AudioNervosa

Systemic Development => Amplification and Preamplification => Topic started by: dflee on October 22, 2017, 03:59:11 PM

Title: First One amp module
Post by: dflee on October 22, 2017, 03:59:11 PM
Looking at this module to have put together.
Anyone here heard or have it. It looks interesting and I have a case (14X14X5.5) to put a pair into if they will fit.
Any input would be helpful. I'm running an Accuphase pre and older Legacy Classics for speakers.
What ya'll think?

Don
Title: Re: First One amp module
Post by: uncola on October 24, 2017, 07:47:17 PM
I haven't heard it but my forum friend who I trust has heard it and said it was great and better than ncore(I know the first one module is class ab but with recommended switching mode power supply)
Title: Re: First One amp module
Post by: Folsom on October 27, 2017, 12:15:50 PM
What are the speaker specs?
Title: Re: First One amp module
Post by: dflee on October 27, 2017, 02:44:57 PM

 Just spoke w/ Legacy and they informed me the speaker dips to 3 Ohm. I enjoy the Classics and found them to be quite good w/ the right amp. Old amp was a, a/b and haven't listened enough to class D to warm up to it.
 
System Type: 6 drivers, 4 way. Tweeter: 4” Ribbon. Midrange: 1.25” soft textile dome. Midwoofer: 7” Kevlar®. Subwoofer: (2) 10”Treated Paper. Low Frequency Alignment: B4 Reflex. Sensitivity: 92 dB @ 2.83 V/1m. Frequency response: 22 Hz - 30 kHz +/- 2 dB. Crossover frequency (Hz): 120, 2.8k, 10k. Recommended Amplification: 25 - 300 watts/channel. Impedance: 4 ohms. Dimensions: 44” H x 12”W x 12” D Weight: 110 lbs.

Don
Title: Re: First One amp module
Post by: poseidonsvoice on October 29, 2017, 05:46:55 AM
dflee,

For your Legacy Classics that I am intimately familiar with, I would recommend a good SS high current design. The First One v1.4 would fit in that regard.

Pinocchio (Do) is a colleague and an expert diy’er - he has a ton of projects under his belt. He also has too many amps in his house.

For $700, this is a steal:
http://www.diyaudio.com/forums/swap-meet/312279-fs-firstone-v1-4-complete-amplifier.html

Best,
Anand.
Title: Re: First One amp module
Post by: dflee on October 29, 2017, 09:55:54 AM
Anyone know shipping costs from Canada?
Thanks for the info Anand. I am looking into it.
Title: Re: First One amp module
Post by: poseidonsvoice on October 29, 2017, 10:06:25 AM
Quote from: dflee on October 29, 2017, 09:55:54 AM
Anyone know shipping costs from Canada?

Dunno but Do is a stand up honest fella. He lives in Montreal. I think it’s worth it given the fantastic execution of his builds. $50-$75? Perhaps less since there isn’t a large toroid weighing it down. And don’t worry, the SMPS that LC recommends is tried, tested and compared. Very quiet. I would get it but I’m already behind by about 8 amp builds. Frankly, I’m surprised Do is selling it but again the amplifiers he already has at his house are quite good, especially his AMB Beta 24 build that was designed by Ti Kan (yes it is also on my list to be built!).

Best,
Anand.
Title: Re: First One amp module
Post by: richidoo on October 29, 2017, 11:50:34 AM
Looks like a good deal. It will be MUCH easier and probably cheaper than building one yourself.

Just make sure it can handle the impedance dip on the speakers. It might go as low as 2ohms.

Get shipping quote online from the shippers' websites after you get the weight and size of the box.

Don't forget to tag on a few percent for import duty from Canada. 
Title: Re: First One amp module
Post by: richidoo on November 11, 2017, 07:48:39 AM
Don, this looks good:

http://www.audiocircle.com/index.php?topic=153645.0