Alembic Guitars Club

Connecting => Miscellaneous => Topic started by: rv_bass on May 18, 2019, 03:40:49 PM

Title: One rack space power amp
Post by: rv_bass on May 18, 2019, 03:40:49 PM
I like using my SF-2 with my F-1X and I would like to keep to a 3 rack space case. 

Does anyone know of a 1 rack space class D power amp, two channels at least 800w per channel into 4 ohms? 

I saw a post by Jazzyvee on another site mentioning an amp by a company called Synq, but I haven't been able to find those in the US.  Peavey used to make one, but it is discontinued.  Otherwise, I have not been able to find mention of any others.

Thanks!
Title: Re: One rack space power amp
Post by: David Houck on May 18, 2019, 07:35:50 PM
If you find one, let me know.  :)
Title: Re: One rack space power amp
Post by: JimmyJ on May 19, 2019, 09:06:41 AM
Here are a few:
http://www.demeteramps.com/index.php?route=product/product&product_id=94 (http://www.demeteramps.com/index.php?route=product/product&product_id=94)
http://usa.matrixamplification.com/rack-amplifers/gt-800-fx.html (http://usa.matrixamplification.com/rack-amplifers/gt-800-fx.html)
https://assets.peavey.com/literature/manuals/80301828.pdf (https://assets.peavey.com/literature/manuals/80301828.pdf)  (discontinued - you'd need to find a used one)
http://www.powersoft-audio.com/en/touring/k-series#series (http://www.powersoft-audio.com/en/touring/k-series#series)  (K series - $$$)
Watch out for the depth of these units, they may not fit in your rack.  If you went external there are some pretty nice lightweight class-d boxes out there.

Jimmy J
Title: Re: One rack space power amp
Post by: rv_bass on May 19, 2019, 09:33:09 AM
Thank you, Jimmy, I think the Matrix might do the trick!
Rob
Title: Re: One rack space power amp
Post by: cozmik_cowboy on May 19, 2019, 12:06:23 PM
Here are a few:
[snip]
http://www.powersoft-audio.com/en/touring/k-series#series (http://www.powersoft-audio.com/en/touring/k-series#series)  (K series - $$$)
[snip]
Jimmy J

Powersoft K20: bridged into 4Ω = 18,000w.  In one rack space.
That's amazing - but speaking as a soundman, allow me to propose a Constitutional amendment banning these from anybody's stage rig.......

Peter
Title: Re: One rack space power amp
Post by: edwardofhuncote on May 19, 2019, 05:07:49 PM

That Demeter looks nice, but yowch! ($) I guess you get what you pay for though... his preamps I've used have been quite nice indeed.

I know that the day is coming, -and I am bittersweetly welcoming it- that I will want/need to bring an SF-2 into my life. These bloomin' Starfire basses are going to make that happen sooner than later. Then who knows what crazy plans get hatched.  ::)
Title: Re: One rack space power amp
Post by: edwin on May 20, 2019, 01:14:49 AM
Here are a few:
[snip]
http://www.powersoft-audio.com/en/touring/k-series#series (http://www.powersoft-audio.com/en/touring/k-series#series)  (K series - $$$)
[snip]
Jimmy J

Powersoft K20: bridged into 4Ω = 18,000w.  In one rack space.
That's amazing - but speaking as a soundman, allow me to propose a Constitutional amendment banning these from anybody's stage rig.......

Peter

Note that that is peak power, not RMS or some other measurement of steady output. My guess is that the RMS output is much, much lower. I don't really trust amplifiers where the RMS or equivalent specs are not published. Peak power doesn't mean all that much, especially when THD and frequency range of peak power isn't published. I bet a lot of amps can do 18,000 watts at 1khz at 5% THD for a fraction of a millisecond.
Title: Re: One rack space power amp
Post by: cozmik_cowboy on May 20, 2019, 08:22:11 AM
Here are a few:
[snip]
http://www.powersoft-audio.com/en/touring/k-series#series (http://www.powersoft-audio.com/en/touring/k-series#series)  (K series - $$$)
[snip]
Jimmy J

Powersoft K20: bridged into 4Ω = 18,000w.  In one rack space.
That's amazing - but speaking as a soundman, allow me to propose a Constitutional amendment banning these from anybody's stage rig.......

Peter

Note that that is peak power, not RMS or some other measurement of steady output. My guess is that the RMS output is much, much lower. I don't really trust amplifiers where the RMS or equivalent specs are not published. Peak power doesn't mean all that much, especially when THD and frequency range of peak power isn't published. I bet a lot of amps can do 18,000 watts at 1khz at 5% THD for a fraction of a millisecond.

OK, yeah - good point.  But I say it doesn't count if they explode during the next fraction of a millisecond.

Peter
Title: Re: One rack space power amp
Post by: David Houck on May 20, 2019, 09:16:43 AM
The Matrix does look nice, and I've looked at that model on their website in the past.  And while I understand targeting guitar players with modeling rigs, I do wonder why they don't even mention using it with a bass.

Also wondering how loud the fans get with that much power in a one rack space.
Title: Re: One rack space power amp
Post by: rv_bass on May 20, 2019, 05:35:58 PM
What would be nice is one of these

http://club.alembic.com/index.php?topic=425.0

a SF-2 in the same size box, and small but powerful power amp to go with them.  They could all fit in one backpack.  :)
Title: Re: One rack space power amp
Post by: lbpesq on May 20, 2019, 06:08:57 PM
There’s a similar preamp on reverb currently.

https://reverb.com/item/11128480-dual-tube-preamp-for-bass-and-guitar-alembic-f2b-inspired-fender-60-s-tonestack (https://reverb.com/item/11128480-dual-tube-preamp-for-bass-and-guitar-alembic-f2b-inspired-fender-60-s-tonestack)

Bill, tgo