The bass crossover is at 200-220 Hz, so I would give it a go

Posted by Timbo in Oz (A) on September 13, 2016 at 15:39:12

In Reply to: Revel F52`s and Horizontal Bi-Amping posted by s-a-k on September 13, 2016 at 12:17:18:

If it is much above 200Hz the tonal character of the bass amp may become audible and not match.

Taking the 87.5db spec at face value, you would need 22.5db of power (> 150 watts pc) in a single stereo power amp to play loud orchestral music at concert levels. 40 - 80 watts RMS pc AB1 from a PP valve amp, given the typical 3db headroom of valve amps, should be plenty. A triode option would be good for smaller scale intimate works.

It would be a good idea to find out the range of gain (x to y volts in for output of 1 watt OR in dB ) on the bass amp.

Then check that the prospective valve amp's gains are within that range.

If you have AC for Summer you'll be fine, if not, consider a good sounding AB1 SS 80wpc amp for the hot months.

In the longer term a bespoke or adjustable xover that matches the slopes and Eq of the original passive circuit just might sound a teeny bit better, and give you a bit more loudness, though I doubt that would be significant.

I'd also recommend that you consider picking up a stereo 1/3rd octave equalizer to Eq the bass range to 200hz. That's assuming you haven't gone all-digital, when a room-DSP box becomes an option. eg. Dspeaker or Mini-DSP. I believe Mini-Dsp's range of boxes are flexible re crossover slopes and frequency.

Warmest

Tim Bailey

Skeptical Measurer & Audio Scrounger

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Follow Ups Full Thread

Topic - Revel F52`s and Horizontal Bi-Amping - s-a-k 12:17:18 09/13/16 (26)

RE: Revel F52`s and Horizontal Bi-Amping - pictureguy 18:35:08 12/21/16 (4)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 05:41:20 12/25/16 (3)

RE: Revel F52`s and Horizontal Bi-Amping - pictureguy 08:53:15 12/25/16 (2)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 13:09:19 12/25/16 (1)

RE: Revel F52`s and Horizontal Bi-Amping - pictureguy 13:22:40 12/25/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - Mr Peabody 13:29:17 09/15/16 (4)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 06:54:31 09/16/16 (3)

RE: Revel F52`s and Horizontal Bi-Amping - Mr Peabody 15:57:03 09/16/16 (2)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 09:14:55 09/17/16 (1)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 13:45:53 12/18/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - pictureguy 11:06:24 09/15/16 (0)

I do a passive horizontal bi amp - Awe-d-o-file 08:53:18 09/14/16 (1)

RE: I do a passive horizontal bi amp - s-a-k 09:19:18 09/14/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 08:19:53 09/14/16 (1)

RE: Revel F52`s and Horizontal Bi-Amping - Awe-d-o-file 09:35:46 09/14/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - SgreenP@MSN.com 21:43:29 09/13/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - hahax@verizon.net 20:24:28 09/13/16 (2)

RE: Revel F52`s and Horizontal Bi-Amping - neolith 05:14:31 09/14/16 (1)

RE: Revel F52`s and Horizontal Bi-Amping - hahax@verizon.net 05:37:10 09/14/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - s-a-k 16:42:07 09/13/16 (3)

RE: Revel F52`s and Horizontal Bi-Amping - neolith 17:56:18 09/13/16 (2)

Unless he can find an active crossover that matches the eq, and slopes of the passive OEM item - Timbo in Oz 02:19:13 09/14/16 (1)

I agree. - neolith 04:38:56 09/14/16 (0)

The bass crossover is at 200-220 Hz, so I would give it a go - Timbo in Oz 15:39:12 09/13/16 (0)

RE: Revel F52`s and Horizontal Bi-Amping - neolith 14:57:34 09/13/16 (1)

RE: Revel F52`s and Horizontal Bi-Amping - bigshow 15:34:17 09/13/16 (0)

Follow Ups

The bass crossover is at 200-220 Hz, so I would give it a go - Timbo in Oz 15:39:12 09/13/16 (0)

The bass crossover is at 200-220 Hz, so I would give it a go

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