Underseat subwoofer-ported or sealed
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New member Username: DoccbstPost Number: 1 Registered: Nov-06 | Design considerations for underseat subwoofer 10"x10"x7" .462 cubic ft.(outside diameter -I would prefer a ported/vented enclosure of course.I may be able to stretch out .66 cu ft-- But can or should this be done-?-will a sealed box perform and give adequate bass-I want hidden stealth type setup-All of the powered subs Ive found for this purpose seem a little underpowered (and expensive) in reviews,Any input appretiated-I'm not after any competion grade system--obviously from component cost-- just nice budget sound.Very nice I hope. Subwoofer:Pyramid PW876S 8" Square Subwoofer-specs(all I could find) * Special Patten Paper Black Square Cone * Wide Heavy Foam Surround * Rigid Powder Coated Stamped Square Basket * Bumped & Vented Pole Piece * Rubber Magnet Boot * 65 oz. Magnet * 1.5'' 2-Layer Kapton Voice Coil * 250W RMS/500W Peak * SPL (1W/1M): 87.4dB * 4 Ohm Impedance * Overall Diameter: 8.62'' * Mounting Depth: 4.13'' * FS 55.3HZ * Voice Coil 1.5 KSV * VAS .55 Cu/Ft Power Amplifier:Soundstorm F4100 Force Series 4-Channel Amplifiers Tri-mode operation Remote subwoofer level control High-pass crossover Variable input level control Line & speaker level input Manufacturer Sound Storm Laboratories Manufacturer Part Number F4100 Dimensions 2" Height x 9" Width x 6.5" Depth Channel(s) 4 Channel(s) Product Name 4-Channel Car Amplifier Signal to Noise Ratio (SNR) 102dB Additional Information Bass boost variable: +18 dBChannel separation: 90 dBDamping factor: 125+ Output Power 4 x 100W RMS (9Hz to 50kHz) @ 2Ohm 0.01% THD 4 x 50W RMS (9Hz to 50kHz) @ 4Ohm 0.01% THD Product Name 4-Channel Car Amplifier Filtering 40Hz to 150Hz - Low Pass Filter The Head unit Dual XDM-6820(200W peak 4x18 RMS) will power(front -kickpanel)2 Clarion 6.5" 2-way SRR1616 Box says 30HZ to 22,000hZ 180w(peak) 40 RMS/per channel. The power amp will be powering the sub bridged on 3-4 channel and (door)two Panasonic 6.5" CJA1623U (160W peak)35Hz-22,000 HZ 2-way speakers on channel 1-2-thru speaker level input and maybe 2 6"x9"so I can adjust volume from head Unit ?is that correct? The system sounds pretty good (fair) now-all the high freq I can stand,adequate mids and since the bass lacked-I'm using a $40-ebay-Rampage powered tube 8"sub (200w) it's ok --just too big to fit under seat--its in the back floorboard--I was going to disassemble for project but decided the extra square sub $30.00 and amp $30.00 were minimal investment for results. Any Ideas-I've also ordered 2 Blaupunkt PCxb693 6"x9" 3-way car speakers-that will fit in side panels in rear seat or cargo area--(I hope) that had pretty good reviews.Im just trying to upgrade factory audio-***2 - 5 1/4th and FM radio *** any input appretiated- try not to bash me too hard-I'm new to car audio DIY-doccbst |
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Silver Member Username: KenwaPost Number: 541 Registered: May-04 | Dont but that sub or amp, and with that minimal amount of space going with a vented box would be pointless. |
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Silver Member Username: KenwaPost Number: 542 Registered: May-04 | buy** |
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New member Username: DoccbstPost Number: 2 Registered: Nov-06 | Thanks for interest Kenny--but components are purchased after considerable research into performance vs cost--ex. Kicker at 8" $140.00 I did take an unexpected hit with freq. Fs at 55 Hz-so I am even more interested in porting the box as that will lower frequency response "some" by the way the Kicker 8" says ported box at .66 cu ft-so why couldnt this one also port at that size I guess I will build sealed and listen to it then maybe try a 2" port 5.5" long-as per box design software on 12V.com--this what I want but with square sub--supposedly an 8" sq sub performs as a 10" round--what I've read anyway-thanks  |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2194 Registered: Apr-06 | sry if i come off as offensivee but how much research have u done??? becauuse it seems all those products were bought at wal mart :\ BTW thts not a good thing |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2195 Registered: Apr-06 | DIDNT BUMP |
