Apex circuits (link)

[partyjups]

http://eportal.apexmicrotech.com/mainsite/pdf/design/audio_des.pdf?guid=<=guid&item_id=&f_page=

 

[djk]

Pick a product, please
http://eportal.apexmicrotech.com/mainsite/products/pages/selector_matrix.asp?guid=&item_id=&f_page=

 

[djk]

Their lowest cost class D amplifier
http://eportal.apexmicrotech.com/mainsite/products/pages/pwm_amps/sa60.asp?guid=&item_id=&f_page=
Will do 400W/4R from a typical un-regulated supply.Production qty is $62.90, qty one is $94.35
http://eportal.apexmicrotech.com/mainsite/products/pages/pwm_amps/sa18.asp?guid=&item_id=&f_page=
Will do 3.2KW/8R , $272 qty=1, $181 qty=production.

 

[UrSv]

What would I use them for with respect to audio? The switching frequency seems to be 22.5 kHz which makes them kinda useless for anything but something like 100 Hz or am I missing something?

/UrSv

 

[djk]

The MOSFET ones run at 250Khz, the IGBT at 22.5Khz, obviously the later should be confined to subwoofer use.Why? Do you have a tweeter that can handle 10KW? I figure the IGBT model to drive four 18" subs in series/parallel, assuming the 18s could handle the 800W per driver 1500W peak that this module can deliver.

 

[micijanus]

Sa07 for Audio

TDA7294 TDA7293 LM3668 Spice
TDA7294 TDA7293 LM3668 Spice models needed

& good shematics

miciyah@webmail.co.za

 

[micijanus]

Sa07 for Audio

SA07 is for Audio - and keep me posted!!!

$97$

 

[micijanus]

DDX for Audio

http://www.apogeeddx.com/apogee_products.html
- and keep me posted also!!!

$4$

 

[micijanus]

Switching speeds

Switching

@ almost 384 KHz DDX2100 DDX4100
@ 500 KHz SA07

I need someone to construct me a spice model of the DDX 2100
PLZ - i know to little

Also to help me get to a decent design