audio set-up for beginners [continued]

**jhnkvn** · April 16th, 2013 11:53 PM

Originally Posted by renzo_d10

Hi John,

Ask ko lang ano, stock pa ba HU mo?

Sent from my 3210 using Tapatalk HD Premium

Yep. I'm building my system on a quest to debunk some myths sa local car audio industry natin. Like how you need an aftermarket head unit to win

**monty_GTV** · April 17th, 2013 01:23 AM

Originally Posted by jhnkvn

Yep. I'm building my system on a quest to debunk some myths sa local car audio industry natin. Like how you need an aftermarket head unit to win

sir jhnkvn is building a monster

i saw his project posted in KAC and it looks very promising. with a pair of focal FPS amps and a pair of audison VRx amps in his sonata's trunk, just imagine the power he is going to supply to his system

**jhnkvn** · April 17th, 2013 03:46 AM

Monster ba? Even I'm worrying about my stock alternator nowadays

My amplifiers are old na.. the Audisons are since 1999 pa

but the good thing about good amplifiers is like buying a pair of great shoes. You could say they're an investment. Not every amplifier is stable all the way to 1 ohm. And I "require" the amplifier as my 6KRX3 midbass is... fussy about its impedance load. How did I get that information? By emailing Focal's distributor in the United States --- Orca.

As for the power, a total of 1830W (110x4, 120x4, 350x1, 560x1) at 4ohms I guess?

Let's not get into 1 ohm loads, since the amplifier on the left (above picture) is capable of 2000W at 1 ohms :naughty2: how much is 2kW? Uhh... electricity load of two 1HP aircons I guess.

**userfriendly** · April 17th, 2013 11:33 AM

how much is 2kW? Uhh... electricity load of two 1HP aircons I guess.

Actually more. 2HP is only 1,492 watts. 2KW is closer to 2.68 HP. Your 1830 watts is already 2.45 KW!

You have impeccable taste in amps and a car audio guru!

**brooom** · April 17th, 2013 03:56 PM

Mga sir magkano ba pricing ngayon ng re audio srx or se x 10inch. At ano bagay na amp para dito. thanks

**TheMikProject** · April 18th, 2013 11:00 PM

Originally Posted by jhnkvn

*TheMikProject

Aha, alright. More or less alam ko na why.

No worries, your amplifier does not have any fader controls on it :D If your installer is Mickey, then don't fiddle with the gain control anymore. It isn't a volume knob as most newbies use it for. If the sound is being steered towards the back, just use your fader.

What Mickey says is true. If you're looking for bass, nothing beats the displacement a subwoofer can provide. To provide the equivalent decibel output of a conventional 12" sub, you need to throw a huge amount of power to the midbass. Although not directly, I usually tell newbies that a typical ratio of 100W of subwoofer output equates into 500W of midbass at the low frequencies of 40-50hz. That's how efficient a larger cone area does in producing bass.

The reason why the Infinity has less bass than Blaupunkts would probably be because of your crossover frequency. Knowing Mickey, he'll be crossing the Infinity separates quite high. The typical setup has a cutoff of 80hz but depending on your situation, he might be cutting them higher at 100hz. This will explain your "lack of bass" feeling compared to the Blaupunkts which is probably set a bit lower like 70hz (trust me, 10hz is a lot). For what it's worth, most sound systems need to at least hit 50hz for them to describe the bass as "fulfilling".

But don't immediately charge into Mickey's place and start demanding a refund. This is because he's correct. The most sensible way is to really buy a subwoofer (and an amplifier, wirings, box, etc. that goes with it) so you can get your "bass down low" feeling fulfilled. The reason for the high cutoff is because not all separates are created equal.. this is where the "you get what you pay for" scenario comes in.

Your typical midbass purchased from separate components would usually have a short voice coil, a small motor, and low power requirements - everything your typical budget minded consumer needs because they're unwilling to pay five digits for a speaker. Mickey sets the LPF high to protect your speakers because your everyday consumer would crank the system and drive the midbass hard. The problem with this is that the speaker driver itself would reach their mechanical limits quickly and.. poof.. there goes a fried voice coil, a misaligned motor, etc.

Thank you so much for helping a newbie like me understand these things! I really appreciate all the help that you gave.

I guess I'll just find a good budget subwoofer then.

**Troy Inovero** · April 19th, 2013 07:37 PM

*jhnkvn idol what can you say about the Pioneer AVH-P3450DVD and Pioneer AVH-X4550DVD?
2DIN na gusto ko ngayon e, nagbago na isip ko. Saka anung shop ang mairerecommend mo saken? Thanks.

Pioneer Philippines

**jhnkvn** · April 20th, 2013 12:45 AM

Originally Posted by Troy Inovero

*jhnkvn idol what can you say about the Pioneer AVH-P3450DVD and Pioneer AVH-X4550DVD?
2DIN na gusto ko ngayon e, nagbago na isip ko. Saka anung shop ang mairerecommend mo saken? Thanks.

Pioneer Philippines

Looks the same. As with Pioneer's models, the X-series are the newer ones which also means they're more pricey. Personally, kung malaki yun difference ng dalawa, doon ako sa P3450. If they're equal in price, ede doon ka na sa masbago.

As for shops, most of those in Banawe are competent shops naman. It's hard to go wrong just picking a shop that caught your eye (ex. maganda yun babae sa shops kaya doon ka magpapagawa) Changing of head unit is not an advanced technical skill after all

**jhnkvn** · April 20th, 2013 12:47 AM

Originally Posted by brooom

Mga sir magkano ba pricing ngayon ng re audio srx or se x 10inch. At ano bagay na amp para dito. thanks

Can't help you with price quotes. However, I do suggest matching the amplifier to a mono amplifier that is at least 1 ohm stable if you plan to drive it hard. No such thing as brand matching really.. a speaker driver will only care on how much watts is being fed into them.. it won't care if it's watts coming from Brand A or Brand B.