Running Fosgate 75HD Amp Indoors - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th October 2007, 01:42 PM   #1
Plundering the Planet From the Comfort of Home
diyAudio Member
 
DreadPirate's Avatar
 
Join Date: Jan 2006
Location: Northern Virginia, USA
Default Running Fosgate 75HD Amp Indoors

I'd like to run this amp on my bench with a set of 8 ohm speaks, though those specs are not listed:

http://ampguts.realmofexcursion.com/...te_Punch_75HD/

I do have a deep cell battery, but its probably pretty run down. I've read about setting this up with a car charger. Do I just hookup the car charger to the battery then jump from there to the power connections on the unit?

Any thoughts on how good this may sound for a home audio setup?
  Reply With Quote
Old 26th October 2007, 09:09 PM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Have you confirmed that the amplifier is in good working order?

If you haven't used it 'recently' (<very important), you need to power it up and make sure that both channels play cleanly.
  Reply With Quote
Old 28th October 2007, 07:04 AM   #3
diyAudio Member
 
Join Date: Oct 2001
Location: Brisbane, Queensland
Send a message via ICQ to junglejuice
So you want to use the Punch as a home amp, what do you intend to use as a source unit?
Plus the 8 ohm speakers will want to be quite efficient as the Punch75 would only put out somewhere in the region of 20 or so watts at 8 ohms stereo....
__________________
Do it once, Do it right!!!!!
  Reply With Quote
Old 28th October 2007, 02:17 PM   #4
diyAudio Member
 
Join Date: Aug 2005
Send a message via Yahoo to Mr. Old School
This is what I've been working on for the last couple of years.

Fully active system all 4Ohm speakers

Speakers:

tweters from MTX Black Gold series

mids from Lanzar DC Series and MTX Black Gold

subs from Monocar Raptor series.


Amps:

Lanzar Optidrive 4150

Autotek 300XI

Crossfire VR2000D


Head unit:

Rockford RFX 8140


Processors from Lanzar:

G2M

E30

X3

at the moment the box is a prototype but the sound is still amazing.

The power supply weighs in at 70 pounds and can put out a constant 240 Amps of current.



Click the image to open in full size.
[URL=http://g.imageshack.us/g.php?h=512&i=dsc00107xv1.jpg][IMG]

Click the image to open in full size.
Click the image to open in full size.

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.

Click the image to open in full size.
Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
Click the image to open in full size.
  Reply With Quote
Old 28th October 2007, 07:10 PM   #5
diyAudio Member
 
Join Date: Mar 2007
It is not ever a good idea to run a Lead/acid battery indoors. If you have an old computer laying around you can take the power supply out of it and use it. Using 8 ohm speakers are the wisest choice unless you are wanting to spend big money on a power supply.
If you do go the computer power supply route, let us know and we can let you know what you have to do to get it connected. We will need to know if it is an AT or an ATX supply.
__________________
If it ain't broke Don't fix it
  Reply With Quote
Old 29th October 2007, 04:01 AM   #6
diyAudio Member
 
Join Date: Oct 2001
Location: Brisbane, Queensland
Send a message via ICQ to junglejuice
Quote:
Originally posted by I Am An Idiot
It is not ever a good idea to run a Lead/acid battery indoors. If you have an old computer laying around you can take the power supply out of it and use it. Using 8 ohm speakers are the wisest choice unless you are wanting to spend big money on a power supply.
If you do go the computer power supply route, let us know and we can let you know what you have to do to get it connected. We will need to know if it is an AT or an ATX supply.
Firstly computer power supplies are not regulated so they won't actually provide any real current and maintain 12 volts.
Secondly why would you bother, you firstly need to bring mains voltage down to 12 then step it back up again just to drive the speakers which seems totally pointless and wasteful when a home amp will do the same job with far less waste and less heat.
Thirdly I know that I wouldn't want a car battery in the house with all the associated fumes and ongoing costs.
__________________
Do it once, Do it right!!!!!
  Reply With Quote
Old 29th October 2007, 06:30 AM   #7
diyAudio Member
 
Join Date: Apr 2003
Location: Portland,Oregon
Blog Entries: 4
Send a message via AIM to DigitalJunkie
SLA's are sealed,and won't vent gasses into the house (under normal conditions)


I rewound an old Microwave Oven Transformer (MOT) to use as a 12V supply.

http://www.users.qwest.net/~ptaylor/...MOTPSpage.html

I should update the page someday,but I'm lazy.
  Reply With Quote
Old 29th October 2007, 06:57 AM   #8
diyAudio Member
 
Join Date: Oct 2001
Location: Brisbane, Queensland
Send a message via ICQ to junglejuice
Quote:
Originally posted by DigitalJunkie
SLA's are sealed,and won't vent gasses into the house (under normal conditions)


I rewound an old Microwave Oven Transformer (MOT) to use as a 12V supply.

http://www.users.qwest.net/~ptaylor/...MOTPSpage.html

I should update the page someday,but I'm lazy.
SLA's are even more expensive just to do the job of a home amp....
__________________
Do it once, Do it right!!!!!
  Reply With Quote
Old 29th October 2007, 08:37 AM   #9
Clipped is offline Clipped  Thailand
diyAudio Member
 
Join Date: Mar 2005
Location: home
Send a message via MSN to Clipped
i have a couple of old school non HD versions of the punch 75

these specific amps wont run off of some battery chargers, chargers cant provide the current fast enough for these amps,
you'll have to get a dry cell battery or something....maybe a UPS will work , those have 12 volt batts inside.

all you really need to run that amp is a 12vdc 18ah battery, around $30... and hook it up to the charger.

on the battery alone youll get about 30 minutes full volume playing full range on a 15" speaker...or... just turn on the charger when your playing.

cut out the sub bass and the battery will last longer, that way you wont have to turn on the charger and have the ripple come through the speakers.

i use a battery charger and SLA for my test bench...
  Reply With Quote
Old 29th October 2007, 12:31 PM   #10
Clipped is offline Clipped  Thailand
diyAudio Member
 
Join Date: Mar 2005
Location: home
Send a message via MSN to Clipped
almost frgot, you ma want to hook up a capacitor between the charger and battery to filter the ripple coming from the charger.

i
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
FosGate 400a4 Gusel9 Car Audio 0 16th June 2009 04:30 PM
What advantages running ported midbass if you are running a sub? mitchyz250f Multi-Way 3 20th May 2008 02:34 PM
fosgate t2's ba109296 Swap Meet 0 5th February 2006 08:37 PM
fosgate PR 250 Questions greatbigjohnson Car Audio 1 25th February 2005 03:14 PM
how can i use my car amp indoors on 110volts? tomithy83 Parts 12 8th June 2004 03:48 AM


New To Site? Need Help?

All times are GMT. The time now is 02:59 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2