Rage And Blazer III TDA2040 Substitute?

This forum is for talking about all kinds of Peavey guitar amplifiers.
Post Reply
jspina911
Member
Posts: 11
Joined: Mon Mar 23, 2020 11:34 am

Rage And Blazer III TDA2040 Substitute?

Post by jspina911 » Sun Jan 23, 2022 4:48 pm

Hi all....Since there seem to be lots of fake TDA2040s out there,can I use the LM1875 without having to change anything in the power amp? Also is there any loss of power using this chip amp as it seems rated for 8 ohms? Thank you.

User avatar
JamesPaul
Member
Posts: 2477
Joined: Fri Sep 12, 2008 7:28 pm
Location: Moving Towards Adam Brown's State

Re: Rage And Blazer III TDA2040 Substitute?

Post by JamesPaul » Thu Jan 27, 2022 1:59 am

jspina911 wrote:
Sun Jan 23, 2022 4:48 pm
Hi all....Since there seem to be lots of fake TDA2040s out there,can I use the LM1875 without having to change anything in the power amp? Also is there any loss of power using this chip amp as it seems rated for 8 ohms? Thank you.
I would check Mouser, Digi-Key or Jameco. They are all reputable suppliers and should have a recommended substitute. You will pay a little more than eBay, Amazon, etc., but again all reputable suppliers. Actually, you are likely safe using anything in Roger's Need Parts? topic. I did take a look at the datasheets and the LM1875 will handle higher supply voltages than the TDA2040, and also produce ~25W with +/-25V supplies. Other than that it looks like a drop in to me.
Enzo wrote:I find if the amp is working, that is a good point to stop fixing it.
James Paul's Peaveys
Decade, Classics, Ecoustic, Windsors, VYPYR, Triple XXX, XXL, VKs, Bandit, JSXs, VIP, Piranha and a Penta.

User avatar
Enzo
Member
Posts: 9535
Joined: Fri Sep 12, 2008 10:24 pm
Location: Lansing, Michigan

Re: Rage And Blazer III TDA2040 Substitute?

Post by Enzo » Thu Jan 27, 2022 5:19 am

Yes, you can use the LM1875.

And I just checked yesterday, Jameco has 369 TDA2030 in stock, made by ST.

jspina911
Member
Posts: 11
Joined: Mon Mar 23, 2020 11:34 am

Re: Rage And Blazer III TDA2040 Substitute?

Post by jspina911 » Wed Oct 05, 2022 4:37 pm

JamesPaul wrote:
Thu Jan 27, 2022 1:59 am
jspina911 wrote:
Sun Jan 23, 2022 4:48 pm
Hi all....Since there seem to be lots of fake TDA2040s out there,can I use the LM1875 without having to change anything in the power amp? Also is there any loss of power using this chip amp as it seems rated for 8 ohms? Thank you.
I would check Mouser, Digi-Key or Jameco. They are all reputable suppliers and should have a recommended substitute. You will pay a little more than eBay, Amazon, etc., but again all reputable suppliers. Actually, you are likely safe using anything in Roger's Need Parts? topic. I did take a look at the datasheets and the LM1875 will handle higher supply voltages than the TDA2040, and also produce ~25W with +/-25V supplies. Other than that it looks like a drop in to me.
Thanks so much....Geez shame on me as I just saw this...Better late than never right? LOL....Very late!

User avatar
dak
Member
Posts: 428
Joined: Fri Dec 24, 2021 7:20 am
Location: Germany

Re: Rage And Blazer III TDA2040 Substitute?

Post by dak » Wed Oct 05, 2022 10:32 pm

jspina911 wrote:
Wed Oct 05, 2022 4:37 pm
Thanks so much....Geez shame on me as I just saw this...Better late than never right? LOL....Very late!
Yes.

jspina911
Member
Posts: 11
Joined: Mon Mar 23, 2020 11:34 am

Re: Rage And Blazer III TDA2040 Substitute?

Post by jspina911 » Mon Oct 10, 2022 12:13 pm

dak wrote:
Wed Oct 05, 2022 10:32 pm
jspina911 wrote:
Wed Oct 05, 2022 4:37 pm
Thanks so much....Geez shame on me as I just saw this...Better late than never right? LOL....Very late!
Yes.
Yes and sorry about that!

Post Reply