This is my first topic on this forum and i read a lot of great things here.
I read a lot of tips and tricks about adding more DB's with simple things but i think those tips are only great for the specific car that is used and not for every car.
I do not own a DB meter so its hard to check if i get more DB's and its hard to test for me.
I just want to ask if there are any tips for me to gain more DB
I own a Renault clio RS which is a very little car
I own a Sinuslive monoblock from 3KW RMS at 2 ohm and this is coupled to 2x Resonant Engineering SX10 from 1000w rms per piece(dual 2 ohm)
Here is a picture of my enclosure:
The enclosure is made of 1inch MDF arround and 2 inch top plate.
The enclosure is tuned to 57Hz because of the car resonance frequency
I am using 2 batteries(2x Sonnenschein 56Ah)
My highest score is 146.8DB on the Termlab but this score was with my old enclosure didnt have the possibility to test with the new one.
posted
you better ask your questions on a dutch forum it is easier for me to answer and help
-------------------- POWER IS NOTHING WITHOUT CONTROL michel van wijk superstreet 1-2 no-wall 159.3 @ 66hz certified Posts: 921 | From: holland | Registered: Dec 2004
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posted
thanks for the offer, i will send you a PB on SYS forum;-)
just wanted to know how other people think about my install and if there is anything i should change.
Posts: 27 | From: Holland | Registered: May 2009
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posted
im not sure how someone can help you with out knowing what your box size, port size, and tuning is also what your cars resonant frequency is, and thats only just the start, have you tried moving the box around,subs back, forwards, or sideways. you could try using 45 degree angles inside the box. adding or removing port length. but if you do these changes you need a mic, you need to test everything!
the only thing i know that will increase your slp no matter what car you have is sound deadener, increasing your current voltage (battery or voltage regulator maybe to 14 volts or 16 volts) and adding more runs of power wire. although no one can tell you how much you might gain from these, ive never heard of some one going down in spl from these mods regaurdless of vehicle type!
Posts: 132 | From: Canada | Registered: Jun 2002
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posted
Use polyester resin to paint the box inside!!!
The car peaks at 57 hz or is this the tuning freq of your box?
The way i see it you cannot feel a db gain or loss without a meter. unless it is over a hole db...
What is the nominal impedance you play?
Are you going to compete or just want to drive and pound?
-------------------- Dbdragracing is not a sport... IT'S A CURSE! 2009 WF 5th place Posts: 433 | From: ATHENS GREECE | Registered: Oct 2003
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posted
OK...Try to tune the box lower atleast 4-5 Hz...the box should be tuned much lower than your car's peak freq...If i were you i would tune it to 40-42 Hz...If you want to play music you box freq is way too high...
Also you should take into account the Fs of the subs (from the T/S parameters...)Are these subs RE Audio?Normally the Fs is around 32Hz so you should fix the box close to that freq but that is just a general guide...Because of the nature of your car (small cabin high res freq...)40-42 hz is good for street bass and comps (bass race at least)
You can also lower the nominal impedance of the subs so that your amps can do more power,but don't go too low or you might destroy it Ask someone from SINUS if this amp can play at.5ohms...You can do this at comps where you need that extra power for a short period and for daily use keep it @ 2ohms to be safe...
-------------------- Dbdragracing is not a sport... IT'S A CURSE! 2009 WF 5th place Posts: 433 | From: ATHENS GREECE | Registered: Oct 2003
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-------------------- Dbdragracing is not a sport... IT'S A CURSE! 2009 WF 5th place Posts: 433 | From: ATHENS GREECE | Registered: Oct 2003
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my old enclosure was tuned to 36Hz and that made 146,8Db
i am going to watch at sunday what score i will get now with the new box.
the subs are RE SX10's i dont think the Amp will do 0.5Ohm because its already a coupled monoblock(2 SLA1500 coupled together) so internally it already runs at 0.5ohm
The enclosure is designed with winisd so it should be ok for these subs.
Posts: 27 | From: Holland | Registered: May 2009
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posted
If you play @ 2 ohms each amp sees 1 ohm.I have afriend here in greece and he uses the same amp...I will try to contact him and ask the potential of the amp.He runs an ORION HCCA 15" in a Pug 106
-------------------- Dbdragracing is not a sport... IT'S A CURSE! 2009 WF 5th place Posts: 433 | From: ATHENS GREECE | Registered: Oct 2003
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posted
Box is way to big for SPL in this car. A few years back we someone with the same car doing 149dB of 1200watts. System was: 1 NSB 90 up front. 1 DD M1 2 x DD 2512 subs in around 100L with 1 6" aeroport. Frequency was 59Hz I think.
But to know what really is louder, you need a termlab.
-------------------- Team DD Belgium - Dieter 2004: 153.2dB @ dB-Drag Street A certified 2005: 156,5dB @ dB-Drag Street A certified / 159.1dB @ IDBL Stock 1 worldrecord 2006:157.5 dB @ dB-Drag Street A certified 2007: 158.2 dB Worldrecord Street A / 158.3 dB @ dB-Drag Street A certified 2008: Benelux dB-drag judge Posts: 796 | From: Belgium | Registered: Sep 2003
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posted
but these subs are 10 inch so my score isnt as bad i think?
other enclosure where i get 146,8Db from was also this big only tuned lower.
but what you say is that the Freq of 57Hz should be ok? maybe flare the port a bit more would get 59Hz
Posts: 27 | From: Holland | Registered: May 2009
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posted
smaller box (about 1/2 the size of what you have now), 6" aero port (as it's easy to get the tuning bang on) tune to 40-45hz and work from there.
I have a clio with an 8" sub and 500watts doing 129.9 bassrace and thats tuned to 40hz
quote:Originally posted by Hardcore RS: but these subs are 10 inch so my score isnt as bad i think?
other enclosure where i get 146,8Db from was also this big only tuned lower.
but what you say is that the Freq of 57Hz should be ok? maybe flare the port a bit more would get 59Hz
Difference between 10" and 12" subs is only a few tenths of a dB and you are running a 3kw amp
-------------------- Team DD Belgium - Dieter 2004: 153.2dB @ dB-Drag Street A certified 2005: 156,5dB @ dB-Drag Street A certified / 159.1dB @ IDBL Stock 1 worldrecord 2006:157.5 dB @ dB-Drag Street A certified 2007: 158.2 dB Worldrecord Street A / 158.3 dB @ dB-Drag Street A certified 2008: Benelux dB-drag judge Posts: 796 | From: Belgium | Registered: Sep 2003
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