RE: If you could get the schematic

Posted by 1973shovel (A) on July 1, 2007 at 06:24:55

In Reply to: RE: Hey djk? posted by djk on June 30, 2007 at 19:18:03:

I'm going to contact NHT to see if they'll send me a schematic. I also looked up Ken Kantor's whereabouts, as I understand he's the designer of this amp. He might have a few suggestions if he's so willing.

I don't intend to get too crazy with upgrades on this thing. It's only an 80 watt amp, and I think something with more power than that might be useful driving a sub. I've seen various plate amps @ 200W with variable frequency controls going for $99 on sale. Those might be a better place to start any extensive tweaking.

I'm going to replace the 4558 op-amp with an OPA2604 while I'm in there changing caps. I suspect there's op-amps with better bass than the 2604, but I'm looking for the "drop in" reliability you spoke of.

Thanks for the feedback!

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Follow Ups Full Thread

Topic - Op-amp = Slop Amp? - 1973shovel 18:12:53 06/29/07 (22)

Op-amp comparison - Blooze 23:41:54 07/06/07 (0)

Try different opamp types... - mpathus 00:19:04 06/30/07 (0)

RE: Op-amp = Slop Amp? - Bare 22:58:16 06/29/07 (5)

RE: Wally Jung be damned :-) - 1973shovel 09:57:41 06/30/07 (4)

RE: Wally Jung be damned :-) - nightdoggy 21:00:06 06/30/07 (3)

RE: I would not be able to sleep if I had one of those in the house - 1973shovel 06:45:20 07/01/07 (2)

Less Unimportant? - 1973shovel 08:50:12 07/01/07 (0)

RE: I would not be able to sleep if I had one of those in the house - nightdoggy 08:01:38 07/01/07 (0)

RE: Op-amp = Slop Amp? - djk 18:37:56 06/29/07 (13)

Hey djk? - 1973shovel 12:36:10 06/30/07 (2)

RE: Hey djk? - djk 19:18:03 06/30/07 (1)

RE: If you could get the schematic - 1973shovel 06:24:55 07/01/07 (0)

Quotes From The TI Site - 1973shovel 19:23:52 06/29/07 (9)

Could you explain why - clifff 13:15:57 07/01/07 (8)

RE: Could you explain why - 1973shovel 18:01:22 07/01/07 (7)

RE: Could you explain why - nightdoggy 07:56:02 07/02/07 (6)

get rid of that 4558 as fast as you can - 1973shovel 18:51:42 07/02/07 (5)

RE: get rid of that 4558 as fast as you can - nightdoggy 02:29:03 07/03/07 (4)

RE:I have Luxman tuners that use them to drive signal strength LEDs. - 1973shovel 03:11:51 07/03/07 (3)

Actually I ripped it out of both tuners! - nightdoggy 16:12:23 07/03/07 (2)

RE: my cat just ran by me with another mouse in her chops - 1973shovel 04:38:03 07/04/07 (1)

She left the last corpse on my bed! - nightdoggy 09:28:39 07/04/07 (0)

Follow Ups

RE: If you could get the schematic - 1973shovel 06:24:55 07/01/07 (0)

RE: If you could get the schematic

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