Alesis Alpha 112A - great 1000 watt powered PA cab

Started by JeffVolume, October 01, 2014, 06:30:45 PM

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mbenigni

Quote from: Elantric on January 19, 2016, 10:36:51 AM
But wanted to point out  Alesis Alpha 112A are back in stock at Demand Sound
But now $249

I'm not sure they've got the Alpha 112's - I can only find the 115 at the moment.

Tek

Yeah, they only have the 115's now. I think I got the last 2 112's...
BTW, these things are amazing for the cost. I can't believe how clear and defined the sound is.

And they are LOUD!

With my GR-55 and my RC-300, in stereo, they sound great. Nice punchy drums too.
Very happy!  ;D

VGA-7

Are they even making them anymore ? I was looking and all I could find were the ones made by Alto. And I noticed they have a bluetooth model,I think they might be phasing out the older models.
Gibson L6S /gk2a , Bradley mini strat  /gk2a VGA-7 amp ,GR-33 , GP-10,SY1K, RMC breakout box, PK5 midi pedals,CM-64 sound module, Oberheim EDP  ,Boss RC-300,Digitech TRIO and TRIO +, Alesis DM5, GX2 Gear Shifter and GKPX-14

Elantric

#53
the window of opportunity for new Alesis Alpha 112A's at $199 each appears to  be closed

I believe they are now out of production(Confirmed)

http://http://www.gearslutz.com/board/live-sound/934066-alesis-alpha-active-speakers-improved-version-alto-truesonic.html

dickiefunk wrote>
Quote
I've be speaking to one of the guys at InMusic and he said they are different speakers. Here's the difference between the two :-

Alesis has 2.5" voice coil on low transducer instead of 2.0" on Alto
Alesis has 1.75" voice coil on high transducer instead of 1.0" on Alto
Alesis has 500 Watt continuous (350 + 150)/1000 Watt max (700 + 300w), Alto has 400 Watt continuous (335 + 75)/800 Watt max (670w + 130 W) amps
Alesis Frequency response is 51Hz-20kHz (-10db) 52Hz-20kHz (+3dB) and Alto is 54Hz-20kHz (-10dB) and 65Hz-19kHz (+3dB)
Alesis active crossover is set at 1.6kHz and Alto is 2.5kHz

The person I spoke to from InMusic said the Alesis Alpha was originally going to be released under Alto as a "pro" version of the Truesonic range but they found it too expensive to be commercially viable but as they had all the parts they released it under the Alesis Alpha label as to not confuse the Alto Truesonic range.

Apparently they sound like a more refined version of the Alto Truesonic range? I've ordered a pair of the Alesis Alpha 112's and will do a thorough a/b with my Alto TS112a's. Will report back to share my findings!


Confirmed with Inmusic  - These are now out of production.

( . )( . )

Quote from: Chameleon on November 04, 2015, 08:18:32 PM
I got the Alphas...they seem to clip at very low levels from the GP-10. I've adjusted the gp output, but I can't seem to get decent volume from the speakers...certainly not what I was expecting from 1000 watts. I'm running regular instrument cables into the speakers from the L/R mains of the GP, set to line/phones out.


I thought I should update this post - I suppose this is true as I haven't blown them up yet, but the manual is very misleading.

http://community.alesis.com/alesis/topics/alesis-alpha-112-signal-limit-led-clarification

( . )( . )

So, I managed to destroy one of the Alpha's...somehow...It's just giving me high, then low white noise at any volume...Alesis will repair it if I pay to ship it there.

Anyway, I'm looking at the Roland JC-40...how loud is it compared to a JC-120?

Elantric

#56
Quote
Anyway, I'm looking at the Roland JC-40...how loud is it compared to a JC-120?

About 1/3rd volume. It's OK, but if there is another guitar player in the band, or you play with a loud drummer it might not be loud enough. Cube 80XL is easily much louder than JC-40. 

I'm currently sorting out a Firehawk 1500 - plenty loud, but as big as a Fender Super reverb and 74 pounds means it needs better handles than the factory design, and lack of corner protection means the tolex will get ripped in the first month of use.

( . )( . )

If the cube 80XL was stereo, I'd be interested, but alas, it is not.

