• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Powering subwoofer - need some clarification.

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
is your cyrus amp have just a plain stereo RCA output? how about connecting it to the plain output (if it has) to slave your secondary sub woofer amp.?
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
I does labelled tape out but the volume doesnt change on that as its for recording. Thats why I think that amp is good with its high level in. The TEAC is currently fed from the headphone out on cyrus fine and works perfectly minus the right channel. Noticed that you can hear a fair bit of noise from the teac as it has to work at higher volume. Cant wait to have a play with that amp :)
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit


I enjoyed Drawing LOL
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Yeah thats how it looks, using the headphone out like iv said controls the volume in sync with speaker volume.
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
try to eliminate amp series connection, it increases distortion levels, or maybe try the headphone output, the problem of it is, the moment you plug the headphone plugs, it mutes the main amp. what i did on mine is, ived directed the internal switch inside the headphone jack itself, (there`s a tiny switch inside of it that mutes the main amp. everytime a plug is inserted) in that way i can still use the master volume control of my mini component and utilizing also the main power amp. with the built in speakers on my mini component.
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Well thats the beauty about the cyrus amp, having the headphones plugged in doesnt mute the speakers :)
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
Well thats the beauty about the cyrus amp, having the headphones plugged in doesnt mute the speakers :)

Well you`re done man, that`s it :rockout:

7 more post to the 5 star LOL
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Here are some pics, its not fully sanded down or painted yet. :)






The box is still around 30 litres but different shape, luckily it was pre-made from a desk I made in school few years back and the box sections for the draws is 30 litres, so cut the holes required and screw and glued it together with carpet underlay and some foam padding from an old arm chair.
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Yeah they're brilliant little things and with the sub have abit more meat to the sound, they are actually M30i :)
 

Wile E

Power User
Joined
Oct 1, 2006
Messages
24,318 (3.81/day)
System Name The ClusterF**k
Processor 980X @ 4Ghz
Motherboard Gigabyte GA-EX58-UD5 BIOS F12
Cooling MCR-320, DDC-1 pump w/Bitspower res top (1/2" fittings), Koolance CPU-360
Memory 3x2GB Mushkin Redlines 1600Mhz 6-8-6-24 1T
Video Card(s) Evga GTX 580
Storage Corsair Neutron GTX 240GB, 2xSeagate 320GB RAID0; 2xSeagate 3TB; 2xSamsung 2TB; Samsung 1.5TB
Display(s) HP LP2475w 24" 1920x1200 IPS
Case Technofront Bench Station
Audio Device(s) Auzentech X-Fi Forte into Onkyo SR606 and Polk TSi200's + RM6750
Power Supply ENERMAX Galaxy EVO EGX1250EWT 1250W
Software Win7 Ultimate N x64, OSX 10.8.4
Take the speaker down from there, and place it firing directly into the corner of the walls, about 1ft back.
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Yeh I know I had it up there to see what difference there was from carpet to something solid. Got it under the desk at the moment.
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Well my new amp has arrived, and it sounds fantastic, and very powerful :D, its all painted up now so here are some pics:








The power supply is an old Seasonic with a physical power switch, I opened it up and un-soldered all the other rails so there are no wires hanging around.
 
Joined
Jan 2, 2009
Messages
9,899 (1.78/day)
Location
Essex, England
System Name My pc
Processor Ryzen 5 3600
Motherboard Asus Rog b450-f
Cooling Cooler master 120mm aio
Memory 16gb ddr4 3200mhz
Video Card(s) MSI Ventus 3x 3070
Storage 2tb intel nvme and 2tb generic ssd
Display(s) Generic dell 1080p overclocked to 75hz
Case Phanteks enthoo
Power Supply 650w of borderline fire hazard
Mouse Some wierd Chinese vertical mouse
Keyboard Generic mechanical keyboard
Software Windows ten
Nice job man!

I've been looking for tutorials EVERYWHERE to turn computer PSU into amp PSUs.

I don't suppose you'd be willing to help me out? :D

PSU's are easy to come by and it means I can get a amp with high w rather then an indoor amp with less power.
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Nice job man!

I've been looking for tutorials EVERYWHERE to turn computer PSU into amp PSUs.

I don't suppose you'd be willing to help me out? :D

PSU's are easy to come by and it means I can get a amp with high w rather then an indoor amp with less power.

Sure of course. It's fairly easy to get a PC PSU powering a car amp. It's best to know what power draw (Amps) the amplifier will take.
I used a regulated power supply with voltage control and Amp gauge and saw the amplifier drew less than 2A at the volume I normally use, so make sure the PSU you choose has the required Amp rating on the 12V rail.

Also check the voltage on the 12V rail is in the operating range for the amplifier.... First PSU I tried had around 10V on the 12V line which was terrible and the amp didn't power up.

Next bit is simple case of gathering up a couple of 12V and Ground cables (yellow and black) and pairing them together in parallel.

For an ATX PSU to start it you need to short the green and black wires on the ATX 20-24pin header, or if it's an old one like mine just power it up.

