Toroidal power supply transformers

crippledchicken · 10th June 2006, 08:12 PM

anyone know where to order replacement transformers to upgrade a sub plate amp with reasonable prices? Thanks!

ssmith · 11th June 2006, 09:55 AM

what value transformer do you need?

escotte · 11th June 2006, 11:34 AM

Check out Parts Express:

http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=278&CFID=691041&CFTO KEN=54915087

pinkmouse · 11th June 2006, 11:55 AM

What makes you think it needs upgrading?

crippledchicken · 21st June 2006, 06:17 PM

thanks for all the replys! i've been away sorry it took so long to get back to you guys. the reason i thought i'd upgrade trannys is, i built a home sub using the dayton audio dvc 15 sub which is stated to have 2.6 ohm DC resistance (coils in paralell) and the rythmik audio basic 250 i'm running it on in a 4.7 cu ft. vented enclosure recommends not to use a driver in a vented enclosure with less than 3.0 ohms DC resistance to reduce chances of thermal shut down as often. i then talked to djk who said the best approach to beefing up the impeadance drive capabilitys would be larger VA rating same secondary or, the same VA with less secondary output voltage. his example 96v. secondary, use same VA but reduce to 80 volt secondary. can't find info on present tranny but he estimated maybe 250 or 300 VA i haven't checked secondary no load voltage yet but will. the power consumption rating on the 250 watt rythmik audio basic plate amp is 450 watts. 120v hope this helps thanks!

AndrewT · 21st June 2006, 06:47 PM

Hi,
would it be silly to suggest you put a plate amp on each voice coil?

Each then only has to drive, effectively, an 8ohm speaker and it should perform well at that, since currents are cut massively.

crippledchicken · 21st June 2006, 08:46 PM

you know, i had 150 watt driving it for awhile i should have got another just like that. i thought about it, might have worked pretty good! i may get another 150 watter since their so cheap later on. thanks for the reply

10th June 2006, 08:12 PM	#1
crippledchicken diyAudio Member Join Date: Dec 2003 Location: south east mo.	Toroidal power supply transformers anyone know where to order replacement transformers to upgrade a sub plate amp with reasonable prices? Thanks!

11th June 2006, 11:34 AM	#3
escotte diyAudio Member Join Date: Jun 2006	buying toroidal transformers Check out Parts Express: http://www.partsexpress.com/webpage.cfm?&DID=7&WebPage_ID=278&CFID=691041&CFTO KEN=54915087

11th June 2006, 11:55 AM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	What makes you think it needs upgrading? __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

21st June 2006, 06:47 PM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, would it be silly to suggest you put a plate amp on each voice coil? Each then only has to drive, effectively, an 8ohm speaker and it should perform well at that, since currents are cut massively. __________________ regards Andrew T.

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11th June 2006, 09:55 AM	#2
ssmith diyAudio Member Join Date: Aug 2005 Location: Paris	what value transformer do you need?

21st June 2006, 06:17 PM	#5
crippledchicken diyAudio Member Join Date: Dec 2003 Location: south east mo.	thanks for all the replys! i've been away sorry it took so long to get back to you guys. the reason i thought i'd upgrade trannys is, i built a home sub using the dayton audio dvc 15 sub which is stated to have 2.6 ohm DC resistance (coils in paralell) and the rythmik audio basic 250 i'm running it on in a 4.7 cu ft. vented enclosure recommends not to use a driver in a vented enclosure with less than 3.0 ohms DC resistance to reduce chances of thermal shut down as often. i then talked to djk who said the best approach to beefing up the impeadance drive capabilitys would be larger VA rating same secondary or, the same VA with less secondary output voltage. his example 96v. secondary, use same VA but reduce to 80 volt secondary. can't find info on present tranny but he estimated maybe 250 or 300 VA i haven't checked secondary no load voltage yet but will. the power consumption rating on the 250 watt rythmik audio basic plate amp is 450 watts. 120v hope this helps thanks!

21st June 2006, 08:46 PM	#7
crippledchicken diyAudio Member Join Date: Dec 2003 Location: south east mo.	you know, i had 150 watt driving it for awhile i should have got another just like that. i thought about it, might have worked pretty good! i may get another 150 watter since their so cheap later on. thanks for the reply

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