That Firehawk looks pretty cool...maybe I can find one at my local GC.

I would be fine with the Alpha 112s, but after having one go on me, I'm worried about their reliability. It screwed up plugged into the GP-10 sitting idle (volume up on both the GP and the speaker) when I stepped out of the room for a few minutes.


Elantric

#58
Interesting post related to Alesis Alpha 112 /Alto TS112

---
http://www.thegearpage.net/board/index.php?threads/making-ir-cab-eq-to-achieve-flat-response-of-my-alto-ts112w.1730348/

patriciogac
Member
New
Several months ago I bought a pair of ALTO´s TS112W to enter the FRFR with my Amplifire. Before I was using a Mustang IV (Return Loop) with good results, but I felt that I was missing the whole potential of the modeler. I connected it thru XLR direct to the ALTO. I was very disapointed with the result, Iwas hearing a digital unnatural sound. SO I read a lot and finished convinced mysel that FRFR sounds "different" in a way that I dont like. Many threads were written about you have to used to the sound of the FRFR, and always surprise me how people could enjoy this type of sound.
After many trials and errors I decided to measure how "flat" are my speakers.....(using a cheap mic and throwing a full range signal and later compare the recorded signal from the speakers with the original signal in the computer using iZotope Ozono)
The concept can be better explained here: http://forum.fractalaudio.com/threa...nto-a-flat-response-cab-via-digital-eq.92728/

.... and surprise: they are far from what I can call "flat"... with the frecuencies between 500 and 4500Hz about 10dB under ther refernce sound.

So I decided to make a IR cab of the Eq curve of the ALTO that correct the "unflat" sound of my speakers.
You can look how the curve looks like in the picture



I test the result with My DAW using MixIR from Redwirez.... and It was like a miracle. I can´t belive how good it sounds.
So I make a "mixed" cab using MixIR with this "corrective Eq Cab" first and throwing in series my favorites 3rd party IR Cabs (Thanks 3 Sigma).... so when I use the ALTOs I load this cabs that are mixed with the corrective Eq cab...... NOW I get why people are enjoyed sooo much his FRFR (good qualities like those from Atomic, etc) and why other people complain about the sound on his FRFR (I assume that those aren´t real flat responses speakers).
The sound now is UNBELIVEABLE, super natural and balanced. If I close my eyes I could easily think that I have the modeled amp in my room.
I achieve similar results using Eq band pedals and the Eq in Amplifire, but is super hard and time wasting method compared to this.
Lesson: save a little more money and buy a good (real flat) FRFR system.... You will become a member of the fans of FRFR.
Sorry my bad english


https://www.dropbox.com/s/01ooqotnejm53zu/cab%20correccion%20alto%20ts112%2024hz_dc.wav?dl=0

DF400

Good post, and explains why playing with my Axe 8 through the CLRs was such an eye-opener when I had been used to playing through the Alesis 112As. Makes me wonder if applying the same methodology to PCM sounds would make a significant difference.

LemPyle

Hi...as per my knowledge a considerable bump in mids which required me to re-eq a few of my patches. However, after playing through these for a few months now, I am even more thrilled with all of my modelers and synths. All sound much more open and fuller. I am also thrilled with the price/quality of these units well worth the investment.

admin

#61
FWIW - the Alesis Alpha112A ARE officially discontinued
http://www.alesis.com/products/browse/category/pa-speakers


but they added a User forum
http://community.alesis.com/alesis/topics/alesis-alpha-112-signal-limit-led-clarification


Also the Pedigree of these is they are built in same factory as other InMusic Powered PA cab offerings ( Alto , HeadRush)

Elantric

#62
Quote from: Elantric on January 20, 2016, 03:51:10 PM
the window of opportunity for new Alesis Alpha 112A's at $199 each appears to  be closed

I believe they are now out of production(Confirmed)

http://http://www.gearslutz.com/board/live-sound/934066-alesis-alpha-active-speakers-improved-version-alto-truesonic.html

dickiefunk wrote>
Quote
I've be speaking to one of the guys at InMusic and he said they are different speakers. Here's the difference between the two :-

