5:17pm
Really?




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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 24 March 2013 at 6:22pm
There is no picture, but as I read BASSMAXX SP218 response is -10dB@26Hz and for d@b B2 I already post graph.

"This year I returned at the invitation of UMF Audio Chief Terry MacNeil (“Dr. Bassenstein”) to perform alignment work on systems as a couple of the stages.

In particular, a lot of attention gets paid to the subwoofers - there’s a lot of content below 50 Hz, and the subs need to be as “right” as possible. Unfortunately, festival scheduling issues restricted my efforts to a fairly tight window..

Advance Work
The PA vendor for both the main stage and Bayfront stage was Beach Sound . The main stage would be equipped with 32 d&b audiotechnik J8/J12, 16 d&b J-Sub subwoofers flown along the J8s, and 24 d&b B2 subs in three high CSA stacks, four stacks per side.

In addition, BASSMAXX supplied 16 beta test subwoofers currently given the model designation SP218 or the “Dub-ill 18.” These are double 18-inch direct radiating vented subs. The challenge would be integrating the centered BASSMAXX subs with the B2s flanking them."





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Mile Slavkovic


Posted By: MarjanM
Date Posted: 24 March 2013 at 6:51pm
Yes that is true, but that is a single box response of BASSMAXX SP218, and boxes used at ultra are MLM218 which are completely different then SP218, and has -3db at 25Hz with -10 being at 20Hz.

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 24 March 2013 at 9:38pm
Looks like MLM218 use Yamaha procesing on PA subwoofer Smile

"Advanced YST II Brings You Super Bass
The effectiveness of Advanced YST II (Yamaha Active Servo Technology II) is based upon two principles: the Helmholtz Resonator and negative-impedance drive. 

How does it work? Advanced Yamaha Active Servo Technology (Advanced YST) uses an Active Servo Processing amplifier circuit to achieve zero impedance so the speaker unit has a more linear motion, resulting in tighter bass reproduction and minimizing distortion because everything in the subwoofer moves together smoothly. 

In Advanced YST II, an Advanced Negative Impedance Converter enables the speaker cone to be driven with even tighter control--it can dynamically adjust in order to select the optimum values for speaker impedance variation. The result is more stable and accurate low range response, as well as higher sound pressure levels, for more natural and energetic bass reproduction. "




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Mile Slavkovic


Posted By: MarjanM
Date Posted: 24 March 2013 at 9:53pm
No it uses the Powersoft IPAL technology.

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: Ody
Date Posted: 24 March 2013 at 11:19pm
undefined
What about Coda sc8 sc4 they claim also impressive results as ipal technology in terms of freq responce and group delay between Ultralowfrew and upperlowfreq and they manage to do it in really small enclosures.
  • 2 x Coda Audio 18” extreme high output subwoofer
  • Velocity sensors for feedback loop control
  • Extended frequency range down to 20 Hz (-6 dB), 25 Hz (-3 dB)
  • Ultra low distortion
  • Fast transient response, the upper and the ultra low frequency are time aligned
  • Compact size for reduced labor and transport costs
http://www.codaaudio.com/products/subwoofers/sc-sensor-controlled-subwoofers/sc4/sc4-overview/


Posted By: apexaudio
Date Posted: 24 March 2013 at 11:41pm
We go off topic, I do not want discussion about equipments for rental. I give some ideas for new diy projects anybody can use it or leave it, I do not want advertising any brand.
Regards


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 25 March 2013 at 12:06am
Apex, we do love discussing new technologies here. Understanding the technology can really help in any DIY projects. 

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: Ody
Date Posted: 25 March 2013 at 12:14am
Fair enough mate. Really no intetion on advertising stuff. Its just that technologies like the yamaha you metioned or ipal or sencor controlled they really move in a progressive and alternative way pushing the boundaries. And as the Diy audio community have contribute in signifacant levels in the progression of audio systems design it can be only a good think when new technologies fall on the table of discussion even if they are a bit off topic.

Cheers and respect for the effort and spirit you put in your work.


Posted By: apexaudio
Date Posted: 25 March 2013 at 12:28am
Originally posted by Ody Ody wrote:

Fair enough mate. Really no intetion on advertising stuff. Its just that technologies like the yamaha you metioned or ipal or sencor controlled they really move in a progressive and alternative way pushing the boundaries. And as the Diy audio community have contribute in signifacant levels in the progression of audio systems design it can be only a good think when new technologies fall on the table of discussion even if they are a bit off topic.

Cheers and respect for the effort and spirit you put in your work.

It's not advertising if you explan basic princip and use some brand product as example.
Cheers
Marjan I like your idea to made symmetrical scoops.



