Would the ACA 1.6 have enough power to drive my parallel dual woofers on my open baffles ? The drivers is use are:
- 1 x 5" full range @ 92 dB 6.3 Ohms
- 2 x 15" woofers @ 100 dB 2.94 Ohms Ohms (wired in parallel)
The XO varies from 100 - 225 using miniDSP but I plan to switch that out pending the Pass active XO kit.
- 1 x 5" full range @ 92 dB 6.3 Ohms
- 2 x 15" woofers @ 100 dB 2.94 Ohms Ohms (wired in parallel)
The XO varies from 100 - 225 using miniDSP but I plan to switch that out pending the Pass active XO kit.
Can I ask if the more robust Tensility 54-00064 DC jack will be supplied as part of the ACA V1.6 parts kit.
Yes, it will.
keep in mind that
Nelson Pass: Being that the channels are inverting in phase, another way is to simply drive one channel and feed its output through an appropriately large value resistor to the input of the other channel, taking the output off both minus outputs of the ACA.
The result is a bridged amplifier. It will deliver about 15 watts into 8 ohms at clipping, but will not enjoy the distortion cancellation that comes with driving the inputs balanced. The result is still negative phase 2nd harmonic at ordinary levels.
Waiting for the Kit V1.6 I bought a Yamaha WXC-50. I needed a pre-amp a dac and preferably a streamer. The Yamaha does it all. Very convenient.
However connected to my Integrated dac/amp the Yamaha doesn't sound as nice as the ultraRendu streamer by far. So when the Kit V1.6 really does sound well and loud enough with my 86dB 4Ohm speakers I'll need to sell the Yamaha and buy a real dac pre-amp.
However connected to my Integrated dac/amp the Yamaha doesn't sound as nice as the ultraRendu streamer by far. So when the Kit V1.6 really does sound well and loud enough with my 86dB 4Ohm speakers I'll need to sell the Yamaha and buy a real dac pre-amp.
Will ACA work with Primare PRE30 preamplifier
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.
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.
- Will the distortion remain at 0.7% at 1 Watt in this case?
- Each amp has 4 speaker terminals. In case of a mono-block, what two terminals should be connected to a speaker?
- Is my Primare PRE30 balanced preamplifier suitable to work with ACA mono-blocks?
Thanks for the feedback Gary Everything is on track for the parts kit on or before the advertised shipping date of July 31st. Updates here: Amp Camp Amp Kit V1.6 - Pre-Order Status Page – diyAudio Store
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.
- Will the distortion remain at 0.7% at 1 Watt in this case?
- Each amp has 4 speaker terminals. In case of a mono-block, what two terminals should be connected to a speaker?
- 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):
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.
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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?
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.
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