Alesis has 2.5" voice coil on low transducer instead of 2.0" on Alto
Alesis has 1.75" voice coil on high transducer instead of 1.0" on Alto
Alesis has 500 Watt continuous (350 + 150)/1000 Watt max (700 + 300w), Alto has 400 Watt continuous (335 + 75)/800 Watt max (670w + 130 W) amps
Alesis Frequency response is 51Hz-20kHz (-10db) 52Hz-20kHz (+3dB) and Alto is 54Hz-20kHz (-10dB) and 65Hz-19kHz (+3dB)
Alesis active crossover is set at 1.6kHz and Alto is 2.5kHz

The person I spoke to from InMusic said the Alesis Alpha was originally going to be released under Alto as a "pro" version of the Truesonic range but they found it too expensive to be commercially viable but as they had all the parts they released it under the Alesis Alpha label as to not confuse the Alto Truesonic range.

Apparently they sound like a more refined version of the Alto Truesonic range? I've ordered a pair of the Alesis Alpha 112's and will do a thorough a/b with my Alto TS112a's. Will report back to share my findings!


Confirmed with Inmusic  - These are now out of production.

Researching some trivia



Further investigation reveals this was used on both Alto TS115PA and  Alto TS112PA - observe the "P" in the name

(typical versions sold in USA were Alto TS112A - with a smaller HF driver and lower wattage  - while the TS112PA were "PRO" versions  - which are identical to the Alesis Alpha 112

I own several Alesis Alpha 112 powered Pa cabs   - but at one gig 3 years ago the bass player was running sound and inadvertently "fried" the 1.75" HF diaphragm in one of my Alpha 112 cabs

Been tracking down a replacement HF diaphragm - contacted InMusic Support back in 2015  - was told the replacement HF Driver is part number HG00450 and sells for $99 USD (2015)

( I think i paid $180 for this whole Alesis Alpha 112 cab on sale "new")
Google search on "HG00450",   I finally tracked down this supplier in Brazil with HG00450 in stock with pics - so I can take a look at it  - ( have yet to disassemble my bad Alpha 112 cab)   
Apparently the ODM is P Audio in Thailand (P-audio Skk-d446 16 Fla) - they make speakers for many other major brands ( Mackie, EAW)
http://paudiothailand.com/paudio/

http://www.paudiothailand.com/pac/index.cfm/products/high-frequency-drivers/hfd-exit-diameter/


https://produto.mercadolivre.com.br/MLB-1068264493-hg00450-p-audio-skk-d446-16-fla-driver-alto-ts115pa-caixa-_JM?quantity=1







Mounting type is known as a  "2bolt/3bolt" type
https://www.parts-express.com/cat/horn-drivers/33?N=21711+4294967118+4294964957+4294964531+4294965079&Ne=10166&Nrs=collection%28%29%2Frecord%5Bendeca%3Amatches%28.%2C%22P_PortalID%22%2C%221%22%29+and+endeca%3Amatches%28.%2C%22P_Searchable%22%2C%221%22%29%5D&PortalID=1



similar to this
http://www.hcdesignaudio.com/hcdesingtesting/assets/File/IT%2044%20data%20sheets.pdf
http://www.hcdesignaudio.com/hcdesingtesting/index.cfm/products/compression-drivers/it-44/
http://www.hcdesignaudio.com/hcdesign/assets/File/IT%20Series%20System%20Designs%20and%20Components%20V4.pdf
http://www.hcdesignaudio.com/hcdesign/assets/File/HC-Design-Complete%20Catalog-V2a.pdf


as the "dickiefunk" quote above reveals  -back in 2011  - InMusic Alto division developed a higher wattage version of the TS112A cab - called the TS112PA cab

- and I found a link to a dealer who sold the TS112PA "TS PRO"  here - which matches the same specs as the Alesis Alpha 112

https://www.theaudioworksuk.com/alto-truesonic-pro-ts112pa-500w-professional-active-loudspeaker.html

