Hello,
I have for sale my modded Aleph J pcbs. These were just pulled out from the enclosures and replaced with an output stage similar to the F4.
The pcbs were come from Peter Daniel.
The pcbs have the aleph ccs resistors and the mosfet degeneration resistors replaced with a lower value, 0.33r, which gives higher bias current, 1.6a/fet.
The ccs that biases the front end is replaced with an tl431+bjt ccs.
I used the pcbs as monoblocks with 30x16x4cm heatsinks, having 2 mosfets on one heatsink(4 heatsinks in total).
The heatsinks were sitting ~30c above room temperature.
The power supply voltage was close to 22.5v.
All caps onboard are elna bypassed with ero.
The mosfets and the teflon isolators were cleaned.
I am attaching a few thd measurements.
My speakers are a bit inefficient at only 87db and also low impedance, 3.4r. This was the reason of needing higher bias.
Price SOLD
I have for sale my modded Aleph J pcbs. These were just pulled out from the enclosures and replaced with an output stage similar to the F4.
The pcbs were come from Peter Daniel.
The pcbs have the aleph ccs resistors and the mosfet degeneration resistors replaced with a lower value, 0.33r, which gives higher bias current, 1.6a/fet.
The ccs that biases the front end is replaced with an tl431+bjt ccs.
I used the pcbs as monoblocks with 30x16x4cm heatsinks, having 2 mosfets on one heatsink(4 heatsinks in total).
The heatsinks were sitting ~30c above room temperature.
The power supply voltage was close to 22.5v.
All caps onboard are elna bypassed with ero.
The mosfets and the teflon isolators were cleaned.
I am attaching a few thd measurements.
My speakers are a bit inefficient at only 87db and also low impedance, 3.4r. This was the reason of needing higher bias.
Price SOLD
Attachments
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The shipping to you is 31€ using a fast carrier or 15€ using the post office.
If you want to go ahead with the payment we can go ahead by email or private messaging for the rest of the details.
I have sent you a message here and also an email the last time you posted in the thread. You can reply to one of those.
Thanks.
If you want to go ahead with the payment we can go ahead by email or private messaging for the rest of the details.
I have sent you a message here and also an email the last time you posted in the thread. You can reply to one of those.
Thanks.
I have sent a PayPal payment request at the email address you left here. Count in that from the entire amount more than 5€ are the paypal fees.