New LM1875 pcb and kit pre-order special - diyAudio
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Old 1st July 2008, 04:29 AM   #1
BrianGT is offline BrianGT  United States
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Default New LM1875 pcb and kit pre-order special

I should receive the next batch of LM1875 boards soon, and have put them up on my website for pre-order.

Details on boards here:
Finally made a LM1875 amp
and here:
http://chipamp.com/lm1875.shtml

I should begin shipping out the new kits in 2 weeks. I have put up a pre-order special for the kits, including an extra stereo pcb set along with the purchase of a kit. I will run this special until the kits start shipping out.

Drop me a mail if you have any questions. Sorry it took so long to get these kits out. I have been really busy at work, and wanted to make sure to get a few amps built with the boards and used for a while before making them available on the webpage.

Pic from initial prototype:
Click the image to open in full size.
I will see if I can get pics posted from the assembled amp soon also.

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Brian
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Old 2nd July 2008, 08:11 PM   #2
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Default Thank You Brian

Thank You Brian for doing this project..
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Old 9th July 2008, 07:58 PM   #3
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Looks fantastic, thank you.

Do you think this would make a good first amp DIY project (as compared to your 3886 kit?)

It will be driving bookshelf speakers in a medium sized room.

And for the other newbs... What else besides your kit, the PE transformer, soldering equipment (and patience,) will I need?
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Old 9th July 2008, 08:04 PM   #4
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Hi Brian
Paypal sent for 1xLM1875 and 1xLM3886 PCB kits.
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Old 9th July 2008, 08:47 PM   #5
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just ordered two LM1875 PCB sets...

I messed up, so I had to send the money in to paypal transmission.. but I hope everything goes allright...

Thanks,
Thijs
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Old 9th July 2008, 11:50 PM   #6
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Brian; Could you tell me what the board sizes are? Have a special project in mind.

Thanks,
Pete
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Old 10th July 2008, 01:32 PM   #7
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Quote:
Originally posted by morepower4me
Looks fantastic, thank you.

Do you think this would make a good first amp DIY project (as compared to your 3886 kit?)

It will be driving bookshelf speakers in a medium sized room.

And for the other newbs... What else besides your kit, the PE transformer, soldering equipment (and patience,) will I need?

http://www.partsexpress.com/pe/showd...number=122-620

From www.Chipamp.com
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Old 18th July 2008, 07:12 PM   #8
BrianGT is offline BrianGT  United States
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The boards have arrived, and I have started putting the kits together. They will ship out on Monday, and I will remove the special at that point.

Quote:
Originally posted by morepower4me
Looks fantastic, thank you.

Do you think this would make a good first amp DIY project (as compared to your 3886 kit?)

It will be driving bookshelf speakers in a medium sized room.

And for the other newbs... What else besides your kit, the PE transformer, soldering equipment (and patience,) will I need?
The LM1875 is just as simple as the LM3886 kit, and will be a great project for a beginner.

Quote:
Originally posted by tschrama
just ordered two LM1875 PCB sets...

I messed up, so I had to send the money in to paypal transmission.. but I hope everything goes allright...

Thanks,
Thijs
Everything looks good. Orders will go out Monday.

Quote:
Originally posted by Peter Menting
Brian; Could you tell me what the board sizes are? Have a special project in mind.

Thanks,
Pete
The amp boards are roughly 1/2 the size of the LM3886/LM3875 boards. I don't have dimensions on me now, but I will look then up when I get home.

Sorry for the delay, let me know if any of you guys have more questions,

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Brian
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Old 18th July 2008, 08:13 PM   #9
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Hi Brian I've got one.

In my system, Tri active amp, DEQ/DCX 2496, I'm wondering wich amp will be the more accurate in driving a CP21F, 105dB tweeter, 6.1 Ohms ? 3886 or 1875 ? Freq range from 2KHz to 20KHz.
I don't need a lot of power, but definition.
Your opinion ?
Thanks
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Old 19th July 2008, 09:45 PM   #10
BrianGT is offline BrianGT  United States
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Quote:
Originally posted by korben69
Hi Brian I've got one.

In my system, Tri active amp, DEQ/DCX 2496, I'm wondering wich amp will be the more accurate in driving a CP21F, 105dB tweeter, 6.1 Ohms ? 3886 or 1875 ? Freq range from 2KHz to 20KHz.
I don't need a lot of power, but definition.
Your opinion ?
Thanks
If you don't need the power, I would try the LM1875.

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