$175 Class D amp--120 wpc

shadowlight · « **Reply #420 on:** 23 Feb 2010, 02:03 am »

So much for turning on the amp today and having a listen. Turn it on, no power

. Started checking all the connections making sure everything is wired up correctly. Finally decided to check the IEC fuse section, guess what no fuses

. Will make a trip to home depot on my way home from work and pickup couple of 6amp slow blow fuse.

The adventure continues.

steve k · « **Reply #421 on:** 23 Feb 2010, 02:10 am »

Sorry, I had to laugh. We've all had days like that I'm afraid. It'll be worth it when it's up and running.

shadowlight · « **Reply #422 on:** 23 Feb 2010, 02:20 am »

Quote from: steve k on 23 Feb 2010, 02:10 am

Sorry, I had to laugh. We've all had days like that I'm afraid. It'll be worth it when it's up and running.

Yeah I did that too, after I smacked myself upside the head for making assumption related to the fuse being included and JKelley asked the question earlier in the thread and he is using the IEC plug

There are couple of folks in NJ/PA/NY area who want to listen to it before that put the order in. Was hoping to get some burn in done before they arrive.

shadowlight · « **Reply #423 on:** 23 Feb 2010, 02:23 am »

Quote from: pumpkinman on 22 Feb 2010, 11:42 pm

Steve Steve Hey Dude orange HiFi gear is so Passe ! (always good to have fun)
Just went to Home Depot bought a piece 1"x6"x18" poplar for the face and stainless rack handles
Not to sure about using rack handles

You have a nice build going Bill.

srb · « **Reply #424 on:** 23 Feb 2010, 02:41 am »

Is there any way (or adavantage) in building some kind of dual mono configuration? I guess the amp modules have common power supply connections for the channels, so doubling up on the transformers and/or power supply boards wouldn't be a possibility.

I don't see any specific mono amp boards, and since I would be using 4 ohm speakers, I'm assuming I wouldn't want to go with a bridged configuration and have the amp see a 2 ohm load.

Steve

steve k · « **Reply #425 on:** 23 Feb 2010, 02:49 am »

Quote

I don't see any specific mono amp boards, and since I would be using 4 ohm speakers, I'm assuming I wouldn't want to go with a bridged configuration and have the amp see a 2 ohm load.

I think that depends on the load and how loud you like to listen. My buddy Bob is driving his Maggie MG-12's with a pair of 120's in bridged monoblock mode with no problem at all.

I tried doing the same thing with the ribbons/midrange on my MGIIIA's and at moderate to higher volumes, the amps kept shutting down from the protection circuits. They're both 4 ohm speakers. I'm assuming my speakers presented a tougher 2 ohm load to the amps than Bob's. Turns out with only one amp in stereo, I have all the power I need anyway for the mids/highs.

Might be worth discussing with Tom.

steve

pjchappy · « **Reply #426 on:** 23 Feb 2010, 02:58 am »

Hey Steve. . .I took another GIANT leap today. Ordered the IEC, binding posts and RCAs. . .

Paul

steve k · « **Reply #427 on:** 23 Feb 2010, 03:11 am »

Oh the humanity!!

pumpkinman · « **Reply #428 on:** 23 Feb 2010, 03:19 am »

Quote from: shadowlight on 23 Feb 2010, 02:23 am

You have a nice build going Bill.

Yes DP this has gotten my juices flowing. I don't want just a plane jane though.
I'll have to do something to smarten it up visually I've been informed all I've ordered is
on it's way except my binding posts
I'm sure this has been discussed some wire comes with the kit what will I need to buy as far as that extra wire
What say you Steve

steve k · « **Reply #429 on:** 23 Feb 2010, 03:25 am »

I'm not an expert on wire but I used 16 ga. silver coated copper for all my power connections, twisted pairs I yanked out of some Cat 5 wire for the LED's, and I used 26 ga. DIY silver IC's from the amp board RCA's to the case RCA's. There's probably better stuff out there though, right guys?

TrungT · « **Reply #430 on:** 23 Feb 2010, 05:04 am »

Cheap Metal project box.
http://www.surplussales.com/Cab-RacksHardware/encl_2.html
You can see pictures here:
http://www.surplussales.com/Cab-RacksHardware/Close-ups/encl_nabu.html
Hope that help.

shadowlight · « **Reply #431 on:** 23 Feb 2010, 11:39 am »

Two more question:

1) I have put one rubber gasket/pad under the transformer and one on the top. Hopefully that is the right way.

2) For the ground wire can I just take the bare wire and find a secure place to attach directly to the case.

Thanks

shadowlight · « **Reply #432 on:** 23 Feb 2010, 11:43 am »

Quote from: pumpkinman on 23 Feb 2010, 03:19 am

Yes DP this has gotten my juices flowing. I don't want just a plane jane though.
I'll have to do something to smarten it up visually I've been informed all I've ordered is on it's way except my binding posts

I'm sure this has been discussed some wire comes with the kit what will I need to buy as far as that extra wire
What say you Steve [/size]

I went the cheap route with what ever was laying around.

I use 16 ga wire that came out of yard master for the power supply to amp board, rca input connection and speaker connections. Picked up 12ga stranded wire from Home Depot for IEC to tranny connection.

evan1 · « **Reply #433 on:** 23 Feb 2010, 01:38 pm »

Quote from: shadowlight on 23 Feb 2010, 11:43 am

I went the cheap route with what ever was laying around.

I use 16 ga wire that came out of yard master for the power supply to amp board, rca input connection and speaker connections. Picked up 12ga stranded wire from Home Depot for IEC to tranny connection.

Yard Master ? Is your amp going to be able to cut grass.
Bring it to the next rave

Nick77 · « **Reply #434 on:** 23 Feb 2010, 02:04 pm »

Quote from: shadowlight on 23 Feb 2010, 02:20 am

Yeah I did that too, after I smacked myself upside the head for making assumption related to the fuse being included and JKelley asked the question earlier in the thread and he is using the IEC plug

There are couple of folks in NJ/PA/NY area who want to listen to it before that put the order in. Was hoping to get some burn in done before they arrive.

Surprisingly i didnt experience alot of breakin improvment, it sounded really good right off the bat.

santacore · « **Reply #435 on:** 23 Feb 2010, 03:16 pm »

I used a little Yard Master on mine too. Seems like it works great.

pumpkinman · « **Reply #436 on:** 23 Feb 2010, 03:39 pm »

I'm I building an amp or a kitchen drawer
You be the judge

ohenry · « **Reply #437 on:** 23 Feb 2010, 03:42 pm »

Very nice case, lots of bang for the buck.

zapper7 · « **Reply #438 on:** 23 Feb 2010, 04:14 pm »

That's exactly what I thought while doing it too.

macrojack · « **Reply #439 on:** 23 Feb 2010, 06:54 pm »

Funny comment - while wondering about possible shortcuts in building a case, I am considering just using a kitchen drawer and putting a piece of perforated metal on top. Why not?