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First One - mosFET amplifier module

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Lazy Cat

Lazy Cat

Member
Joined 2007
taccodude said:
Are the Extra Cap PCB for sale yet ? How much are they?
Click to expand...

First One Cap Bank Positive or Negative module consisting of two four pin Mundorf MLytic 3,3 mF/100 V and two WIMA 0,22 uF/100 V, price is 68 EUR/pcs, including one DUELUND silver bypass 0,01 uF/600 V, price is 148 EUR/pcs.

First One Cap Bank modules will be available together with First One Large module, sales starting in second week of October.

First One Medium still available, a lot of interest lately, no worries all quotations will be send out very soon.

L.C. :cheers:
 
Lazy Cat

Lazy Cat

Member
Joined 2007
aradan said:
Hi guys,

A quick question. How are the speaker peotection boards powered.

I can see in some builds the binding postst are connected directly.

In other builds there is a conmection going to +/- terminals of the speaker protection boards.

What is the right way to use them?
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DC Sense is passive detector, no power supply required. It triggers SMPS to shutdown, power reset needed to set SMPS in normal operation mode.
 
E

Erlend Sæterdal

Member
Joined 2007
Lazy Cat said:
Yes these are cool. :up:

OK, input GND connection lost can cause HF burst, making zobel resistors dissipate more than expected normally, ending in smoke.

Just change all with burning marks to be on a safe side.

How come you choose only one SMPS to supply four modues? Mid-high speakers only?
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I wonder the Zobel resistors in my modules are 18 ohm can I use this?

ERJP14J180U | Panasonic ERJP14 Serien Tykfilm SMD tykfilmsmodstand, 1210 hus 18Ω 5% 0,5W 200ppm/C | Panasonic https://www.digikey.dk/product-detail/en/rohm-semiconductor/MCR50JZHJ180/RHM18BGCT-ND/2291184
 
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T

Theodosis O.

Member
Joined 2006
Lazy Cat said:
First One Cap Bank Positive or Negative module consisting of two four pin Mundorf MLytic 3,3 mF/100 V and two WIMA 0,22 uF/100 V, price is 68 EUR/pcs, including one DUELUND silver bypass 0,01 uF/600 V, price is 148 EUR/pcs.

First One Cap Bank modules will be available together with First One Large module, sales starting in second week of October.

First One Medium still available, a lot of interest lately, no worries all quotations will be send out very soon.

L.C. :cheers:
Click to expand...


Hi L.C.

Very nice boards really!!

I guess we need 4 for a stereo amp. ( 4 x 68= 272 EUR or 4 x 148= 592 EUR )
The deference is 320 EUR.

Do the DUELUNDs worth this money ?
Can you describe the improvements in sound quality ?

Thanks
 
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E

Erlend Sæterdal

Member
Joined 2007
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