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Silver Member Username: J_baby15Kentucky Post Number: 765 Registered: Feb-06 | yea man i dont think u want a pyramid sub. just a guess, but do a lil more research. |
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New member Username: DoccbstPost Number: 3 Registered: Nov-06 | No offense taken--I'm just cheap on my old 84 Isuzu Trooper:amp--Amazon $30.00 cheapest 4 channel tri-mode bridgeable I could find -50 RMS/per channel @ 4 ohms Sub-one of few square subs available $30.00-Teptronics Clarion 6.5--local sound shop--$50.00 Panasonics--sound as good as clarion-$28.00--Frys=Outpost Dual Cd/with I-pod mp3-WMA--$98.00 Buy.com Yea--I researched and Froogled- wal-marks only has the 10" Sony X-plod--Hate Sony anyway & needed 8"--thanks for input- |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2196 Registered: Apr-06 | hahahah wow bro not only did u do researched but u were researchin the worst products out thier and u no wut is ironic?? u hate sony and every thing else ur buyin is either worse or ON PAR with sony honestly if i were u i would deffinatly not even attempt to WASTE my money on tht garbage ALSO u get wut u pay for and by the looks of it ur stock system tht comes in the car will be louder |
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New member Username: DoccbstPost Number: 4 Registered: Nov-06 | Just a thought--but isn,t this a help forum--no one has even offered any help -just destructive criticism--maybe rap does cause anger issues-(I like some of it),and hip-hop,and rock,and even a little jazz,but-I did say "budget" and also stated cheap--yes I could spend thousands but I spent that on a 42" plasma--and yes fault,can be found with that also, and LCD, and rear projection also--but I like the plasma best--and as far as my anger-or dissapointment--it's OK guys--it's all good--I'll figure it out myself--unless someone can give me better options--like a decent under $100 8" subwoofer thats capable of 20-120 HZ-I havent found one-I'll buy it --and give you the Pyramid(good for a powerful magnet at least--65 ozs)and personally to "driving reckless"--I built my Home Theatre system for $5,000--and insurance appraisal for replacement "market value" is $20,000---yes,you get what you pay for,and "work for" and yes, I went through a lot of forum bashing and --oh,you shoulda bought this-- putting it together also.no harm no foul--my 2 cents-case closed-see new post-maybe help me out-thanks |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2211 Registered: Apr-06 | well lets see were should i start oh yea man ur seriously cool u might spend 5k on a home theather system but tht doesnt mean jack i can think of 2 8" woofers tht are ten times better http://ascendantaudio.com/assassin8specs.html 50 bucks a piece u didnt research tht did u buddy nah didnt think so also try surfing forums for stuff for sale buying used stuff still as good as new wen ur only wiling to spend nuting on an amp and tht pyramid LAUGHS it cant do nething it says its crap u say were not helping u but dont u think tht help is tryin to prevent u from buyin SH1T try listening and stop tryin to think ur right thiers better options for the money ur jusst being hardheaded :\ |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2212 Registered: Apr-06 | http://cgi.ebay.com/PHOENIX-GOLD-XENON-X400-1-400W-MONOBLOCK-AMPLIFIER-NEW_W0QQi temZ140049171562QQihZ004QQcategoryZ18797QQrdZ1QQcmdZViewItem and this amp for 110 will push them fine look 200 bucks for a very good system wut a lil RESEARCH will do huh bcae1.com ^^^read this also search this forum for the good the bad the ugly list and ull see wut to buy and wut not to buy |