Edit: Also allot of car amplifiers have ignition sense terminals. I just put a jumper from the 12V to the sense terminal so it turns on straight away.
Edit2: It might be wise changing the fuse on the amplifier to the rated Amps on the 12V on the PSU or have it slightly less. This will protect the amplifier and your PSU and blow the fuse first, not the equipment. (Iv yet to do this so not going to run it at full tilt yet :p )
 
Joined
Oct 26, 2006
Messages
1,977 (0.31/day)
Location
Fremont, Ohio
System Name The Darkside
Processor Ryzen 5 3600
Motherboard ASRock B550 Extreme4
Cooling OEM
Memory 16gb G.Skill Fortis
Video Card(s) MSI Seahawk 1070
Storage 500gb Mushkin Pilot NVMe
Display(s) 55" Samsung 4k UHD
Case Corsair iCue 465X RGB
Audio Device(s) Onboard Reltek
Power Supply Corsair AX860i
Software Windows 10
Yea a amp from a car dont need to be a high wattage, trust me. I have a 50W Rockford on my 10" sub and it blasts me outta my chair. I changed it to put my amp back in my car lol, way too powerful for this and its a 240W!!
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Yeah after having it running for a little while now I have come to the conclusion that some songs etc are abit too loud. So I've bought an attenuator for earphones for when on the plane, this will hopefully allow me more control over the sub amp as I currently cant turn it any lower. I dont need to do it by much but its enough to get on my nerves in some cases.

Overall though I'm ver happy with it :D
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
you did not bridge the tapping on the out bro? I think it only output the left channel on your pics:)
I think the bridge tapping on that is on the two outer sides of the amp. speaker connector
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
Nah there's no need. I have it on the mode where Left and Right are mixed then amplified so it doesn't make any difference. I adjusted the balance on my sound card to left and right and it comes through fine. :) the attenuator didn't work as planned so sending that back next week.
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
on mine i hide my amp supply inside my box:laugh: I like hard modding though, its only a 10 amp.transformer, I bolted it inside, mine`s also a 12V car sub but I hard mod it to have a 110VAC supply like this,



figure 2 is a typical DC-to-DC split supply system on a car amp.

I really love drawing circuits on paint :laugh:
 
Joined
Jun 12, 2006
Messages
399 (0.06/day)
System Name Custom AMD FX
Processor AMD FX 8320 @ 4.62GHz (225MHz Bus Speed)
Motherboard Gigabyte GA-970A-UD3P (1.0)
Cooling Corsair Seidon 240V in Push Pull
Memory 16 GB DDR3 (4x4GB)
Video Card(s) Sapphire NITRO+ Radeon RX 470 8GB
Storage 120GB ADATA SP550 + 1TB WD Black
Display(s) AOC I2369VM 23" 1920x1080
Case Phanteks Eclipse P400s Black & Red
Audio Device(s) Creative E-MU 0202 USB
Power Supply Corsair CX600M
Mouse Logitech G700
Keyboard Perixx PX-1000
Software Windows 10 Pro N x64
I would have built it in but its quicker this way as I have a job coming up so needed to get it out the way, also buying the components to do it would be an extra cost so just thought i'd do it the free way.

Also the amp has different modes.... Standard stereo, mono (bridged over L+ and R- terminals, which only uses the Left channel) and mixed where left and right are mixed then amplified for both Left and Right mono.... so I could have another sub wired up hehe :p
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
BTW nice build man:toast:
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
I would have built it in but its quicker this way as I have a job coming up so needed to get it out the way, also buying the components to do it would be an extra cost so just thought i'd do it the free way.

Also the amp has different modes.... Standard stereo, mono (bridged over L+ and R- terminals, which only uses the Left channel) and mixed where left and right are mixed then amplified for both Left and Right mono.... so I could have another sub wired up hehe :p

:laugh:another sub FTW:rockout::laugh:
 

KH0UJ

New Member
Joined
Feb 22, 2009
Messages
361 (0.07/day)
Location
Cebu City Philippines
System Name Air Cooled Gaming / Shop PC
Processor AMD Athlon II X2 Regor 250
Motherboard Asus M4A78 plus
Cooling Air Cooled (Upward Airflow)
Memory Corsair Dominator PC-8500 2GB 1066 MHZ
Video Card(s) Palit GTS 250 E-Green
Storage Hitachi Deskstar 160 GB
Display(s) Samsung EX2020 20 inch LED
Case Wooden Case Painted and Modified
Audio Device(s) Realtek ALC887 8 Channel (Onboard)
Power Supply Orion HP 585D X2 Dual Modified PSU (585W+585W)
Software Windows XP SP3 / Windows 7 32 bit
There`s a saying way back on my modding days bro:laugh:

"IF THE MUSIC IS TOO LOUD THEN YOU`RE TOO OLD"

:laugh: crazy client:laugh: he actually put it in his wind shield bro:roll:
while roaming around with his car intimidating every granny in town with a full blast crawling bass and triggering all the nearby parked alarmed cars in the parking area, I think that guy is nuts.
 
Last edited:
Top