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Old 17th May 2014, 04:16 PM   #1
cleonjr is offline cleonjr  United States
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Default Need Help PLEASE.

I am going to build a system of 2 TDA7492 amps in PBTL mode for a total of 86W x2 and using a 2.1 NE5532 tone preamplifierGoing to add a single channel TDA7498 as a Sub amp,here are the devices
YJ NE5532 HiFi 2 1 Tone Preamplifier Completed Board | eBay
(2) of these boards in PBTL, Class D TDA7492 High Power Digital Amplifier Board 50W 2 100W Parallel Bridge | eBay
TDA7498 in Parallel 2 0 Power Finished Amplifier Board Free Shipping | eBay

OK the thing I need to do is find a way to power all 4 devices ,3 are ingle input dc and the preamp is 12v-0-12v daul ac input.is there a way to get all these connected using a transformer. and what type of transformer or other supply.

Please can you give me a link to some choices of power supplys and trans formers and help me out if you do not mind.I am almost blind but able to see ok and limited mobility,but I really want to make this happen,I cant afford a built amp with this quality sound.Please if someone could help me I would be so thankful.I am not real savy on electronics but I know enough to get me by.and Enough to respect it.

I want a power supply that is going to let me use these devices to their full potential.if I need to seperat e preamp it is ok,but I would like to keep it to 2 plugs used.

Thank You And I really hope someone will help me it is important to me,Please.
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Old 17th May 2014, 04:29 PM   #2
cleonjr is offline cleonjr  United States
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If I need to add more info ,let me know.
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Old 17th May 2014, 07:40 PM   #3
tomchr is offline tomchr  United States
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I suggest having the subject line changed to something more meaningful. You'll attract more help that way.

For transformers, I suggest looking at Antek.

There are many universal supply boards around - including some in the DIY Audio Store as I recall.

~Tom
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Old 17th May 2014, 07:56 PM   #4
cleonjr is offline cleonjr  United States
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HMMM,were do I change the subject title cant seem to find nothing,one thing I dont get is why no one can just straight out help someone out .it is like you have to jump through al kinds of hoops and things.I have a pretty hard time maneuvering around all this and I wish some one would come along and just start spilling info.I have begining alzheimers and it gets bad in the evening so I am about shot for the day have to start again tomorow.I am trying to get this amp done been trying to do a amp project for a while,

this is the newest attempt,mostly because I cant get any assistance.I understand no one is obligated to help me me geewhiz for real.I am not that way and whay should anyone else. there are a considerable number of veiws to this thread surely no one has anything to share.eventualy I might find a solution but it would be so much easier this way.I should not have to spill my guts to get help and someone will pop up and tell me well if you do this you will get some help,,bloody hell you say.this is very frustrating to say the least.
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Old 17th May 2014, 08:22 PM   #5
cleonjr is offline cleonjr  United States
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ok would it be something like this http://download.siliconexpert.com/pd..._aa_abc201.pdf
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Old 17th May 2014, 08:41 PM   #6
cleonjr is offline cleonjr  United States
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Maybe someone can make me a power supply ,PM me for talk if you can do this.
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Old 17th May 2014, 10:26 PM   #7
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For the preamp a 12-0-12 center tap toriod.

Three switching power supplies for the class D amps at the appropriate voltages and wattages.

This is one of many solutions but should get you started.
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Old 17th May 2014, 11:08 PM   #8
cleonjr is offline cleonjr  United States
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Quote:
Originally Posted by Mark Whitney View Post
For the preamp a 12-0-12 center tap toriod.

Three switching power supplies for the class D amps at the appropriate voltages and wattages.

This is one of many solutions but should get you started.
ok well I thought I could get just i1 unit to power them all.I will look into what you are saying,,If I could get another preamp that uses a single power input maybe I could find a powersupply with multi variable settings.
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