Battery Wiring Diagram for AMP4 and TEAC A-L700P

newbie23 · 8th March 2007, 02:34 AM

Since there have been so many questions on how to hook up two batteries to the AMP4 and Teac A-L700p amp, I thought I would post a diagram that I drew that has worked out well for my Teac tripath amp. In order to run the batteries in series and charge in parallel, a 3DPT switch is necessary. The diagram is pretty primative, but it is the best I can do without access to any schemetic software. I hope this helps the people that have asked in the past and have not gotten a response.

tripathdude · 11th March 2007, 10:02 AM

This seems like it would work, but can anyone confirm this before try this on my Teac amp? I don't want to fry my chip or blow up a battery.

TripathRocks · 23rd August 2007, 08:11 PM

I have tried out the circuit above for my TEAC amp and nothing blew up. There is one issue though. The problem I am running into is the regulator reads negative 0.6 volts. When I disconnect ground from my 4 pole Jensen capacitor for the 25v line, then I get 5 volts fine from the regulator. Could someone give some pointers into how to fix this problem?

TripathRocks · 24th August 2007, 01:08 AM

I figured out the problem. Boy does this amp sound awesome with the Jensen PIO caps and Jensen four pole cap. I realized the problem was simply connecting the negative off the cap to the main ground line. Tripath said to keep the 5v and 24v ground lines separate, but with a battery supply this is impossible as far I know. The grounds need to be connected. The circuit is safe and sound. Thanks Newbie23 for the schematic.

dwk123 · 24th August 2007, 01:32 AM

For the record, many battery chargers have completely floating outputs. In this case, you can use two chargers and avoid the need to switch from series to parallel and back. Simply connect one charger to each battery, and run the chargers from a power strip which you turn off during listening.

I did this with a +/- 24V supply I put together for a UCD project that is still materializing - 4 chargers is a bit pricey, but I knew that without the 'one switch' charging option the setup would be way too inconvenient.

I still have the 4x33aH agm batteries though, and trying battery power into my AL700P is something I need to try.

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11th March 2007, 10:02 AM	#2
tripathdude diyAudio Member Join Date: Mar 2007	This seems like it would work, but can anyone confirm this before try this on my Teac amp? I don't want to fry my chip or blow up a battery.

23rd August 2007, 08:11 PM	#3
TripathRocks diyAudio Member Join Date: Aug 2007	I have tried out the circuit above for my TEAC amp and nothing blew up. There is one issue though. The problem I am running into is the regulator reads negative 0.6 volts. When I disconnect ground from my 4 pole Jensen capacitor for the 25v line, then I get 5 volts fine from the regulator. Could someone give some pointers into how to fix this problem?

24th August 2007, 01:08 AM	#4
TripathRocks diyAudio Member Join Date: Aug 2007	I figured out the problem. Boy does this amp sound awesome with the Jensen PIO caps and Jensen four pole cap. I realized the problem was simply connecting the negative off the cap to the main ground line. Tripath said to keep the 5v and 24v ground lines separate, but with a battery supply this is impossible as far I know. The grounds need to be connected. The circuit is safe and sound. Thanks Newbie23 for the schematic.

24th August 2007, 01:32 AM	#5
dwk123 diyAudio Member Join Date: Feb 2002	For the record, many battery chargers have completely floating outputs. In this case, you can use two chargers and avoid the need to switch from series to parallel and back. Simply connect one charger to each battery, and run the chargers from a power strip which you turn off during listening. I did this with a +/- 24V supply I put together for a UCD project that is still materializing - 4 chargers is a bit pricey, but I knew that without the 'one switch' charging option the setup would be way too inconvenient. I still have the 4x33aH agm batteries though, and trying battery power into my AL700P is something I need to try.

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