Log in
Register
Home
Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Peter Morris" data-source="post: 140840" data-attributes="member: 652"><p>Re: 60 Degree DIY Mid Hi</p><p></p><p></p><p></p><p><span style="font-family: 'Calibri'"><span style="color: #000000"><span style="font-size: 12px">Hi Jack,</span></span></span></p><p> <span style="font-family: 'Calibri'"><span style="color: #000000"><span style="font-size: 12px"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="color: #000000"><span style="font-size: 12px">In terms of power output per band I think the design is working exactly as intended. I have had very few opportunities to push the box to see what it would do and where the limits are. General I have only had one double 18 under it and that’s not enough.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="color: #000000"><span style="font-size: 12px"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="color: #000000"><span style="font-size: 12px">I have tried the 90 degree version with a 500Hz crossover. When you push it hard it seems happier at 600 – 700Hz. This is probably more to do with the cut off frequency of the horn rather than the compression driver. I think the 60 degree version will operate happily to 500Hz – 600Hz because the horn is bigger and has alower cut off frequency.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">I posted a video of the amps in operation on the DIY with adouble 18 sub. </span></span></span><a href="https://youtu.be/3n2Bxbc-Ytw" target="_blank"><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #0000ff">https://youtu.be/3n2Bxbc-Ytw</span></span></span></a> Note: the subs and DIY LF are 4 ohms and the HF & VHF are 16 ohms so the compression driver is getting comparatively 6 dB less power than the Sub and LF with the same amplifier meter reading.</p><p></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">Amp rack configuration:- </span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">VHF – Top amp</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">HF </span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">LO </span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">SUB - Bottom Amp</span></span></span></p><p></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">The metering on the Powersoft K6 is a bit strange </span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Red clip</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Amber – 1 dB</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Green -3dB</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Green –6dB</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Green -10dB</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-family: 'Calibri'"><span style="font-size: 12px">Green – not sure, manual does not say … about-15dB</span></span></span></p><p><span style="color: #000000"><span style="font-family: 'Symbol'"><span style="font-size: 12px">·</span> </span><span style="font-size: 12px"><span style="font-family: 'Calibri'">Green -60 dB - signal present light.</span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 140840, member: 652"] Re: 60 Degree DIY Mid Hi [FONT=Calibri][COLOR=#000000][SIZE=3]Hi Jack, [/SIZE][/COLOR][/FONT] [FONT=Calibri][COLOR=#000000][SIZE=3]In terms of power output per band I think the design is working exactly as intended. I have had very few opportunities to push the box to see what it would do and where the limits are. General I have only had one double 18 under it and that’s not enough.[/SIZE][/COLOR][/FONT] [FONT=Calibri][COLOR=#000000][SIZE=3] I have tried the 90 degree version with a 500Hz crossover. When you push it hard it seems happier at 600 – 700Hz. This is probably more to do with the cut off frequency of the horn rather than the compression driver. I think the 60 degree version will operate happily to 500Hz – 600Hz because the horn is bigger and has alower cut off frequency.[/SIZE][/COLOR][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000] I posted a video of the amps in operation on the DIY with adouble 18 sub. [/COLOR][/SIZE][/FONT][URL="https://youtu.be/3n2Bxbc-Ytw"][FONT=Calibri][SIZE=3][COLOR=#0000ff]https://youtu.be/3n2Bxbc-Ytw[/COLOR][/SIZE][/FONT][/URL] Note: the subs and DIY LF are 4 ohms and the HF & VHF are 16 ohms so the compression driver is getting comparatively 6 dB less power than the Sub and LF with the same amplifier meter reading. [FONT=Calibri][SIZE=3][COLOR=#000000]Amp rack configuration:- [/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000] VHF – Top amp[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]HF [/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]LO [/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]SUB - Bottom Amp[/COLOR][/SIZE][/FONT] [FONT=Calibri][SIZE=3][COLOR=#000000]The metering on the Powersoft K6 is a bit strange [/COLOR][/SIZE][/FONT] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Red clip[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Amber – 1 dB[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Green -3dB[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Green –6dB[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Green -10dB[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][FONT=Calibri][SIZE=3]Green – not sure, manual does not say … about-15dB[/SIZE][/FONT][/COLOR] [COLOR=#000000][FONT=Symbol][SIZE=3]·[/SIZE] [/FONT][SIZE=3][FONT=Calibri]Green -60 dB - signal present light.[/FONT][/SIZE][/COLOR] [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
Top
Bottom
Sign-up
or
log in
to join the discussion today!