Alesis Quadrasynth Forum

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How to properly decode Alesis S4+ / Quadrasynth sysex files?

Last post by xfargas « Thu Mar 06, 2025 3:07 pm
Replies: 2
by xfargas » Tue Feb 25, 2025 12:06 pm

Hi, I need to decrypt the sysex information of some files on my Alesis S4 Plus. Specifically, I want to break down the mix/performance dumps to find...

2 Replies

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Last post by xfargas
Thu Mar 06, 2025 3:07 pm
Uploading a saved program to a mix on QS 6.2

Last post by Saul « Mon Dec 30, 2024 9:51 am
Replies: 1
by ericcroll » Fri Dec 27, 2024 8:39 am

QS 6.2

Is there any way to designate an existing saved program as one to be used in the creation of a new mix? It seems to me as though this...

1 Replies

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Last post by Saul
Mon Dec 30, 2024 9:51 am
Informational links for the Quadrasynth

Last post by Jesse « Mon Dec 04, 2023 4:13 pm
Replies: 1
by Jesse » Sun Dec 27, 2020 6:31 pm

Informational links for the Quadrasynth

Alesis Quadrasynth Manual.pdf

quadrasynth_s4 PreMixes.pdf

1 Replies

2372 Views

Last post by Jesse
Mon Dec 04, 2023 4:13 pm
Quadrasynth sysex

Last post by Jesse « Mon Dec 04, 2023 4:10 pm
Replies: 1
by troutstudio » Sat Dec 02, 2023 4:51 am

Can’t see where to disable sysex on my qs keyboard. If I leave the midi in lead connected it does some weird things including tuning. Where do you...

1 Replies

873 Views

Last post by Jesse
Mon Dec 04, 2023 4:10 pm
Service Manual

Last post by Jesse « Thu Jul 06, 2023 8:59 pm
Replies: 1
by Drummond » Sun Jun 25, 2023 2:38 am

A friend is searching for the Alesis S4 (or Quadrasynth) service manual. If someone here has a pdf please send me a copy. Thanks!
dmd1234@gmail.com

1 Replies

1788 Views

Last post by Jesse
Thu Jul 06, 2023 8:59 pm
Hi all - a quick intro and the inevitable questions....

Last post by andy_k « Mon Jun 12, 2023 2:39 pm
Replies: 2
by andy_k » Fri Apr 21, 2023 7:55 pm

OK, so I'm 30 years late to the party having just bought myself a hardly used Quadrasynth from a friend of a friend.

Although I studied piano years...

2 Replies

1483 Views

Last post by andy_k
Mon Jun 12, 2023 2:39 pm
Change in tonality when MIDI is connected

Last post by andy_k « Sun Apr 23, 2023 7:18 pm
Replies: 1
by andy_k » Sun Apr 23, 2023 12:18 am

Is this me doing something wrong? As soon as add a MIDI connection to the Quadrasynth the tone it's supposed to be making sounds a lot harsher and...

1 Replies

1228 Views

Last post by andy_k
Sun Apr 23, 2023 7:18 pm
Quadrasynth Plus Piano headphone hiss expectation?

Last post by exmachina « Mon Jan 02, 2023 10:52 pm
Replies: 6
by exmachina » Mon Mar 21, 2022 2:12 am

Hi all,

Picked up a QSPP dirt cheap with a SKB case and am enjoying it. Noticed that in the headphones output (but NOT the main outs) there's a...

6 Replies

1994 Views

Last post by exmachina
Mon Jan 02, 2023 10:52 pm
Quadrasynth

Last post by kpr « Thu Oct 22, 2020 12:13 pm
Replies: 8
by Sir Raven » Mon Jun 01, 2020 7:32 am

Greetings,

I just want to share that I, since yesterday, am a happy owner of an Alesis Quadrasynth Plus Piano. When I first read an article about...

8 Replies

6587 Views

Last post by kpr
Thu Oct 22, 2020 12:13 pm

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