DIY Audio Projects Forum
 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 26 May 2018, 03:08

All times are UTC - 6 hours [ DST ]




Post new topic Reply to topic  [ 2 posts ] 
Author Message
PostPosted: 15 Aug 2016, 23:05 
Offline

Joined: 15 Aug 2016, 23:03
Posts: 2
Location: USA
I would like to get some advice on a 4 channel amp and PSU for an active speaker I'm building. The problem is that I'm an amp beginner, so I don't have the knowledge or capabilities of doing more advanced amp work.

I'm powering some very high fidelity drivers with this amp, so good sound quality would be very nice. There are two 4 ohm woofers that wants around 70W, and I would like the amp to be able to hit that.

Initially, I am thinking of using a Sure 4 channel TK2050 board with the 300W 28V PSU from Hifimediy.

Sure Electronics AA-AB33182 4x100W at 4 Ohm Class D Digital Audio Amplifier Board STA508 (TK2050)
SMPS300R 28V 110V power supply

While this would be a very simple and doable setup, it is limiting in many ways. From what I've read, the sound quality isn't up to par with something like a TPA3116. Also, the amp can only produce 64W @ 4 ohm @ 1% THD with a 30V PSU. With a 28V PSU it is probably only going to be in the 50's.

So the ideal setup would be a TPA3116 driving the Scanspeak mid and tweeter and something high powered like the TDA7498E to power the 2 woofers. However, these two amps operate on 2 different voltages, and I don't have enough space for 2 PSU's in the speaker. Even if I did, I don't wanna deal with 2 power connectors into the speaker.

Is there any other routes I could possibly take?

Appreciate any help.


Top
 Profile  
 
PostPosted: 09 Sep 2016, 06:52 
Offline

Joined: 27 Aug 2016, 07:35
Posts: 11
Use a simple zener diode / transistor power supply to drop voltage.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC - 6 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Op-amp Projects :: DIY Phono Projects :: DIY Cable Projects :: Hi-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy