Help in Tuning audio

**bigpapa** · August 5th, 2011 12:32 AM

Mga Sirs, Do low frequencies need to pass the EQ or it doesn't matter and just tap straight from the sub preout of the HU?
I want to use the sub control feature of the HU, but sadly my trunk mounted EQ only accepts a pair of rca's (input). The EQ however has 2 pairs of rca outputs. My sub amp doesn't have a remote bass knob hence the reason for buying an HU with sub control capability. Currently, both amps are connected to the EQ but I need control of the sub volume since not all music require bass. In short, will sound quality suffer if the low frequencies are not tweaked? Baka mapagod lang kasi ko sa paglatag ng additional signal wires para makontrol ko lang yung sub, tapos sasagwa naman pala tunog.

**yapoy86** · August 5th, 2011 09:09 AM

no need padaanin sa EQ yung sub mo.. may sub out ka na nga eh... yan EQ mo gamitin mo na lang sa co ax speakers mo.. personally ayoko na ng separate EQ kasi most modern HU like pioneer may mga EQ controls na din.. mas ok pa ang crossover kasi separate ang controls ng high, mid, and low frequencies.

**bigpapa** · August 5th, 2011 11:15 AM

Originally Posted by yapoy86

no need padaanin sa EQ yung sub mo.. may sub out ka na nga eh... yan EQ mo gamitin mo na lang sa co ax speakers mo.. personally ayoko na ng separate EQ kasi most modern HU like pioneer may mga EQ controls na din.. mas ok pa ang crossover kasi separate ang controls ng high, mid, and low frequencies.

Thanks sa quick reply bro. Yung EQ ng Pioneer e puro preset (rock, pop, hall, etc.). Di pwede pumili ng exact frequencies na gusto mo timplahin. Low end lang kasi. Akala ko pag may sub control na e maganda na rin EQ.

Mukhang gagawa pa ko cable, then pag di maganda tunog, papagawa na lang ako ng bass knob/control para ikabit between the xover and sub amp.

**tsikotshop** · August 6th, 2011 11:27 AM

Yes sir, pag meron kang EQ drive, mas maganda make it pass trough there, speacially low end lang head unit mo, anu po ba yung EQ nyo, anu po yung output, front and rear, or front and sub output, ilang band po ba yan, 8band or 16 band? marami po kase klase e. Pag kase galing sa head unit lang, pag sinabi mo kase na low end lang, i think 2 volts lang sub output ng head unit mo, and, hindi mo masyado ma filter yung mga low frequency cut off unlike using an eq drive na merong 16 band or 36 band equalizer, para din po kaseng signal amplifier ang equalizer e, it boost the frequency na kelangan in tuning significant figures in audio system, lalo na in car audio, every side has a different curves and responses..

**bigpapa** · August 6th, 2011 02:24 PM

Originally Posted by tsikotshop

Yes sir, pag meron kang EQ drive, mas maganda make it pass trough there, speacially low end lang head unit mo, anu po ba yung EQ nyo, anu po yung output, front and rear, or front and sub output, ilang band po ba yan, 8band or 16 band? marami po kase klase e. Pag kase galing sa head unit lang, pag sinabi mo kase na low end lang, i think 2 volts lang sub output ng head unit mo, and, hindi mo masyado ma filter yung mga low frequency cut off unlike using an eq drive na merong 16 band or 36 band equalizer, para din po kaseng signal amplifier ang equalizer e, it boost the frequency na kelangan in tuning significant figures in audio system, lalo na in car audio, every side has a different curves and responses..

TY sir Tsikotshop. Oldschool lang kasi mga gamit ko. LA sound 1026 13 band for each channel (26knobs), it has 1 pair input and 2 pairs output (front/rear). Audiocontrol 4xs xover, Audiocontrol system 90 model 20 amp and a Single lang na 12" targa sub in a sealed box. I'm afraid na pag ginamit ko yung xover feature ng Pioneer e baka di maganda ang bayo and wala kong way na matimpla sya since di na sya dadaan ng EQ. I've heard Targa subs kasi have the reputation for having a stiff suspension at matakaw sa box. I've decided not to use the sub control ng Pioneer at gumawa na lang ako ng sub control that will go between my Xover and sub amp. I tested my DIY bass knob sa amp ng High's ko and ok naman. I hope it works with my sub as well. Thanks again sir Tsikotshop, at least I know now na dapat talaga idaan sa EQ both hi and lo frequencies. (And sayang yung mga bakanteng rca's kung di gagamitin) hehe.

BTW overkill ba kung gagamit ako ng line-driver? Balak ko kasi hingin yung Phoenix gold na line driver ng friend ko. yung pinaka-basic na model lang sya.

**tsikotshop** · August 6th, 2011 08:57 PM

Originally Posted by bigpapa

TY sir Tsikotshop. Oldschool lang kasi mga gamit ko. LA sound 1026 13 band for each channel (26knobs), it has 1 pair input and 2 pairs output (front/rear). Audiocontrol 4xs xover, Audiocontrol system 90 model 20 amp and a Single lang na 12" targa sub in a sealed box. I'm afraid na pag ginamit ko yung xover feature ng Pioneer e baka di maganda ang bayo and wala kong way na matimpla sya since di na sya dadaan ng EQ. I've heard Targa subs kasi have the reputation for having a stiff suspension at matakaw sa box. I've decided not to use the sub control ng Pioneer at gumawa na lang ako ng sub control that will go between my Xover and sub amp. I tested my DIY bass knob sa amp ng High's ko and ok naman. I hope it works with my sub as well. Thanks again sir Tsikotshop, at least I know now na dapat talaga idaan sa EQ both hi and lo frequencies. (And sayang yung mga bakanteng rca's kung di gagamitin) hehe.

BTW overkill ba kung gagamit ako ng line-driver? Balak ko kasi hingin yung Phoenix gold na line driver ng friend ko. yung pinaka-basic na model lang sya.

Di naman po magiging overkill kapag gumamit ka pa nung overdrive or line driver e, you just magnifying the signal for more clearer picture, wag lang po sosobra sa limit, just below the clipping signals, ok yan, lalo na Phoenix gold, claro ultimo yan sir, he he.