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 21" sub Box & Review ..., 1 heavy @ss scoop box ...
(...Rovin...)
Posted: Jul 22 2009, 09:55 PM


D' SpL MaN


Group: Moderator
Posts: 4,515
Member No.: 15
Joined: 7-August 07



yes its 21" i type not 12" mistake

BUT its a pro audio build , yes i know its the ICE section - i see a few others on here so mods please allow me to show whats inside 1 of these enclosures ...

widest speaker i have seen in real - not tallest or heaviest , have seen a 18" RE XXX & 15" Premier 8000 which is taller & alot heavier

http://www.pyleaudio.com/itemdetail.asp?br...&model=PDW21250

# 8 Ohm Impedance
# 1000W RMS/2000W Peak Power
# 22 Hz Resonance
# Frequency Response: 22 Hz - 4K Hz
# Sensitivity: 1W@1M: 107 dB
# Magnet Weight: 350 Oz
# 4'' Aluminum Voice Coil
# Diameter: 21.8''
# Mounting Depth: 10.2''
# Die-Cast Aluminum Frame LJD


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now that ur eyes have popped out laugh.gif ... push them back in & have a close look at the layout which i have marked on 1 of the sides (if u not seeing it good then save the pic & zoom in on the markings)

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this box was ALOT of work - took 3 sheets of 3\4" plywood + more ply to make the scoop part

so i really couldnt stop to take pics of the pieces going in 1 at a time


here is a inside shot of it b4 the curved scoop & a angle piece was added on after :

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the completed box :
had to get help to lift it upright to take pics but during the entire build its just me alone doing all the heavy lifting ...sad.gif

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Review :

in the car audio there exist 5000+wrms subs but "only" 1000wrms in pro audio is considerable , especially with the cone area of a 21" speaker & a horn loaded enclosure .

Note i said speaker & not sub since its freq response is pretty wide ... its a brand new never played b4 8 ohms svc speaker & i had 'only' 500wrms of car amp power to test it in full range mode with cut off point of around 35hz according to the design ...to play the upper vocals & highs i used 1 RCF N850 getting about 100-150wrms which was a really nice match to it in both tones & loudness

IMHO it sounded pretty good for a box in the open outdoors with a full range signal & with a slight bit of 12 band EQing from my car deck ...i played from oldies like BGs to recent colby cailat adult contemporary to dance hall & rap

...it played from vocals to bass though not so good on certain jeezy low freq bass songs like 'white girl or 3 6 mafia 'late night tip' ...maybe it will do better on those when its broken in properly or with more power

i even tried it playing just bass off my orion 2500d monoblock which shud be giving the speaker about 500-600wrms @ ohms , sounding quite good with that too ... u can feel it strongly hitting ur body if u stand up close

so u can use this in full range setting or bass only setting & it will do the job either way ...does not shake ur innards from far like 30-40ft away but u do hear its tones quite well ...quite a big heavy enclosure so its not something u wud enjoy moving around alot ... laugh.gif ...(unless u put it on 4 wheels) ... the owner said its for personal use in his backyard ...ohmy.gif

he PMed me his review on it :

QUOTE
Did a severe testing on box today.....well u know d police intervened ..LOL


i figure he & his neighbors might not get along too good from now on ... laugh.gif laugh.gif laugh.gif

like i said above this exclosure was ALOT of work - all those angles & precise measurements took me a wk to do this , not working 8hrs\day on it but this took alot of energy & time - i could have built 5 car audio slot port boxes in the same amt of time ... i was happy for the challenge & experience though ..... 8-)


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***The no-nonsense Mod***... whip.gif

ay doh play no movado sh!t music rong me eh...new_2gunsfiring_v1.gif


152.5dbs with 1 15" on Iasca Meter 12\7\09 : Manny Ramjohn stadium ... cool.gif


...CrEePeRs CrEw RuLe !!!...
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-Roach-
Posted: Jul 22 2009, 11:14 PM


-iN De ShAdOwZ-


Group: Administrator
Posts: 11,370
Member No.: 1,780
Joined: 11-April 08



*Speechless*.. ohmy.gif thumbup.gif thumbup.gif


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(̅_̅_̅_̅(̲̲̲̲̲̅̅̅̅̅̅(̅_̅_̲̅d̅u̲̅M̲̅A̲̅U̲̅R̲̅I̲̅E̲̅R̲̅̅_̅_̅_̅() ڪے
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audioholic big D
Posted: Jul 23 2009, 05:01 AM


D' AuDiO PrOdIgY


Group: Member
Posts: 1,801
Member No.: 2,328
Joined: 28-April 09



thumbup.gif thumbup.gif Massive !!!
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-jack-
Posted: Jul 23 2009, 06:50 AM


D' ORIGINAL STALKER!!!