NEW FOR 2011 ALTO TRUSONIC PRO SERIES


TS112PA PRO

1000 WATT 2-WAY 12" ACTIVE SPEAKER SYSTEM WITH ALESIS DSP TECHNOLOGY
1000 Watts Class D power
Alesis DSP Technology
12" neodymium LF driver
1.75" titanium HF driver
2 Mic/Line combo inputs with independent volume controls
XLR output to link speakers
Lightweight, trapezoidal cabinet with handles
Used as a traditional upright loudspeaker or as floor wedge monitor
100 x 60 Long throw coverage field
Stand/pole mountable or flyable
Clip Limiter with red LED
Ground Lift switch
Contour switch for increased EQ control
Accurate audience coverage, not just on-axis
Designed and tuned in the USA




TECH INFORMATION

Transducer Low: 12" Neodymium woofer, with 2.5" voice coil
Transducer High: Titanium diaphragm compression driver, 1" exit with 1.75" voice coil
Power Amplification: 1000 Watts peak (700 W LF + 300 W HF), 500 Watts continuous (350 W LF + 150 W HF)
Frequency Range (-10 dB): 51 Hz - 20 kHz
Frequency Response (±3 dB): 52 Hz - 20 kHz
Maximum SPL @ 1m: 126 dB peak, 123 dB continuous
-6 dB Nominal Coverage: (80° / 100° H x 60° V)
Active Crossover: 1.6 kHz, DSP based
Connectors:  2 x Mic / Line Female XLR - 1/4" combo inputs, 1 x Loop - Out Male XLR
Input  Control: Line / Mic -∞ to +50 dB, Input Impedance 15 kOhms, Maximum input level +23 dBu, Input Impedance 15 kOhms
External Controls: Volume, Power switch with LED indicator, Clip/Limit LED, Ground Lift switch
Protection Features: Over-excursion, Thermal, Driver, DSP based
AC Power: 100 VAC, or 110 – 120 VAC, or 220 - 240 VAC (50 / 60 Hz)
Enclosure: Trapezoidal, with floor monitor capability. Injection molded, polypropylene enclosure, with perforated steel grille
Mounting: Integrated pole-socket (36 mm dia.) Two handles, 6 M10 threaded sockets: 2 top, 2 bottom, 1 pullback
Dimensions (WxLxH): 648mm x 383.8mm x 365mm
Weight: 31 lb


compare the TS112PA to the Alesis Alpha 112 (they are identical)
https://7132afa424c2f1a2ab6d-54d68a14e2e7c1f76563a2d8c3e9fd82.ssl.cf2.rackcdn.com/959/documents/ALPHA112-QuickstartGuide-v1.2.pdf



Alternate HF Driver
https://www.carid.com/images/ds18/items/pdf/ds18-product-catalog.pdf
PRO-DRN1



https://www.amazon.com/DS18-PRO-DRN1-Neodymium-Compression-Capacitor/dp/B07BV5781Z

https://www.ebay.com/itm/DS18-PRO-DRN1-1-75-VC-Neodymium-Compression-Driver-300W-Max-8ohm-Set-of-1/263638305382?hash=item3d62114a66:g:7VMAAOSwPV9a4hfC:rk:1:pf:1&frcectupt=true


DS18® - 1-3/4" Titanium 300W Compression Driver more details on - https://www.carid.com/ds18/1-3-4-titanium-300w-compression-driver-mpn-pro-drn1.html?singleid=1326918834
https://www.carid.com/ds18/1-3-4-titanium-300w-compression-driver-mpn-pro-drn1.html?singleid=1326918834

https://www.parts-express.com/cat/horn-drivers/33?N=21711+4294967118+4294964957+4294964531+4294965079&Ne=10166&Nrs=collection%28%29%2Frecord%5Bendeca%3Amatches%28.%2C%22P_PortalID%22%2C%221%22%29+and+endeca%3Amatches%28.%2C%22P_Searchable%22%2C%221%22%29%5D&PortalID=1

Elantric

InMusic got right back to me this morning

Price of the HG00450 HF Driver for Alesis Alpha 112  is now $98 - I ordered  - ships from Reno NV , will have it in 3 days

Elantric

#64



new HF Driver arrived  - plan on swapping out old dead driver and install the new driver

Then I'll disassemble the dead HF driver and determine if there is an alternate HF Diaphragm at www.SimplySpeakers.com 

https://www.simplyspeakers.com/replacement-speaker-diaphragms.html