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Mile Slavkovic


Posted By: MarjanM
Date Posted: 25 March 2013 at 12:44am
It has many advantages, can be stacked any way you like, phase response is better then on a normal scoop and so on.

-------------
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 25 March 2013 at 1:11am
Originally posted by MarjanM MarjanM wrote:

It has many advantages, can be stacked any way you like, phase response is better then on a normal scoop and so on.

Old scoop never was interesting to me, it's big and ugly. It's about time to made new version for 21st century. Advantage of folded horn is that the floor extended horn length.
Regards



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Mile Slavkovic


Posted By: apexaudio
Date Posted: 25 March 2013 at 10:44am
Another version of symmetrical scoop.




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Mile Slavkovic


Posted By: all bass
Date Posted: 25 March 2013 at 11:12am
I have seen those rear loaded w-bin things before. Can't find a single picture of one on Google, so i guess the design never really became popular.


Posted By: _djk_
Date Posted: 25 March 2013 at 11:16am
" in basic this box is 6th order bandpass."

Yes, and no.

The bandpass gain is very minimal and occurs only at frequencies higher than where it would be crossed over at to the mids and HF cabinets at.

http://i56.photobucket.com/albums/g196/dkleitsch/COE08-3.jpg" rel="nofollow - http://i56.photobucket.com/albums/g196/dkleitsch/COE08-3.jpg

I started selling this type of cabinet in 1988 with dual 15s and the prototypes were flat to over 200hz with no bandpass gain evident. When the backwards mounted driver was mounted 'properly' the cabinet showed a narrow-width bandpass gain of about 6dB in the 160hz region. This can be seen by using a Hornresp model, although it cannot simulate the response that I measure in it's normal (reversed driver) state.

The bandpass gain was at the 1/4W length corresponding to the depth of the driver plenum. I theorize that the irregular-shaped cavity caused by the magnet nestling into the front of the cone of the other driver, and the reduced cavity volume, accounts for the lack of gain measured in the prototype.

My current version of the PPSL (push-pull slot-loaded) has the plenum depth reduced even further to extend the useable bandwidth to an even higher frequency. A 400hz crossover point is possible with careful design, and a 250hz crossover point with dual 18 versions.


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djk


Posted By: MarjanM
Date Posted: 25 March 2013 at 11:32am
Originally posted by all bass all bass wrote:

I have seen those rear loaded w-bin things before. Can't find a single picture of one on Google, so i guess the design never really became popular.




-------------
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: Heathrow_B_line
Date Posted: 25 March 2013 at 11:37am
Originally posted by MarjanM MarjanM wrote:

Originally posted by all bass all bass wrote:

I have seen those rear loaded w-bin things before. Can't find a single picture of one on Google, so i guess the design never really became popular.


 
those handles look rubbish!
 
who made them?  the chinese?
 
cannot be a professional brand as full grill required for the pro market... will the chinese ever learn???
 
Big smile


-------------
Produce a killer sound. Take no prisoners.


Posted By: MarjanM
Date Posted: 25 March 2013 at 11:53am
What are you talking about???
It is a Bold Audio BA121SC.


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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: Heathrow_B_line
Date Posted: 25 March 2013 at 11:55am
Originally posted by MarjanM MarjanM wrote:

What are you talking about???
It is a Bold Audio BA121SC.
 
where in china is Bold Audio from?
 
these chinese ppl never think of anything new, only copying old designs!


-------------
Produce a killer sound. Take no prisoners.


Posted By: MarjanM
Date Posted: 25 March 2013 at 11:58am
????? Google man, google.
What foocking China???


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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 25 March 2013 at 12:12pm
djk, nice work, I like to hear this PPSL.
Marjan, full grill is required, some animals can go inside box, maybe rat or snake Smile
Regards


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 25 March 2013 at 12:33pm
Full grill is required, but if the customer asked for a different look then we give them a different look :-)

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 25 March 2013 at 12:45pm
Originally posted by MarjanM MarjanM wrote:

Full grill is required, but if the customer asked for a different look then we give them a different look :-)

Grill can be inside horn...



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Mile Slavkovic


Posted By: MarjanM
Date Posted: 25 March 2013 at 12:53pm
yes there is a grill inside the horn :-)

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713


Posted By: apexaudio
Date Posted: 25 March 2013 at 1:28pm
Originally posted by MarjanM MarjanM wrote:

yes there is a grill inside the horn :-)

Ok, that is safe to use it outdoor Smile


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Mile Slavkovic


Posted By: MarjanM
Date Posted: 25 March 2013 at 1:33pm
Actually a club environment is more problematic if there is no grill. I am not aware of any animal that will stay long inside the subs when they are pumped full blast. But in a club, bottles and all kind of garbage will find its way inside the box very fast.

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Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713



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