Group: Member
Posts: 4,619
Member No.: 1,934
Joined: 26-August 08



wdmc, that was really a lot of work ohmy.gif

& it looking good to thumbup.gif


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Sly
Posted: Jul 23 2009, 11:34 AM


WeSt SiDe KiLLaH


Group: Member
Posts: 10,001
Member No.: 1,955
Joined: 9-September 08



ohmy.gif .... Sweeet .. Great work Rovin thumbup.gif


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U Shouldn't Throw Stones if u live in a Glass House and if u Hav a Glass Jaw u Should Watch yr Mouth...

U either In CrEePeRs Or U Out .. U Cant b Both or When Its in Yr favor..
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riad
Posted: Jul 23 2009, 12:46 PM


D' AuDiO TeCh MoD


Group: Moderator
Posts: 2,324
Member No.: 1,994
Joined: 16-October 08



man build ah friggin front loaded folded horn yes....

nice work once again. very neat


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Extreme Audio & Performance
Exclusive Authorised Distributors for Cerwin Vega Mobile
738-8547/718-0558
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cunupia_soundz
Posted: Jul 23 2009, 04:02 PM


SpIdEy


Group: Member
Posts: 2,838
Member No.: 1,930
Joined: 20-August 08



excellent work there thumbup.gif


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CrEePeRs for lifee: SPIDEY
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southside connections
Posted: Jul 23 2009, 04:11 PM


D' Scientist


Group: Member
Posts: 6,456
Member No.: 1,928
Joined: 20-August 08



great work rovin


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CrEePeRs cLiP:SOUTHSIDE

me and leffy cah have d same avatar man gosh!!!!
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ward 1 crew
Posted: Jul 24 2009, 08:34 PM


CaLL Me Da PoStMaN


Group: Member
Posts: 163
Member No.: 2,226
Joined: 22-February 09



damn.........real nice work dere rovin....


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(...Rovin...)
Posted: Jul 24 2009, 10:51 PM


D' SpL MaN


Group: Moderator
Posts: 4,515
Member No.: 15
Joined: 7-August 07



thanks guys .... ashamed.gif




.... thumbup.gif


--------------------
***The no-nonsense Mod***... whip.gif

ay doh play no movado sh!t music rong me eh...new_2gunsfiring_v1.gif


152.5dbs with 1 15" on Iasca Meter 12\7\09 : Manny Ramjohn stadium ... cool.gif


...CrEePeRs CrEw RuLe !!!...
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sMASH
Posted: Oct 11 2010, 12:13 PM


ERR....I'M NEWWWWW


Group: Member
Posts: 5
Member No.: 2,330
Joined: 29-April 09



i would really like to see a freq. response curve on one of those things... it could reproduce 22 Hz and up to 4000Hz, but do u really want sumthing to go that high? the enclosure cut off point, at what freq, does the enclosure stop making a difference?

what i am thinking is the enclosure is better at the lower freq. ranges, so wasting power in the higher regions, just wasting power which could have been used for bass.
and a speaker which can reproduce 4000 hz as well as 22 hz,,, i would like to see it compared to sumthing more dedicated to lower frequencies in that same enclosure. that was not to bash, but it has me thinking... i theorize that sumthing which can reproduce 4000 hz well, should not be able to sound very cleanly at the 20 hz region,,
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sMASH
Posted: Oct 11 2010, 12:20 PM


ERR....I'M NEWWWWW


Group: Member
Posts: 5
Member No.: 2,330
Joined: 29-April 09



... oh, yeah, great work rovin,
recently, i have got some ideas and want to do some experimenting of my own.
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