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New member Username: DoccbstPost Number: 6 Registered: Nov-06 | Thanks for interest driving-I am here to learn-I do value others opinions-its not about the money its about the best bang for the buck-I found these CPT 8" & they claim 10hz-400Hz $79.00-is that real or hype?--looks pretty good to me--or is this junk also-may be just what I need for small enclosure as described: http://www.mainstreet-audio.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code= EF-80&Category_Code=CDTSU I also looked at The Polk/MOMO MM2084--40hz $79.00 and Rockford Fosgate PS18S4---40HZ 2 for $71.98 -Crutchfield-great reviews also on both The assasin is only 46.5 hz fs Znom 4 ohms BL 12.3 n/a Cutout diam. 7 1/4 Re 3.5 ohms Sd 187 cm2 Outer diam. 8 1/2 Fs 46.5 Hz Mms 80 g Mounting depth 5 1/8 Vas 7.3 L Xmax 15.5 mm Weight 13 pounds Qms 2.72 Spl 83.2 dB 1W/1M Voice Coil diam. 2 inch aluminum Qes .54 Rec. Power 150 W Voice coil Single 4 ohm Qts .45 Rms 350W Cone Paper pulp Le 3 mH Price $50.00 |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2215 Registered: Apr-06 | i my self have CDT speakers like the one in the like the 6.5" EF series they sound good so yes i would reccomend them but trust me the assasin is the best choice and stay away from Rockford subs i had a p212s4 and they sucked also look at Tangband honestly id rate it like this 1. assasin 2. CDT EF series 3. Dayton 4. Tangband also just because it says 46hz tht doesnt mean it wont play below tht throw it in a sealed box and it will play a very large variety of Hz its an SQ woofer (the assasin) ull like it and u cannot here 10-20hz all u can do is feel it so idk why in the world u want a woofer to play at those frequencies |
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New member Username: DoccbstPost Number: 7 Registered: Nov-06 | Now we're getting somewhere-no I didnt catch the assasin was square-my bad-but you would still pick it over- TB or Dayton--guess so-what you listed--I posted here about the Tang Band and Dayton:going to look again--at assasin https://www.ecoustics.com/electronics/forum/car-audio/288660.html Tang Band: http://www.partsexpress.com/pe/showdetl.cfm?AID=1457539&PID=440939&Partnumber=26 4-854 Dayton Quatro: http://www.jdoqocy.com/click-440939-1457539?url=http://www.partsexpress.com/pe/p showdetl.cfm?&DID=7&Partnumber=295-545 |
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Gold Member Username: Drivingreckless\red {TREO}, \orange {USA} \3 {soon to ... Post Number: 2216 Registered: Apr-06 | yes i saw ur posts thts y i brought them up on this thread im telling u ur not gunna regret the assasin im set on tht the CDTS,TB,Dayton are all ALTERNATIVES but thier is no need not to buy the assasin and with the amp i should do nicel ALSO wen i sed SQ woofer i mean SOUND QUALITY subwoofer..meaning it is built to be pleasing to the ear tight clean bass tht can get loud if u want it to in the right box... it is the closest ur gunna come to a good sub/amp combo i say tht with 100% guarentee |
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New member Username: DoccbstPost Number: 8 Registered: Nov-06 | Bookmarked--I've got re-measure my box area--I'm building the box this weekend--the assassin may be to big for downfire as planned 5 1/8 depth I've only got 7" to play with-so may have to resort to the TB or Dayton--maybe just rearfire to back seat--darn I wanted downfire--so little space to play with.If I use low cut filter at 80 or 100Hz may not matter what direction sub faces--I think? confused again-but I love a challenge-cheers ! ! Oh yeah, by the way only place I could find the assassin was ascendant audio--no wonder I missed it in my research--ha ha --just kidding--I did have to be pointed there-thanks |
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Silver Member Username: RiskybPost Number: 377 Registered: Feb-06 | Not to be douche but, since when did the - become a period? It makes reading your post hard...to me atleast. That phoenix gold amp and assasin will be so much better than that pyramid junk. |
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