Boston gt24

mike49504 · 1st January 2010, 10:11 PM

This amp has a blown power supply its using 75333p as the fets wondering if i can switch them over to a irfz48

Perry Babin · 1st January 2010, 10:45 PM

The IRFZ48 should work but it has slightly more gate capacitance so you may need to change the gate resistors if they're 100 ohms or higher. The Z48 is also rated for less current. If this is for a paying customer, you should use the original parts.

mike49504 · 1st January 2010, 11:29 PM

its 1 of my own amps i bought from a guy for $10.00 it was blown

If i use the irfz48's what do i need to use for the gate resistors they are using 56 ohm surface mount they say 560 on them so guessing it 56 ohm

Perry Babin · 1st January 2010, 11:48 PM

The 56 ohm resistors are sufficient if they're within tolerance.

mike49504 · 1st January 2010, 11:55 PM

I guess ill have to order some 56 ohm resistors cause all i have right now is 10 ohm and the resistors that are in the amp are blown in half

I Am An Idiot · 2nd January 2010, 01:43 AM

Perry, do you need pics of a GT-24? I have to work on one tomorrow. I did take pictures of the Memphis 500.

Perry Babin · 2nd January 2010, 01:49 AM

Sure, bring me some photos of it.

mike49504 · 9th January 2010, 12:31 AM

back to this amp im thinking of using the irfz44's for the fets instead of the 75333p and switching the gate resistors from 56 ohms to 47 ohms wondering if this will work

Perry Babin · 9th January 2010, 12:37 AM

The Z44s are rated for less current so the amp may not be as reliable. Either the 56 or the 47 ohm resistors will work.

mike49504 · 9th January 2010, 12:57 AM

would the irfz46n's be a lil better then the 44's?

1st January 2010, 10:11 PM	#1
mike49504 diyAudio Member Join Date: Sep 2006	Boston gt24 This amp has a blown power supply its using 75333p as the fets wondering if i can switch them over to a irfz48

1st January 2010, 10:45 PM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The IRFZ48 should work but it has slightly more gate capacitance so you may need to change the gate resistors if they're 100 ohms or higher. The Z48 is also rated for less current. If this is for a paying customer, you should use the original parts. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

1st January 2010, 11:48 PM	#4
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The 56 ohm resistors are sufficient if they're within tolerance. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

2nd January 2010, 01:43 AM	#6
I Am An Idiot diyAudio Member Join Date: Mar 2007	Perry, do you need pics of a GT-24? I have to work on one tomorrow. I did take pictures of the Memphis 500. __________________ If it ain't broke Don't fix it

2nd January 2010, 01:49 AM	#7
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Sure, bring me some photos of it. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links


	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

1st January 2010, 11:29 PM	#3
mike49504 diyAudio Member Join Date: Sep 2006	its 1 of my own amps i bought from a guy for $10.00 it was blown If i use the irfz48's what do i need to use for the gate resistors they are using 56 ohm surface mount they say 560 on them so guessing it 56 ohm

1st January 2010, 11:55 PM	#5
mike49504 diyAudio Member Join Date: Sep 2006	I guess ill have to order some 56 ohm resistors cause all i have right now is 10 ohm and the resistors that are in the amp are blown in half

9th January 2010, 12:31 AM	#8
mike49504 diyAudio Member Join Date: Sep 2006	back to this amp im thinking of using the irfz44's for the fets instead of the 75333p and switching the gate resistors from 56 ohms to 47 ohms wondering if this will work

9th January 2010, 12:37 AM	#9
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	The Z44s are rated for less current so the amp may not be as reliable. Either the 56 or the 47 ohm resistors will work. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

9th January 2010, 12:57 AM	#10
mike49504 diyAudio Member Join Date: Sep 2006	would the irfz46n's be a lil better then the 44's?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Boston PV1000 Diagram	tubenut	Subwoofers	1	14th November 2006 11:33 AM
Boston Pro's Bottoming out?	Deagle50ae	Car Audio	6	26th December 2005 09:24 AM
Boston A60's	MahangoeMan	Multi-Way	1	30th September 2005 06:46 PM
Greetings from Boston	AndyN	Introductions	3	11th October 2003 10:39 AM
Hello from Boston	Won	Introductions	0	30th November 2001 01:51 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read