Pass Amp run from 12 volt Battery - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

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 16th December 2016, 09:19 AM   #1
diyAudio Member
 
Join Date: Oct 2016
Default Pass Amp run from 12 volt Battery

Hi, I have been looking at diving into the Pass club for a while. But am a active battery (off grid) Hi-Fi user.

So my current main listening system T/T, Phono, Pre & amp all run off of 14VDC SLA (7amp) batteries.

I want to keep to the 14VDC batteries as using the in parallel to create 28 volts is a pain in the A** to charge.

So if I use 2x14VDC batteries & a suitable 12 VDC booster board
1500W 30A DC Boost Converter Step-up Power Supply Module In10~60V Out 12~90V | eBay
as now sold on E/B for car amps. I can adjust the voltage the amp chosen amp. I was thinking of a Zen amp that required 50VDC.
  Reply With Quote
Old 16th December 2016, 09:48 AM   #2
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
cheap enough to try
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 17th December 2016, 07:42 AM   #3
diyAudio Member
 
Join Date: Oct 2016
Default How many hours listening

Anyone give a guesstimate an How many hours listening I would get from powering a Zen V4 with 2 x 7amp SLA batteries
Thanks for your indulgence with a newbie
  Reply With Quote
Old 17th December 2016, 08:34 AM   #4
diyAudio Member
 
Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
Are you asking about using 24v to power the Zen4 ? In that case you would
probably just get ~ 10w output and drain your battery s in ~ 1 hrs . A while
back I ran a very small SOZ off sla batteries and it was a pain in the .... But if
you do have 24v dc you might look at the Amp Camp Amp . It's specified for 20v
but would probably do fine at 24v .
  Reply With Quote
Old 17th December 2016, 10:09 AM   #5
Zen Mod is offline Zen Mod  Serbia
diyAudio Member
 
Zen Mod's Avatar
 
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
Originally Posted by gigigirl View Post
Anyone give a guesstimate an How many hours listening I would get from powering a Zen V4 with 2 x 7amp SLA batteries
Thanks for your indulgence with a newbie
find what's dissipation per channel of amp you intend to use

double that for stereo

then divide Watts (VA) of dissipation with battery voltage (presumably 12V)

you'll get instantaneous current ...... which is pretty close to Ah , if you think of consumption

add 10-20% (losses in wires , losses in DC/DC converter) to that , and you're in ballpark
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
  Reply With Quote
Old 17th December 2016, 11:21 AM   #6
diyAudio Member
 
Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
By the way the 7 AH rating on that battery is for low discharge currents
that is if you are just drawing 1 amp it will last for about 7 hrs but if you
were drawing 7 A it would discharge in closer to 45 min.
  Reply With Quote
Old 17th December 2016, 01:06 PM   #7
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
Good idea, I'm also had similar thoughts, but for trouble free operation I think you must use something like this:
Forklift Batteries, Industrial Batteries for Material Handling
Car batteries is not good, however these are designed for big current consumption (starter motor) but for a short time.
SLAs also don't good, these are designed for long discharge time, but for relatively low power consumption.
So forklift batteries would be good.
Or there are smaller ones in ride-on scrubber dryers:
Dyno Europe
All of these batteries quite pricey.
I canceled my plans in this direction.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote
Old 17th December 2016, 01:21 PM   #8
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
Perhaps a solar panel system would be good.
I go to work days, while solar panels charge the batteries.
And in the evening these are discharged by my Good-Old-New-Aleph.
My good old-new Aleph
I'm afraid, these were discharged so quickly, Aleph can't reach his working temperature.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  Reply With Quote
Old 17th December 2016, 01:42 PM   #9
diyAudio Member
 
Join Date: Jan 2002
Location: Tyrone Ga. U.S.A.
One important factor is how much power do you need ?
  Reply With Quote
Old 17th December 2016, 02:44 PM   #10
Gyuri is offline Gyuri  Hungary
diyAudio Member
 
Gyuri's Avatar
 
Join Date: Nov 2003
Location: Budapest
The most important factor is my wackiness.
__________________
Those who would have deserved the life they are all dead already. "Oh, my dead dears!" - Captain Cat
  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
Can a car amplifier run off of a 9 volt battery? realflow100 Car Audio 16 22nd March 2017 09:09 PM
DD-Z2 wanting to run this amp at 16 volt and charging 17.5-18 volt is it capable? Bills amps Car Audio 3 14th September 2015 11:49 AM
12 volt /5 amps off mains vs 12 volts/3 amps off battery power for mini-amp? Jaxhouse Power Supplies 3 20th June 2014 11:44 AM
12 volt battery voltage step up ThSpeakerDude88 Power Supplies 3 2nd October 2005 03:08 AM


New To Site? Need Help?

All times are GMT. The time now is 03:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki