Hz Audio amps

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   Was wondering what model was the highest power they made? I have a DPX1100 here which is 550w per channel. with 8 BUZ fets per ch, on the pcb by the heatsink there is provision for 9th and 10th fets to be fitted, so was there a more powerful model which used 10 fets? The mounting holes appear to be completely unsoldered, and so I doubt it ever had 10 and someone pinched 2 from it. I was thinking of fitting these anyway to improve the performance a bit seeing as I have about 14 spare BUZ900P 905P

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BUZguy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 17 November 2011 Location: South Wales Status: Offline Points: 323	Post Options Post Reply Quote BUZguy Report Post Thanks(0) Quote Reply Topic: Hz Audio amps Posted: 18 February 2012 at 12:17pm
	Was wondering what model was the highest power they made? I have a DPX1100 here which is 550w per channel. with 8 BUZ fets per ch, on the pcb by the heatsink there is provision for 9th and 10th fets to be fitted, so was there a more powerful model which used 10 fets? The mounting holes appear to be completely unsoldered, and so I doubt it ever had 10 and someone pinched 2 from it. I was thinking of fitting these anyway to improve the performance a bit seeing as I have about 14 spare BUZ900P 905P

djeddie Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 2029	Post Options Post Reply Quote djeddie Report Post Thanks(0) Quote Reply Posted: 18 February 2012 at 1:16pm
	Next time I see Dave (the designer) I'll ask him for you, his workshop's about five minutes walk away from me.
	E=mc² ±3dB

Safetyman Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 08 February 2009 Location: Brighton, East Sussex Status: Offline Points: 385	Post Options Post Reply Quote Safetyman Report Post Thanks(0) Quote Reply Posted: 18 February 2012 at 7:07pm
	They did a 1500 ( 750 pc ) which I think was their largest ?
	Protect your hearing, and feel the music. SEDA Health & Safety Officer MU South East Roving Safety Rep.

BUZguy Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 17 November 2011 Location: South Wales Status: Offline Points: 323	Post Options Post Reply Quote BUZguy Report Post Thanks(0) Quote Reply Posted: 21 February 2012 at 8:37pm
	Oh well, a good afternoon's work on this DPX1100 anyhow. A noisy continuous running fan was getting on my nerves. Fitted a 50C normally open bi-metallic switch on each sink. The holes for the extra fets were there but un-threaded, incredibly. Had to drill it out to 2.8mm and try and tap in a 3mm bolt. A couple of small heatsinks attached to the 7815, 7915 regs as these get quite hot as they are. I'm wondering though whether the +/- 82v DC supply is high enough for a Mosfet 550w per ch. It drops to 78v with just one channel running up to max.