Senior Member
Location: West Sussex
Posts: 167
I'm Steve.
12v power problem
What am I doing wrong?
Trying to put sound into my motorhome.
Amp is a 12v Bantam
DAC is a Beresford Caiman
Single 12v source feeding a shop bought splitter for the two components, thus
When both plugged in there is speaker feedback/hum
When DAC is disconnected hum stops.
Banned
Location: NE England
Posts: 4,173
I'm Jez.
OK what is this "splitter" for a start? Are you getting sound or just hum? Is it actually mains hum? do you have mains connected to the van?
Senior Member
Location: West Sussex
Posts: 167
I'm Steve.
Doh!
Yes mains is connected to van at the moment. Will try again later on battery power alone.
Splitter is a single power jack in that feeds several power jacks out
Senior Member
Location: West Sussex
Posts: 167
I'm Steve.
Cured
Silly me. Cheers
Mains humm is a horrible thing
Senior Member
Location: West Sussex
Posts: 167
I'm Steve.
Sounding great already....just hooked up a laptop to usb on the Caiman and the sound is lovely.
Two decent sized speakers filling a couple of overhead lockers
Senior Member
Location: Hartlepool UK
Posts: 1,640
I'm Alan.
I would think that the hum could be just the poor rectification filtering and very basic if any regulation from the caravan 12v supply as the can be just poor switchmode supplies?, I have a Bailey Pegasus Bologna and its not bad and no hum.
You could improve the Filtering and regulation of the 12 outlet that feeds your amp so you can still have the mains plugged in as well, even better build yourself a full power supply with its own dedicated transformer, rectifier, smoothing and regulation
Mmmm Now you got me thinking about my Van
Oh hold on the wife has just slapped me accross the back of the head and said dont even go there bloddy HIFI in a caravan Tisht
Alan
Turntable - Garrard 401/Jelco 750L/Ortofon Kontrapunkt B, Pioneer PLC 590, Micro Sieki MA505 , Denon DL103R - DIY Paradise Phono stage - Reel 2 Reel Studer A810, Otari MX55,Tascam BR20, Revox A77, B77, PR99, TEAC X1000 & 3440, Digital HTPC / Young Dac - Preamp - DIY B4, 821, Power Amp's DIY Avondale NCC300 Mono Block, Speakers Wilmslow Kit Volt BM220.8 / Scanspeak D2905/9500
Trade: Beresford Media & Electronics
Location: http://www.homehifi.co.uk
Posts: 6,288
I have heard from a lot of guys who got a DAC of mine connected up to a Bantam amp or similar in a caravan or a boat. It's worth exploringOriginally Posted by 337alant
Oh hold on the wife has just slapped me accross the back of the head and said dont even go there bloddy HIFI in a caravan Tisht.
Website: http://www.homehifi.co.uk
Website: http://www.beresford.me
Website: http://www.homehifi.asia
Senior Member
Location: Glasgowshire
Posts: 9,663
I'm Gary.
MS Paint?What am I doing wrong?
Trying to put sound into my motorhome.
Amp is a 12v Bantam
DAC is a Beresford Caiman
Single 12v source feeding a shop bought splitter for the two components, thus
When both plugged in there is speaker feedback/hum
When DAC is disconnected hum stops.
AC POWER
Hardwired 10kVA balanced mains powering entire system
AMPS
Meridian 557 power Amp (Modded) / PS Audio BHK Preamp (Modded)
SPEAKERS
Wharfedale Evo 4.4
DAC
PS Audio Directstream (Modded)
TURNTABLE
Pro-Ject X8 balanced output via XLR / Ortofon Quintet Blue cartridge
PHONOSTAGE
Pro-Ject DS3 B balanced Input (TT and Phonostage powered by Pro-Ject Power box RS2 linear psu)
DIGITAL
OPPO 203 (Modded: Linear PSU, i2s output to Dac) - Roon Endpoint, HDMI input used for all things Streaming/ PS5 /AppleTV ... also good for movies apparently?
MUSIC PLAYBACK
Tweaked AP-Linux based Roon Server into Oppo 203 as Roon endpoint
Ipad Roon Remote.
Apple Music/ YouTube via AppleTV, fed to Dac via Oppo HDMI input/i2s output to Dac.
SPEAKER CABLES
Biwired: Duelund DCA10GA (Bass) Duelund DCA16GA (mid & treble) Duelund 12DCA used as jumpers (On "Blackcat Cable" Chris Sommivigo's advice - yup, even with biwire it sounds better - and it does)
INTERCONNECTS
All Balanced: Ghost+ recording studio XLR cables
Senior Member
Location: West Sussex
Posts: 167
I'm Steve.
High quality doodle, no?
Took about 30 seconds I'll have you know!
Banned
Location: NE England
Posts: 4,173
I'm Jez.
A cheap inverter just for the hifi could do the trick. I've got couple I got years ago from Netto @ £14.99 each which give 150W @ 240v.
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