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Amp Camp Amp Kit V1.6
Amp Camp Amp Kit V1.6
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Old 20th June 2018, 01:56 AM   #51
poseidonsvoice is offline poseidonsvoice  United States
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Amp Camp Amp Kit V1.6
Quote:
Originally Posted by AVril View Post
Ddear friends:

A few questions from a newbie, if I may.

I understand each kit can be configured as a fully balanced mono-block with twice the power of the standard ACA, i.e. 2x8W into 8 Ohms per channel.
  1. Will the distortion remain at 0.7% at 1 Watt in this case?
  2. Each amp has 4 speaker terminals. In case of a mono-block, what two terminals should be connected to a speaker?
  3. Is my Primare PRE30 balanced preamplifier suitable to work with ACA mono-blocks?
Avril,

1) In the XLR mono block build, the ACA V1.6 will put out about 10 watts into 8 ohms (assuming 1% distortion). It will put out nearly 20 watts into 16 ohms.

The distortion at 1 watt with the above build is about 0.04% (distortion cancellation is advantageous here with the balanced design):

Click the image to open in full size.

2) If you look at this post, it illustrates how to connect the speaker terminals in the XLR mono block build.

3) Assuming a standard design, I do not see why you cannot use your Primare Pre30 balanced preamp. This assumes that both pin 1 and pin 3 of the XLR outputs on your Primare Pre30 have a signal and judging from Primare's design document on their website, that appears to be the case.

Best,
Anand.

Last edited by poseidonsvoice; 20th June 2018 at 02:00 AM.
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Old 20th June 2018, 03:28 AM   #52
6L6 is offline 6L6  United States
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Amp Camp Amp Kit V1.6
AVril -

1) No. It gets significantly better, 0.04% 1W 8Ohm
2) The two blacks.
3) Absolutely!


Click the image to open in full size.


Click the image to open in full size.

EDIT- This post brought to you by somebody who didn't reload their open browser window after going to dinner... (Anand's answers are all perfect)

Last edited by 6L6; 20th June 2018 at 03:30 AM.
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Old 20th June 2018, 08:03 AM   #53
plsvn is offline plsvn  Italy
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more n00b question(s):
once built as bridged XLR, can v1.6 still be also used as
a. SE bridged mono
b. stereo
(obviously by changing pre/speakers connections accordingly)

thanks
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Old 20th June 2018, 10:10 AM   #54
jaaptina is offline jaaptina
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Quote:
Originally Posted by nycavsr2000 View Post
Avril,

1) In the XLR mono block build, the ACA V1.6 will put out about 10 watts into 8 ohms (assuming 1% distortion). It will put out nearly 20 watts into 16 ohms.
Thought it was 20 Watts into 4 Ohm?
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Old 20th June 2018, 10:18 AM   #55
poseidonsvoice is offline poseidonsvoice  United States
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Amp Camp Amp Kit V1.6
Quote:
Originally Posted by jaaptina View Post
Thought it was 20 Watts into 4 Ohm?
Measurements are a beautiful thing. I honestly do not know what the output power is at 1% for 4 ohms.

Remember this topic is about using the ACA as a bridged mono block amplifier and as such loudspeaker designs (and especially inefficient ones) with persistently lower impedances (3-4 ohm loads between 100 Hz to 5khz) are probably not recommended especially if higher power is desired.

But for 8 ohms and 16 ohms, see here for details.

Best,
Anand.

Last edited by poseidonsvoice; 20th June 2018 at 10:26 AM.
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Old 20th June 2018, 02:29 PM   #56
6L6 is offline 6L6  United States
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plsvn -

a. Yes
b. Yes

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Old 20th June 2018, 03:55 PM   #57
plsvn is offline plsvn  Italy
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thank you 6L6: that's great indeed

in the while... just got a shipping notice from ModuShop, meaning cases should be here tomorrow
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Old 21st June 2018, 12:54 PM   #58
plsvn is offline plsvn  Italy
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and... here they are

http://files.diyaudio.com/forums/images/attach/jpg.gif
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File Type: jpg ACAv16.jpg (331.7 KB, 337 views)
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Old 21st June 2018, 02:20 PM   #59
RafaPolit is offline RafaPolit  Ecuador
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Lovely! Just another month for pieces and I guess we will start seeing a lot of pictures!
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Old 23rd June 2018, 02:18 PM   #60
AVril is offline AVril
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Thank you very kindly for your most appreciated help, dear friends!
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