Parasound Owners Thread - Page 184 - AVS Forum | Home Theater Discussions And Reviews
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post #5491 of 5502 Unread 02-21-2017, 11:16 PM
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What do you guys think, a single A21 or two A23's being used in mono bridged mode to power a pair of Bowers & Wilkins 804 D2s?
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post #5492 of 5502 Unread 02-22-2017, 06:48 AM
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Originally Posted by Seegs108 View Post
What do you guys think, a single A21 or two A23's being used in mono bridged mode to power a pair of Bowers & Wilkins 804 D2s?


Id go A21. More A class output.


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post #5493 of 5502 Unread 02-22-2017, 07:15 AM
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Quote:
Originally Posted by Seegs108 View Post
What do you guys think, a single A21 or two A23's being used in mono bridged mode to power a pair of Bowers & Wilkins 804 D2s?
From Stereophile:

http://www.stereophile.com/content/b...py2R27B62Jv.97

Quote:
The plot of the 804 Diamond's impedance magnitude and phase against frequency is shown in fig.1. The speaker is a moderately difficult load for the partnering amplifier to drive. Not only does its impedance reach a minimum value of 3 ohms at 108Hz, there is a combination of 4.5 ohms and a 53° capacitive phase angle at 72Hz, and the
Read more at http://www.stereophile.com/content/b...AjfEvdqs1kl.99
Parasound recommends 8 ohm loads for bridging. The A21 or bi-amped A23 are the choices. Bridged is not an option for these speakers.

- Rich

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post #5494 of 5502 Unread 02-23-2017, 08:11 AM
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Need a little advice

I have 2 Parasound A23's. I would like to use them to power my Monitor Audio Silver 8's. However, as these speakers are rated at 4 ohms, Parasound says I can't use the A23 's in mono.

I'm wondering the best way to get max power to my Speakers. Does the fact I'm also running an SVS PB12-Plus with the Silver 8's change the mono option now ?

Can I just run RCA's from the Recevier, LH into one A23 and the RH into the other ?

Appreciate any and all advice

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post #5495 of 5502 Unread 02-23-2017, 08:42 AM
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I have 2 Parasound A23's. I would like to use them to power my Monitor Audio Silver 8's. However, as these speakers are rated at 4 ohms, Parasound says I can't use the A23 's in mono.

I'm wondering the best way to get max power to my Speakers. Does the fact I'm also running an SVS PB12-Plus with the Silver 8's change the mono option now ?

Can I just run RCA's from the Recevier, LH into one A23 and the RH into the other ?

Appreciate any and all advice
Try bi-amping a single speaker. I use stacking banana connectors to make the switch easy. I recommend running 1 speaker only and, if possible, single blind test. At the very least, bi-amping will keep the upper-end clean if you run out of power on the low end.

- Rich

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post #5496 of 5502 Unread 02-23-2017, 08:52 AM
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Try bi-amping a single speaker. I use stacking banana connectors to make the switch easy. I recommend running 1 speaker only and, if possible, single blind test. At the very least, bi-amping will keep the upper-end clean if you run out of power on the low end.

- Rich
Great....I use Bi-wire speaker cable. Now I have to buy 2 runs of reg cable. *sigh*

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post #5497 of 5502 Unread 02-23-2017, 12:58 PM
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Great....I use Bi-wire speaker cable. Now I have to buy 2 runs of reg cable. *sigh*
Just get 16 ga ZIP from a hardware store.
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post #5498 of 5502 Unread 02-23-2017, 01:22 PM
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Just get 16 ga ZIP from a hardware store.

Or just use the the cables from the other speaker...


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post #5499 of 5502 Unread Today, 09:44 AM
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Just get 16 ga ZIP from a hardware store.
On a set like he has? That's like bringing your Ferrari to Jiffy Lube for an oil change.
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post #5500 of 5502 Unread Today, 10:07 AM
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I am a big fan of these banana connectors because they have plastic shields to avoid shorts, easily twisted ends to lock, and they can stack:

http://www.parts-express.com/angled-...insu--091-3608

I recommend using a single speaker to try bi-amping, Revel tests their speakers in DBT's with a single speaker. It much easier to listen for differences.
With these bananas, you can remove the straps connecting the high/low sections and then just switch between the stacking and using two channels for bi-amping at the amplifier. I can switch in < 10 seconds.

With some I amps and my Salon1's and Salon2's driven by the Parasound A21 the difference was apparent in a SBTs. This was easily identified in separate SBT session with to a couple of friends I brought in for listening sessions. However, I do believe any benefit involves specific speakers and amps. Some may experience no benefit. It is good to test in your system and draw your own conclusion.

I also recommend, splitting the signal with a Y adapter to avoid DSP based bi-amp processing in the processor. Run all tests using pure direct.
That may seem strange to some, but take a look at most processor reviews, the measurements are performed in direct mode and often specified that way as well.
Why..because that yields the best measurements. Ultimately, you may use processing but the goal is to remove as many variables as possible.

- Rich

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post #5501 of 5502 Unread Today, 12:52 PM
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Originally Posted by exm View Post
On a set like he has? That's like bringing your Ferrari to Jiffy Lube for an oil change.
I use a pair of Parasound A 23s for surround and three JC 1 monoblocks for LCR. An A23 is no Ferrari; a JC 1 might be a closer analogy. I will admit that I never took one of my Ferraris to Jiffy Lube, although you could for a simple oil change.

db
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post #5502 of 5502 Unread Today, 02:42 PM
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Originally Posted by dbphd View Post
I use a pair of Parasound A 23s for surround and three JC 1 monoblocks for LCR. An A23 is no Ferrari; a JC 1 might be a closer analogy. I will admit that I never took one of my Ferraris to Jiffy Lube, although you could for a simple oil change.

db
Hopefully you use decent speaker cable for your setup. If you doubt speaker cables make a difference, I urge you to go to your dealer and ask to try out some decent cables. In my opinion, I have never really heard a difference between ANY cable except speakers cables.
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