audio set-up for beginners [continued]

**markygy** · May 6th, 2016 02:34 PM

Originally Posted by jmpet626

Ano ano po mga difference ng mga deadening products sa market natin? Quote kasi sa isang shop sa SF ko 5k for 2 doors. While yung Acoustipad 2k for 2 doors. Kung DIY nga yung Acoustipad 250 lang per 2ft x 3ft sheet.

Also ano po mas recommended. Naka amplify kasi yung front and rear speakers ko. Much better ba kung di ko na gamitin yung HPF sa amp on front and rear channel at sa HPF na lang ng Pioneer 2850bt ang gamitin?

Tanong mo sa seller if the more expensive type has a aluminum layer. Yun mga generic type like the acoustipad you mentioned does not have aluminum layer. Mas malinis at mas heat resistant ang mga butyl rubber type deadeing material that has a aluminum layer.

With regards on using the filters on your amp or HU. You neither use one of them since your speakers comes with passive filters already. Just turn off the HPF on the HU and set the the filters of the amp to off or all pass. If the amplifier does not come with the option of setting the filters to off or all pass, leave the settings to HPF.

**jmpet626** · May 7th, 2016 08:20 PM

Originally Posted by markygy

Tanong mo sa seller if the more expensive type has a aluminum layer. Yun mga generic type like the acoustipad you mentioned does not have aluminum layer. Mas malinis at mas heat resistant ang mga butyl rubber type deadeing material that has a aluminum layer.

With regards on using the filters on your amp or HU. You neither use one of them since your speakers comes with passive filters already. Just turn off the HPF on the HU and set the the filters of the amp to off or all pass. If the amplifier does not come with the option of setting the filters to off or all pass, leave the settings to HPF.

Yung Acoustipad may variant siya na may aluminum layer and meron yung all black lang na material. I chose yung may alumnum layer and consume 2.5 sheets per door.

Thanks, will try this later. Current setup ko is naka On HPF sa HU front and rear and naka All Pass sa Amplifier. Front seps ko pala is Focal PS 165F and Sound Magus C160 4 channel amp and pioneer coax for the rear.

**aprilboyidol** · May 7th, 2016 10:00 PM

what happens if you run an 8 ohm speaker with an amp with a 4 ohm output

**CVT** · May 7th, 2016 10:32 PM

Originally Posted by aprilboyidol

what happens if you run an 8 ohm speaker with an amp with a 4 ohm output

Not a maximum power transfer...

Assuming 12v, power on the speaker will be 64/8 or 8W... Vs 4 ohm speaker with power of 36/4 or 9W...

Should be "okay"

**markygy** · May 8th, 2016 11:35 AM

Originally Posted by aprilboyidol

what happens if you run an 8 ohm speaker with an amp with a 4 ohm output

The 8ohm speaker will recieve half of the rated power output the amp gives *4ohms. If for example the amp gives 100watts *4ohms, a 8ohm speaker will only get 50watts. This is because a 8ohm speaker has double the RESISTANCE of a 4ohm speaker.

**markygy** · May 8th, 2016 12:38 PM

Thanks, will try this later. Current setup ko is naka On HPF sa HU front and rear and naka All Pass sa Amplifier. Front seps ko pala is Focal PS 165F and Sound Magus C160 4 channel amp and pioneer coax for the rear.[/QUOTE]

Yes bro try to notice the performance of the midbass after.

**red_one** · May 8th, 2016 01:34 PM

Speaker impedance is not fixed. It changes with frequency. An 8 ohm speaker may be 8 ohms now, but could change to 2 ohms in an instance and 16 ohms in another instance. Same goes with 4 ohms speakers.

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**aprilboyidol** · May 8th, 2016 10:41 PM

may negative effect po ba sa amp or speaker kapag ganun setup magkaiba ohms .... salamat

**ninjababez** · May 9th, 2016 10:14 AM

Originally Posted by aprilboyidol

may negative effect po ba sa amp or speaker kapag ganun setup magkaiba ohms .... salamat

Nope normal speaker characteristic yan. Wag lang sobra underpowered yung speaker for a long time. Kung normal listening level, walang problem in most cases.

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**jhnkvn** · May 13th, 2016 02:19 PM

Originally Posted by ninjababez

Nope normal speaker characteristic yan. Wag lang sobra underpowered yung speaker for a long time. Kung normal listening level, walang problem in most cases.

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There's nothing wrong with a speaker being underpowered. What's dangerous is when you do the opposite -- overpowering (aka turning the volume knob as if you're trying for 180dB) as it leads to mechanical failures (ex. burnt coils, etc.)

What's dangerous is an uninformed person having a low-wattage amplifier. More often than not, he's turning the volume all the way up and then damaging the poor speaker in the process.